C02/a02.h

/* Definitions for A02 Assembler */

#define MAXSTR 128  //Maximum String Length
#define MAXSYM 8    //Maximum Symbol Length
#define MAXGLB 1024  //Maximum Number of Global Labels

#define FALSE 0
#define TRUE -1

/* Address Mode Bit Masks */
#define ACMLT 0x0001  //Accumulator [$xA]
#define IMMDT 0x0002  //*Immediate [w/Acc]
#define ZPAGE 0x0004  //Zero Page
#define ZPAGX 0x0008  //*Zero Page,X
//#define ZPAGY 0x0010  //*Zero Page,Y [By OpCodes]
#define ABSLT 0x0020  //Absolute
#define ABSLX 0x0040  //*Absolute,X [fixops()]
#define ABSLY 0x0080  //Absolute,Y 
#define IMPLD 0x0100  //*Implied [x0001]
#define INDCT 0x0200  //(Indirect)
#define INDCX 0x0400  //(Indirect,X)
#define INDCY 0x0800  //(Indirect),Y
#define RELTV 0x1000  //Relative

struct opc {char name[4], token; int amode;};

struct opc opclst[] = {
  {"EQU", '=', 0},
  {"BYT", 'B', 0},
  {"WOR", 'W', 0},
  {"FIL", 'F', 0},
  {"SUB", 'S', 0},
  {"ORG", '*', 0},
  {"PRO", 'P', 0},
  {"BRK", 0x00, 0x0100},
  {"CLC", 0x18, 0x0100},
  {"CLD", 0xD8, 0x0100},
  {"CLI", 0x58, 0x0100},
  {"CLV", 0xB8, 0x0100},
  {"DEX", 0xCA, 0x0100},
  {"DEY", 0x88, 0x0100},
  {"INX", 0xE8, 0x0100},
  {"INY", 0xC8, 0x0100},
  {"NOP", 0xEA, 0x0100},
  {"PHA", 0x48, 0x0100},
  {"PHP", 0x08, 0x0100},
  {"PHX", 0xDA, 0x0100},
  {"PHY", 0x5A, 0x0100},
  {"PLA", 0x68, 0x0100},
  {"PLP", 0x28, 0x0100},
  {"PLX", 0xFA, 0x0100},
  {"PLY", 0x7A, 0x0100},
  {"RTI", 0x40, 0x0100},
  {"RTS", 0x60, 0x0100},
  {"SEC", 0x38, 0x0100},
  {"SED", 0xF8, 0x0100},
  {"SEI", 0x78, 0x0100},
  {"STP", 0xDB, 0x0100},
  {"TAX", 0xAA, 0x0100},
  {"TAY", 0xA8, 0x0100},
  {"TSX", 0xBA, 0x0100},
  {"TXA", 0x8A, 0x0100},
  {"TXS", 0x9A, 0x0100},
  {"TYA", 0x98, 0x0100},
  {"WAI", 0xCB, 0x0100},
  {"ADC", 0x61, 0x0EFE},
  {"AND", 0x21, 0x0EFE},
  {"CMP", 0xC1, 0x0EFE},
  {"EOR", 0x41, 0x0EFE},
  {"LDA", 0xA1, 0x0EFE},
  {"ORA", 0x01, 0x0EFE},
  {"SBC", 0xE1, 0x0EFE},
  {"STA", 0x81, 0x0EFE},
  {"ASL", 0x02, 0x007D},
  {"DEC", 0xC2, 0x007D},
  {"INC", 0xE2, 0x007D},
  {"LSR", 0x42, 0x007D},
  {"ROL", 0x22, 0x007D},
  {"ROR", 0x62, 0x007D},
  {"BIT", 0x20, 0x006E},
  {"CPX", 0xE0, 0x0026},
  {"CPY", 0xC0, 0x0026},
  {"LDY", 0xA0, 0x006E},
  {"BIT", 0x20, 0x006C},
  {"STY", 0x80, 0x002C},
  {"STZ", 0x60, 0x006C},
  {"TRB", 0x10, 0x0024},
  {"TSB", 0x00, 0x0024},
  {"LDX", 0xA2, 0x00A6},
  {"STX", 0x82, 0x00A6},
  {"JMP", 0x4C, 0x0620},
  {"JSR", 0x14, 0x0020}, 
  {"BCC", 0x90, 0x1000},
  {"BCS", 0xB0, 0x1000},
  {"BEQ", 0xF0, 0x1000},
  {"BMI", 0x30, 0x1000},
  {"BNE", 0xD0, 0x1000},
  {"BPL", 0x10, 0x1000},
  {"BRA", 0x80, 0x1000},
  {"BVC", 0x50, 0x1000},
  {"BVS", 0x70, 0x1000},
  {"", 0, 0}
};

struct opf {unsigned char token, opmod, opcode;};

struct opf opfix[] = {
  {0x20, 0x08, 0x89},
  {0xE0, 0x08, 0xE0}, 
  {0xC0, 0x08, 0xC0}, 
  {0xA0, 0x08, 0xA0}, 
  {0xA2, 0x08, 0xA2}, 
  {0xC2, 0x08, 0x3A},
  {0xE2, 0x08, 0x1A},  
  {0x60, 0x0C, 0x9C},  
  {0x60, 0x1C, 0x9E},  
  {0xA2, 0x18, 0xBE},
  {0x82, 0x18, 0xBC},
  {0x4C, 0x0C, 0x4C},  
  {0x4C, 0x11, 0x6C},  
  {0x4C, 0x00, 0x7C},  
  {0,0,0}
};