Apple-1-Tools/Ryukojiro-apple1
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Added freezing from CEZ, casting of write callbacks, some limited backspace support

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git-svn-id: svn+ssh://svn.phoenixbox.net/svn/apple1/trunk@18 64f78de7-aa59-e511-a0e8-0002a5492df0
This commit is contained in:
Daniel Loffgren 2015-09-14 08:19:08 +00:00
parent 748ea68368
commit 33c59e08f4
1 changed files with 35 additions and 4 deletions
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39
apple1/pia.c
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@ -17,10 +17,26 @@
#define KEYBOARD_NOTREADY 0x00
#define ANSI_BGCOLOR_GREEN "\x1b[42;1m"
void saveFreeze(v6502_memory *mem, const char *fname) {
FILE *f = fopen(fname, "w");
if (!f) {
endwin();
fprintf(stderr, "Couldn't open %s for writing\n", fname);
}
for (uint16_t offset = 0; offset < v6502_memoryStartCeiling; offset++) {
uint8_t byte = v6502_read(mem, offset, NO);
fwrite(&byte, sizeof(uint8_t), 1, f);
}
fclose(f);
}
char asciiCharFromA1Char(uint8_t c) {
switch (c) {
case 0xDC: return '\\';
case 0x8D: return '\n';
case 0xDF: return 0x7F; // Backspace
}
if (c >= 'a' && c <= 'z') {
@ -34,16 +50,26 @@ uint8_t a1CharFromAsciiChar(char c) {
switch (c) {
case '\\': return 0xDC;
case '\r': return 0x8D;
case 0x7F: return 0xDF; // Backspace
}
return (char)c;
}
void videoWriteCharCallback(struct _v6502_memory *memory, uint16_t offset, uint8_t value, void *context) {
void videoWriteCharCallback(struct _v6502_memory *memory, uint16_t offset, uint8_t value, a1pia *context) {
if (value) {
char c = asciiCharFromA1Char(value);
if (c == '\n') {
fprintf(stdout, "\n\r");
}
if (c == 0x7f) {
int y, x;
getyx(context->screen, y, x);
if (x < 0) {
move(y, x-1);
}
delch();
refresh();
}
else {
fprintf(stdout, ANSI_COLOR_BRIGHT_GREEN "%c" ANSI_COLOR_RESET, c);
}
@ -52,16 +78,21 @@ void videoWriteCharCallback(struct _v6502_memory *memory, uint16_t offset, uint8
}
}
void videoWriteNewlineCallback(struct _v6502_memory *memory, uint16_t offset, uint8_t value, void *context) {
void videoWriteNewlineCallback(struct _v6502_memory *memory, uint16_t offset, uint8_t value, a1pia *context) {
fprintf(stdout, "\r\n");
fflush(stdout);
}
uint8_t keyboardReadReadyCallback(struct _v6502_memory *memory, uint16_t offset, int trap, a1pia *context) {
if (!trap) {
return 0xbf;
}
if (context->buf) {
return KEYBOARD_READY;
}
saveFreeze(memory, "freeze.ram");
int c = getch();
if (c != ERR) {
@ -105,8 +136,8 @@ a1pia *pia_create(v6502_memory *mem) {
v6502_map(mem, A1PIA_KEYBOARD_INPUT, 1, (v6502_readFunction *)keyboardReadCharacterCallback, NULL, pia);
v6502_map(mem, A1PIA_KEYBOARD_CRLF_REG, 1, (v6502_readFunction *)keyboardReadReadyCallback, NULL, pia);
v6502_map(mem, A1PIA_VIDEO_OUTPUT, 1, FIXME_I_SHOULDNT_BE_NULL, videoWriteCharCallback, pia);
v6502_map(mem, A1PIA_VIDEO_CRLF_REG, 1, FIXME_I_SHOULDNT_BE_NULL, videoWriteNewlineCallback, pia);
v6502_map(mem, A1PIA_VIDEO_OUTPUT, 1, FIXME_I_SHOULDNT_BE_NULL, (v6502_writeFunction *)videoWriteCharCallback, pia);
v6502_map(mem, A1PIA_VIDEO_CRLF_REG, 1, FIXME_I_SHOULDNT_BE_NULL, (v6502_writeFunction *)videoWriteNewlineCallback, pia);
_doCoolVideoStart(pia);
return pia;