Fix for PIO driver and its test and deletes build files

11 files changed, 67 insertions, 703 deletions

diff --git a/sw/z80/tests/pio/build/crt0.rel b/sw/z80/tests/pio/build/crt0.rel
deleted file mode 100644
index 809c0e6..0000000
--- a/sw/z80/tests/pio/build/crt0.rel
+++ /dev/null
@@ -1,86 +0,0 @@
-XL2
-H 14 areas 5 global symbols
-M crt0
-S _main Ref0000
-S .__.ABS. Def0000
-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 00 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/tests/pio/build/main.asm b/sw/z80/tests/pio/build/main.asm
deleted file mode 100644
index 453eead..0000000
--- a/sw/z80/tests/pio/build/main.asm
+++ /dev/null
@@ -1,80 +0,0 @@
-;--------------------------------------------------------
-; File Created by SDCC : free open source ANSI-C Compiler
-; Version 3.6.0 #9615 (Linux)
-;--------------------------------------------------------
-	.module main
-	.optsdcc -mz80
-	
-;--------------------------------------------------------
-; Public variables in this module
-;--------------------------------------------------------
-	.globl _main
-	.globl _pio_write
-	.globl _pio_set_mode
-;--------------------------------------------------------
-; 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
-;main.c:3: void main(void)
-;	---------------------------------
-; Function main
-; ---------------------------------
-_main::
-;main.c:7: pio_set_mode(PIO_A, PIO_MODE_BYTE_OUT, 0);
-	xor	a, a
-	push	af
-	inc	sp
-	ld	hl,#0x0001
-	push	hl
-	ld	l, #0x00
-	push	hl
-	call	_pio_set_mode
-	pop	af
-	pop	af
-	inc	sp
-;main.c:9: while (1) {
-	ld	c,#0x00
-00102$:
-;main.c:10: pio_write(PIO_A, j++);
-	ld	b,c
-	inc	c
-	push	bc
-	push	bc
-	inc	sp
-	ld	hl,#0x0000
-	push	hl
-	call	_pio_write
-	pop	af
-	inc	sp
-	pop	bc
-	jr	00102$
-	.area _CODE
-	.area _INITIALIZER
-	.area _CABS (ABS)
diff --git a/sw/z80/tests/pio/build/main.lst b/sw/z80/tests/pio/build/main.lst
deleted file mode 100644
index 4a1a872..0000000
--- a/sw/z80/tests/pio/build/main.lst
+++ /dev/null
@@ -1,80 +0,0 @@
-                              1 ;--------------------------------------------------------
-                              2 ; File Created by SDCC : free open source ANSI-C Compiler
-                              3 ; Version 3.6.0 #9615 (Linux)
-                              4 ;--------------------------------------------------------
-                              5 	.module main
-                              6 	.optsdcc -mz80
-                              7 	
-                              8 ;--------------------------------------------------------
-                              9 ; Public variables in this module
-                             10 ;--------------------------------------------------------
-                             11 	.globl _main
-                             12 	.globl _pio_write
-                             13 	.globl _pio_set_mode
-                             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 ;main.c:3: void main(void)
-                             46 ;	---------------------------------
-                             47 ; Function main
-                             48 ; ---------------------------------
-   0000                      49 _main::
-                             50 ;main.c:7: pio_set_mode(PIO_A, PIO_MODE_BYTE_OUT, 0);
-   0000 AF            [ 4]   51 	xor	a, a
-   0001 F5            [11]   52 	push	af
-   0002 33            [ 6]   53 	inc	sp
-   0003 21 01 00      [10]   54 	ld	hl,#0x0001
-   0006 E5            [11]   55 	push	hl
-   0007 2E 00         [ 7]   56 	ld	l, #0x00
-   0009 E5            [11]   57 	push	hl
-   000A CDr00r00      [17]   58 	call	_pio_set_mode
-   000D F1            [10]   59 	pop	af
-   000E F1            [10]   60 	pop	af
-   000F 33            [ 6]   61 	inc	sp
-                             62 ;main.c:9: while (1) {
-   0010 0E 00         [ 7]   63 	ld	c,#0x00
-   0012                      64 00102$:
-                             65 ;main.c:10: pio_write(PIO_A, j++);
-   0012 41            [ 4]   66 	ld	b,c
-   0013 0C            [ 4]   67 	inc	c
-   0014 C5            [11]   68 	push	bc
-   0015 C5            [11]   69 	push	bc
-   0016 33            [ 6]   70 	inc	sp
-   0017 21 00 00      [10]   71 	ld	hl,#0x0000
-   001A E5            [11]   72 	push	hl
-   001B CDr00r00      [17]   73 	call	_pio_write
-   001E F1            [10]   74 	pop	af
-   001F 33            [ 6]   75 	inc	sp
-   0020 C1            [10]   76 	pop	bc
-   0021 18 EF         [12]   77 	jr	00102$
-                             78 	.area _CODE
-                             79 	.area _INITIALIZER
-                             80 	.area _CABS (ABS)
diff --git a/sw/z80/tests/pio/build/main.rel b/sw/z80/tests/pio/build/main.rel
deleted file mode 100644
index bc2bd98..0000000
--- a/sw/z80/tests/pio/build/main.rel
+++ /dev/null
@@ -1,29 +0,0 @@
-XL2
-H 9 areas 4 global symbols
-M main
-O -mz80
-S _pio_set_mode Ref0000
-S .__.ABS. Def0000
-S _pio_write Ref0000
-A _CODE size 23 flags 0 addr 0
-S _main 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 AF F5 33 21 01 00 E5 2E 00 E5 CD 00 00 F1
-R 00 00 00 00 02 0D 00 00
-T 0E 00 F1 33 0E 00
-R 00 00 00 00
-T 12 00
-R 00 00 00 00
-T 12 00 41 0C C5 C5 33 21 00 00 E5 CD 00 00 F1 33
-R 00 00 00 00 02 0C 02 00
-T 20 00 C1 18 EF
-R 00 00 00 00
diff --git a/sw/z80/tests/pio/build/main.sym b/sw/z80/tests/pio/build/main.sym
deleted file mode 100644
index 08d28a3..0000000
--- a/sw/z80/tests/pio/build/main.sym
+++ /dev/null
@@ -1,29 +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 _main                                                          0000 GR
-    _pio_set_mode                                                  **** GX
-    _pio_write                                                     **** GX
-
-
-ASxxxx Assembler V02.00 + NoICE + SDCC mods  (Zilog Z80 / Hitachi HD64180), page 2.
-Hexadecimal [16-Bits]
-
-Area Table
-
-   0 _CODE                                      size   23   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/tests/pio/build/pio_test.lk b/sw/z80/tests/pio/build/pio_test.lk
deleted file mode 100644
index 20c32cc..0000000
--- a/sw/z80/tests/pio/build/pio_test.lk
+++ /dev/null
@@ -1,13 +0,0 @@
--mjwx
--i build/pio_test.hex
--b _CODE = 0x0800
--b _DATA = 0x2000
--k ../../drivers/build/
--k /usr/libexec/../share/sdcc/lib/z80
--k /usr/share/sdcc/lib/z80
--l drivers.a
--l z80
-build/crt0.rel
-build/main.rel
-
--e
diff --git a/sw/z80/tests/pio/build/pio_test.map b/sw/z80/tests/pio/build/pio_test.map
deleted file mode 100644
index e91ef69..0000000
--- a/sw/z80/tests/pio/build/pio_test.map
+++ /dev/null
@@ -1,213 +0,0 @@
-ASxxxx Linker V03.00 + NoICE + sdld,  page 1.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-.  .ABS.                            00000000    00000000 =           0. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-     00000000  .__.ABS.                           pio
-     00000000  l__BSEG                         
-     00000000  l__BSS                          
-     00000000  l__CABS                         
-     00000000  l__DABS                         
-     00000000  l__DATA                         
-     00000000  l__HEADER                       
-     00000000  l__HEAP                         
-     00000000  l__HOME                         
-     00000000  s__CABS                         
-     00000000  s__DABS                         
-     00000000  s__HEADER                       
-     00000000  s__HEADER0                      
-     00000000  s__HEADER1                      
-     00000000  s__HEADER2                      
-     00000000  s__HEADER3                      
-     00000000  s__HEADER4                      
-     00000000  s__HEADER5                      
-     00000000  s__HEADER6                      
-     00000000  s__HEADER7                      
-     00000000  s__HEADER8                      
-     00000001  l__GSFINAL                      
-     00000002  l__HEADER1                      
-     00000002  l__HEADER2                      
-     00000002  l__HEADER3                      
-     00000002  l__HEADER4                      
-     00000002  l__HEADER5                      
-     00000002  l__HEADER6                      
-     00000002  l__HEADER7                      
-     00000003  l__HEADER0                      
-     00000004  l__INITIALIZED                  
-     00000004  l__INITIALIZER                  
-     00000006  l__GSINIT                       
-     0000000C  l__HEADER8                      
-     000000FD  l__CODE                         
-     00000800  s__CODE                         
-     000008FD  s__HOME                         
-     000008FD  s__INITIALIZER                  
-     00000901  s__GSINIT                       
-     00000907  s__GSFINAL                      
-     00002000  s__DATA                         
-     00002000  s__INITIALIZED                  
-     00002004  s__BSEG                         
-     00002004  s__BSS                          
-     00002004  s__HEAP                         
-ASxxxx Linker V03.00 + NoICE + sdld,  page 2.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_CODE                               00000800    000000FD =         253. bytes (REL,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-     00000800  __clock                            crt0
-     00000804  _exit                              crt0
-     0000080A  _main                              main
-     0000082D  __pio_data                         pio
-     00000847  __pio_control                      pio
-     00000861  _pio_set_mode                      pio
-     0000089D  _pio_set_interrupts                pio
-     000008B0  _pio_set_interrupts_mask           pio
-     000008D7  _pio_read                          pio
-     000008ED  _pio_write                         pio
-
-ASxxxx Linker V03.00 + NoICE + sdld,  page 3.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER0                            00000000    00000003 =           3. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 4.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER1                            00000000    00000002 =           2. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 5.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER2                            00000000    00000002 =           2. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 6.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER3                            00000000    00000002 =           2. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 7.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER4                            00000000    00000002 =           2. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 8.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER5                            00000000    00000002 =           2. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 9.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER6                            00000000    00000002 =           2. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 10.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER7                            00000000    00000002 =           2. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 11.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER8                            00000000    0000000C =          12. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 12.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_INITIALIZER                        000008FD    00000004 =           4. bytes (REL,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 13.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_GSINIT                             00000901    00000006 =           6. bytes (REL,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-     00000901  gsinit                             crt0
-
-ASxxxx Linker V03.00 + NoICE + sdld,  page 14.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_GSFINAL                            00000907    00000001 =           1. bytes (REL,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 15.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_INITIALIZED                        00002000    00000004 =           4. bytes (REL,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 16.
-
-Files Linked                              [ module(s) ]
-
-build/crt0.rel                            [ crt0 ]
-build/main.rel                            [ main ]
-
-
-Libraries Linked                          [ object file ]
-
-../../drivers/build/drivers.a             [ pio.rel ]
-
-ASxxxx Linker V03.00 + NoICE + sdld,  page 17.
-
-User Base Address Definitions
-
-_CODE = 0x0800
-_DATA = 0x2000
-
-
\ No newline at end of file
diff --git a/sw/z80/tests/pio/build/pio_test.noi b/sw/z80/tests/pio/build/pio_test.noi
deleted file mode 100644
index 3ddefe7..0000000
--- a/sw/z80/tests/pio/build/pio_test.noi
+++ /dev/null
@@ -1,57 +0,0 @@
-DEF .__.ABS. 0x0
-DEF l__BSEG 0x0
-DEF l__BSS 0x0
-DEF l__CABS 0x0
-DEF l__DABS 0x0
-DEF l__DATA 0x0
-DEF l__HEADER 0x0
-DEF l__HEAP 0x0
-DEF l__HOME 0x0
-DEF s__CABS 0x0
-DEF s__DABS 0x0
-DEF s__HEADER 0x0
-DEF s__HEADER0 0x0
-DEF s__HEADER1 0x0
-DEF s__HEADER2 0x0
-DEF s__HEADER3 0x0
-DEF s__HEADER4 0x0
-DEF s__HEADER5 0x0
-DEF s__HEADER6 0x0
-DEF s__HEADER7 0x0
-DEF s__HEADER8 0x0
-DEF l__GSFINAL 0x1
-DEF l__HEADER1 0x2
-DEF l__HEADER2 0x2
-DEF l__HEADER3 0x2
-DEF l__HEADER4 0x2
-DEF l__HEADER5 0x2
-DEF l__HEADER6 0x2
-DEF l__HEADER7 0x2
-DEF l__HEADER0 0x3
-DEF l__INITIALIZED 0x4
-DEF l__INITIALIZER 0x4
-DEF l__GSINIT 0x6
-DEF l__HEADER8 0xC
-DEF l__CODE 0xFD
-DEF s__CODE 0x800
-DEF s__HOME 0x8FD
-DEF s__INITIALIZER 0x8FD
-DEF s__GSINIT 0x901
-DEF s__GSFINAL 0x907
-DEF s__DATA 0x2000
-DEF s__INITIALIZED 0x2000
-DEF s__BSEG 0x2004
-DEF s__BSS 0x2004
-DEF s__HEAP 0x2004
-DEF __clock 0x800
-DEF _exit 0x804
-DEF _main 0x80A
-DEF __pio_data 0x82D
-DEF __pio_control 0x847
-DEF _pio_set_mode 0x861
-DEF _pio_set_interrupts 0x89D
-DEF _pio_set_interrupts_mask 0x8B0
-DEF _pio_read 0x8D7
-DEF _pio_write 0x8ED
-DEF gsinit 0x901
-LOAD build/pio_test.ihx
diff --git a/sw/z80/tests/pio/crt0.s b/sw/z80/tests/pio/crt0.s
index c272f06..eabe06c 100644
--- a/sw/z80/tests/pio/crt0.s
+++ b/sw/z80/tests/pio/crt0.s
@@ -1,104 +1,40 @@
-;--------------------------------------------------------------------------
-;  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
+    .area   _HEADER (ABS)
 
-	.module crt0
-	.globl	_main
+;; Reset vectors
+    .org    0
+    jp  init
 
-	.area	_HEADER (ABS)
-	;; Reset vector
-	.org 	0
-	jp	init
+    .org    0x38 ; the instruction 0xff (not written) resets to this location
+    jp init
 
-	.org	0x08
-	reti
-	.org	0x10
-	reti
-	.org	0x18
-	reti
-	.org	0x20
-	reti
-	.org	0x28
-	reti
-	.org	0x30
-	reti
-	.org	0x38
-	reti
+;; main code
+    .org    0x100
+    .globl  _main
 
-	.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
-
+    ;; Set stack pointer directly above top of memory.
+    ld  sp,#0xffff
+
+    ;; Start of the program
+    call    _main
+    jp      _exit
+
+_exit:
+    halt
+    ; 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
\ No newline at end of file
diff --git a/sw/z80/tests/pio/main.c b/sw/z80/tests/pio/main.c
index 4b0bcdb..c1f3741 100644
--- a/sw/z80/tests/pio/main.c
+++ b/sw/z80/tests/pio/main.c
@@ -1,12 +1,17 @@
 #include "pio.h"
 
+#include <stdint.h>
+
 void main(void)
 {
-    uint8_t j = 0;
+    uint8_t i = 0;
 
     pio_set_mode(PIO_A, PIO_MODE_BYTE_OUT, 0);
 
     while (1) {
-        pio_write(PIO_A, j++);
+        pio_write(PIO_A, i);
+        i = ~i;
     }
+
+    // return;
 }
diff --git a/sw/z80/tests/pio/makefile b/sw/z80/tests/pio/makefile
index bd9d5bf..5c3716c 100644
--- a/sw/z80/tests/pio/makefile
+++ b/sw/z80/tests/pio/makefile
@@ -1,13 +1,13 @@
 ####
 # source code settings
 #
-NAME := pio_test
+OSNAME := pio_test
  
-CSOURCES 	:= $(wildcard *.c)
+CSOURCES 	:=  $(wildcard *.c)
 
 OBJECTS 	:= $(patsubst %.c,build/%.rel,$(CSOURCES))
-HEXFILE		:= build/$(NAME).hex
-BINARY  	:= build/$(NAME).bin
+HEXFILE		:= build/$(OSNAME).hex
+BINARY  	:= build/$(OSNAME).bin
 
 ### 
 # compiler settings
@@ -15,26 +15,31 @@ BINARY  	:= build/$(NAME).bin
 CC 		:= sdcc
 
 CFLAGS	:= -mz80 \
-			-pedantic \
+			--allow-unsafe-read \
 			-I . \
 			-I ../../arch \
 			-I ../../drivers/include \
 			-DDEBUG
 
 LDFLAGS := -mz80 \
-			-L ../../drivers/build/ \
-			-l drivers.a \
 			--no-std-crt0 build/crt0.rel \
-			--code-loc 0x0800 \
-			--data-loc 0x2000
+			-L ../../drivers/build \
+			-l drivers.a \
+			-pedantic 
 
-.PHONY: dirs dis clean
+			# --code-loc 0x0120 \
+			# --data-loc 0x2000
+
+.PHONY: flash dirs dis clean
 all: $(BINARY)
 
+flash: $(BINARY)
+	minipro -p M28C64 -w $< 
+
 # build binary
 $(BINARY): $(OBJECTS) dirs
 	$(CC) $(LDFLAGS) $(OBJECTS) -o $(HEXFILE)
-	makebin -s 8192 $(HEXFILE) $(BINARY)
+	makebin -s 8192 -yo 1 $(HEXFILE) $(BINARY)
 
 $(OBJECTS): build/%.rel : %.c $(CSOURCES) dirs build/crt0.rel
 	@printf "\n"
@@ -48,9 +53,14 @@ dirs:
 	mkdir -p build
 
 dis: $(BINARY)
-	@# z80dasm -a -l -g 0h $< -o build/$(OSNAME).s
-	dz80 -b -n $<
+	#dz80 -b -n $<
+	r2 -a z80 $< -A \
+	-c 'afr main 0x200; \
+		pd 0x10; \
+		s 0x100; \
+		pd 10; \
+		s 0x200; \
+		pd 0x40' \
 
 clean:
-	- rm -rd build/*
-	- rm crt0.rel
+	- rm -rd build