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This commit is contained in:
Melefo
2020-02-13 14:37:50 +01:00
parent b3789341de 642452a8eb
commit e7501ab0c2
139 changed files with 7895 additions and 262 deletions
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sources/APU/APU.cpp
+32 -2
View File
@@ -2,6 +2,7 @@
// Created by Melefo on 27/01/2020.
//
#include <cstring>
#include "APU.hpp"
#include "../Exceptions/NotImplementedException.hpp"
#include "../Exceptions/InvalidAddress.hpp"
@@ -15,6 +16,7 @@ namespace ComSquare::APU
this->_map.Page1 = std::make_shared<Ram::Ram>(Ram::Ram(0x0100));
this->_map.Memory = std::make_shared<Ram::Ram>(Ram::Ram(0xFDC0));
this->_map.IPL = std::make_shared<Ram::Ram>(Ram::Ram(0x0040));
this->reset();
}
uint8_t APU::_internalRead(uint24_t addr) {
@@ -150,6 +152,10 @@ namespace ComSquare::APU
}
}
void APU::reset()
{
}
int APU::executeInstruction()
{
uint8_t opcode = this->_internalRead(this->_internalRegisters.pc++);
@@ -159,32 +165,48 @@ namespace ComSquare::APU
return this->NOP();
case 0x02:
return this->SET1(_getDirectAddr(), 0);
case 0x12:
return this->CLR1(_getDirectAddr(), 0);
case 0x20:
return this->CLRP();
case 0x22:
return this->SET1(_getDirectAddr(), 1);
case 0x32:
return this->CLR1(_getDirectAddr(), 1);
case 0x40:
return this->SETP();
case 0x42:
return this->SET1(_getDirectAddr(), 2);
case 0x52:
return this->CLR1(_getDirectAddr(), 2);
case 0x60:
return this->CLRC();
case 0x62:
return this->SET1(_getDirectAddr(), 3);
case 0x72:
return this->CLR1(_getDirectAddr(), 3);
case 0x80:
return this->SETC();
case 0x82:
return this->SET1(_getDirectAddr(), 4);
case 0x92:
return this->CLR1(_getDirectAddr(), 4);
case 0xA0:
return this->EI();
case 0xA2:
return this->SET1(_getDirectAddr(), 5);
case 0xB2:
return this->CLR1(_getDirectAddr(), 5);
case 0xC0:
return this->DI();
case 0xC2:
return this->SET1(_getDirectAddr(), 6);
case 0x32:
case 0xD2:
return this->CLR1(_getDirectAddr(), 6);
case 0xE2:
return this->SET1(_getDirectAddr(), 7);
case 0xF2:
return this->CLR1(_getDirectAddr(), 7);
case 0xED:
return this->NOTC();
case 0xEF:
@@ -209,10 +231,18 @@ namespace ComSquare::APU
uint24_t APU::_getDirectAddr()
{
uint8_t addr = this->_internalRead(this->_internalRegisters.pc++);
uint24_t addr = this->_internalRead(this->_internalRegisters.pc++);
if (this->_internalRegisters.p)
addr += 0x100;
return addr;
}
uint24_t APU::_getAbsoluteAddr()
{
uint24_t addr1 = this->_internalRead(this->_internalRegisters.pc++);
uint24_t addr2 = this->_internalRead(this->_internalRegisters.pc++);
return (addr2 << 8u) | addr1;
}
}