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Headland: Correctly set memory state when enabling/disabling 384K remap and add 384K remap handling for 640-1024K memory configs, fixes 384K remap on Tandy 1000 RSX

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win2kgamer
2026-02-09 20:15:06 -06:00
parent 4bf2bc7bce
commit 3a1845398b
1 changed files with 6 additions and 2 deletions
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8
src/chipset/headland.c
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@@ -284,9 +284,11 @@ memmap_state_update(headland_t *dev)
mem_mapping_set_exec(&dev->mid_mapping, ram + 0xA0000);
mem_mapping_disable(&dev->mid_mapping);
if (mem_size > 1024) {
mem_set_mem_state((mem_size << 10), 0x60000, MEM_READ_INTERNAL | MEM_WRITE_INTERNAL);
mem_set_mem_state((mem_size << 10), 0x60000, MEM_READ_EXTANY | MEM_WRITE_EXTANY);
mem_mapping_set_addr(&dev->high_mapping, 0x100000, (mem_size - 1024) << 10);
mem_mapping_set_exec(&dev->high_mapping, ram + 0x100000);
} else if ((mem_size > 640) && (mem_size <=1024)) {
mem_set_mem_state(0x100000, (mem_size - 640) << 10, MEM_READ_EXTANY | MEM_WRITE_EXTANY);
}
} else {
/* 1 MB - 1 MB + 384k: RAM pointing to A0000-FFFFF
@@ -296,9 +298,11 @@ memmap_state_update(headland_t *dev)
mem_mapping_set_exec(&dev->mid_mapping, ram + 0xA0000);
if (mem_size > 1024) {
/* We have ram above 1 MB, we need to relocate that. */
mem_set_mem_state((mem_size << 10), 0x60000, MEM_READ_EXTANY | MEM_WRITE_EXTANY);
mem_set_mem_state((mem_size << 10), 0x60000, MEM_READ_INTERNAL | MEM_WRITE_INTERNAL);
mem_mapping_set_addr(&dev->high_mapping, 0x160000, (mem_size - 1024) << 10);
mem_mapping_set_exec(&dev->high_mapping, ram + 0x100000);
} else if ((mem_size > 640) && (mem_size <=1024)) {
mem_set_mem_state(0x100000, (mem_size - 640) << 10, MEM_READ_INTERNAL | MEM_WRITE_INTERNAL);
}
}
}