65oo2/lib/op.c

#include <stddef.h>
#include "op.h"

const uint8_t opcode_addr[OP_MAX] = {
  /*       0-         */
  /* BRK */ OP_ADDR_IMPL,
  /* ORA */ OP_ADDR_IND | OP_ADDR_X,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* ORA */ 0xFF,
  /* ASL */ 0xFF,
  /*     */ 0xFF,
  /* PHP */ OP_ADDR_IMPL,
  /* ORA */ OP_ADDR_IMM,
  /* ASL */ OP_ADDR_IMPL | OP_ADDR_A,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* ORA */ OP_ADDR_ABS,
  /* ASL */ OP_ADDR_ABS,
  /*     */ 0xFF,

  /*       1-       */
  /* BPL */ OP_ADDR_REL,
  /* ORA */ OP_ADDR_IND | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* ORA */ 0xFF,
  /* ASL */ 0xFF,
  /*     */ 0xFF,
  /* CLC */ OP_ADDR_IMPL,
  /* ORA */ OP_ADDR_ABS | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* ORA */ OP_ADDR_ABS | OP_ADDR_X,
  /* ASL */ OP_ADDR_ABS | OP_ADDR_X,
  /*     */ 0xFF,

  /*       2-       */
  /* JSR */ OP_ADDR_ABS,
  /* AND */ OP_ADDR_IND | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* BIT */ 0xFF,
  /* AND */ 0xFF,
  /* ROL */ 0xFF,
  /*     */ 0xFF,
  /* PLP */ OP_ADDR_IMPL,
  /* AND */ OP_ADDR_IMM,
  /* ROL */ OP_ADDR_IMPL | OP_ADDR_A,
  /*     */ 0xFF,
  /* BIT */ OP_ADDR_ABS,
  /* AND */ OP_ADDR_ABS,
  /* ROL */ OP_ADDR_ABS,
  /*     */ 0xFF,

  /*       3-       */
  /* BMI */ OP_ADDR_REL,
  /* AND */ OP_ADDR_IND | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* AND */ 0xFF,
  /* ROL */ 0xFF,
  /*     */ 0xFF,
  /* SEC */ OP_ADDR_IMPL,
  /* AND */ OP_ADDR_ABS | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* AND */ OP_ADDR_ABS | OP_ADDR_X,
  /* ROL */ OP_ADDR_ABS | OP_ADDR_X,
  /*     */ 0xFF,

  /*       4-       */
  /* RTI */ OP_ADDR_IMPL,
  /* EOR */ OP_ADDR_IND | OP_ADDR_X,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* EOR */ 0xFF,
  /* LSR */ 0xFF,
  /*     */ 0xFF,
  /* PHA */ OP_ADDR_IMPL,
  /* EOR */ OP_ADDR_IMM,
  /* LSR */ OP_ADDR_IMPL | OP_ADDR_A,
  /*     */ 0xFF,
  /* JMP */ OP_ADDR_ABS,
  /* EOR */ OP_ADDR_ABS,
  /* LSR */ OP_ADDR_ABS,
  /*     */ 0xFF,

  /*       5-       */
  /* BVC */ OP_ADDR_REL,
  /* EOR */ OP_ADDR_IND | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* EOR */ 0xFF,
  /* LSR */ 0xFF,
  /*     */ 0xFF,
  /* CLI */ OP_ADDR_IMPL,
  /* EOR */ OP_ADDR_ABS | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* EOR */ OP_ADDR_ABS | OP_ADDR_X,
  /* LSR */ OP_ADDR_ABS | OP_ADDR_X,
  /*     */ 0xFF,

  /*       6-       */
  /* RTS */ OP_ADDR_IMPL,
  /* ADC */ OP_ADDR_IND | OP_ADDR_X,
  /* PER */ OP_ADDR_IMPL,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* ADC */ 0xFF,
  /* ROR */ 0xFF,
  /*     */ 0xFF,
  /* PLA */ OP_ADDR_IMPL,
  /* ADC */ OP_ADDR_IMM,
  /* ROR */ OP_ADDR_IMPL | OP_ADDR_A,
  /*     */ 0xFF,
  /* JMP */ OP_ADDR_IND,
  /* ADC */ OP_ADDR_ABS,
  /* ROR */ OP_ADDR_ABS,
  /*     */ 0xFF,

  /*       7-       */
  /* BVS */ OP_ADDR_REL,
  /* ADC */ OP_ADDR_IND | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* ADC */ 0xFF,
  /* ROR */ 0xFF,
  /*     */ 0xFF,
  /* SEI */ OP_ADDR_IMPL,
  /* ADC */ OP_ADDR_ABS | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* ADC */ OP_ADDR_ABS | OP_ADDR_X,
  /* ROR */ OP_ADDR_ABS | OP_ADDR_X,
  /*     */ 0xFF,

  /*       8-       */
  /*     */ 0xFF,
  /* STA */ OP_ADDR_IND | OP_ADDR_X,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* STY */ 0xFF,
  /* STA */ 0xFF,
  /* STX */ 0xFF,
  /*     */ 0xFF,
  /* DEY */ OP_ADDR_IMPL,
  /*     */ 0xFF,
  /* TXA */ OP_ADDR_IMPL,
  /*     */ 0xFF,
  /* STY */ OP_ADDR_ABS,
  /* STA */ OP_ADDR_ABS,
  /* STX */ OP_ADDR_ABS,
  /*     */ 0xFF,

  /*       9-       */
  /* BCC */ OP_ADDR_REL,
  /* STA */ OP_ADDR_IND | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* STY */ 0xFF,
  /* STA */ 0xFF,
  /* STX */ 0xFF,
  /*     */ 0xFF,
  /* TYA */ OP_ADDR_IMPL,
  /* STA */ OP_ADDR_ABS | OP_ADDR_Y,
  /* TXS */ OP_ADDR_IMPL,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* STA */ OP_ADDR_ABS | OP_ADDR_X,
  /*     */ 0xFF,
  /*     */ 0xFF,

  /*       A-       */
  /* LDY */ OP_ADDR_IMM,
  /* LDA */ OP_ADDR_IND | OP_ADDR_X,
  /* LDX */ OP_ADDR_IMM,
  /*     */ 0xFF,
  /* LDY */ 0xFF,
  /* LDA */ 0xFF,
  /* LDX */ 0xFF,
  /*     */ 0xFF,
  /* TAY */ OP_ADDR_IMPL,
  /* LDA */ OP_ADDR_IMM,
  /* TAX */ OP_ADDR_IMPL,
  /*     */ 0xFF,
  /* LDY */ OP_ADDR_ABS,
  /* LDA */ OP_ADDR_ABS,
  /* LDX */ OP_ADDR_ABS,
  /*     */ 0xFF,

  /*       B-       */
  /* BCS */ OP_ADDR_REL,
  /* LDA */ OP_ADDR_IND | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* LDY */ 0xFF,
  /* LDA */ 0xFF,
  /* LDX */ 0xFF,
  /*     */ 0xFF,
  /* CLV */ OP_ADDR_IMPL,
  /* LDA */ OP_ADDR_ABS | OP_ADDR_Y,
  /* TSX */ OP_ADDR_IMPL,
  /*     */ 0xFF,
  /* LDY */ OP_ADDR_ABS | OP_ADDR_X,
  /* LDA */ OP_ADDR_ABS | OP_ADDR_X,
  /* LDX */ OP_ADDR_ABS | OP_ADDR_Y,
  /*     */ 0xFF,

  /*       C-       */
  /* CPY */ OP_ADDR_IMM,
  /* CMP */ OP_ADDR_IND | OP_ADDR_X,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* CPY */ 0xFF,
  /* CMP */ 0xFF,
  /* DEC */ 0xFF,
  /*     */ 0xFF,
  /* INY */ OP_ADDR_IMPL,
  /* CMP */ OP_ADDR_IMM,
  /* DEX */ OP_ADDR_IMPL,
  /*     */ 0xFF,
  /* CPY */ OP_ADDR_ABS,
  /* CMP */ OP_ADDR_ABS,
  /* DEC */ OP_ADDR_ABS,
  /*     */ 0xFF,

  /*       D-       */
  /* BNE */ OP_ADDR_REL,
  /* CMP */ OP_ADDR_IND | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* CMP */ 0xFF,
  /* DEC */ 0xFF,
  /*     */ 0xFF,
  /* CLD */ OP_ADDR_IMPL,
  /* CMP */ OP_ADDR_ABS | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* CMP */ OP_ADDR_ABS | OP_ADDR_X,
  /* DEC */ OP_ADDR_ABS | OP_ADDR_X,
  /*     */ 0xFF,

  /*       E-       */
  /* CPX */ OP_ADDR_IMM,
  /* SBC */ OP_ADDR_IND | OP_ADDR_X,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* CPX */ 0xFF,
  /* SBC */ 0xFF,
  /* INC */ 0xFF,
  /*     */ 0xFF,
  /* INX */ OP_ADDR_IMPL,
  /* SBC */ OP_ADDR_IMM,
  /* NOP */ OP_ADDR_IMPL,
  /*     */ 0xFF,
  /* CPX */ OP_ADDR_ABS,
  /* SBC */ OP_ADDR_ABS,
  /* INC */ OP_ADDR_ABS,
  /*     */ 0xFF,

  /*       F-       */
  /* BEQ */ OP_ADDR_REL,
  /* SBC */ OP_ADDR_IND | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* SBC */ 0xFF,
  /* INC */ 0xFF,
  /*     */ 0xFF,
  /* SED */ OP_ADDR_IMPL,
  /* SBC */ OP_ADDR_ABS | OP_ADDR_Y,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /*     */ 0xFF,
  /* SBC */ OP_ADDR_ABS | OP_ADDR_X,
  /* INC */ OP_ADDR_ABS | OP_ADDR_X,
  /*     */ 0xFF
};

const char *opcode_str[OP_MAX] = {
	"BRK", "ORA", NULL,  NULL, NULL,  "ORA", "ASL", NULL, "PHP", "ORA", "ASL", NULL, NULL,  "ORA", "ASL", NULL,
	"BPL", "ORA", NULL,  NULL, NULL,  "ORA", "ASL", NULL, "CLC", "ORA", NULL,  NULL, NULL,  "ORA", "ASL", NULL,
	"JSR", "AND", NULL,  NULL, "BIT", "AND", "ROL", NULL, "PLP", "AND", "ROL", NULL, "BIT", "AND", "ROL", NULL,
	"BMI", "AND", NULL,  NULL, NULL,  "AND", "ROL", NULL, "SEC", "AND", NULL,  NULL, NULL,  "AND", "ROL", NULL,
	"RTI", "EOR", NULL,  NULL, NULL,  "EOR", "LSR", NULL, "PHA", "EOR", "LSR", NULL, "JMP", "EOR", "LSR", NULL,
	"BVC", "EOR", NULL,  NULL, NULL,  "EOR", "LSR", NULL, "CLI", "EOR", NULL,  NULL, NULL,  "EOR", "LSR", NULL,
	"RTS", "ADC", "PER", NULL, NULL,  "ADC", "ROR", NULL, "PLA", "ADC", "ROR", NULL, "JMP", "ADC", "ROR", NULL,
	"BVS", "ADC", NULL,  NULL, NULL,  "ADC", "ROR", NULL, "SEI", "ADC", NULL,  NULL, NULL,  "ADC", "ROR", NULL,
	NULL,  "STA", NULL,  NULL, "STY", "STA", "STX", NULL, "DEY", NULL,  "TXA", NULL, "STY", "STA", "STX", NULL,
	"BCC", "STA", NULL,  NULL, "STY", "STA", "STX", NULL, "TYA", "STA", "TXS", NULL, NULL,  "STA", NULL,  NULL,
	"LDY", "LDA", "LDX", NULL, "LDY", "LDA", "LDX", NULL, "TAY", "LDA", "TAX", NULL, "LDY", "LDA", "LDX", NULL,
	"BCS", "LDA", NULL,  NULL, "LDY", "LDA", "LDX", NULL, "CLV", "LDA", "TSX", NULL, "LDY", "LDA", "LDX", NULL,
	"CPY", "CMP", NULL,  NULL, "CPY", "CMP", "DEC", NULL, "INY", "CMP", "DEX", NULL, "CPY", "CMP", "DEC", NULL,
	"BNE", "CMP", NULL,  NULL, NULL,  "CMP", "DEC", NULL, "CLD", "CMP", NULL,  NULL, NULL,  "CMP", "DEC", NULL,
	"CPX", "SBC", NULL,  NULL, "CPX", "SBC", "INC", NULL, "INX", "SBC", "NOP", NULL, "CPX", "SBC", "INC", NULL,
	"BEQ", "SBC", NULL,  NULL, NULL,  "SBC", "INC", NULL, "SED", "SBC", NULL,  NULL, NULL,  "SBC", "INC", NULL
};