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AltairZ80: Adds "ROM" option to "load -h"

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Adds the ability to mark pages as ROM when loading Intel HEX
files.
This commit is contained in:
Patrick Linstruth
2024-09-02 21:17:52 -04:00
parent 5421c9c22e
commit 2adbe8c4fa
1 changed files with 15 additions and 2 deletions
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17
AltairZ80/altairz80_cpu.c
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@@ -7511,10 +7511,17 @@ t_stat sim_load(FILE *fileref, CONST char *cptr, CONST char *fnam, int flag) {
https://deramp.com/downloads/misc_software/hex-binary utilities for the PC/ https://deramp.com/downloads/misc_software/hex-binary utilities for the PC/
*/ */
static t_stat cpu_hex_load(FILE *fileref, CONST char *cptr, CONST char *fnam, int flag) { static t_stat cpu_hex_load(FILE *fileref, CONST char *cptr, CONST char *fnam, int flag) {
char gbuf[CBUFSIZE];
char linebuf[1024], datastr[1024], *bufptr; char linebuf[1024], datastr[1024], *bufptr;
int32 bytecnt, rectype, databyte, chksum, line = 0, cnt = 0; int32 bytecnt, rectype, databyte, chksum, line = 0, cnt = 0;
uint32 makeROM = FALSE;
t_addr addr, org = 0; t_addr addr, org = 0;
get_glyph(cptr, gbuf, 0);
if (strcmp(gbuf, "ROM") == 0) {
makeROM = TRUE;
}
while (!feof(fileref)) { while (!feof(fileref)) {
if (fgets(linebuf, sizeof(linebuf), fileref) == NULL) if (fgets(linebuf, sizeof(linebuf), fileref) == NULL)
break; break;
@@ -7552,7 +7559,13 @@ static t_stat cpu_hex_load(FILE *fileref, CONST char *cptr, CONST char *fnam, in
} }
bufptr += 2; bufptr += 2;
PutBYTE(addr++, databyte); if (makeROM) {
mmu_table[addr >> LOG2PAGESIZE] = ROM_PAGE;
} else {
mmu_table[addr >> LOG2PAGESIZE] = RAM_PAGE;
}
M[addr++] = databyte;
chksum += databyte; chksum += databyte;
cnt++; cnt++;
@@ -7568,7 +7581,7 @@ static t_stat cpu_hex_load(FILE *fileref, CONST char *cptr, CONST char *fnam, in
} }
} }
return sim_messagef(SCPE_OK, "%d byte%s loaded at %x.\n", PLURAL(cnt), org); return sim_messagef(SCPE_OK, "%d byte%s loaded at %x%s.\n", PLURAL(cnt), org, (makeROM) ? " [ROM]" : "");
} }
void cpu_raise_interrupt(uint32 irq) { void cpu_raise_interrupt(uint32 irq) {