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Adding branch instructions

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This commit is contained in:
AnonymusRaccoon
2020-02-28 19:20:59 +01:00
parent 68b82c9cda
commit d1561f1be3
6 changed files with 417 additions and 2 deletions
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sources/CPU/CPU.cpp
+12 -1
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@@ -328,7 +328,7 @@ namespace ComSquare::CPU
case Instructions::XCE: this->XCE(); return 2;
case Instructions::SBC_IM: this->SBC(this->_getImmediateAddrForA()); return 2 + !this->_registers.p.m;
case Instructions::SBC_IM: this->SBC(this->_getImmediateAddrForA()); return 2 + !this->_registers.p.m;
case Instructions::SBC_ABS: this->SBC(this->_getAbsoluteAddr()); return 4 + !this->_registers.p.m;
case Instructions::SBC_ABSl: this->SBC(this->_getAbsoluteLongAddr()); return 5 + !this->_registers.p.m;
case Instructions::SBC_DP: this->SBC(this->_getDirectAddr()); return 3 + !this->_registers.p.m + this->_registers.dl != 0;
@@ -359,6 +359,17 @@ namespace ComSquare::CPU
case Instructions::CPY_ABS: this->CPY(this->_getAbsoluteAddr()); return 4 + !this->_registers.p.m;
case Instructions::CPY_DP: this->CPY(this->_getDirectAddr()); return 3 + !this->_registers.p.m + this->_registers.dl != 0;
case Instructions::BCC: return this->BCC(this->_registers.pc++) + 2 + this->_isEmulationMode;
case Instructions::BCS: return this->BCS(this->_registers.pc++) + 2 + this->_isEmulationMode;
case Instructions::BEQ: return this->BEQ(this->_registers.pc++) + 2 + this->_isEmulationMode;
case Instructions::BNE: return this->BNE(this->_registers.pc++) + 2 + this->_isEmulationMode;
case Instructions::BMI: return this->BMI(this->_registers.pc++) + 2 + this->_isEmulationMode;
case Instructions::BPL: return this->BPL(this->_registers.pc++) + 2 + this->_isEmulationMode;
case Instructions::BVC: return this->BVC(this->_registers.pc++) + 2 + this->_isEmulationMode;
case Instructions::BVS: return this->BVS(this->_registers.pc++) + 2 + this->_isEmulationMode;
case Instructions::BRA: this->BRA(this->_registers.pc++); return 3 + this->_isEmulationMode;
case Instructions::BRL: this->BRL(this->_registers.pc); this->_registers.pc += 2; return 4;
default:
throw InvalidOpcode("CPU", opcode);
}