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https://github.com/nippur72/apple1-videocard-lib.git
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remove VIC20 target
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10ce1dfd31
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@ -247,7 +247,6 @@ of the KickC compiler:
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- `apple1`
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- `apple1_jukebox`
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- `vic20`
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#### Target "apple1"
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@ -287,10 +286,3 @@ $0000-$00FF zero page: holds some C program variables
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$0280-$0FFF RAM: C program "Data" segment
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$4000-$7581 ROM: C program "Code" segment
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$7582-$7FFF ROM: C program "Data" segment (startup values)
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#### Target "vic20"
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This target has been used during the development of the library
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where a custom made VIC-20 emulator was interfaced with
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an emulated TMS9918, thus allowing running tests when
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the real Apple-1 machine was not available.
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@ -1,8 +0,0 @@
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// Commodore VIC 20 8k executable PRG file
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.file [name="%O", type="prg", segments="Program"]
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.segmentdef Program [segments="Basic, Code, Data"]
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.segmentdef Basic [start=$1201]
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.segmentdef Code [start=%P]
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.segmentdef Data [startAfter="Code"]
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.segment Basic
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:BasicUpstart(%E)
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@ -1,14 +0,0 @@
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{
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"description": "Commodore VIC 20 8K executable PRG file",
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"extension": "prg",
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"link": "vic20_8k.ld",
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"start_address": "0x120d",
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"cpu": "MOS6502X",
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"interrupt": "rom_min_vic20",
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"emulator": "echo",
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"defines": {
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"__VIC20__": 1,
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"VIC20": 1,
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"__KICKC__": 1
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}
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}
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105
lib/apple1.h
105
lib/apple1.h
@ -14,36 +14,23 @@
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#pragma zp_reserve(0x2B) // MODE $00=XAM, $7F=STOR, $AE=BLOCK XAM
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#endif
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#ifdef APPLE1
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// APPLE1
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const word WOZMON = 0xFF1F; // enters monitor
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const word ECHO = 0xFFEF; // output ascii character in A (A not destroyed)
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const word PRBYTE = 0xFFDC; // print hex byte in A (A destroyed)
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const word KEY_DATA = 0xd010; // read key
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const word KEY_CTRL = 0xd011; // control port
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const word TERM_DATA = 0xd012; // write ascii
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const word TERM_CTRL = 0xd013; // control port
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const word INBUFFER = 0x0200; // woz monitor input buffer
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const word INBUFSIZE = 0x80; // woz monitor input buffer size
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#else
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// VIC20
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const word ECHO = 0xFFD2; // chrout routine in kernal rom
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const word GETIN = 0xFFE4; // GETIN keyboard read routine
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#endif
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// APPLE1
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const word WOZMON = 0xFF1F; // enters monitor
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const word ECHO = 0xFFEF; // output ascii character in A (A not destroyed)
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const word PRBYTE = 0xFFDC; // print hex byte in A (A destroyed)
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const word KEY_DATA = 0xd010; // read key
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const word KEY_CTRL = 0xd011; // control port
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const word TERM_DATA = 0xd012; // write ascii
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const word TERM_CTRL = 0xd013; // control port
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const word INBUFFER = 0x0200; // woz monitor input buffer
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const word INBUFSIZE = 0x80; // woz monitor input buffer size
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// prints a hex byte using the WOZMON routine
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void woz_print_hex(byte c) {
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#ifdef APPLE1
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asm {
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lda c
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jsr PRBYTE
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};
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#else
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asm {
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lda c
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jsr ECHO
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};
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#endif
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asm {
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lda c
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jsr PRBYTE
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};
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}
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// print hex word
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@ -68,65 +55,32 @@ void woz_puts(byte *s) {
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// returns to WOZMON prompt
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void woz_mon() {
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#ifdef APPLE1
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asm {
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jmp WOZMON
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}
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#endif
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asm {
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jmp WOZMON
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}
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}
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// returns nonzero if a key has been pressed
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inline byte apple1_iskeypressed() {
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#ifdef APPLE1
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return PEEK(KEY_CTRL) & 0x80;
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#else
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return 0;
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#endif
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inline byte apple1_iskeypressed() {
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return PEEK(KEY_CTRL) & 0x80;
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}
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// blocking keyboard read
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// reads a key from the apple-1 keyboard
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byte apple1_getkey() {
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#ifdef APPLE1
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asm {
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__wait:
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lda KEY_CTRL
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bpl __wait
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}
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return PEEK(KEY_DATA) & 0x7f;
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#else
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byte key;
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byte const *keyptr = &key;
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kickasm(uses keyptr, uses GETIN) {{
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__wait:
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jsr GETIN
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cmp #0
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beq __wait
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sta keyptr
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}}
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return key;
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#endif
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asm {
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__wait:
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lda KEY_CTRL
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bpl __wait
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}
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return PEEK(KEY_DATA) & 0x7f;
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}
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// non blocking keyboard read
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// reads a key and return 0 if no key is pressed
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byte apple1_readkey() {
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#ifdef APPLE1
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if((PEEK(KEY_CTRL) & 0x80)==0) return 0;
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else return PEEK(KEY_DATA) & 0x7f;
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#else
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byte key;
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byte const *keyptr = &key;
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kickasm(uses keyptr, uses GETIN) {{
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jsr GETIN
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cmp #0
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bne __keypress
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lda #0
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__keypress:
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sta keyptr
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}}
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return key;
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#endif
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if((PEEK(KEY_CTRL) & 0x80)==0) return 0;
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else return PEEK(KEY_DATA) & 0x7f;
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}
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void apple1_input_line(byte *buffer, byte max) {
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@ -162,8 +116,6 @@ void apple1_input_line(byte *buffer, byte max) {
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buffer[x]=0;
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}
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#ifdef APPLE1
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#include <stdlib.h> // for memcpy
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#define LOWRAM_START 0x280
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@ -175,6 +127,5 @@ inline void apple1_eprom_init() {
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// copy the initializaton data from ROM to lowram where "Data" segment is allocated
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memcpy((byte *)LOWRAM_START, (byte *)DATAINCODE, LOWRAM_SIZE);
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}
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#endif
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#endif
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#endif
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@ -67,11 +67,7 @@ void screen1_prepare() {
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}
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}
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#ifdef VIC20
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#define CHR_BACKSPACE 20
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#else
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#define CHR_BACKSPACE 8
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#endif
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#define CHR_HOME 11
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#define CHR_CLS 12
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@ -3,10 +3,6 @@
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@SET TARGET=%1
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@SET TMS9918=..\..
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@echo ======================== VIC20 ===================================================
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call kickc -includedir %TMS9918%\lib -targetdir %TMS9918%\kickc\ -t vic20_8k %TARGET%.c -o out\%TARGET%_vic20.prg -e
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copy out\%TARGET%.prg out\%TARGET%_vic20.prg
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@echo ======================== APPLE 1 JUKEBOX =================================================
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call kickc -includedir %TMS9918%\lib -targetdir %TMS9918%\kickc\ -t apple1_jukebox %TARGET%.c -o out\%TARGET%.prg -e
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call node %TMS9918%\tools\mkeprom out out\%TARGET%_jukebox.bin
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@ -5,10 +5,6 @@ TMS9918=../..
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mkdir -p out
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echo ======================== VIC20 ===================================================
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kickc.sh -includedir ${TMS9918}/lib -targetdir ${TMS9918}/kickc/ -t vic20_8k ${TARGET}.c -o out/${TARGET}_vic20.prg -e
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cp out/${TARGET}.prg out/${TARGET}_vic20.prg
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echo ======================== APPLE 1 JUKEBOX =================================================
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kickc.sh -includedir ${TMS9918}/lib -targetdir ${TMS9918}/kickc/ -t apple1_jukebox ${TARGET}.c -o out/${TARGET}.prg -e
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node ${TMS9918}/tools/mkeprom out out/${TARGET}_jukebox.bin
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