zoriya/ComSquare
1
0
Fork 0
mirror of https://github.com/zoriya/ComSquare.git synced 2025-12-20 22:25:11 +00:00
Code Issues Packages Projects Releases Wiki Activity

Adding some Program Flow operations

Browse Source
This commit is contained in:
Melefo
2020-02-21 15:50:23 +01:00
parent b1fc2754eb
commit 21aa68a623
5 changed files with 261 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

80
sources/APU/Instructions/ProgramFlow.cpp Normal file
View File

@@ -0,0 +1,80 @@
//
// Created by Melefo on 21/02/2020.
//
#include "../APU.hpp"
namespace ComSquare::APU
{
int APU::BRA()
{
int8_t offset = this->_internalRead(this->_internalRegisters.pc++);
this->_internalRegisters.pc += offset;
return 4;
}
int APU::BEQ()
{
if (!this->_internalRegisters.z)
return 2;
this->BRA();
return 4;
}
int APU::BNE()
{
if (this->_internalRegisters.z)
return 2;
this->BRA();
return 4;
}
int APU::BCS()
{
if (!this->_internalRegisters.c)
return 2;
this->BRA();
return 4;
}
int APU::BCC()
{
if (this->_internalRegisters.c)
return 2;
this->BRA();
return 4;
}
int APU::BVS()
{
if (!this->_internalRegisters.v)
return 2;
this->BRA();
return 4;
}
int APU::BVC()
{
if (this->_internalRegisters.v)
return 2;
this->BRA();
return 4;
}
int APU::BMI()
{
if (!this->_internalRegisters.n)
return 2;
this->BRA();
return 4;
}
int APU::BPL()
{
if (this->_internalRegisters.n)
return 2;
this->BRA();
return 4;
}
}