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add support for GXFIFO NDMA

This commit is contained in:
Arisotura 2022-04-10 02:15:49 +02:00
parent 0feed13cc4
commit b572d8cd70
1 changed files with 16 additions and 5 deletions
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21
src/DSi_NDMA.cpp
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@ -123,10 +123,17 @@ void DSi_NDMA::WriteCnt(u32 val)
if ((StartMode & 0x1F) == 0x10)
Start();
else if (StartMode == 0x0A)
GPU3D::CheckFIFODMA();
if (StartMode != 0x10 && StartMode != 0x30 &&
StartMode != 0x04 && StartMode != 0x06 && StartMode != 0x07 && StartMode != 0x08 && StartMode != 0x09 && StartMode != 0x0B &&
StartMode != 0x24 && StartMode != 0x26 && StartMode != 0x28 && StartMode != 0x29 && StartMode != 0x2A && StartMode != 0x2B)
// TODO: unsupported start modes:
// * timers (00-03)
// * camera (ARM9 0B)
// * microphone (ARM7 0C)
// * NDS-wifi?? (ARM7 07, likely not working)
if (StartMode <= 0x03 || StartMode == 0x05 || (StartMode >= 0x0B && StartMode <= 0x0F) ||
(StartMode >= 0x20 && StartMode <= 0x23) || StartMode == 0x25 || StartMode == 0x27 || (StartMode >= 0x2C && StartMode <= 0x2F))
printf("UNIMPLEMENTED ARM%d NDMA%d START MODE %02X, %08X->%08X LEN=%d BLK=%d CNT=%08X\n",
CPU?7:9, Num, StartMode, SrcAddr, DstAddr, TotalLength, BlockLength, Cnt);
}
@ -143,8 +150,12 @@ void DSi_NDMA::Start()
RemCount = 0x1000000;
}
// TODO: how does GXFIFO DMA work with all the block shito?
IterCount = RemCount;
// CHECKME: this is assumed to work the same as the old DMA version
// also not really certain how this interacts with the block subdivision system here
if (StartMode == 0x0A && RemCount > 112)
IterCount = 112;
else
IterCount = RemCount;
if (((StartMode & 0x1F) != 0x10) && !(Cnt & (1<<29)))
{