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Add OVL handling to write-through cache RAM

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This commit is contained in:
beeanyew
2021-06-22 14:00:36 +02:00
parent ce1c064e71
commit f7034d052a
1 changed files with 9 additions and 1 deletions
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10
memory_mapped.c
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@@ -25,7 +25,7 @@ inline int handle_mapped_read(struct emulator_config *cfg, unsigned int addr, un
for (int i = 0; i < MAX_NUM_MAPPED_ITEMS; i++) {
if (cfg->map_type[i] == MAPTYPE_NONE)
continue;
else if (ovl && cfg->map_type[i] == MAPTYPE_ROM) {
else if (ovl && (cfg->map_type[i] == MAPTYPE_ROM || cfg->map_type[i] == MAPTYPE_RAM_WTC)) {
if (cfg->map_mirror[i] != ((unsigned int)-1) && CHKRANGE(addr, cfg->map_mirror[i], cfg->map_size[i])) {
read_addr = cfg->map_data[i] + ((addr - cfg->map_mirror[i]) % cfg->rom_size[i]);
goto read_value;
@@ -87,6 +87,13 @@ inline int handle_mapped_write(struct emulator_config *cfg, unsigned int addr, u
for (int i = 0; i < MAX_NUM_MAPPED_ITEMS; i++) {
if (cfg->map_type[i] == MAPTYPE_NONE)
continue;
else if (ovl && cfg->map_type[i] == MAPTYPE_RAM_WTC) {
if (cfg->map_mirror[i] != ((unsigned int)-1) && CHKRANGE(addr, cfg->map_mirror[i], cfg->map_size[i])) {
write_addr = cfg->map_data[i] + ((addr - cfg->map_mirror[i]) % cfg->rom_size[i]);
res = -1;
goto write_value;
}
}
else if (CHKRANGE_ABS(addr, cfg->map_offset[i], cfg->map_high[i])) {
switch(cfg->map_type[i]) {
case MAPTYPE_ROM:
@@ -99,6 +106,7 @@ inline int handle_mapped_write(struct emulator_config *cfg, unsigned int addr, u
goto write_value;
break;
case MAPTYPE_RAM_WTC:
//printf("Some write to WTC RAM.\n");
write_addr = cfg->map_data[i] + (addr - cfg->map_offset[i]);
res = -1;
goto write_value;