2 files changed, 157 insertions, 0 deletions
diff --git a/sw/z80_test/crt0.s b/sw/z80_test/crt0.s
new file mode 100644
index 0000000..00c7da1
--- /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	_kmain
+
+	.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	_kmain
+	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/makefile b/sw/z80_test/makefile
new file mode 100644
index 0000000..c709d61
--- /dev/null
+++ b/sw/z80_test/makefile
@@ -0,0 +1,54 @@
+####
+# source code settings
+#
+OSNAME := helvetiOS_test
+ 
+CSOURCES 	:=  $(wildcard kernel/*.c) \
+				$(wildcard kernel/drivers/*.c) \
+				$(wildcard libc/*.c) 
+
+OBJECTS 	:= $(patsubst %.c,build/%.rel,$(CSOURCES))
+HEXFILE		:= build/$(OSNAME).hex
+BINARY  	:= build/$(OSNAME).bin
+
+### 
+# compiler settings
+
+CC 		:= sdcc
+
+CFLAGS	:= -mz80 \
+			-I kernel/include \
+			-I kernel/include/drivers \
+			-I libc/include \
+			-DDEBUG
+
+LDFLAGS := -mz80 --no-std-crt0 crt0.rel \
+			--std-c89 -pedantic \
+			--code-loc 0x0800 --data-loc 0x8000
+
+.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) $(BINARY)
+
+$(OBJECTS): build/%.rel : %.c $(CSOURCES) dirs crt0.rel
+	@printf "\n"
+	$(CC) $(CFLAGS) -c $< -o $@
+
+crt0.rel: crt0.s
+	sdasz80 -o $<
+
+dirs:
+	mkdir -p build build/kernel build/libc
+
+dis: $(BINARY)
+	@# z80dasm -a -l -g 0h $< -o build/$(OSNAME).s
+	dz80 -b -n $<
+
+clean:
+	- rm -rd build/*
+	- rm crt0.rel