void SI_DMA_READ (usf_state_t * state) {
if ((int32_t)SI_DRAM_ADDR_REG > (int32_t)state->RdramSize) {
return;
}
PifRamRead(state);
SI_DRAM_ADDR_REG &= 0xFFFFFFF8;
if ((int32_t)SI_DRAM_ADDR_REG < 0) {
int32_t count, RdramPos;
RdramPos = (int32_t)SI_DRAM_ADDR_REG;
for (count = 0; count < 0x40; count++, RdramPos++) {
if (RdramPos < 0) { continue; }
state->N64MEM[RdramPos ^3] = state->PIF_Ram[count];
}
} else {
int32_t count, RdramPos;
RdramPos = (uint32_t)SI_DRAM_ADDR_REG;
for (count = 0; count < 0x40; count++, RdramPos++) {
if (RdramPos < 0) { continue; }
state->N64MEM[RdramPos ^3] = state->PIF_Ram[count];
}
}
MI_INTR_REG |= MI_INTR_SI;
SI_STATUS_REG |= SI_STATUS_INTERRUPT;
CheckInterrupts(state);
}
void SI_DMA_READ (void) {
BYTE * PifRamPos = &PIF_Ram[0];
if ((int)SI_DRAM_ADDR_REG > (int)RdramSize) {
#ifndef EXTERNAL_RELEASE
DisplayError("SI DMA\nSI_DRAM_ADDR_REG not in RDRam space");
#endif
return;
}
PifRamRead();
SI_DRAM_ADDR_REG &= 0xFFFFFFF8;
if ((int)SI_DRAM_ADDR_REG < 0) {
int count, RdramPos;
RdramPos = (int)SI_DRAM_ADDR_REG;
for (count = 0; count < 0x40; count++, RdramPos++) {
if (RdramPos < 0) { continue; }
N64MEM[RdramPos ^3] = PIF_Ram[count];
}
} else {
_asm {
mov edi, dword ptr [RegSI]
mov edi, dword ptr [edi]
add edi, N64MEM
mov ecx, PifRamPos
mov edx, 0
memcpyloop:
mov eax, dword ptr [ecx + edx]
bswap eax
mov dword ptr [edi + edx],eax
mov eax, dword ptr [ecx + edx + 4]
bswap eax
mov dword ptr [edi + edx + 4],eax
mov eax, dword ptr [ecx + edx + 8]
bswap eax
mov dword ptr [edi + edx + 8],eax
mov eax, dword ptr [ecx + edx + 12]
bswap eax
mov dword ptr [edi + edx + 12],eax
add edx, 16
cmp edx, 64
jb memcpyloop
}
}
#if (!defined(EXTERNAL_RELEASE))
if (LogOptions.LogPRDMAMemStores) {
int count;
char HexData[100], AsciiData[100], Addon[20];
LogMessage("\tData DMAed to RDRAM:");
LogMessage("\t--------------------");
for (count = 0; count < 16; count ++ ) {
if ((count % 4) == 0) {
sprintf(HexData,"\0");
sprintf(AsciiData,"\0");
}
sprintf(Addon,"%02X %02X %02X %02X",
PIF_Ram[(count << 2) + 0], PIF_Ram[(count << 2) + 1],
PIF_Ram[(count << 2) + 2], PIF_Ram[(count << 2) + 3] );
strcat(HexData,Addon);
if (((count + 1) % 4) != 0) {
sprintf(Addon,"-");
strcat(HexData,Addon);
}
sprintf(Addon,"%c%c%c%c",
PIF_Ram[(count << 2) + 0], PIF_Ram[(count << 2) + 1],
PIF_Ram[(count << 2) + 2], PIF_Ram[(count << 2) + 3] );
strcat(AsciiData,Addon);
if (((count + 1) % 4) == 0) {
LogMessage("\t%s %s",HexData, AsciiData);
}
}
LogMessage("");
}
#endif
if (DelaySI) {
ChangeTimer(SiTimer,0x900);
} else {
MI_INTR_REG |= MI_INTR_SI;
SI_STATUS_REG |= SI_STATUS_INTERRUPT;
CheckInterrupts();
}
}