2017-11-12 02:31:55 +00:00
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#include <stdio.h>
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#include "inc/opcodes.h"
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2017-11-12 16:02:30 +00:00
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int zz = 0;
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void decode_addressing_mode()
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{
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switch (opcode_decoded_2)
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{
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case XXX:
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printf("/---] ");
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break;
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case JSR:
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printf("/abs] ");
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break;
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case BPL: case BMI: case BVC: case BVS:
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case BCC: case BCS: case BNE: case BEQ:
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printf("/rel] ");
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break;
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case TXA: case TXS: case TAX: case TSX: case DEX:
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case NOP: case CLC: case SEC: case CLI: case SEI:
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case TYA: case CLV: case CLD: case SED: case PHP:
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case PLP: case PHA: case PLA: case DEY: case TAY:
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case INY: case INX: case BRK: case RTI: case RTS:
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printf("/imp] ");
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break;
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default:
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switch (addressing_mode)
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{
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case immediate:
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printf("/imm] ");
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break;
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case zero_page:
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printf("/zpg] ");
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break;
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case accumulator:
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printf("/acc] ");
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break;
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case absolute:
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printf("/abs] ");
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break;
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case indirect_y:
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printf("/iny] ");
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break;
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case zero_page_x:
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printf("/zpx] ");
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break;
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case absolute_y:
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printf("/aby] ");
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break;
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case absolute_x:
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printf("/abx] ");
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break;
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case indirect_x:
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printf("/inx] ");
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break;
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case zero_page_y:
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printf("/zpy] ");
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break;
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}
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break;
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}
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if (++zz % 8 == 0) { printf("\n"); }
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}
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void xxx()
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{
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// invalid opcode
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printf("%02X:[---", ir);
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decode_addressing_mode();
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}
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2017-11-12 02:31:55 +00:00
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void adc()
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{
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// add memory to accumalator with carry
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2017-11-12 16:02:30 +00:00
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printf("%02X:[ADC", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void and()
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{
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// and memory with accumulator
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2017-11-12 16:02:30 +00:00
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printf("%02X:[AND", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void asl()
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{
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// shift left one bit (memory on accumulator)
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2017-11-12 16:02:30 +00:00
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printf("%02X:[ASL", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void bcc()
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{
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// branch on carry clear
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2017-11-12 16:02:30 +00:00
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printf("%02X:[BCC", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void bcs()
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{
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// branch on carry set
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2017-11-12 16:02:30 +00:00
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printf("%02X:[BSC", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void beq()
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{
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// branch on result zero
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2017-11-12 16:02:30 +00:00
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printf("%02X:[BEQ", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void bit()
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{
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// test bits in memory with accumulator
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2017-11-12 16:02:30 +00:00
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printf("%02X:[BIT", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void bmi()
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{
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// branch on result minus
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2017-11-12 16:02:30 +00:00
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printf("%02X:[BMI", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void bne()
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{
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// branch on result not zero
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2017-11-12 16:02:30 +00:00
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printf("%02X:[BNE", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void bpl()
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{
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// branch on result plus
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2017-11-12 16:02:30 +00:00
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printf("%02X:[BPL", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void brk()
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{
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// force break
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2017-11-12 16:02:30 +00:00
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printf("%02X:[BRK", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void bvc()
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{
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// branch on overflow clear
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2017-11-12 16:02:30 +00:00
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printf("%02X:[BVC", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void bvs()
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{
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// branch on overflow set
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2017-11-12 16:02:30 +00:00
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printf("%02X:[BVS", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void clc()
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{
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// clear carry flag
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2017-11-12 16:02:30 +00:00
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printf("%02X:[CLC", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void cld()
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{
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// clear decimal mode
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2017-11-12 16:02:30 +00:00
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printf("%02X:[CLD", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void cli()
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{
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// clear interrupt disable bit
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2017-11-12 16:02:30 +00:00
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printf("%02X:[CLI", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void clv()
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{
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// clear overflow flag
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2017-11-12 16:02:30 +00:00
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printf("%02X:[CLV", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void cmp()
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{
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// compare memory with accumulator
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2017-11-12 16:02:30 +00:00
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printf("%02X:[CMP", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void cpx()
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{
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// compare memory and index x
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2017-11-12 16:02:30 +00:00
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printf("%02X:[CPX", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void cpy()
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{
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// compare memory and index y
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2017-11-12 16:02:30 +00:00
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printf("%02X:[CPY", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void dec()
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{
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// decrement memory by one
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2017-11-12 16:02:30 +00:00
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printf("%02X:[DEC", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void dex()
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{
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// decrement index x by one
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2017-11-12 16:02:30 +00:00
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printf("%02X:[DEX", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void dey()
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{
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// decrement index y by one
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2017-11-12 16:02:30 +00:00
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printf("%02X:[DEY", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void eor()
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{
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// exclusive-or memory with accumulator
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2017-11-12 16:02:30 +00:00
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printf("%02X:[EOR", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void inc()
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{
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// increment memory by one
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2017-11-12 16:02:30 +00:00
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printf("%02X:[INC", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void inx()
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{
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// increment index x by one
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2017-11-12 16:02:30 +00:00
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printf("%02X:[INX", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void iny()
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{
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// increment index y by one
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2017-11-12 16:02:30 +00:00
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printf("%02X:[INY", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void jmp()
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{
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// jump to new location
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2017-11-12 16:02:30 +00:00
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printf("%02X:[JMP", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void jsr()
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{
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// jump to new location saving return address
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2017-11-12 16:02:30 +00:00
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printf("%02X:[JSR", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void lda()
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{
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// load accumulator with memory
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2017-11-12 16:02:30 +00:00
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printf("%02X:[LDA", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void ldx()
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{
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// load index x with memory
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2017-11-12 16:02:30 +00:00
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printf("%02X:[LDX", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void ldy()
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{
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// load index y with memory
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2017-11-12 16:02:30 +00:00
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printf("%02X:[LDY", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void lsr()
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{
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// shift one bit right (memory or accumulator)
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2017-11-12 16:02:30 +00:00
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printf("%02X:[LSR", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void nop()
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{
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// no operation
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2017-11-12 16:02:30 +00:00
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printf("%02X:[NOP", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void ora()
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{
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// or memory with accumulator
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2017-11-12 16:02:30 +00:00
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printf("%02X:[ORA", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void pha()
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{
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// push accumulator on stack
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2017-11-12 16:02:30 +00:00
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printf("%02X:[PHA", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void php()
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{
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// push processor status on stack
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2017-11-12 16:02:30 +00:00
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printf("%02X:[PHP", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void pla()
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{
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// pull accumulator from stack
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2017-11-12 16:02:30 +00:00
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printf("%02X:[PLA", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void plp()
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{
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// pull processor status from stack
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2017-11-12 16:02:30 +00:00
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printf("%02X:[PLP", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void rol()
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{
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// rotate on bit left (memory or accumulator)
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2017-11-12 16:02:30 +00:00
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printf("%02X:[ROL", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void ror()
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{
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// rotate on bit right (memory or accumulator)
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2017-11-12 16:02:30 +00:00
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printf("%02X:[ROR", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void rti()
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{
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// return from interrupt
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2017-11-12 16:02:30 +00:00
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printf("%02X:[RTI", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void rts()
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{
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// retrun from subroutine
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2017-11-12 16:02:30 +00:00
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printf("%02X:[RTS", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void sbc()
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{
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// subtract memory from accumulator with borrow
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2017-11-12 16:02:30 +00:00
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printf("%02X:[SBC", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void sec()
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{
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// set carry flag
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2017-11-12 16:02:30 +00:00
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printf("%02X:[SEC", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void sed()
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{
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// set decimal flag
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2017-11-12 16:02:30 +00:00
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printf("%02X:[SED", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void sei()
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{
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// set interrupt disable status
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2017-11-12 16:02:30 +00:00
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printf("%02X:[SEI", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void sta()
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{
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// store accumulator in memory
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2017-11-12 16:02:30 +00:00
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printf("%02X:[STA", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void stx()
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{
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// store index x in memory
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2017-11-12 16:02:30 +00:00
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printf("%02X:[STX", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void sty()
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{
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// store index y in memory
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2017-11-12 16:02:30 +00:00
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printf("%02X:[STY", ir);
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decode_addressing_mode();
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2017-11-12 02:31:55 +00:00
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}
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void tax()
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{
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// transfer accumulator to index x
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2017-11-12 16:02:30 +00:00
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printf("%02X:[TAX", ir);
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decode_addressing_mode();
|
2017-11-12 02:31:55 +00:00
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}
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void tay()
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{
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// transfer accumulator to index y
|
2017-11-12 16:02:30 +00:00
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printf("%02X:[TAY", ir);
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decode_addressing_mode();
|
2017-11-12 02:31:55 +00:00
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}
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void tsx()
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{
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// transfer stack pointer to index x
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2017-11-12 16:02:30 +00:00
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printf("%02X:[TSX", ir);
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decode_addressing_mode();
|
2017-11-12 02:31:55 +00:00
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}
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void txa()
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{
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|
// transfer index x to accumulator
|
2017-11-12 16:02:30 +00:00
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|
printf("%02X:[TXA", ir);
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|
decode_addressing_mode();
|
2017-11-12 02:31:55 +00:00
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}
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void txs()
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|
{
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|
// transfer index x to stack pointer
|
2017-11-12 16:02:30 +00:00
|
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|
printf("%02X:[TXS", ir);
|
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|
decode_addressing_mode();
|
2017-11-12 02:31:55 +00:00
|
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|
}
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void tya()
|
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|
{
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|
|
|
// transfer index y to accumulator
|
2017-11-12 16:02:30 +00:00
|
|
|
printf("%02X:[TYA", ir);
|
|
|
|
decode_addressing_mode();
|
2017-11-12 02:31:55 +00:00
|
|
|
}
|