2024-07-07 13:04:10 -04:00
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#ifndef CPU_H
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#define CPU_H
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2024-06-30 19:10:29 -04:00
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#include <stdint.h>
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2024-07-07 13:04:10 -04:00
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struct cpu_flags {
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uint8_t carry : 1;
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uint8_t zero : 1;
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uint8_t interrupt_disable : 1;
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uint8_t decimal_mode : 1;
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uint8_t brk : 1;
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uint8_t unused : 1;
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uint8_t overflow : 1;
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uint8_t negative : 1;
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};
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struct registers {
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uint8_t a, x, y, sp;
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struct cpu_flags status;
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uint16_t pc;
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};
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struct registers regs = {0};
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/* 64K address space, 16bit words */
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uint8_t memory[0x16000];
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2024-07-04 12:11:53 -04:00
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/* OFFICIAL OPCODES */
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2024-06-30 19:10:29 -04:00
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void ADC(uint16_t arg);
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void AND(uint16_t arg);
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void ASL_acc(uint16_t arg);
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void ASL(uint16_t arg);
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void BCC(uint16_t arg);
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void BCS(uint16_t arg);
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void BEQ(uint16_t arg);
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void BIT(uint16_t arg);
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void BMI(uint16_t arg);
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void BNE(uint16_t arg);
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void BPL(uint16_t arg);
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void BRK(uint16_t arg);
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void BVC(uint16_t arg);
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void BVS(uint16_t arg);
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void CLC(uint16_t arg);
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void CLD(uint16_t arg);
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void CLI(uint16_t arg);
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void CLV(uint16_t arg);
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void CMP(uint16_t arg);
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void CPX(uint16_t arg);
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void CPY(uint16_t arg);
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void DEC(uint16_t arg);
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void DEX(uint16_t arg);
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void DEY(uint16_t arg);
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void EOR(uint16_t arg);
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void INC(uint16_t arg);
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void INX(uint16_t arg);
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void INY(uint16_t arg);
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void JMP(uint16_t arg);
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void JSR(uint16_t arg);
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void LDA(uint16_t arg);
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void LDX(uint16_t arg);
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void LDY(uint16_t arg);
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void LSR_acc(uint16_t arg);
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void LSR(uint16_t arg);
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void NOP(uint16_t arg);
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void ORA(uint16_t arg);
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void PHA(uint16_t arg);
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void PHP(uint16_t arg);
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void PLA(uint16_t arg);
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void PLP(uint16_t arg);
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void ROL_acc(uint16_t arg);
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void ROL(uint16_t arg);
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void ROR_acc(uint16_t arg);
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void ROR(uint16_t arg);
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void RTI(uint16_t arg);
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void RTS(uint16_t arg);
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void SBC(uint16_t arg);
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void SEC(uint16_t arg);
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void SED(uint16_t arg);
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void SEI(uint16_t arg);
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void STA(uint16_t arg);
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void STX(uint16_t arg);
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void STY(uint16_t arg);
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void TAX(uint16_t arg);
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void TAY(uint16_t arg);
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void TSX(uint16_t arg);
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void TXA(uint16_t arg);
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void TXS(uint16_t arg);
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void TYA(uint16_t arg);
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2024-07-04 12:11:53 -04:00
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/* UNOFFICIAL OPCODES */
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void AAC(uint16_t arg);
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2024-07-04 14:17:40 -04:00
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void SAX(uint16_t arg);
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2024-07-04 12:11:53 -04:00
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void ARR(uint16_t arg);
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void ASR(uint16_t arg);
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void ATX(uint16_t arg);
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void AXA(uint16_t arg);
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void AXS(uint16_t arg);
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void DCP(uint16_t arg);
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void DOP(uint16_t arg);
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2024-07-04 15:06:15 -04:00
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void ISB(uint16_t arg);
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2024-07-04 12:11:53 -04:00
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void KIL(uint16_t arg);
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void LAR(uint16_t arg);
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void LAX(uint16_t arg);
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void NOP(uint16_t arg);
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void RLA(uint16_t arg);
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void RRA(uint16_t arg);
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void SBC(uint16_t arg);
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void SLO(uint16_t arg);
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void SRE(uint16_t arg);
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void SXA(uint16_t arg);
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void SYA(uint16_t arg);
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void TOP(uint16_t arg);
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void XAA(uint16_t arg);
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void XAS(uint16_t arg);
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2024-07-07 13:04:10 -04:00
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#endif /* CPU_H */
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