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core: 

- fix swi 0x03 (CRC16) R3 contains the last processed halfword;
This commit is contained in:
mtabachenko 2012-03-29 21:01:24 +00:00
parent f18e4a4df2
commit b2547e767b
1 changed files with 4 additions and 1 deletions
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5
desmume/src/bios.cpp
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@ -1053,12 +1053,13 @@ TEMPLATE static u32 getCRC16()
u16 crc = (u16)cpu->R[0]; u16 crc = (u16)cpu->R[0];
u32 datap = cpu->R[1]; u32 datap = cpu->R[1];
u32 size = cpu->R[2]>>1; u32 size = cpu->R[2]>>1;
u16 currVal = 0;
const u16 val[] = { 0x0000,0xCC01,0xD801,0x1400,0xF001,0x3C00,0x2800,0xE401,0xA001,0x6C00,0x7800,0xB401,0x5000,0x9C01,0x8801,0x4400}; const u16 val[] = { 0x0000,0xCC01,0xD801,0x1400,0xF001,0x3C00,0x2800,0xE401,0xA001,0x6C00,0x7800,0xB401,0x5000,0x9C01,0x8801,0x4400};
for(u32 i = 0; i < size; i++) for(u32 i = 0; i < size; i++)
{ {
u16 currVal = _MMU_read16<PROCNUM>(datap + i*2); currVal = _MMU_read16<PROCNUM>(datap + i*2);
for(int j=0;j<4;j++) for(int j=0;j<4;j++)
{ {
@ -1073,6 +1074,8 @@ TEMPLATE static u32 getCRC16()
} }
cpu->R[0] = crc; cpu->R[0] = crc;
// R3 contains the last processed halfword
cpu->R[3] = currVal;
return 1; return 1;
} }