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Implementing an array of instructions with method's pointer for the CPU (it does not work well for now

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This commit is contained in:
Anonymus Raccoon
2020-03-26 03:39:55 +01:00
parent 4b9f8002b9
commit bd948b520c
25 changed files with 924 additions and 724 deletions
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sources/CPU/Instructions/MemoryInstructions.cpp
+14 -7
View File
@@ -6,7 +6,7 @@
namespace ComSquare::CPU
{
void CPU::STA(uint24_t addr)
int CPU::STA(uint24_t addr)
{
if (this->_registers.p.m)
this->_bus->write(addr, this->_registers.al);
@@ -14,9 +14,10 @@ namespace ComSquare::CPU
this->_bus->write(addr, this->_registers.al);
this->_bus->write(addr + 1, this->_registers.ah);
}
return 0;
}
void CPU::STX(uint24_t addr)
int CPU::STX(uint24_t addr)
{
if (this->_registers.p.x_b)
this->_bus->write(addr, this->_registers.xl);
@@ -24,9 +25,10 @@ namespace ComSquare::CPU
this->_bus->write(addr, this->_registers.xl);
this->_bus->write(addr + 1, this->_registers.xh);
}
return 0;
}
void CPU::STY(uint24_t addr)
int CPU::STY(uint24_t addr)
{
if (this->_registers.p.x_b)
this->_bus->write(addr, this->_registers.yl);
@@ -34,16 +36,18 @@ namespace ComSquare::CPU
this->_bus->write(addr, this->_registers.yl);
this->_bus->write(addr + 1, this->_registers.yh);
}
return 0;
}
void CPU::STZ(uint24_t addr)
int CPU::STZ(uint24_t addr)
{
this->_bus->write(addr, 0x00);
if (!this->_registers.p.m)
this->_bus->write(addr + 1, 0x00);
return 0;
}
void CPU::LDA(uint24_t addr)
int CPU::LDA(uint24_t addr)
{
if (this->_registers.p.m) {
this->_registers.a = this->_bus->read(addr);
@@ -54,9 +58,10 @@ namespace ComSquare::CPU
this->_registers.p.n = this->_registers.a & 0xF000u;
}
this->_registers.p.z = this->_registers.a == 0x0;
return 0;
}
void CPU::LDX(uint24_t addr)
int CPU::LDX(uint24_t addr)
{
if (this->_registers.p.x_b) {
this->_registers.x = this->_bus->read(addr);
@@ -67,9 +72,10 @@ namespace ComSquare::CPU
this->_registers.p.n = this->_registers.x & 0xF000u;
}
this->_registers.p.z = this->_registers.x == 0x0;
return 0;
}
void CPU::LDY(uint24_t addr)
int CPU::LDY(uint24_t addr)
{
if (this->_registers.p.x_b) {
this->_registers.y = this->_bus->read(addr);
@@ -80,5 +86,6 @@ namespace ComSquare::CPU
this->_registers.p.n = this->_registers.y & 0xF000u;
}
this->_registers.p.z = this->_registers.y == 0x0;
return 0;
}
}