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fix Super FX voxel demo #241

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fix Super FX voxel demo #241

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d54860a
sfc: Add database entry for the "Super FX voxel demo" to specify a RA…
jbo-85 Mar 14, 2022
1cfd9c6
sfc: Fix regression with several SuperFX games like Doom
jbo-85 May 31, 2022
8c46f11
sfc: revert RAM changes, since RAM is always a power of two, thanks c…
jbo-85 Sep 5, 2022
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24 changes: 24 additions & 0 deletions bsnes/Database/Super Famicom.bml
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,30 @@ game
size: 0x80000
content: Program

//Prototypes (USA)

database
revision: 2022-03-14

game
sha256: 4362afe51da8a01a67a1c2d6c2545d9e7cbaf8c42fd8f319dd8b61fe328512e1
name: Super FX voxel demo
title: Super FX voxel demo
label: Voxels in progress
region: USA
revision: 1.0
board: GSU-RAM
memory
type: ROM
size: 0x60000
content: Program
memory
type: RAM
size: 0x10000
content: Save
oscillator
frequency: 21440000

//Super Comboy (KOR)

database
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7 changes: 5 additions & 2 deletions bsnes/sfc/coprocessor/superfx/memory.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -5,16 +5,19 @@ auto SuperFX::read(uint addr, uint8 data) -> uint8 {
synchronizeCPU();
if(synchronizing()) break;
}
return rom.read((((addr & 0x3f0000) >> 1) | (addr & 0x7fff)) & romMask);
addr = (((addr & 0x3f0000) >> 1) | (addr & 0x7fff));
addr = Bus::mirror(addr, rom.size());
return rom.read(addr);
}

if((addr & 0xe00000) == 0x400000) { //$40-5f:0000-ffff
addr = Bus::mirror(addr, rom.size());
while(!regs.scmr.ron) {
step(6);
synchronizeCPU();
if(synchronizing()) break;
}
return rom.read(addr & romMask);
return rom.read(addr);
}

if((addr & 0xe00000) == 0x600000) { //$60-7f:0000-ffff
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