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More DSPSpy findings - nakee's "TSTAXL" isn't test. Not sure what it is though.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3003 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
hrydgard 2009-04-18 21:35:21 +00:00
parent d939afdcf2
commit b4c22390ac
4 changed files with 39 additions and 15 deletions
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18
Source/Core/DSPCore/Src/DSPInterpreter.cpp
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@ -510,7 +510,7 @@ void si(const UDSPInstruction& opc)
// TSTAXH $axR.h
// 1000 011r xxxx xxxx
// Test hight part of secondary accumulator $axR.h.
// Test high part of secondary accumulator $axR.h.
void tstaxh(const UDSPInstruction& opc)
{
u8 reg = (opc.hex >> 8) & 0x1;
@ -519,15 +519,17 @@ void tstaxh(const UDSPInstruction& opc)
Update_SR_Register16(val);
}
// TSTAXL $axR.h
// 1000 011r xxxx xxxx
// Test lower part of secondary accumulator $axR.h.
// TSTAXL $acR
// 1000 r001 xxxx xxxx
// r specifies one of the main accumulators.
// Definitely not a test instruction - it changes the accums.
// Not affected by m0/m2. Not affected by s16/s40.
void tstaxl(const UDSPInstruction& opc)
{
u8 reg = (opc.hex >> 8) & 0x1;
s16 val = dsp_get_ax_l(reg);
Update_SR_Register16(val);
// This is probably all wrong.
//u8 reg = (opc.hex >> 8) & 0x1;
//s16 val = dsp_get_ax_l(reg);
//Update_SR_Register16(val);
}
// CLR $acR