diff options
58 files changed, 886 insertions, 1459 deletions
@@ -47,6 +47,10 @@ sw/**/*.bin sw/**/*.o sw/**/*.a +# sdcc compiler output +sw/z80/build +sw/z80_test/build + # custom various/* diff --git a/doc/report/build/notes.pdf b/doc/report/build/notes.pdf Binary files differindex 5a43c7d..56e2cd1 100644 --- a/doc/report/build/notes.pdf +++ b/doc/report/build/notes.pdf diff --git a/doc/report/build/z80uPC.pdf b/doc/report/build/z80uPC.pdf Binary files differindex aff4174..df353cb 100644 --- a/doc/report/build/z80uPC.pdf +++ b/doc/report/build/z80uPC.pdf diff --git a/doc/report/build/z80uPC_nostyle.pdf b/doc/report/build/z80uPC_nostyle.pdf Binary files differnew file mode 100644 index 0000000..87cdd60 --- /dev/null +++ b/doc/report/build/z80uPC_nostyle.pdf diff --git a/doc/report/makefile b/doc/report/makefile index e10c0b9..d88b1bb 100644 --- a/doc/report/makefile +++ b/doc/report/makefile @@ -2,7 +2,7 @@ BUILD_DIR := build RES_DIR := res -SOURCES := z80uPC.tex notes.tex +SOURCES := z80uPC.tex z80uPC_nostyle.tex notes.tex DOCUMENTS := $(patsubst %.tex,$(BUILD_DIR)/%.pdf,$(SOURCES)) RES_SRC := $(wildcard $(RES_DIR)/*.svg) diff --git a/doc/report/res/addrspace.pdf b/doc/report/res/addrspace.pdf Binary files differindex 96ac657..abf9fed 100644 --- a/doc/report/res/addrspace.pdf +++ b/doc/report/res/addrspace.pdf diff --git a/doc/report/res/block_diagram.pdf b/doc/report/res/block_diagram.pdf Binary files differindex 204a22e..57b42d6 100644 --- a/doc/report/res/block_diagram.pdf +++ b/doc/report/res/block_diagram.pdf diff --git a/doc/report/res/iospace.pdf b/doc/report/res/iospace.pdf Binary files differindex c1773fd..ba36d9d 100644 --- a/doc/report/res/iospace.pdf +++ b/doc/report/res/iospace.pdf diff --git a/doc/report/res/kernel_mem_base.pdf b/doc/report/res/kernel_mem_base.pdf Binary files differindex 875d16e..7d2a257 100644 --- a/doc/report/res/kernel_mem_base.pdf +++ b/doc/report/res/kernel_mem_base.pdf diff --git a/doc/report/res/mem_kern_alloc.pdf b/doc/report/res/mem_kern_alloc.pdf Binary files differnew file mode 100644 index 0000000..fd02dfd --- /dev/null +++ b/doc/report/res/mem_kern_alloc.pdf diff --git a/doc/report/z80uPC.tex b/doc/report/z80uPC.tex index eaad987..50034ec 100644 --- a/doc/report/z80uPC.tex +++ b/doc/report/z80uPC.tex @@ -50,25 +50,33 @@ \maketitle \begin{abstract} + Lo Zilog Z80 \`e un processore a 8 bit che fu introdotto nel 1976 che ebbe un grandissimo successo nel mondo dell'elettronica e dell'informatica - nella fine del 20esimo secolo. In memoria di questo processore pioniere - dell'industria di sistemi embedded ho deciso di costruire un computer a - scopo generico intorno a questa piattaforma. L'obiettivo \`e di realizzare - una scheda programmabile con tutti i componenti necessari come ROM, RAM e - timers per far funzionare del software programmato se possibile sul - dispositivo stesso. + nella fine del 20esimo secolo. In memoria di questo pioniere + dell'industria dei sistemi informatici questo progetto documenta la + realizzazione di un microcomputer a scopo generico a base di esso. + L'obiettivo primario dunque \`e di realizzare una scheda simile ad una + motherboard dei computers venduti all'epoca completa di RAM, ROMs, + interfacce seriali e altri circuiti di supporto. Successivamente per + l'aspetto software il progetto deve implementare i drivers per ogni + circuito presente sulla scheda in modo da semplificare la programmazione. + L'obiettivo opzionale del progetto, una volta terminata la costruzione + hardware, \`e di realizzare una kernel monolitica che offre funzioni + minimali simili ad un sistema UNIX, quali processi, filesystem, memory + management e drivers. + \end{abstract} \section{Specifiche tecniche dello Z80} Lo Z80 \`e un processore molto minimalistico se paragonato a ci\`o che si -trova oggi sul mercato dei microcontrollori. Per il mio progetto ho deciso di -utilizzare il modello originale \texttt{Zilog Z8400} che non dispone di -sistemi integrati come i modelli SoC odierni. Le specifiche pi\`u importanti -sono elencate a seguire. +trova oggi sul mercato dei microcontrollori. Per il progetto \prj la CPU in +uso \`e il modello originale \texttt{Zilog Z8400} che non dispone di sistemi +integrati come i modelli SoC odierni. Le specifiche pi\`u importanti sono +elencate a seguire. \begin{itemize} - \item Architettura a 8 bit con bus a 16 bit con 64K indirizzi indirizzabili + \item Architettura a 8 bit con bus a 16 bit, 64K indirizzi indirizzabili \item Registri a 16 bit per {\tt SP,PC} e registri di utilizzo generico a 8 bit {\tt A..F} combinabili a coppie {\tt AF,BC,..} per utilizzare valori a 16 bit diff --git a/doc/report/z80uPC_nostyle.tex b/doc/report/z80uPC_nostyle.tex new file mode 100644 index 0000000..a3421ef --- /dev/null +++ b/doc/report/z80uPC_nostyle.tex @@ -0,0 +1,163 @@ +\documentclass[a4paper, 11pt]{article} + +\usepackage{array} +\usepackage{float} +\usepackage{wrapfig} +\usepackage{textgreek} +\usepackage{graphicx} + +% source code +\usepackage{listings} + +% set correct hypenation +\usepackage[italian]{babel} + +% to fix macros +\usepackage{xspace} +% commands +% macro for project name +\newcommand{\prj}{Z80\textmu PC\xspace} + +% invert signal (not, active low) +\newcommand{\inv}[1]{$\overline{\mbox{#1}}$} + +% metadata +\title{\prj Single Board \\ Computer Development } +\author{Naoki Pross} + +% document +\begin{document} + +\maketitle +\begin{abstract} + + Lo Zilog Z80 \`e un processore a 8 bit che fu introdotto nel 1976 che ebbe + un grandissimo successo nel mondo dell'elettronica e dell'informatica + nella fine del 20esimo secolo. In memoria di questo pioniere + dell'industria dei sistemi informatici questo progetto documenta la + realizzazione di un microcomputer a scopo generico a base di esso. + L'obiettivo primario dunque \`e di realizzare una scheda simile ad una + motherboard dei computers venduti all'epoca completa di RAM, ROMs, + interfacce seriali e altri circuiti di supporto. Successivamente per + l'aspetto software il progetto deve implementare i drivers per ogni + circuito presente sulla scheda in modo da semplificare la programmazione. + L'obiettivo opzionale del progetto, una volta terminata la costruzione + hardware, \`e di realizzare una kernel monolitica che offre funzioni + minimali simili ad un sistema UNIX, quali processi, filesystem, memory + management e drivers. + +\end{abstract} + +\section{Hardware} + +\subsection{Specifiche tecniche dello Z80} + +Lo Z80 \`e un processore molto minimalistico se paragonato a ci\`o che si +trova oggi sul mercato dei microcontrollori. Per il progetto \prj la CPU in +uso \`e il modello originale \texttt{Zilog Z8400} che non dispone di moduli +aggiuntivi integrati come i modelli SoC odierni. La scelta di una CPU tanto +semplice \`e la conseguenza del design didattico del progetto, inoltre senza +alcun dispositivo interno lo \texttt{Z8400} si presenta con un address space +completamente vuoto, ad eccezzione del punto d'inizio e i vettori di reset. + +Lo Z80 utilizza I/O paralleli sia per la lina a 16 degli indizzi che per la +linea dati a 8 bit e dispone di 6 registri 8 bit ad utilizzo generico +combinabili in coppie per ottenere un valore a 16 bit. Per il controllo dei +dispositivi esterni, come lettura e scrittura esso possiede delle linee di +controllo dedicate come {\tt\inv{RD}}, {\tt\inv{WR}}, {\tt\inv{MREQ}}, ecc. In +quanto instruction set, lo Z80 ha 158 istruzioni possibili di cui 78 sono un +sottoinsieme dello 8080A, architettate per poter mantere una +retrocompatiblit\`a. + +\begin{table}[ht]\centering +\caption{Riassunto delle specifiche} + +\begin{tabular}{ l l } + \\ \hline + Dimensione Indirizzi & 16 bit \\ + Dimensione Dati (word) & 8 bit \\ + Spazio Indirizzabile & 64 KB \\ + Registri Generici 8 bit & 6 ({\tt A..F}) \\ + Registri 16 bit & 2 ({\tt SP, PC}) \\ + Clock speed & 8 MHz, 6MHz, 4MHz, 2.5MHz \\ + \hline +\end{tabular} +\end{table} + +\subsection{Componenti e modello di design} + +Il minimo necessario per far funzionare uno Z80 sono una {\tt RAM} ed una {\tt +ROM}, ma avendo a disposizione altri dispositivi I/O lo \prj dispone anche di +una porta seriale, di una porta parallela e di un counter timer; Hardware che +si presenta normalmente all'interno di microcontrollori odierni. + +\begin{table}[hb]\centering +\caption{Lista dei componenti} +\begin{tabular}{ >{\tt}l >{\tt\bfseries}l >{\footnotesize}p{.7\linewidth} } + \\ \hline + ROM & M28C64 & EEPROM da 8KB x 8 bit (64K) per il BIOS / Bootloader / + OS installata doppia per avere 16KB \\ + RAM & HM62256B & SRAM da 32KB x 8bit (256K) \\ + CTC & Z8430 & Counter timer circuit ufficiale di Zilog a 4 canali + programmabili \\ + PIO & Z8420 & Parallel input/output controller di Zilog per avere un + intefaccia digitale con due porte da 8 bit \\ + MMU & M4-32/32-15JC & CPLD programmabile che implementa una memory + management unit semplificata in grado di gestire i 5 + bit pi\`u significativi della linea di indirizzi \\ + USART & TL16C550C & Interfaccia USART per poter comunicare utilizzando il + protocollo RS232 \\ + \hline +\end{tabular} +\end{table} + +Il design dello \prj \`e costruito sulla falsa riga di un Arduino o di un +EasyPIC con l'aggiunta di funzionalit\`a a scopo didattico quali; la +possiblit\`a di cambiare la velocit\`a di clock tra 4MHz, 200Hz o manuale +(mediante un bottone sulla scheda) e una serie di display a 7 segmenti per +vedere in tempo reale i valori sui bus degli indirizzi e dei dati. +\begin{center} +\begin{tabular}{ >{\bfseries}r p{.8\linewidth} } + 0Hz & Il clock manuale \`e un bottone che permette di creare + le pulsazioni, per poter analizzare ogni istruzione \\ + 200Hz & Mediante un classico circuito con un LM555 si ha un clock + per eseguire i programmi a velocit\`a rallentata \\ + 4MHz & Clock per esecuzione a velocit\`a piena (normale) +\end{tabular} +\end{center} + +\subsection{Memory management unit} + +Alcuni modelli sucessori dello Z8400 implementavano ina MMU (Memory Management +Unit) SoC che permetteva di ampliare la dimensione dell'address space, +permettendo quindi di mappare pi\`u memorie o dispositivi separati negli +stessi indirizzi. Ci\`o \`e un sistema \`e comune nei sistemi a base di +microcontrollers per ovviare al problema dello spazio. Lo \prj per\`o ha un +architettura pi\`u simile ad un computer X86 in cui la MMU viene utilizzata +per la gestione delle \emph{pagine} di memoria. + +Il concetto di pagine (pages in inglese) \`e necessario per sistemi con un +supporto per il multitasking o per poter ampliare la memoria dinamica. + +\section*{Glossario Tecnico} + +\begin{tabular}{ >{\bfseries}p{.3\linewidth} p{.7\linewidth} } + + Address Space & In informatica l'\emph{address space} \`e un intervallo di + indirizzi che possono corrispondere a indirizzi in rete, regioni di un + dispositivo, di una memoria o di un qualsiasi altro dispositivo fisico o + logico. Per questo progetto \emph{address space} si riferisce + all'intervallo indirizzabile dal processore, ovvero $2^{16}$ locazioni + siccome il sistema dispone di un bus a 16 bit. \\ + + Registro & Un registro \`e un dispositivo di memoria in cui \`e possibile + pu\`o leggere e/o scrivere un certo valore. Normalmente in un computer / + microcontrollore la dimensione della memoria \`e data dall'architettura, + dunque 8, 16, 32 o 64 bits. In questo documento viene viene comunemente + utilizzato per riferirsi ad una memoria di un dispositivo fisico come la + CPU o un IC seriale. \\ + + +\end{tabular} + +\end{document} diff --git a/sw/programmer/avr/main.c b/sw/programmer/avr/main.c index 9cdc35d..4f39100 100644 --- a/sw/programmer/avr/main.c +++ b/sw/programmer/avr/main.c @@ -98,16 +98,21 @@ void eeprom_write(uint16_t addr, uint8_t byte) /* set data */ EEPROMDR = byte; + + // because EEPROMDR0 and EEPROMDR1 are used by Tx and Rx + EEPROMCR = (PINC & 0x07) | (byte & 0x03)<<3; EEPROMCR &= ~(_BV(ADDR_EH) | _BV(ADDR_EL)); /* write eeprom */ EEPROMCR &= ~_BV(EEPROM_WR); - eeprom_tick(); + + // eeprom_tick(); EEPROMCR |= _BV(EEPROM_WR); EEPROMCR |= _BV(ADDR_EH) | _BV(ADDR_EL); } +#if 0 /* pulse the clock line for the eeprom */ void eeprom_tick() { @@ -116,4 +121,4 @@ void eeprom_tick() EEPROMCR &= ~_BV(EEPROM_CLK); _delay_ms(EEPROM_TICK_MS); } - +#endif
\ No newline at end of file diff --git a/sw/programmer/linux/config.h b/sw/programmer/linux/config.h deleted file mode 100644 index d319f43..0000000 --- a/sw/programmer/linux/config.h +++ /dev/null @@ -1,26 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Name of package */ -#define PACKAGE "z80prog" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "naopross@tharcway.org" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "z80prog" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "z80prog 0.1" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "z80prog" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "0.1" - -/* Version number of package */ -#define VERSION "0.1" diff --git a/sw/programmer/linux/src/flash.c b/sw/programmer/linux/src/flash.c index 48189da..6fcd09f 100644 --- a/sw/programmer/linux/src/flash.c +++ b/sw/programmer/linux/src/flash.c @@ -28,19 +28,24 @@ int flash_write(const char *romfile, void (*log)(const char *)) goto exit_romfd; while ((head.size = read(romfd, buffer, FLASH_BLOCK_SIZE))) { + if (head.size < 0) { + log("[!] Error while reading from file\n"); + break; + } + head.addr = (uint16_t) lseek(romfd, 0, SEEK_CUR); written = write(flash_serial_fd, &head, sizeof(struct flash_blk)); - if (written < 0) { - // error + if (written != sizeof(struct flash_blk)) { + log("[!] Some bytes of flash_blk haven't been written\n"); } written = write(flash_serial_fd, buffer, head.size); - if (written < 0) { - // error + if (written != head.size) { + log("[#] Some bytes might not have been written\n"); } - char logbuf[64]; + char logbuf[64]; sprintf(logbuf, "[@] Written %d bytes at address %d\n", head.size, head.addr); log(logbuf); } diff --git a/sw/programmer/linux/src/ui.c b/sw/programmer/linux/src/ui.c index 87dc0c7..b53ff0b 100644 --- a/sw/programmer/linux/src/ui.c +++ b/sw/programmer/linux/src/ui.c @@ -18,6 +18,7 @@ void ui_init(int *argc, char **argv[]) /* connect objects to callbacks */ window = GTK_WINDOW(gtk_builder_get_object(ui_builder, "window")); + g_signal_connect(window, "delete_event", G_CALLBACK(flash_close), NULL); g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL); connectbtn = GTK_BUTTON(gtk_builder_get_object(ui_builder, "connectbtn")); diff --git a/sw/programmer/linux/src/z80prog b/sw/programmer/linux/src/z80prog Binary files differdeleted file mode 100755 index 2f0d230..0000000 --- a/sw/programmer/linux/src/z80prog +++ /dev/null diff --git a/sw/z80/build/kernel/filesystem.asm b/sw/z80/build/kernel/filesystem.asm deleted file mode 100644 index f868b5a..0000000 --- a/sw/z80/build/kernel/filesystem.asm +++ /dev/null @@ -1,117 +0,0 @@ -;-------------------------------------------------------- -; File Created by SDCC : free open source ANSI-C Compiler -; Version 3.5.0 #9253 (Mar 24 2016) (Linux) -; This file was generated Wed Aug 23 21:44:59 2017 -;-------------------------------------------------------- - .module filesystem - .optsdcc -mz80 - -;-------------------------------------------------------- -; Public variables in this module -;-------------------------------------------------------- - .globl _fs_parse_superblock - .globl _fs_parse_path - .globl _fs_get_inode - .globl _fs_new_inode - .globl _fs_free_inode - .globl _fs_chmod - .globl _fs_chown - .globl _fs_rename -;-------------------------------------------------------- -; special function registers -;-------------------------------------------------------- -;-------------------------------------------------------- -; ram data -;-------------------------------------------------------- - .area _DATA -;-------------------------------------------------------- -; ram data -;-------------------------------------------------------- - .area _INITIALIZED -;-------------------------------------------------------- -; absolute external ram data -;-------------------------------------------------------- - .area _DABS (ABS) -;-------------------------------------------------------- -; global & static initialisations -;-------------------------------------------------------- - .area _HOME - .area _GSINIT - .area _GSFINAL - .area _GSINIT -;-------------------------------------------------------- -; Home -;-------------------------------------------------------- - .area _HOME - .area _HOME -;-------------------------------------------------------- -; code -;-------------------------------------------------------- - .area _CODE -;kernel/filesystem.c:3: struct filesystem * fs_parse_superblock(struct filesystem *fs) -; --------------------------------- -; Function fs_parse_superblock -; --------------------------------- -_fs_parse_superblock:: -;kernel/filesystem.c:5: return 0; - ld hl,#0x0000 - ret -;kernel/filesystem.c:9: uint16_t fs_parse_path(const char *path) -; --------------------------------- -; Function fs_parse_path -; --------------------------------- -_fs_parse_path:: -;kernel/filesystem.c:11: return 0; - ld hl,#0x0000 - ld e,l - ld d,h - ret -;kernel/filesystem.c:15: inode_t * fs_get_inode(inode_t *buffer, uint16_t i_number) -; --------------------------------- -; Function fs_get_inode -; --------------------------------- -_fs_get_inode:: -;kernel/filesystem.c:17: return 0; - ld hl,#0x0000 - ret -;kernel/filesystem.c:20: inode_t * fs_new_inode(inode_t *inode, const char *name) -; --------------------------------- -; Function fs_new_inode -; --------------------------------- -_fs_new_inode:: -;kernel/filesystem.c:22: return 0; - ld hl,#0x0000 - ret -;kernel/filesystem.c:25: int fs_free_inode(const inode_t *inode) -; --------------------------------- -; Function fs_free_inode -; --------------------------------- -_fs_free_inode:: -;kernel/filesystem.c:27: return 0; - ld hl,#0x0000 - ret -;kernel/filesystem.c:30: void fs_chmod(inode_t *inode, uint8_t mode) -; --------------------------------- -; Function fs_chmod -; --------------------------------- -_fs_chmod:: -;kernel/filesystem.c:32: } - ret -;kernel/filesystem.c:34: void fs_chown(inode_t *inode, uint8_t uid) -; --------------------------------- -; Function fs_chown -; --------------------------------- -_fs_chown:: -;kernel/filesystem.c:37: } - ret -;kernel/filesystem.c:39: int fs_rename(inode_t *inode, const char *name) -; --------------------------------- -; Function fs_rename -; --------------------------------- -_fs_rename:: -;kernel/filesystem.c:41: return 0; - ld hl,#0x0000 - ret - .area _CODE - .area _INITIALIZER - .area _CABS (ABS) diff --git a/sw/z80/build/kernel/filesystem.lst b/sw/z80/build/kernel/filesystem.lst deleted file mode 100644 index 80ecda7..0000000 --- a/sw/z80/build/kernel/filesystem.lst +++ /dev/null @@ -1,117 +0,0 @@ - 1 ;-------------------------------------------------------- - 2 ; File Created by SDCC : free open source ANSI-C Compiler - 3 ; Version 3.5.0 #9253 (Mar 24 2016) (Linux) - 4 ; This file was generated Wed Aug 23 21:44:59 2017 - 5 ;-------------------------------------------------------- - 6 .module filesystem - 7 .optsdcc -mz80 - 8 - 9 ;-------------------------------------------------------- - 10 ; Public variables in this module - 11 ;-------------------------------------------------------- - 12 .globl _fs_parse_superblock - 13 .globl _fs_parse_path - 14 .globl _fs_get_inode - 15 .globl _fs_new_inode - 16 .globl _fs_free_inode - 17 .globl _fs_chmod - 18 .globl _fs_chown - 19 .globl _fs_rename - 20 ;-------------------------------------------------------- - 21 ; special function registers - 22 ;-------------------------------------------------------- - 23 ;-------------------------------------------------------- - 24 ; ram data - 25 ;-------------------------------------------------------- - 26 .area _DATA - 27 ;-------------------------------------------------------- - 28 ; ram data - 29 ;-------------------------------------------------------- - 30 .area _INITIALIZED - 31 ;-------------------------------------------------------- - 32 ; absolute external ram data - 33 ;-------------------------------------------------------- - 34 .area _DABS (ABS) - 35 ;-------------------------------------------------------- - 36 ; global & static initialisations - 37 ;-------------------------------------------------------- - 38 .area _HOME - 39 .area _GSINIT - 40 .area _GSFINAL - 41 .area _GSINIT - 42 ;-------------------------------------------------------- - 43 ; Home - 44 ;-------------------------------------------------------- - 45 .area _HOME - 46 .area _HOME - 47 ;-------------------------------------------------------- - 48 ; code - 49 ;-------------------------------------------------------- - 50 .area _CODE - 51 ;kernel/filesystem.c:3: struct filesystem * fs_parse_superblock(struct filesystem *fs) - 52 ; --------------------------------- - 53 ; Function fs_parse_superblock - 54 ; --------------------------------- - 0000 55 _fs_parse_superblock:: - 56 ;kernel/filesystem.c:5: return 0; - 0000 21 00 00 [10] 57 ld hl,#0x0000 - 0003 C9 [10] 58 ret - 59 ;kernel/filesystem.c:9: uint16_t fs_parse_path(const char *path) - 60 ; --------------------------------- - 61 ; Function fs_parse_path - 62 ; --------------------------------- - 0004 63 _fs_parse_path:: - 64 ;kernel/filesystem.c:11: return 0; - 0004 21 00 00 [10] 65 ld hl,#0x0000 - 0007 5D [ 4] 66 ld e,l - 0008 54 [ 4] 67 ld d,h - 0009 C9 [10] 68 ret - 69 ;kernel/filesystem.c:15: inode_t * fs_get_inode(inode_t *buffer, uint16_t i_number) - 70 ; --------------------------------- - 71 ; Function fs_get_inode - 72 ; --------------------------------- - 000A 73 _fs_get_inode:: - 74 ;kernel/filesystem.c:17: return 0; - 000A 21 00 00 [10] 75 ld hl,#0x0000 - 000D C9 [10] 76 ret - 77 ;kernel/filesystem.c:20: inode_t * fs_new_inode(inode_t *inode, const char *name) - 78 ; --------------------------------- - 79 ; Function fs_new_inode - 80 ; --------------------------------- - 000E 81 _fs_new_inode:: - 82 ;kernel/filesystem.c:22: return 0; - 000E 21 00 00 [10] 83 ld hl,#0x0000 - 0011 C9 [10] 84 ret - 85 ;kernel/filesystem.c:25: int fs_free_inode(const inode_t *inode) - 86 ; --------------------------------- - 87 ; Function fs_free_inode - 88 ; --------------------------------- - 0012 89 _fs_free_inode:: - 90 ;kernel/filesystem.c:27: return 0; - 0012 21 00 00 [10] 91 ld hl,#0x0000 - 0015 C9 [10] 92 ret - 93 ;kernel/filesystem.c:30: void fs_chmod(inode_t *inode, uint8_t mode) - 94 ; --------------------------------- - 95 ; Function fs_chmod - 96 ; --------------------------------- - 0016 97 _fs_chmod:: - 98 ;kernel/filesystem.c:32: } - 0016 C9 [10] 99 ret - 100 ;kernel/filesystem.c:34: void fs_chown(inode_t *inode, uint8_t uid) - 101 ; --------------------------------- - 102 ; Function fs_chown - 103 ; --------------------------------- - 0017 104 _fs_chown:: - 105 ;kernel/filesystem.c:37: } - 0017 C9 [10] 106 ret - 107 ;kernel/filesystem.c:39: int fs_rename(inode_t *inode, const char *name) - 108 ; --------------------------------- - 109 ; Function fs_rename - 110 ; --------------------------------- - 0018 111 _fs_rename:: - 112 ;kernel/filesystem.c:41: return 0; - 0018 21 00 00 [10] 113 ld hl,#0x0000 - 001B C9 [10] 114 ret - 115 .area _CODE - 116 .area _INITIALIZER - 117 .area _CABS (ABS) diff --git a/sw/z80/build/kernel/filesystem.rel b/sw/z80/build/kernel/filesystem.rel deleted file mode 100644 index 3ccb28f..0000000 --- a/sw/z80/build/kernel/filesystem.rel +++ /dev/null @@ -1,54 +0,0 @@ -XL2 -H 9 areas 9 global symbols -M filesystem -O -mz80 -S .__.ABS. Def0000 -A _CODE size 1C flags 0 addr 0 -S _fs_get_inode Def000A -S _fs_parse_superblock Def0000 -S _fs_rename Def0018 -S _fs_new_inode Def000E -S _fs_chmod Def0016 -S _fs_free_inode Def0012 -S _fs_chown Def0017 -S _fs_parse_path Def0004 -A _DATA size 0 flags 0 addr 0 -A _INITIALIZED size 0 flags 0 addr 0 -A _DABS size 0 flags 8 addr 0 -A _HOME size 0 flags 0 addr 0 -A _GSINIT size 0 flags 0 addr 0 -A _GSFINAL size 0 flags 0 addr 0 -A _INITIALIZER size 0 flags 0 addr 0 -A _CABS size 0 flags 8 addr 0 -T 00 00 -R 00 00 00 00 -T 00 00 21 00 00 C9 -R 00 00 00 00 -T 04 00 -R 00 00 00 00 -T 04 00 21 00 00 5D 54 C9 -R 00 00 00 00 -T 0A 00 -R 00 00 00 00 -T 0A 00 21 00 00 C9 -R 00 00 00 00 -T 0E 00 -R 00 00 00 00 -T 0E 00 21 00 00 C9 -R 00 00 00 00 -T 12 00 -R 00 00 00 00 -T 12 00 21 00 00 C9 -R 00 00 00 00 -T 16 00 -R 00 00 00 00 -T 16 00 C9 -R 00 00 00 00 -T 17 00 -R 00 00 00 00 -T 17 00 C9 -R 00 00 00 00 -T 18 00 -R 00 00 00 00 -T 18 00 21 00 00 C9 -R 00 00 00 00 diff --git a/sw/z80/build/kernel/filesystem.sym b/sw/z80/build/kernel/filesystem.sym deleted file mode 100644 index 6e95911..0000000 --- a/sw/z80/build/kernel/filesystem.sym +++ /dev/null @@ -1,33 +0,0 @@ - ASxxxx Assembler V02.00 + NoICE + SDCC mods (Zilog Z80 / Hitachi HD64180), page 1. -Hexadecimal [16-Bits] - -Symbol Table - - .__.$$$. = 2710 L - .__.ABS. = 0000 G - .__.CPU. = 0000 L - .__.H$L. = 0000 L - 0 _fs_chmod 0016 GR - 0 _fs_chown 0017 GR - 0 _fs_free_inode 0012 GR - 0 _fs_get_inode 000A GR - 0 _fs_new_inode 000E GR - 0 _fs_parse_path 0004 GR - 0 _fs_parse_superblock 0000 GR - 0 _fs_rename 0018 GR - - ASxxxx Assembler V02.00 + NoICE + SDCC mods (Zilog Z80 / Hitachi HD64180), page 2. -Hexadecimal [16-Bits] - -Area Table - - 0 _CODE size 1C flags 0 - 1 _DATA size 0 flags 0 - 2 _INITIALIZED size 0 flags 0 - 3 _DABS size 0 flags 8 - 4 _HOME size 0 flags 0 - 5 _GSINIT size 0 flags 0 - 6 _GSFINAL size 0 flags 0 - 7 _INITIALIZER size 0 flags 0 - 8 _CABS size 0 flags 8 - diff --git a/sw/z80/build/kernel/kernel.asm b/sw/z80/build/kernel/kernel.asm deleted file mode 100644 index e0839fc..0000000 --- a/sw/z80/build/kernel/kernel.asm +++ /dev/null @@ -1,66 +0,0 @@ -;-------------------------------------------------------- -; File Created by SDCC : free open source ANSI-C Compiler -; Version 3.5.0 #9253 (Mar 24 2016) (Linux) -; This file was generated Wed Aug 23 21:44:59 2017 -;-------------------------------------------------------- - .module kernel - .optsdcc -mz80 - -;-------------------------------------------------------- -; Public variables in this module -;-------------------------------------------------------- - .globl _kmain - .globl _usart_init -;-------------------------------------------------------- -; special function registers -;-------------------------------------------------------- -;-------------------------------------------------------- -; ram data -;-------------------------------------------------------- - .area _DATA -;-------------------------------------------------------- -; ram data -;-------------------------------------------------------- - .area _INITIALIZED -;-------------------------------------------------------- -; absolute external ram data -;-------------------------------------------------------- - .area _DABS (ABS) -;-------------------------------------------------------- -; global & static initialisations -;-------------------------------------------------------- - .area _HOME - .area _GSINIT - .area _GSFINAL - .area _GSINIT -;-------------------------------------------------------- -; Home -;-------------------------------------------------------- - .area _HOME - .area _HOME -;-------------------------------------------------------- -; code -;-------------------------------------------------------- - .area _CODE -;kernel/kernel.c:4: void kmain(void) -; --------------------------------- -; Function kmain -; --------------------------------- -_kmain:: -;kernel/kernel.c:6: usart_init(USART_BAUDRATE_9600, USART_PARITY_EVEN, USART_STOP_BITS_1); - ld hl,#0x000A - push hl - ld l, #0x01 - push hl - ld hl,#0x0000 - push hl - ld hl,#0x000C - push hl - call _usart_init - ld hl,#8 - add hl,sp - ld sp,hl - ret - .area _CODE - .area _INITIALIZER - .area _CABS (ABS) diff --git a/sw/z80/build/kernel/kernel.lst b/sw/z80/build/kernel/kernel.lst deleted file mode 100644 index e839f83..0000000 --- a/sw/z80/build/kernel/kernel.lst +++ /dev/null @@ -1,66 +0,0 @@ - 1 ;-------------------------------------------------------- - 2 ; File Created by SDCC : free open source ANSI-C Compiler - 3 ; Version 3.5.0 #9253 (Mar 24 2016) (Linux) - 4 ; This file was generated Wed Aug 23 21:44:59 2017 - 5 ;-------------------------------------------------------- - 6 .module kernel - 7 .optsdcc -mz80 - 8 - 9 ;-------------------------------------------------------- - 10 ; Public variables in this module - 11 ;-------------------------------------------------------- - 12 .globl _kmain - 13 .globl _usart_init - 14 ;-------------------------------------------------------- - 15 ; special function registers - 16 ;-------------------------------------------------------- - 17 ;-------------------------------------------------------- - 18 ; ram data - 19 ;-------------------------------------------------------- - 20 .area _DATA - 21 ;-------------------------------------------------------- - 22 ; ram data - 23 ;-------------------------------------------------------- - 24 .area _INITIALIZED - 25 ;-------------------------------------------------------- - 26 ; absolute external ram data - 27 ;-------------------------------------------------------- - 28 .area _DABS (ABS) - 29 ;-------------------------------------------------------- - 30 ; global & static initialisations - 31 ;-------------------------------------------------------- - 32 .area _HOME - 33 .area _GSINIT - 34 .area _GSFINAL - 35 .area _GSINIT - 36 ;-------------------------------------------------------- - 37 ; Home - 38 ;-------------------------------------------------------- - 39 .area _HOME - 40 .area _HOME - 41 ;-------------------------------------------------------- - 42 ; code - 43 ;-------------------------------------------------------- - 44 .area _CODE - 45 ;kernel/kernel.c:4: void kmain(void) - 46 ; --------------------------------- - 47 ; Function kmain - 48 ; --------------------------------- - 0000 49 _kmain:: - 50 ;kernel/kernel.c:6: usart_init(USART_BAUDRATE_9600, USART_PARITY_EVEN, USART_STOP_BITS_1); - 0000 21 0A 00 [10] 51 ld hl,#0x000A - 0003 E5 [11] 52 push hl - 0004 2E 01 [ 7] 53 ld l, #0x01 - 0006 E5 [11] 54 push hl - 0007 21 00 00 [10] 55 ld hl,#0x0000 - 000A E5 [11] 56 push hl - 000B 21 0C 00 [10] 57 ld hl,#0x000C - 000E E5 [11] 58 push hl - 000F CDr00r00 [17] 59 call _usart_init - 0012 21 08 00 [10] 60 ld hl,#8 - 0015 39 [11] 61 add hl,sp - 0016 F9 [ 6] 62 ld sp,hl - 0017 C9 [10] 63 ret - 64 .area _CODE - 65 .area _INITIALIZER - 66 .area _CABS (ABS) diff --git a/sw/z80/build/kernel/kernel.rel b/sw/z80/build/kernel/kernel.rel deleted file mode 100644 index 103d026..0000000 --- a/sw/z80/build/kernel/kernel.rel +++ /dev/null @@ -1,22 +0,0 @@ -XL2 -H 9 areas 3 global symbols -M kernel -O -mz80 -S .__.ABS. Def0000 -S _usart_init Ref0000 -A _CODE size 18 flags 0 addr 0 -S _kmain Def0000 -A _DATA size 0 flags 0 addr 0 -A _INITIALIZED size 0 flags 0 addr 0 -A _DABS size 0 flags 8 addr 0 -A _HOME size 0 flags 0 addr 0 -A _GSINIT size 0 flags 0 addr 0 -A _GSFINAL size 0 flags 0 addr 0 -A _INITIALIZER size 0 flags 0 addr 0 -A _CABS size 0 flags 8 addr 0 -T 00 00 -R 00 00 00 00 -T 00 00 21 0A 00 E5 2E 01 E5 21 00 00 E5 21 0C 00 -R 00 00 00 00 -T 0E 00 E5 CD 00 00 21 08 00 39 F9 C9 -R 00 00 00 00 02 04 01 00 diff --git a/sw/z80/build/kernel/kernel.sym b/sw/z80/build/kernel/kernel.sym deleted file mode 100644 index b5145d5..0000000 --- a/sw/z80/build/kernel/kernel.sym +++ /dev/null @@ -1,27 +0,0 @@ - ASxxxx Assembler V02.00 + NoICE + SDCC mods (Zilog Z80 / Hitachi HD64180), page 1. -Hexadecimal [16-Bits] - -Symbol Table - - .__.$$$. = 2710 L - .__.ABS. = 0000 G - .__.CPU. = 0000 L - .__.H$L. = 0000 L - 0 _kmain 0000 GR - _usart_init **** GX - - ASxxxx Assembler V02.00 + NoICE + SDCC mods (Zilog Z80 / Hitachi HD64180), page 2. -Hexadecimal [16-Bits] - -Area Table - - 0 _CODE size 18 flags 0 - 1 _DATA size 0 flags 0 - 2 _INITIALIZED size 0 flags 0 - 3 _DABS size 0 flags 8 - 4 _HOME size 0 flags 0 - 5 _GSINIT size 0 flags 0 - 6 _GSFINAL size 0 flags 0 - 7 _INITIALIZER size 0 flags 0 - 8 _CABS size 0 flags 8 - diff --git a/sw/z80/build/kernel/memory.asm b/sw/z80/build/kernel/memory.asm deleted file mode 100644 index ffa5214..0000000 --- a/sw/z80/build/kernel/memory.asm +++ /dev/null @@ -1,186 +0,0 @@ -;-------------------------------------------------------- -; File Created by SDCC : free open source ANSI-C Compiler -; Version 3.5.0 #9253 (Mar 24 2016) (Linux) -; This file was generated Wed Aug 23 21:44:59 2017 -;-------------------------------------------------------- - .module memory - .optsdcc -mz80 - -;-------------------------------------------------------- -; Public variables in this module -;-------------------------------------------------------- - .globl _pages_table - .globl _mmu_write_table - .globl _page_map - .globl _page_unmap -;-------------------------------------------------------- -; special function registers -;-------------------------------------------------------- -;-------------------------------------------------------- -; ram data -;-------------------------------------------------------- - .area _DATA -_pages_table:: - .ds 192 -;-------------------------------------------------------- -; ram data -;-------------------------------------------------------- - .area _INITIALIZED -;-------------------------------------------------------- -; absolute external ram data -;-------------------------------------------------------- - .area _DABS (ABS) -;-------------------------------------------------------- -; global & static initialisations -;-------------------------------------------------------- - .area _HOME - .area _GSINIT - .area _GSFINAL - .area _GSINIT -;-------------------------------------------------------- -; Home -;-------------------------------------------------------- - .area _HOME - .area _HOME -;-------------------------------------------------------- -; code -;-------------------------------------------------------- - .area _CODE -;kernel/memory.c:5: int mmu_write_table(void) -; --------------------------------- -; Function mmu_write_table -; --------------------------------- -_mmu_write_table:: -;kernel/memory.c:9: for (i = 0; i < PAGES_MAX_COUNT; i++) { - ld hl,#0x0000 -00102$: - inc hl - ld a,l - sub a, #0x20 - ld a,h - rla - ccf - rra - sbc a, #0x80 - jr C,00102$ -;kernel/memory.c:15: return 0; - ld hl,#0x0000 - ret -;kernel/memory.c:18: int page_map(int page, int pid, uint16_t addr) -; --------------------------------- -; Function page_map -; --------------------------------- -_page_map:: - push ix - ld ix,#0 - add ix,sp -;kernel/memory.c:20: if (page >= PAGES_MAX_COUNT) - ld a,4 (ix) - sub a, #0x20 - ld a,5 (ix) - rla - ccf - rra - sbc a, #0x80 - jr C,00102$ -;kernel/memory.c:21: return -1; - ld hl,#0xFFFF - jr 00105$ -00102$: -;kernel/memory.c:23: if (pages_table[page].used) - ld de,#_pages_table+0 - ld c,4 (ix) - ld b,5 (ix) - ld l, c - ld h, b - add hl, hl - add hl, bc - add hl, hl - add hl,de - ld c,l - ld b,h - ld a,(hl) - and a,#0x01 - jr Z,00104$ -;kernel/memory.c:24: return -2; - ld hl,#0xFFFE - jr 00105$ -00104$: -;kernel/memory.c:26: pages_table[page].addr = addr; - ld e, c - ld d, b - inc de - inc de - push bc - ld hl, #0x000A - add hl, sp - ld bc, #0x0004 - ldir - pop bc -;kernel/memory.c:27: pages_table[page].pid = pid; - ld l, c - ld h, b - inc hl - ld a,6 (ix) - ld (hl),a -;kernel/memory.c:29: pages_table[page].used = 1; - ld a,(bc) - or a,#0x01 - ld (bc),a -;kernel/memory.c:30: return 0; - ld hl,#0x0000 -00105$: - pop ix - ret -;kernel/memory.c:33: int page_unmap(int page) -; --------------------------------- -; Function page_unmap -; --------------------------------- -_page_unmap:: - push ix - ld ix,#0 - add ix,sp -;kernel/memory.c:35: if (page >= PAGES_MAX_COUNT) - ld a,4 (ix) - sub a, #0x20 - ld a,5 (ix) - rla - ccf - rra - sbc a, #0x80 - jr C,00102$ -;kernel/memory.c:36: return -1; - ld hl,#0xFFFF - jr 00105$ -00102$: -;kernel/memory.c:38: if (pages_table[page].used == 0) - ld de,#_pages_table+0 - ld c,4 (ix) - ld b,5 (ix) - ld l, c - ld h, b - add hl, hl - add hl, bc - add hl, hl - add hl,de - ld e,l - ld d,h - ld a,(hl) - and a,#0x01 - jr NZ,00104$ -;kernel/memory.c:39: return -2; - ld hl,#0xFFFE - jr 00105$ -00104$: -;kernel/memory.c:41: pages_table[page].used = 0; - ld a,(de) - and a,#0xFE - ld (de),a -;kernel/memory.c:42: return 0; - ld hl,#0x0000 -00105$: - pop ix - ret - .area _CODE - .area _INITIALIZER - .area _CABS (ABS) diff --git a/sw/z80/build/kernel/memory.lst b/sw/z80/build/kernel/memory.lst deleted file mode 100644 index 5f229f5..0000000 --- a/sw/z80/build/kernel/memory.lst +++ /dev/null @@ -1,186 +0,0 @@ - 1 ;-------------------------------------------------------- - 2 ; File Created by SDCC : free open source ANSI-C Compiler - 3 ; Version 3.5.0 #9253 (Mar 24 2016) (Linux) - 4 ; This file was generated Wed Aug 23 21:44:59 2017 - 5 ;-------------------------------------------------------- - 6 .module memory - 7 .optsdcc -mz80 - 8 - 9 ;-------------------------------------------------------- - 10 ; Public variables in this module - 11 ;-------------------------------------------------------- - 12 .globl _pages_table - 13 .globl _mmu_write_table - 14 .globl _page_map - 15 .globl _page_unmap - 16 ;-------------------------------------------------------- - 17 ; special function registers - 18 ;-------------------------------------------------------- - 19 ;-------------------------------------------------------- - 20 ; ram data - 21 ;-------------------------------------------------------- - 22 .area _DATA - 0000 23 _pages_table:: - 0000 24 .ds 192 - 25 ;-------------------------------------------------------- - 26 ; ram data - 27 ;-------------------------------------------------------- - 28 .area _INITIALIZED - 29 ;-------------------------------------------------------- - 30 ; absolute external ram data - 31 ;-------------------------------------------------------- - 32 .area _DABS (ABS) - 33 ;-------------------------------------------------------- - 34 ; global & static initialisations - 35 ;-------------------------------------------------------- - 36 .area _HOME - 37 .area _GSINIT - 38 .area _GSFINAL - 39 .area _GSINIT - 40 ;-------------------------------------------------------- - 41 ; Home - 42 ;-------------------------------------------------------- - 43 .area _HOME - 44 .area _HOME - 45 ;-------------------------------------------------------- - 46 ; code - 47 ;-------------------------------------------------------- - 48 .area _CODE - 49 ;kernel/memory.c:5: int mmu_write_table(void) - 50 ; --------------------------------- - 51 ; Function mmu_write_table - 52 ; --------------------------------- - 0000 53 _mmu_write_table:: - 54 ;kernel/memory.c:9: for (i = 0; i < PAGES_MAX_COUNT; i++) { - 0000 21 00 00 [10] 55 ld hl,#0x0000 - 0003 56 00102$: - 0003 23 [ 6] 57 inc hl - 0004 7D [ 4] 58 ld a,l - 0005 D6 20 [ 7] 59 sub a, #0x20 - 0007 7C [ 4] 60 ld a,h - 0008 17 [ 4] 61 rla - 0009 3F [ 4] 62 ccf - 000A 1F [ 4] 63 rra - 000B DE 80 [ 7] 64 sbc a, #0x80 - 000D 38 F4 [12] 65 jr C,00102$ - 66 ;kernel/memory.c:15: return 0; - 000F 21 00 00 [10] 67 ld hl,#0x0000 - 0012 C9 [10] 68 ret - 69 ;kernel/memory.c:18: int page_map(int page, int pid, uint16_t addr) - 70 ; --------------------------------- - 71 ; Function page_map - 72 ; --------------------------------- - 0013 73 _page_map:: - 0013 DD E5 [15] 74 push ix - 0015 DD 21 00 00 [14] 75 ld ix,#0 - 0019 DD 39 [15] 76 add ix,sp - 77 ;kernel/memory.c:20: if (page >= PAGES_MAX_COUNT) - 001B DD 7E 04 [19] 78 ld a,4 (ix) - 001E D6 20 [ 7] 79 sub a, #0x20 - 0020 DD 7E 05 [19] 80 ld a,5 (ix) - 0023 17 [ 4] 81 rla - 0024 3F [ 4] 82 ccf - 0025 1F [ 4] 83 rra - 0026 DE 80 [ 7] 84 sbc a, #0x80 - 0028 38 05 [12] 85 jr C,00102$ - 86 ;kernel/memory.c:21: return -1; - 002A 21 FF FF [10] 87 ld hl,#0xFFFF - 002D 18 38 [12] 88 jr 00105$ - 002F 89 00102$: - 90 ;kernel/memory.c:23: if (pages_table[page].used) - 002F 11r00r00 [10] 91 ld de,#_pages_table+0 - 0032 DD 4E 04 [19] 92 ld c,4 (ix) - 0035 DD 46 05 [19] 93 ld b,5 (ix) - 0038 69 [ 4] 94 ld l, c - 0039 60 [ 4] 95 ld h, b - 003A 29 [11] 96 add hl, hl - 003B 09 [11] 97 add hl, bc - 003C 29 [11] 98 add hl, hl - 003D 19 [11] 99 add hl,de - 003E 4D [ 4] 100 ld c,l - 003F 44 [ 4] 101 ld b,h - 0040 7E [ 7] 102 ld a,(hl) - 0041 E6 01 [ 7] 103 and a,#0x01 - 0043 28 05 [12] 104 jr Z,00104$ - 105 ;kernel/memory.c:24: return -2; - 0045 21 FE FF [10] 106 ld hl,#0xFFFE - 0048 18 1D [12] 107 jr 00105$ - 004A 108 00104$: - 109 ;kernel/memory.c:26: pages_table[page].addr = addr; - 004A 59 [ 4] 110 ld e, c - 004B 50 [ 4] 111 ld d, b - 004C 13 [ 6] 112 inc de - 004D 13 [ 6] 113 inc de - 004E C5 [11] 114 push bc - 004F 21 0A 00 [10] 115 ld hl, #0x000A - 0052 39 [11] 116 add hl, sp - 0053 01 04 00 [10] 117 ld bc, #0x0004 - 0056 ED B0 [21] 118 ldir - 0058 C1 [10] 119 pop bc - 120 ;kernel/memory.c:27: pages_table[page].pid = pid; - 0059 69 [ 4] 121 ld l, c - 005A 60 [ 4] 122 ld h, b - 005B 23 [ 6] 123 inc hl - 005C DD 7E 06 [19] 124 ld a,6 (ix) - 005F 77 [ 7] 125 ld (hl),a - 126 ;kernel/memory.c:29: pages_table[page].used = 1; - 0060 0A [ 7] 127 ld a,(bc) - 0061 F6 01 [ 7] 128 or a,#0x01 - 0063 02 [ 7] 129 ld (bc),a - 130 ;kernel/memory.c:30: return 0; - 0064 21 00 00 [10] 131 ld hl,#0x0000 - 0067 132 00105$: - 0067 DD E1 [14] 133 pop ix - 0069 C9 [10] 134 ret - 135 ;kernel/memory.c:33: int page_unmap(int page) - 136 ; --------------------------------- - 137 ; Function page_unmap - 138 ; --------------------------------- - 006A 139 _page_unmap:: - 006A DD E5 [15] 140 push ix - 006C DD 21 00 00 [14] 141 ld ix,#0 - 0070 DD 39 [15] 142 add ix,sp - 143 ;kernel/memory.c:35: if (page >= PAGES_MAX_COUNT) - 0072 DD 7E 04 [19] 144 ld a,4 (ix) - 0075 D6 20 [ 7] 145 sub a, #0x20 - 0077 DD 7E 05 [19] 146 ld a,5 (ix) - 007A 17 [ 4] 147 rla - 007B 3F [ 4] 148 ccf - 007C 1F [ 4] 149 rra - 007D DE 80 [ 7] 150 sbc a, #0x80 - 007F 38 05 [12] 151 jr C,00102$ - 152 ;kernel/memory.c:36: return -1; - 0081 21 FF FF [10] 153 ld hl,#0xFFFF - 0084 18 22 [12] 154 jr 00105$ - 0086 155 00102$: - 156 ;kernel/memory.c:38: if (pages_table[page].used == 0) - 0086 11r00r00 [10] 157 ld de,#_pages_table+0 - 0089 DD 4E 04 [19] 158 ld c,4 (ix) - 008C DD 46 05 [19] 159 ld b,5 (ix) - 008F 69 [ 4] 160 ld l, c - 0090 60 [ 4] 161 ld h, b - 0091 29 [11] 162 add hl, hl - 0092 09 [11] 163 add hl, bc - 0093 29 [11] 164 add hl, hl - 0094 19 [11] 165 add hl,de - 0095 5D [ 4] 166 ld e,l - 0096 54 [ 4] 167 ld d,h - 0097 7E [ 7] 168 ld a,(hl) - 0098 E6 01 [ 7] 169 and a,#0x01 - 009A 20 05 [12] 170 jr NZ,00104$ - 171 ;kernel/memory.c:39: return -2; - 009C 21 FE FF [10] 172 ld hl,#0xFFFE - 009F 18 07 [12] 173 jr 00105$ - 00A1 174 00104$: - 175 ;kernel/memory.c:41: pages_table[page].used = 0; - 00A1 1A [ 7] 176 ld a,(de) - 00A2 E6 FE [ 7] 177 and a,#0xFE - 00A4 12 [ 7] 178 ld (de),a - 179 ;kernel/memory.c:42: return 0; - 00A5 21 00 00 [10] 180 ld hl,#0x0000 - 00A8 181 00105$: - 00A8 DD E1 [14] 182 pop ix - 00AA C9 [10] 183 ret - 184 .area _CODE - 185 .area _INITIALIZER - 186 .area _CABS (ABS) diff --git a/sw/z80/build/kernel/memory.rel b/sw/z80/build/kernel/memory.rel deleted file mode 100644 index a0cbbca..0000000 --- a/sw/z80/build/kernel/memory.rel +++ /dev/null @@ -1,76 +0,0 @@ -XL2 -H 9 areas 5 global symbols -M memory -O -mz80 -S .__.ABS. Def0000 -A _CODE size AB flags 0 addr 0 -S _page_map Def0013 -S _mmu_write_table Def0000 -S _page_unmap Def006A -A _DATA size C0 flags 0 addr 0 -S _pages_table Def0000 -A _INITIALIZED size 0 flags 0 addr 0 -A _DABS size 0 flags 8 addr 0 -A _HOME size 0 flags 0 addr 0 -A _GSINIT size 0 flags 0 addr 0 -A _GSFINAL size 0 flags 0 addr 0 -A _INITIALIZER size 0 flags 0 addr 0 -A _CABS size 0 flags 8 addr 0 -T 00 00 -R 00 00 01 00 -T 00 00 -R 00 00 01 00 -T 00 00 -R 00 00 00 00 -T 00 00 21 00 00 -R 00 00 00 00 -T 03 00 -R 00 00 00 00 -T 03 00 23 7D D6 20 7C 17 3F 1F DE 80 38 F4 21 -R 00 00 00 00 -T 10 00 00 00 C9 -R 00 00 00 00 -T 13 00 -R 00 00 00 00 -T 13 00 DD E5 DD 21 00 00 DD 39 DD 7E 04 D6 20 DD -R 00 00 00 00 -T 21 00 7E 05 17 3F 1F DE 80 38 05 21 FF FF 18 38 -R 00 00 00 00 -T 2F 00 -R 00 00 00 00 -T 2F 00 11 00 00 DD 4E 04 DD 46 05 69 60 29 09 29 -R 00 00 00 00 00 03 01 00 -T 3D 00 19 4D 44 7E E6 01 28 05 21 FE FF 18 1D -R 00 00 00 00 -T 4A 00 -R 00 00 00 00 -T 4A 00 59 50 13 13 C5 21 0A 00 39 01 04 00 ED B0 -R 00 00 00 00 -T 58 00 C1 69 60 23 DD 7E 06 77 0A F6 01 02 21 -R 00 00 00 00 -T 65 00 00 00 -R 00 00 00 00 -T 67 00 -R 00 00 00 00 -T 67 00 DD E1 C9 -R 00 00 00 00 -T 6A 00 -R 00 00 00 00 -T 6A 00 DD E5 DD 21 00 00 DD 39 DD 7E 04 D6 20 DD -R 00 00 00 00 -T 78 00 7E 05 17 3F 1F DE 80 38 05 21 FF FF 18 22 -R 00 00 00 00 -T 86 00 -R 00 00 00 00 -T 86 00 11 00 00 DD 4E 04 DD 46 05 69 60 29 09 29 -R 00 00 00 00 00 03 01 00 -T 94 00 19 5D 54 7E E6 01 20 05 21 FE FF 18 07 -R 00 00 00 00 -T A1 00 -R 00 00 00 00 -T A1 00 1A E6 FE 12 21 00 00 -R 00 00 00 00 -T A8 00 -R 00 00 00 00 -T A8 00 DD E1 C9 -R 00 00 00 00 diff --git a/sw/z80/build/kernel/memory.sym b/sw/z80/build/kernel/memory.sym deleted file mode 100644 index 26090e8..0000000 --- a/sw/z80/build/kernel/memory.sym +++ /dev/null @@ -1,30 +0,0 @@ - ASxxxx Assembler V02.00 + NoICE + SDCC mods (Zilog Z80 / Hitachi HD64180), page 1. -Hexadecimal [16-Bits] - -Symbol Table - - .__.$$$. = 2710 L - .__.ABS. = 0000 G - .__.CPU. = 0000 L - .__.H$L. = 0000 L - 0 _mmu_write_table 0000 GR - 0 _page_map 0013 GR - 0 _page_unmap 006A GR - 1 _pages_table 0000 GR - - - ASxxxx Assembler V02.00 + NoICE + SDCC mods (Zilog Z80 / Hitachi HD64180), page 2. -Hexadecimal [16-Bits] - -Area Table - - 0 _CODE size AB flags 0 - 1 _DATA size C0 flags 0 - 2 _INITIALIZED size 0 flags 0 - 3 _DABS size 0 flags 8 - 4 _HOME size 0 flags 0 - 5 _GSINIT size 0 flags 0 - 6 _GSFINAL size 0 flags 0 - 7 _INITIALIZER size 0 flags 0 - 8 _CABS size 0 flags 8 - diff --git a/sw/z80/build/kernel/process.asm b/sw/z80/build/kernel/process.asm deleted file mode 100644 index f50bb3d..0000000 --- a/sw/z80/build/kernel/process.asm +++ /dev/null @@ -1,89 +0,0 @@ -;-------------------------------------------------------- -; File Created by SDCC : free open source ANSI-C Compiler -; Version 3.5.0 #9253 (Mar 24 2016) (Linux) -; This file was generated Wed Aug 23 21:44:59 2017 -;-------------------------------------------------------- - .module process - .optsdcc -mz80 - -;-------------------------------------------------------- -; Public variables in this module -;-------------------------------------------------------- - .globl _proc_table - .globl _newpid - .globl _fork - .globl _exec - .globl _spawn -;-------------------------------------------------------- -; special function registers -;-------------------------------------------------------- -;-------------------------------------------------------- -; ram data -;-------------------------------------------------------- - .area _DATA -_proc_table:: - .ds 6375 -_newpid_last_pid_1_11: - .ds 1 -;-------------------------------------------------------- -; ram data -;-------------------------------------------------------- - .area _INITIALIZED -;-------------------------------------------------------- -; absolute external ram data -;-------------------------------------------------------- - .area _DABS (ABS) -;-------------------------------------------------------- -; global & static initialisations -;-------------------------------------------------------- - .area _HOME - .area _GSINIT - .area _GSFINAL - .area _GSINIT -;kernel/process.c:7: static pid_t last_pid = 0; - ld iy,#_newpid_last_pid_1_11 - ld 0 (iy),#0x00 -;-------------------------------------------------------- -; Home -;-------------------------------------------------------- - .area _HOME - .area _HOME -;-------------------------------------------------------- -; code -;-------------------------------------------------------- - .area _CODE -;kernel/process.c:5: pid_t newpid(void) -; --------------------------------- -; Function newpid -; --------------------------------- -_newpid:: -;kernel/process.c:8: return ++last_pid; - ld hl, #_newpid_last_pid_1_11+0 - inc (hl) - ld iy,#_newpid_last_pid_1_11 - ld l,0 (iy) - ret -;kernel/process.c:11: int fork(void) -; --------------------------------- -; Function fork -; --------------------------------- -_fork:: -;kernel/process.c:14: } - ret -;kernel/process.c:16: int exec(char *path, char *args) -; --------------------------------- -; Function exec -; --------------------------------- -_exec:: -;kernel/process.c:19: } - ret -;kernel/process.c:21: int spawn(char *path, char *args) -; --------------------------------- -; Function spawn -; --------------------------------- -_spawn:: -;kernel/process.c:24: } - ret - .area _CODE - .area _INITIALIZER - .area _CABS (ABS) diff --git a/sw/z80/build/kernel/process.lst b/sw/z80/build/kernel/process.lst deleted file mode 100644 index eb73943..0000000 --- a/sw/z80/build/kernel/process.lst +++ /dev/null @@ -1,89 +0,0 @@ - 1 ;-------------------------------------------------------- - 2 ; File Created by SDCC : free open source ANSI-C Compiler - 3 ; Version 3.5.0 #9253 (Mar 24 2016) (Linux) - 4 ; This file was generated Wed Aug 23 21:44:59 2017 - 5 ;-------------------------------------------------------- - 6 .module process - 7 .optsdcc -mz80 - 8 - 9 ;-------------------------------------------------------- - 10 ; Public variables in this module - 11 ;-------------------------------------------------------- - 12 .globl _proc_table - 13 .globl _newpid - 14 .globl _fork - 15 .globl _exec - 16 .globl _spawn - 17 ;-------------------------------------------------------- - 18 ; special function registers - 19 ;-------------------------------------------------------- - 20 ;-------------------------------------------------------- - 21 ; ram data - 22 ;-------------------------------------------------------- - 23 .area _DATA - 0000 24 _proc_table:: - 0000 25 .ds 6375 - 18E7 26 _newpid_last_pid_1_11: - 18E7 27 .ds 1 - 28 ;-------------------------------------------------------- - 29 ; ram data - 30 ;-------------------------------------------------------- - 31 .area _INITIALIZED - 32 ;-------------------------------------------------------- - 33 ; absolute external ram data - 34 ;-------------------------------------------------------- - 35 .area _DABS (ABS) - 36 ;-------------------------------------------------------- - 37 ; global & static initialisations - 38 ;-------------------------------------------------------- - 39 .area _HOME - 40 .area _GSINIT - 41 .area _GSFINAL - 42 .area _GSINIT - 43 ;kernel/process.c:7: static pid_t last_pid = 0; - 0000 FD 21rE7r18 [14] 44 ld iy,#_newpid_last_pid_1_11 - 0004 FD 36 00 00 [19] 45 ld 0 (iy),#0x00 - 46 ;-------------------------------------------------------- - 47 ; Home - 48 ;-------------------------------------------------------- - 49 .area _HOME - 50 .area _HOME - 51 ;-------------------------------------------------------- - 52 ; code - 53 ;-------------------------------------------------------- - 54 .area _CODE - 55 ;kernel/process.c:5: pid_t newpid(void) - 56 ; --------------------------------- - 57 ; Function newpid - 58 ; --------------------------------- - 0000 59 _newpid:: - 60 ;kernel/process.c:8: return ++last_pid; - 0000 21rE7r18 [10] 61 ld hl, #_newpid_last_pid_1_11+0 - 0003 34 [11] 62 inc (hl) - 0004 FD 21rE7r18 [14] 63 ld iy,#_newpid_last_pid_1_11 - 0008 FD 6E 00 [19] 64 ld l,0 (iy) - 000B C9 [10] 65 ret - 66 ;kernel/process.c:11: int fork(void) - 67 ; --------------------------------- - 68 ; Function fork - 69 ; --------------------------------- - 000C 70 _fork:: - 71 ;kernel/process.c:14: } - 000C C9 [10] 72 ret - 73 ;kernel/process.c:16: int exec(char *path, char *args) - 74 ; --------------------------------- - 75 ; Function exec - 76 ; --------------------------------- - 000D 77 _exec:: - 78 ;kernel/process.c:19: } - 000D C9 [10] 79 ret - 80 ;kernel/process.c:21: int spawn(char *path, char *args) - 81 ; --------------------------------- - 82 ; Function spawn - 83 ; --------------------------------- - 000E 84 _spawn:: - 85 ;kernel/process.c:24: } - 000E C9 [10] 86 ret - 87 .area _CODE - 88 .area _INITIALIZER - 89 .area _CABS (ABS) diff --git a/sw/z80/build/kernel/process.rel b/sw/z80/build/kernel/process.rel deleted file mode 100644 index f4908e9..0000000 --- a/sw/z80/build/kernel/process.rel +++ /dev/null @@ -1,45 +0,0 @@ -XL2 -H 9 areas 6 global symbols -M process -O -mz80 -S .__.ABS. Def0000 -A _CODE size F flags 0 addr 0 -S _exec Def000D -S _spawn Def000E -S _fork Def000C -S _newpid Def0000 -A _DATA size 18E8 flags 0 addr 0 -S _proc_table Def0000 -A _INITIALIZED size 0 flags 0 addr 0 -A _DABS size 0 flags 8 addr 0 -A _HOME size 0 flags 0 addr 0 -A _GSINIT size 8 flags 0 addr 0 -A _GSFINAL size 0 flags 0 addr 0 -A _INITIALIZER size 0 flags 0 addr 0 -A _CABS size 0 flags 8 addr 0 -T 00 00 -R 00 00 01 00 -T 00 00 -R 00 00 01 00 -T E7 18 -R 00 00 01 00 -T E7 18 -R 00 00 01 00 -T 00 00 FD 21 E7 18 FD 36 00 00 -R 00 00 05 00 00 04 01 00 -T 00 00 -R 00 00 00 00 -T 00 00 21 E7 18 34 FD 21 E7 18 FD 6E 00 C9 -R 00 00 00 00 00 03 01 00 00 08 01 00 -T 0C 00 -R 00 00 00 00 -T 0C 00 C9 -R 00 00 00 00 -T 0D 00 -R 00 00 00 00 -T 0D 00 C9 -R 00 00 00 00 -T 0E 00 -R 00 00 00 00 -T 0E 00 C9 -R 00 00 00 00 diff --git a/sw/z80/build/kernel/process.sym b/sw/z80/build/kernel/process.sym deleted file mode 100644 index f6884cd..0000000 --- a/sw/z80/build/kernel/process.sym +++ /dev/null @@ -1,32 +0,0 @@ - ASxxxx Assembler V02.00 + NoICE + SDCC mods (Zilog Z80 / Hitachi HD64180), page 1. -Hexadecimal [16-Bits] - -Symbol Table - - .__.$$$. = 2710 L - .__.ABS. = 0000 G - .__.CPU. = 0000 L - .__.H$L. = 0000 L - 0 _exec 000D GR - 0 _fork 000C GR - 0 _newpid 0000 GR - 1 _newpid_last_pid_1_11 18E7 R - 1 _proc_table 0000 GR - 0 _spawn 000E GR - - - ASxxxx Assembler V02.00 + NoICE + SDCC mods (Zilog Z80 / Hitachi HD64180), page 2. -Hexadecimal [16-Bits] - -Area Table - - 0 _CODE size F flags 0 - 1 _DATA size 18E8 flags 0 - 2 _INITIALIZED size 0 flags 0 - 3 _DABS size 0 flags 8 - 4 _HOME size 0 flags 0 - 5 _GSINIT size 8 flags 0 - 6 _GSFINAL size 0 flags 0 - 7 _INITIALIZER size 0 flags 0 - 8 _CABS size 0 flags 8 - diff --git a/sw/z80/crt0.rel b/sw/z80/crt0.rel deleted file mode 100644 index 880fd57..0000000 --- a/sw/z80/crt0.rel +++ /dev/null @@ -1,86 +0,0 @@ -XL2 -H 14 areas 5 global symbols -M crt0 -S .__.ABS. Def0000 -S _kmain Ref0000 -A _CODE size A flags 0 addr 0 -S __clock Def0000 -S _exit Def0004 -A _HEADER size 0 flags 8 addr 0 -A _HEADER0 size 3 flags 8 addr 0 -A _HEADER1 size 2 flags 8 addr 8 -A _HEADER2 size 2 flags 8 addr 10 -A _HEADER3 size 2 flags 8 addr 18 -A _HEADER4 size 2 flags 8 addr 20 -A _HEADER5 size 2 flags 8 addr 28 -A _HEADER6 size 2 flags 8 addr 30 -A _HEADER7 size 2 flags 8 addr 38 -A _HEADER8 size C flags 8 addr 100 -A _HOME size 0 flags 0 addr 0 -A _INITIALIZER size 0 flags 0 addr 0 -A _GSINIT size 6 flags 0 addr 0 -S gsinit Def0000 -A _GSFINAL size 1 flags 0 addr 0 -A _DATA size 0 flags 0 addr 0 -A _INITIALIZED size 0 flags 0 addr 0 -A _BSEG size 0 flags 0 addr 0 -A _BSS size 0 flags 0 addr 0 -A _HEAP size 0 flags 0 addr 0 -T 00 00 -R 00 00 02 00 -T 00 00 C3 00 01 -R 00 00 02 00 00 03 0A 00 -T 08 00 -R 00 00 03 00 -T 08 00 ED 4D -R 00 00 03 00 -T 10 00 -R 00 00 04 00 -T 10 00 ED 4D -R 00 00 04 00 -T 18 00 -R 00 00 05 00 -T 18 00 ED 4D -R 00 00 05 00 -T 20 00 -R 00 00 06 00 -T 20 00 ED 4D -R 00 00 06 00 -T 28 00 -R 00 00 07 00 -T 28 00 ED 4D -R 00 00 07 00 -T 30 00 -R 00 00 08 00 -T 30 00 ED 4D -R 00 00 08 00 -T 38 00 -R 00 00 09 00 -T 38 00 ED 4D -R 00 00 09 00 -T 00 01 -R 00 00 0A 00 -T 00 01 -R 00 00 0A 00 -T 00 01 31 FF FF CD 00 00 CD 00 00 C3 04 00 -R 00 00 0A 00 00 06 0D 00 02 09 01 00 00 0C 00 00 -T 00 00 -R 00 00 00 00 -T 00 00 3E 02 CF C9 -R 00 00 00 00 -T 04 00 -R 00 00 00 00 -T 04 00 3E 00 CF -R 00 00 00 00 -T 07 00 -R 00 00 00 00 -T 07 00 76 18 FD -R 00 00 00 00 -T 00 00 -R 00 00 0D 00 -T 00 00 78 B1 28 02 ED B0 -R 00 00 0D 00 -T 06 00 -R 00 00 0D 00 -T 00 00 C9 -R 00 00 0E 00 diff --git a/sw/z80/kernel/drivers/ctc.c b/sw/z80/kernel/drivers/ctc.c new file mode 100644 index 0000000..e23ed8e --- /dev/null +++ b/sw/z80/kernel/drivers/ctc.c @@ -0,0 +1 @@ +#include "drivers/ctc.h"
\ No newline at end of file diff --git a/sw/z80/kernel/drivers/pio.c b/sw/z80/kernel/drivers/pio.c index 289ebe0..4321fb8 100644 --- a/sw/z80/kernel/drivers/pio.c +++ b/sw/z80/kernel/drivers/pio.c @@ -3,17 +3,38 @@ static uint8_t *pio_port = (uint8_t *) ADDR_DEV_PIO; static uint8_t *pio_ctrl = (uint8_t *) (ADDR_DEV_PIO + 2); -void _pio_data(int port, uint8_t data) +inline void _pio_data(int port, uint8_t data) { *(pio_port + port) = data; } -void _pio_command(int port, uint8_t cmd) +inline void _pio_control(int port, uint8_t cmd) { *(pio_ctrl + port) = cmd; } -/* void pio_set_mode(int port, int mode) +void pio_set_mode(int port, int mode, uint8_t io) { + // 0x0F is a control sequence to set mode + _pio_control(port, ((mode << 6) | 0x0F)); -} */ + // this mode requires an additional argument that sets + // a mode for each pin + if (mode == PIO_MODE_BIT_IO) { + _pio_control(port, io); + } +} + +void pio_set_interrupts(int port, int control) +{ + // 0x07 is a control sequence to set interrupts + _pio_control(port, (control | 0x07)); +} + +void pio_set_interrupts_mask(int port, int control, uint8_t mask) +{ + // 0x17 is a control sequence to set interrupts + // and to interpret the next byte as a mask + _pio_control(port, (control | 0x17)); + _pio_control(port, mask); +} diff --git a/sw/z80/kernel/include/drivers/ctc.h b/sw/z80/kernel/include/drivers/ctc.h new file mode 100644 index 0000000..488e02b --- /dev/null +++ b/sw/z80/kernel/include/drivers/ctc.h @@ -0,0 +1,6 @@ +#ifndef __CTC_H__ +#define __CTC_H__ + +void ctc_control() + +#endif /* __CTC_H__ */
\ No newline at end of file diff --git a/sw/z80/kernel/include/drivers/pio.h b/sw/z80/kernel/include/drivers/pio.h index 5d289ca..0df2ed0 100644 --- a/sw/z80/kernel/include/drivers/pio.h +++ b/sw/z80/kernel/include/drivers/pio.h @@ -7,25 +7,27 @@ #define PIO_A 0 #define PIO_B 1 -#define PIO_MODE_0 0 -#define PIO_MODE_1 1 -#define PIO_MODE_2 2 -#define PIO_MODE_3 3 +#define PIO_MODE_BYTE_IN 0 +#define PIO_MODE_BYTE_OUT 1 +#define PIO_MODE_BYTE_BI 2 +#define PIO_MODE_BIT_IO 3 #define PIO_INT_ACTIVE_HIGH (1<<5) #define PIO_INT_AND_MODE (1<<6) #define PIO_INT_ENABLE (1<<7) -void _pio_data(int port, uint8_t data); -void _pio_command(int port, uint8_t cmd); +inline void _pio_data(int port, uint8_t data); +inline void _pio_control(int port, uint8_t cmd); + +void pio_set_mode(int port, int mode, uint8_t io); -void pio_set_mode(int port, int mode); void pio_set_interrupts(int port, int control); -void pio_set_interrupts_mask(int port, uint8_t mask); -void pio_set_io(int port, uint8_t io); +void pio_set_interrupts_mask(int port, int control, uint8_t mask); // uint8_t pio_read_data(int port); +uint8_t pio_read(int port); +void pio_write(int port, uint8_t data); inline int pio_read_pin(int port, uint8_t pin); inline void pio_write_pin(int port, uint8_t pin); diff --git a/sw/z80/kernel/include/fs/fs.h b/sw/z80/kernel/include/fs/fs.h index b92303d..ad20adb 100644 --- a/sw/z80/kernel/include/fs/fs.h +++ b/sw/z80/kernel/include/fs/fs.h @@ -44,7 +44,7 @@ struct fs_inode #define FS_INODE_ROOT(inode) {inode.dev = 0xff; inode.inode = 0x0} #define FS_INODE_NULL(inode) {inode.dev = 0x80; inode.inode = 0x0} -#define FS_USE_ROM(inode) inode.dev == 0x7f +#define FS_USE_ROM(inode) {inode.dev == 0x7f} /* get block seek in current device */ devsize_t fs_block(blk_t block); diff --git a/sw/z80/kernel/include/memory.h b/sw/z80/kernel/include/memory.h index 45fc325..67c4b88 100644 --- a/sw/z80/kernel/include/memory.h +++ b/sw/z80/kernel/include/memory.h @@ -6,6 +6,7 @@ /* maximum number of pages on the system */ #define PAGES_MAX_COUNT 32 +#define PAGE_SIZE 1000 /* in our system there are only 16 pages since only 64KB can be addressed * to optimize the memory management in ROM and RAM only pages from this set @@ -31,17 +32,18 @@ #define ADDR_PAGE_14 0xE000 #define ADDR_PAGE_15 0xF000 +#define ADDR_PAGE_FIRST ADDR_PAGE_8 +#define ADDR_PAGE_LAST ADDR_PAGE_15 + struct page { - uint used :1; - pid_t pid; // process owner of the page + pid_t pid; // process owner of the page (0 if free) uint16_t addr; // physical address }; -extern struct page pages_table[PAGES_MAX_COUNT]; - int mmu_write_table(void); +int page_new(void); int page_map(int page, int pid, uint16_t addr); int page_unmap(int page); diff --git a/sw/z80/kernel/include/process.h b/sw/z80/kernel/include/process.h index d7aa7fd..3b0c843 100644 --- a/sw/z80/kernel/include/process.h +++ b/sw/z80/kernel/include/process.h @@ -9,6 +9,12 @@ */ #define PROC_COUNT 2 +/* the pid is defined with a single byte (pid_t is uint8_t), because of that + * there cannot be more than 255 processes open at the same time. this is a + * limitation but for our purposes is more than enough + */ +#define PID_COUNT_MAX 255 + struct executable { void *text; @@ -19,19 +25,12 @@ struct executable struct process { - uint blocked :1; // process is waiting for hardware or locked - uint running :1; // pid is used - struct page pages[4]; // pages used by the process - // TODO: implement quick callback? + uint blocked :1; // process is waiting for hardware or locked + uint running :1; // pid is used + uint pages; // number of pages used by the process + struct page page[4]; // pages used by the process }; -/* the pid is defined with a single byte (pid_t is uint8_t), because of that - * there cannot be more than 255 processes open at the same time. this is a - * limitation but for our purposes is more than enough - */ -extern struct process proc_table[255]; -extern struct process *current_proc; - pid_t newpid(void); int fork(void); diff --git a/sw/z80/kernel/include/syscall.h b/sw/z80/kernel/include/syscall.h deleted file mode 100644 index 29941c9..0000000 --- a/sw/z80/kernel/include/syscall.h +++ /dev/null @@ -1,20 +0,0 @@ -#ifndef __SYS_CALL_H__ -#define __SYS_CALL_H__ - -/* -* Enable / disable virtual address traslation -*/ - -extern void v_addr(uint8_t flag); - -/* -* Programs execution -*/ - -extern void prog_exec_0(void); -extern void prog_exec_1(void); - -extern void prog_stop_0(void); -extern void prog_stop_1(void); - -#endif
\ No newline at end of file diff --git a/sw/z80/kernel/include/types.h b/sw/z80/kernel/include/types.h index c01afb2..c6e620b 100644 --- a/sw/z80/kernel/include/types.h +++ b/sw/z80/kernel/include/types.h @@ -3,39 +3,35 @@ /* only types from primitive types are defined in this file */ -#define register_t volatile unsigned char +typedef volatile unsigned char register_t; -#define uint unsigned int +typedef unsigned int uint; -#define int8_t char -#define uint8_t unsigned char -#define int16_t int -#define uint16_t unsigned short int +typedef char int8_t; +typedef unsigned char uint8_t; +typedef int int16_t; +typedef unsigned int uint16_t; +typedef long int int32_t; +typedef unsigned long int uint32_t; -#define uint32_t unsigned long int +typedef uint16_t size_t; +typedef int16_t ssize_t; -#define size_t uint16_t -#define ssize_t int16_t -#define pid_t uint8_t +typedef uint8_t pid_t; +typedef uint16_t ino_t; -#define ino_t uint16_t +typedef uint8_t dev_t; +typedef uint32_t devsize_t; +typedef uint8_t fd_t; +typedef uint16_t blk_t; +typedef uint8_t user_t; -#define dev_t uint8_t -#define devsize_t uint32_t - -#define fd_t uint8_t - -#define blk_t uint16_t - -#define user_t int8_t - -typedef struct -{ +typedef struct { uint8_t member[3]; } uint24_t; -#define fsize_t uint32_t +typedef uint32_t fsize_t; typedef struct { diff --git a/sw/z80/kernel/memory.c b/sw/z80/kernel/memory.c index bcda3c3..cda62ca 100644 --- a/sw/z80/kernel/memory.c +++ b/sw/z80/kernel/memory.c @@ -1,13 +1,13 @@ #include "memory.h" -struct page pages_table[PAGES_MAX_COUNT]; +static struct page pages_table[PAGES_MAX_COUNT]; int mmu_write_table(void) { int i; for (i = 0; i < PAGES_MAX_COUNT; i++) { - if (pages_table[i].used) { + if (pages_table[i].pid != 0) { // write to mmu table } } @@ -15,18 +15,37 @@ int mmu_write_table(void) return 0; } +int page_new(void) +{ + int i, addr, used; + for (addr = ADDR_PAGE_FIRST; addr < ADDR_PAGE_LAST; addr += PAGE_SIZE) { + used = 0; + + for (i = 0; i < PAGES_MAX_COUNT; i++) { + if (page_map[i].addr == addr) { + used = 1; + break; + } + } + + if (!used) + return i; + } + + return -1; +} + int page_map(int page, int pid, uint16_t addr) { if (page >= PAGES_MAX_COUNT) return -1; - if (pages_table[page].used) + if (pages_table[page].pid != 0) return -2; pages_table[page].addr = addr; pages_table[page].pid = pid; - pages_table[page].used = 1; return 0; } @@ -35,10 +54,11 @@ int page_unmap(int page) if (page >= PAGES_MAX_COUNT) return -1; - if (pages_table[page].used == 0) + if (pages_table[page].pid == 0) return -2; - pages_table[page].used = 0; + pages_table[page].pid = 0; + pages_table[page].addr = 0; return 0; } diff --git a/sw/z80/kernel/process.c b/sw/z80/kernel/process.c index 49b86b8..049c88c 100644 --- a/sw/z80/kernel/process.c +++ b/sw/z80/kernel/process.c @@ -1,16 +1,48 @@ #include "process.h" -struct process proc_table[255]; +static struct process proc_table[PID_COUNT_MAX]; +static struct process *current_proc; pid_t newpid(void) { + int i; static pid_t last_pid = 0; - return ++last_pid; + + for (i = 0; i < PID_COUNT_MAX; i++, last_pid++) { + if (last_pid == PID_COUNT_MAX) { + last_pid = 0; + continue; + } + + if (!proc_table[last_pid].running) + break; + } + + if (i >= PID_COUNT_MAX) + return 0; + + return last_pid; } int fork(void) { - + int i, p; + pid_t child_pid = newpid(); + + if (child_pid == 0) + return -1; + + + for (i = 0; i < current_proc.pages; i++) { + p = page_new(); + + if (p == -1) { + + return -2; + } + + proc_table[child_pid].page[i] = p; + } } int exec(char *path, char *args) diff --git a/sw/z80/libc/string.c b/sw/z80/libc/string.c index 9dd56cc..57b3a7f 100644 --- a/sw/z80/libc/string.c +++ b/sw/z80/libc/string.c @@ -1,11 +1,11 @@ #include "string.h" -void * memset(void *dest, const int8_t src, size_t n) { +void *memset(void *dest, const int8_t src, size_t n) { - void *dp = dest; + char *dp = (char *) dest; while (n--) - *dp++ = src; + *(dp++) = src; return dest; } @@ -22,16 +22,14 @@ void *memcpy(void *dest, void *src, size_t n) return dest; } -int8_t memcmp(const void *s1, const void *s2, size_t n) { - - uint8_t u1, u2; - - for ( ; n--; s1++, s2++) { +int8_t memcmp(void *s1, void *s2, size_t n) +{ + char *u1 = (char *) s1; + char *u2 = (char *) s2; - u1 = *s1; - u2 = *s2; + for ( ; n--; u1++, u2++) { - if (u1 != u2) + if (*u1 != *u2) return u1 - u2; } diff --git a/sw/z80/makefile b/sw/z80/makefile index 5047824..5ab7e93 100644 --- a/sw/z80/makefile +++ b/sw/z80/makefile @@ -20,6 +20,7 @@ CFLAGS := -mz80 \ -I kernel/include \ -I kernel/include/drivers \ -I libc/include \ + --opt-code-size \ -DDEBUG LDFLAGS := -mz80 --no-std-crt0 crt0.rel \ @@ -43,7 +44,7 @@ crt0.rel: crt0.s sdasz80 -o $< dirs: - mkdir -p build build/kernel build/libc + mkdir -p build build/kernel build/libc build/kernel/drivers dis: $(BINARY) @# z80dasm -a -l -g 0h $< -o build/$(OSNAME).s diff --git a/sw/z80_test/crt0.s b/sw/z80_test/crt0.s new file mode 100644 index 0000000..7701ca6 --- /dev/null +++ b/sw/z80_test/crt0.s @@ -0,0 +1,103 @@ +;-------------------------------------------------------------------------- +; crt0.s - Generic crt0.s for a Z80 +; +; Copyright (C) 2000, Michael Hope +; +; This library is free software; you can redistribute it and/or modify it +; under the terms of the GNU General Public License as published by the +; Free Software Foundation; either version 2, or (at your option) any +; later version. +; +; This library is distributed in the hope that it will be useful, +; but WITHOUT ANY WARRANTY; without even the implied warranty of +; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +; GNU General Public License for more details. +; +; You should have received a copy of the GNU General Public License +; along with this library; see the file COPYING. If not, write to the +; Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, +; MA 02110-1301, USA. +; +; As a special exception, if you link this library with other files, +; some of which are compiled with SDCC, to produce an executable, +; this library does not by itself cause the resulting executable to +; be covered by the GNU General Public License. This exception does +; not however invalidate any other reasons why the executable file +; might be covered by the GNU General Public License. +;-------------------------------------------------------------------------- + + .module crt0 + .globl _main + + .area _HEADER (ABS) + ;; Reset vector + .org 0 + jp init + + .org 0x08 + reti + .org 0x10 + reti + .org 0x18 + reti + .org 0x20 + reti + .org 0x28 + reti + .org 0x30 + reti + .org 0x38 + reti + + .org 0x100 +init: + ;; Set stack pointer directly above top of memory. + ld sp,#0xFFFF + + ;; Initialise global variables + call gsinit + call _main + jp _exit + + ;; Ordering of segments for the linker. + .area _HOME + .area _CODE + .area _INITIALIZER + .area _GSINIT + .area _GSFINAL + + .area _DATA + .area _INITIALIZED + .area _BSEG + .area _BSS + .area _HEAP + + .area _CODE + +__clock:: + ld a,#2 + rst 0x08 + ret + +_exit:: + ;; Exit - special code to the emulator + ld a,#0 + rst 0x08 +1$: + halt + jr 1$ + + .area _GSINIT +gsinit:: + ; ld bc, #l__INITIALIZER + ld a, b + or a, c + jr Z, gsinit_next + ; ld de, #s__INITIALIZED + ; ld hl, #s__INITIALIZER + ldir +gsinit_next: + + .area _GSFINAL + ret + diff --git a/sw/z80_test/ctc.c b/sw/z80_test/ctc.c new file mode 100644 index 0000000..3a4e7d5 --- /dev/null +++ b/sw/z80_test/ctc.c @@ -0,0 +1,7 @@ +#include "ctc.h" + +void ctc_control() +{ + +} + diff --git a/sw/z80_test/ctc.h b/sw/z80_test/ctc.h new file mode 100644 index 0000000..c6b3150 --- /dev/null +++ b/sw/z80_test/ctc.h @@ -0,0 +1,6 @@ +#ifndef __CTC_H__ +#define __CTC_H__ + +void ctc_control(); + +#endif /* __CTC_H__ */
\ No newline at end of file diff --git a/sw/z80_test/devices.h b/sw/z80_test/devices.h new file mode 100644 index 0000000..a846f9b --- /dev/null +++ b/sw/z80_test/devices.h @@ -0,0 +1,15 @@ +#ifndef __DEVICES_H__ +#define __DEVICES_H__ + +#define ADDR_DEV_ROM_L 0x0000 +#define ADDR_DEV_ROM_H 0x2000 + +#define ADDR_DEV_USART 0x4000 +#define ADDR_DEV_CTC 0x4100 +#define ADDR_DEV_PIO 0x4200 + +#define ADDR_DEV_MMU + +#define ADDR_DEV_RAM 0x8000 + +#endif diff --git a/sw/z80_test/main.c b/sw/z80_test/main.c new file mode 100644 index 0000000..d2e1d8e --- /dev/null +++ b/sw/z80_test/main.c @@ -0,0 +1,11 @@ +#include "usart.h" + +void main(void) +{ + usart_init(USART_BAUDRATE_1200, USART_PARITY_EVEN, USART_STOP_BITS_1); + usart_write("Hello, World!\n", 13); + + while(1) { + usart_write("done\n", 5); + } +} diff --git a/sw/z80_test/makefile b/sw/z80_test/makefile new file mode 100644 index 0000000..6f054ae --- /dev/null +++ b/sw/z80_test/makefile @@ -0,0 +1,52 @@ +#### +# source code settings +# +OSNAME := sample + +CSOURCES := $(wildcard *.c) + +OBJECTS := $(patsubst %.c,build/%.rel,$(CSOURCES)) +HEXFILE := build/$(OSNAME).hex +BINARY := build/$(OSNAME).bin + +### +# compiler settings + +CC := sdcc + +CFLAGS := -mz80 \ + -I . \ + -DDEBUG + +LDFLAGS := -mz80 --no-std-crt0 build/crt0.rel \ + --std-c89 -pedantic \ + --code-loc 0x0800 --data-loc 0x2000 + +.PHONY: dirs dis clean +all: $(BINARY) + +# build binary +$(BINARY): $(OBJECTS) dirs + $(CC) $(LDFLAGS) $(OBJECTS) -o $(HEXFILE) + @# xxd -r -p $(HEXFILE) $(BINARY) + @# makebin -s 16384 $(HEXFILE) $(BINARY) + makebin -s 8192 $(HEXFILE) $(BINARY) + +$(OBJECTS): build/%.rel : %.c $(CSOURCES) dirs build/crt0.rel + @printf "\n" + $(CC) $(CFLAGS) -c $< -o $@ + +build/crt0.rel: crt0.s + sdasz80 -o $< + @mv crt0.rel build/ + +dirs: + mkdir -p build + +dis: $(BINARY) + @# z80dasm -a -l -g 0h $< -o build/$(OSNAME).s + dz80 -b -n $< + +clean: + - rm -rd build/* + - rm crt0.rel diff --git a/sw/z80_test/pio.c b/sw/z80_test/pio.c new file mode 100644 index 0000000..5ca9149 --- /dev/null +++ b/sw/z80_test/pio.c @@ -0,0 +1,40 @@ +#include "pio.h" + +static uint8_t *pio_port = (uint8_t *) ADDR_DEV_PIO; +static uint8_t *pio_ctrl = (uint8_t *) (ADDR_DEV_PIO + 2); + +inline void _pio_data(int port, uint8_t data) +{ + *(pio_port + port) = data; +} + +inline void _pio_control(int port, uint8_t cmd) +{ + *(pio_ctrl + port) = cmd; +} + +void pio_set_mode(int port, int mode, uint8_t io) +{ + // 0x0F is a control sequence to set mode + _pio_control(port, ((mode << 6) | 0x0F)); + + // this mode requires an additional argument that sets + // a mode for each pin + if (mode == PIO_MODE_BIT_IO) { + _pio_control(port, io); + } +} + +void pio_set_interrupts(int port, int control) +{ + // 0x07 is a control sequence to set interrupts + _pio_control(port, (control | 0x07)); +} + +void pio_set_interrupts_mask(int port, int control, uint8_t mask) +{ + // 0x17 is a control sequence to set interrupts + // and to interpret the next byte as a mask + _pio_control(port, (control | 0x17)); + _pio_control(port, mask); +} diff --git a/sw/z80_test/pio.h b/sw/z80_test/pio.h new file mode 100644 index 0000000..0df2ed0 --- /dev/null +++ b/sw/z80_test/pio.h @@ -0,0 +1,37 @@ +#ifndef __PIO_H__ +#define __PIO_H__ + +#include "devices.h" +#include "types.h" + +#define PIO_A 0 +#define PIO_B 1 + +#define PIO_MODE_BYTE_IN 0 +#define PIO_MODE_BYTE_OUT 1 +#define PIO_MODE_BYTE_BI 2 +#define PIO_MODE_BIT_IO 3 + +#define PIO_INT_ACTIVE_HIGH (1<<5) +#define PIO_INT_AND_MODE (1<<6) +#define PIO_INT_ENABLE (1<<7) + + +inline void _pio_data(int port, uint8_t data); +inline void _pio_control(int port, uint8_t cmd); + +void pio_set_mode(int port, int mode, uint8_t io); + +void pio_set_interrupts(int port, int control); +void pio_set_interrupts_mask(int port, int control, uint8_t mask); + +// uint8_t pio_read_data(int port); +uint8_t pio_read(int port); +void pio_write(int port, uint8_t data); + +inline int pio_read_pin(int port, uint8_t pin); +inline void pio_write_pin(int port, uint8_t pin); + +// TODO: implement mode (in/out/both) and interrupt vector + +#endif // __PIO_H__ diff --git a/sw/z80_test/types.h b/sw/z80_test/types.h new file mode 100644 index 0000000..815fc68 --- /dev/null +++ b/sw/z80_test/types.h @@ -0,0 +1,13 @@ +#ifndef __TYPES_H__ +#define __TYPES_H__ + +/* only types from primitive types are defined in this file */ + +typedef volatile unsigned char register_t; + +typedef unsigned int uint; +typedef char int8_t; +typedef unsigned char uint8_t; +typedef int int16_t; +typedef unsigned int uint16_t; +#endif diff --git a/sw/z80_test/usart.c b/sw/z80_test/usart.c new file mode 100644 index 0000000..9ec6dbd --- /dev/null +++ b/sw/z80_test/usart.c @@ -0,0 +1,91 @@ +#include "usart.h" + +static struct _usart_device *_usart = (struct _usart_device *) ADDR_DEV_USART; + +void usart_set_baudrate(uint16_t baudrate) +{ + // enable latch access + _usart->LCR.divisor_latch_access = 1; + _usart->buffer = 0x00FF & baudrate; // LSBs + memcpy(&_usart->IER, &(baudrate >>8), 1); + // _usart->IER = 0x00FF & (baudrate >> 8); // MSBs + _usart->LCR.divisor_latch_access = 0; +} + +void usart_set_parity(int mode) +{ + if (mode == USART_PARITY_EVEN) { + _usart->LCR.even_parity = 1; + } + else if (mode == USART_PARITY_ODD) { + _usart->LCR.even_parity = 0; + } + + _usart->LCR.parity = (mode == USART_PARITY_NONE) ? 0 : 1; +} + +void usart_set_stop_bits(int count) +{ + _usart->LCR.stop_bits = (count == USART_STOP_BITS_1) ? 0 : 1; +} + +void usart_word_length(int length) +{ + _usart->LCR.word_length = length; +} + +void usart_set_autoflow(int mode) +{ + _usart->MCR.autoflow = (mode == USART_AUTOFLOW_OFF) ? 0 : 1; + _usart->MCR.data_terminal_ready = (mode == USART_AUTOFLOW_ALL); +} + +inline void usart_init(uint16_t baudrate, int parity, int stop_bits) +{ + usart_set_baudrate(baudrate); + usart_set_parity(parity); + usart_set_stop_bits(stop_bits); + usart_set_autoflow(USART_AUTOFLOW_OFF); +} + +void usart_transmit(uint8_t data) +{ + _usart->buffer = data; + while (_usart->LSR.transmitter_holder_empty == 0); // wait +} + +uint8_t usart_receive() +{ + return _usart->buffer; +} + +int usart_write(uint8_t *data, size_t size) +{ + uint8_t *dp = data; + + while (size--) { + _usart->buffer = *(dp++); + while (_usart->LSR.transmitter_empty); + } + + // TODO: do something that actually counts for sent bytes + return size; +} + +int usart_read(uint8_t *buffer, size_t count) +{ + uint8_t *bp = buffer; + size_t read_count = 0; + + while (count--) { + *(bp++) = _usart->buffer; + // check for errors + if (_usart->LSR.framing_error || _usart->LSR.parity_error) { + bp--; // delete last byte (?) + } else { + read_count++; + } + } + + return read_count; +} diff --git a/sw/z80_test/usart.h b/sw/z80_test/usart.h new file mode 100644 index 0000000..b85ee3e --- /dev/null +++ b/sw/z80_test/usart.h @@ -0,0 +1,155 @@ +#ifndef __USART_H__ +#define __USART_H__ + +#include "types.h" +#include "devices.h" + +#include "string.h" + +// baudrate clock divisors +// values from TL16C550C datasheet (table 9 for 1.8432 MHz crystal) +#define USART_BAUDRATE_50 2304 +#define USART_BAUDRATE_75 1536 +#define USART_BAUDRATE_110 1047 +#define USART_BAUDRATE_134_5 857 +#define USART_BAUDRATE_150 768 +#define USART_BAUDRATE_300 384 +#define USART_BAUDRATE_600 192 +#define USART_BAUDRATE_1200 96 +#define USART_BAUDRATE_1800 64 +#define USART_BAUDRATE_2000 58 +#define USART_BAUDRATE_2400 48 +#define USART_BAUDRATE_3600 32 +#define USART_BAUDRATE_4800 24 +#define USART_BAUDRATE_7200 16 +#define USART_BAUDRATE_9600 12 +#define USART_BAUDRATE_19200 6 +#define USART_BAUDRATE_38400 3 +#define USART_BAUDRATE_56000 3 + +// parity +#define USART_PARITY_NONE 0 +#define USART_PARITY_EVEN 1 +#define USART_PARITY_ODD 2 + +// stop bits +#define USART_STOP_BITS_1 10 +#define USART_STOP_BITS_15 15 +#define USART_STOP_BITS_2 20 + +// word lenght +#define USART_WORD_LENGTH_5 0 +#define USART_WORD_LENGTH_6 1 +#define USART_WORD_LENGTH_7 2 +#define USART_WORD_LENGTH_8 3 + +// autoflow +#define USART_AUTOFLOW_ALL 3 +#define USART_AUTOFLOW_CTS 2 +#define USART_AUTOFLOW_OFF 0 + +/* stuctures for usart registers */ +struct IER +{ + volatile uint received_data_interrupt :1; + volatile uint transmitter_empty_interrupt :1; + volatile uint receiver_line_status_interrupt :1; + volatile uint modem_status_interrupt :1; + volatile uint reserved :4; +}; + +struct IIR +{ + volatile uint interrupt_pending :1; + volatile uint interrupt_id :3; + volatile uint reserved :2; + volatile uint fifos :2; +}; + +struct FCR +{ + volatile uint fifo_enable :1; + volatile uint receiver_fifo_rst :1; + volatile uint trasmitter_fifo_rst :1; + volatile uint dma_mode_select :1; + volatile uint reserved :1; + volatile uint receiver_trigger :2; +}; + +struct LCR +{ + volatile uint word_length :2; + volatile uint stop_bits :1; + volatile uint parity :1; + volatile uint even_parity :1; + volatile uint stick_parity :1; + volatile uint break_control :1; + volatile uint divisor_latch_access :1; +}; + +struct MCR +{ + volatile uint data_terminal_ready :1; + volatile uint request_to_send :1; + volatile uint out1; + volatile uint out2; + volatile uint loop; + volatile uint autoflow :1; + volatile uint reserved :2; +}; + +struct LSR +{ + volatile uint data_ready :1; + volatile uint overrun_error :1; + volatile uint parity_error :1; + volatile uint framing_error :1; + volatile uint break_interrupt :1; + volatile uint transmitter_holder_empty :1; + volatile uint transmitter_empty :1; + volatile uint fifo_recv_error :1; +}; + +struct MSR +{ + volatile uint delta_cts :1; + volatile uint delta_data_set_ready :1; + volatile uint trailing_edge_ring_indicator :1; + volatile uint delta_data_carrier_detect :1; + volatile uint clear_to_send :1; + volatile uint data_set_ready :1; + volatile uint ring_indicator :1; + volatile uint data_carrier_detect :1; +}; + +/* this structure is only for internal usage */ +struct _usart_device +{ + register_t buffer; // also used as LSB for divisor latch + struct IER IER; + struct IIR IIR; + struct FCR FCR; + struct LCR LCR; + struct MCR MCR; + struct LSR LSR; + struct MSR MSR; + register_t scratch; +}; + + +// setup functions (wrappers) +void usart_set_baudrate(uint16_t baudrate); +void usart_set_parity(int mode); +void usart_set_stop_bits(int count); +void usart_set_word_length(int length); +void usart_set_autoflow(int mode); + +inline void usart_init(uint16_t baudrate, int parity, int stop_bits); + +void usart_transmit(uint8_t data); +uint8_t usart_receive(); + +int usart_write(uint8_t *data, size_t size); +int usart_read(uint8_t *buffer, size_t count); + +#endif // __USART__H__ |