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Changing timing management

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This commit is contained in:
AnonymusRaccoon
2020-02-13 13:55:01 +01:00
parent 475fa68974
commit 4d30a35620
7 changed files with 101 additions and 92 deletions
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sources/CPU/Instructions/Interrupts.cpp
+7 -12
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@@ -6,7 +6,7 @@
namespace ComSquare::CPU
{
unsigned CPU::RESB()
void CPU::RESB()
{
this->_registers.p.i = true;
this->_registers.p.d = false;
@@ -18,10 +18,9 @@ namespace ComSquare::CPU
this->_registers.d = 0x0000;
this->_registers.sh = 0x01; // the low bit of the stack pointer is undefined on reset.
this->_registers.pc = this->_cartridgeHeader.emulationInterrupts.reset;
return 0;
}
unsigned CPU::BRK()
void CPU::BRK()
{
// TODO rework this. The PC should be pushed to the stack.
// Info here: http://softpixel.com/~cwright/sianse/docs/65816NFO.HTM at BRK Software Break
@@ -33,18 +32,14 @@ namespace ComSquare::CPU
else
this->_registers.pc = this->_cartridgeHeader.nativeInterrupts.brk;
this->_registers.p.d = false;
return !this->_isEmulationMode;
}
unsigned CPU::RTI()
void CPU::RTI()
{
this->_registers.p.flags = this->pop();
this->_registers.pc = this->pop16();
this->_registers.p.flags = this->_pop();
this->_registers.pc = this->_pop16();
if (!this->_isEmulationMode) {
this->_registers.pbr = this->pop16();
return 1;
}
return 0;
if (!this->_isEmulationMode)
this->_registers.pbr = this->_pop16();
}
}