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Mach64 GX/VT2: apparently I was wrong about the reserved aperture bit values...

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Always enable the aperture when the linear base is > 0 and valid.
This commit is contained in:
TC1995
2023-08-04 15:41:47 +02:00
parent 9fb995d566
commit c6dab57a22
1 changed files with 5 additions and 16 deletions
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21
src/video/vid_ati_mach64.c
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@@ -621,27 +621,16 @@ mach64_updatemapping(mach64_t *mach64)
/*8 MB aperture*/
mem_mapping_set_addr(&mach64->linear_mapping, mach64->linear_base, (8 << 20) - 0x4000);
mem_mapping_set_addr(&mach64->mmio_linear_mapping, mach64->linear_base + ((8 << 20) - 0x4000), 0x4000);
} else if ((mach64->config_cntl & 3) == 1) {
} else {
/*4 MB aperture*/
mem_mapping_set_addr(&mach64->linear_mapping, mach64->linear_base, (4 << 20) - 0x4000);
mem_mapping_set_addr(&mach64->mmio_linear_mapping, mach64->linear_base + ((4 << 20) - 0x4000), 0x4000);
} else {
/*Disable aperture on reserved values*/
mem_mapping_disable(&mach64->linear_mapping);
mem_mapping_disable(&mach64->mmio_linear_mapping);
}
} else {
if ((mach64->config_cntl & 3) == 2) {
/*2*8 MB aperture*/
mem_mapping_set_addr(&mach64->linear_mapping, mach64->linear_base, (8 << 20) - 0x4000);
mem_mapping_set_addr(&mach64->mmio_linear_mapping, mach64->linear_base + ((8 << 20) - 0x4000), 0x4000);
mem_mapping_set_addr(&mach64->mmio_linear_mapping_2, mach64->linear_base + ((16 << 20) - 0x4000), 0x4000);
} else {
/*Disable aperture on reserved values*/
mem_mapping_disable(&mach64->linear_mapping);
mem_mapping_disable(&mach64->mmio_linear_mapping);
mem_mapping_disable(&mach64->mmio_linear_mapping_2);
}
/*2*8 MB aperture*/
mem_mapping_set_addr(&mach64->linear_mapping, mach64->linear_base, (8 << 20) - 0x4000);
mem_mapping_set_addr(&mach64->mmio_linear_mapping, mach64->linear_base + ((8 << 20) - 0x4000), 0x4000);
mem_mapping_set_addr(&mach64->mmio_linear_mapping_2, mach64->linear_base + ((16 << 20) - 0x4000), 0x4000);
}
} else {
mem_mapping_disable(&mach64->linear_mapping);