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Memory mappings can now specify to ignore some address bits, fixes some Cirrus Logic drivers for Windows 3.1x freezing.

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This commit is contained in:
OBattler
2024-12-18 01:19:50 +01:00
parent 11b588c6bb
commit 80a0c48785
3 changed files with 51 additions and 26 deletions
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3
src/video/vid_cl54xx.c
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@@ -4306,6 +4306,9 @@ gd54xx_init(const device_t *info)
mem_mapping_disable(&gd54xx->bios_rom.mapping);
}
if ((svga->crtc[0x27] <= CIRRUS_ID_CLGD5429) || (!gd54xx->pci && !gd54xx->vlb))
mem_mapping_set_base_ignore(&gd54xx->linear_mapping, 0xff000000);
mem_mapping_set_p(&svga->mapping, gd54xx);
mem_mapping_disable(&gd54xx->mmio_mapping);
mem_mapping_disable(&gd54xx->linear_mapping);