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unfuck the DSP enough that it will actually run code

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(don't get your hopes up, it's still pretty much a trainwreck)
This commit is contained in:
Arisotura
2022-10-11 00:26:42 +02:00
parent 9a85bc7453
commit b33f0434a6
3 changed files with 22 additions and 9 deletions
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21
src/DSi_DSP.cpp
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@ -214,6 +214,11 @@ inline bool IsDSPCoreEnabled()
return (DSi::SCFG_Clock9 & (1<<1)) && SCFG_RST && (!(DSP_PCFG & (1<<0)));
}
inline bool IsDSPIOEnabled()
{
return (DSi::SCFG_Clock9 & (1<<1)) && SCFG_RST;
}
bool DSPCatchUp()
{
//asm volatile("int3");
@ -390,7 +395,8 @@ u16 PDataDMAReadMMIO()
u8 Read8(u32 addr)
{
if (!DSPCatchUp()) return 0;
if (!IsDSPIOEnabled()) return 0;
DSPCatchUp();
addr &= 0x3F; // mirroring wheee
@ -416,7 +422,9 @@ u8 Read8(u32 addr)
}
u16 Read16(u32 addr)
{
if (!DSPCatchUp()) return 0;
//printf("DSP READ16 %d %08X %08X\n", IsDSPCoreEnabled(), addr, NDS::GetPC(0));
if (!IsDSPIOEnabled()) return 0;
DSPCatchUp();
addr &= 0x3E; // mirroring wheee
@ -464,7 +472,8 @@ u32 Read32(u32 addr)
void Write8(u32 addr, u8 val)
{
if (!DSPCatchUp()) return;
if (!IsDSPIOEnabled()) return;
DSPCatchUp();
addr &= 0x3F;
switch (addr)
@ -484,7 +493,9 @@ void Write8(u32 addr, u8 val)
}
void Write16(u32 addr, u16 val)
{
if (!DSPCatchUp()) return;
//printf("DSP WRITE16 %d %08X %08X %08X\n", IsDSPCoreEnabled(), addr, val, NDS::GetPC(0));
if (!IsDSPIOEnabled()) return;
DSPCatchUp();
addr &= 0x3E;
switch (addr)
@ -494,6 +505,8 @@ void Write16(u32 addr, u16 val)
case 0x08:
DSP_PCFG = val;
if (DSP_PCFG & (1<<0))
TeakraCore->Reset();
if (DSP_PCFG & (1<<4))
PDataDMAStart();
else