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113 lines
2.5 KiB
Rust
113 lines
2.5 KiB
Rust
2 years ago
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#![allow(dead_code, non_snake_case)]
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use super::{R6502, Bus, Flags};
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// uint8_t ADC(); uint8_t AND(); uint8_t ASL(); uint8_t BCC();
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// uint8_t BCS(); uint8_t BEQ(); uint8_t BIT(); uint8_t BMI();
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// uint8_t BNE(); uint8_t BPL(); uint8_t BRK(); uint8_t BVC();
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// uint8_t BVS(); uint8_t CLC(); uint8_t CLD(); uint8_t CLI();
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// uint8_t CLV(); uint8_t CMP(); uint8_t CPX(); uint8_t CPY();
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// uint8_t DEC(); uint8_t DEX(); uint8_t DEY(); uint8_t EOR();
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// uint8_t INC(); uint8_t INX(); uint8_t INY(); uint8_t JMP();
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// uint8_t JSR(); uint8_t LDA(); uint8_t LDX(); uint8_t LDY();
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// uint8_t LSR(); uint8_t NOP(); uint8_t ORA(); uint8_t PHA();
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// uint8_t PHP(); uint8_t PLA(); uint8_t PLP(); uint8_t ROL();
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// uint8_t ROR(); uint8_t RTI(); uint8_t RTS(); uint8_t SBC();
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// uint8_t SEC(); uint8_t SED(); uint8_t SEI(); uint8_t STA();
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// uint8_t STX(); uint8_t STY(); uint8_t TAX(); uint8_t TAY();
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// uint8_t TSX(); uint8_t TXA(); uint8_t TXS(); uint8_t TYA();
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// GROUP ONE
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// 000 ORA
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// 001 AND
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// 010 EOR
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// 011 ADC
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// 100 STA
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// 101 LDA
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// 110 CMP
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// 111 SBC
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pub struct Instructions;
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impl Instructions
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{
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pub const GROUP_ONE_OPS: [fn(&mut R6502, &mut dyn Bus); 8] = [
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Instructions::ORA,
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Instructions::AND,
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Instructions::EOR,
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Instructions::ADC,
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Instructions::STA,
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Instructions::LDA,
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Instructions::CMP,
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Instructions::SBC,
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];
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}
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impl Instructions
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{
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///////////////////////////////////////////////////////////
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// GROUP ONE
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pub fn ORA(cpu: &mut R6502, _bus: &mut dyn Bus)
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{
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cpu.a = cpu.a | cpu.working_data;
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if cpu.a == 0
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{
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cpu.set_flag(Flags::Z);
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}
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if cpu.a & 0x80 != 0
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{
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cpu.set_flag(Flags::N);
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}
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}
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pub fn AND(cpu: &mut R6502, bus: &mut dyn Bus)
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{
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}
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pub fn EOR(cpu: &mut R6502, bus: &mut dyn Bus)
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{
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}
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pub fn ADC(cpu: &mut R6502, bus: &mut dyn Bus)
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{
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}
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pub fn STA(cpu: &mut R6502, bus: &mut dyn Bus)
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{
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}
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pub fn LDA(cpu: &mut R6502, bus: &mut dyn Bus)
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{
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cpu.a = cpu.working_data;
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if cpu.a == 0
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{
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cpu.set_flag(Flags::Z);
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}
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if cpu.a & 0x80 != 0
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{
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cpu.set_flag(Flags::N);
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}
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}
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pub fn CMP(cpu: &mut R6502, bus: &mut dyn Bus)
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{
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}
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pub fn SBC(cpu: &mut R6502, bus: &mut dyn Bus)
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{
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}
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///////////////////////////////////////////////////////////
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// GROUP TWO
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}
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