string LR35902::disassemble(uint16 pc) {
  char output[80];
  memset(output, ' ', sizeof output);
  output[79] = 0;

  string opcode = disassemble_opcode(pc);
  string registers = {
    " AF:", hex(r[AF], 4L),
    " BC:", hex(r[BC], 4L),
    " DE:", hex(r[DE], 4L),
    " HL:", hex(r[HL], 4L),
    " SP:", hex(r[SP], 4L)
  };

  memcpy(output +   0, hex(pc, 4L).data(), 4);
  memcpy(output +   6, opcode.data(), opcode.length());
  memcpy(output +  23, registers.data(), registers.length());
  output[63] = 0;
  return output;
}

string LR35902::disassemble_opcode(uint16 pc) {
  uint8 opcode = debugger_read(pc);
  uint8 p0 = debugger_read(pc + 1);
  uint8 p1 = debugger_read(pc + 2);
  uint8 p2 = debugger_read(pc + 3);

  switch(opcode) {
    case 0x00: return { "nop" };
    case 0x01: return { "ld   bc,$", hex(p1, 2L), hex(p0, 2L) };
    case 0x02: return { "ld   (bc),a" };
    case 0x03: return { "inc  bc" };
    case 0x04: return { "inc  b" };
    case 0x05: return { "dec  b" };
    case 0x06: return { "ld   b,$", hex(p0, 2L) };
    case 0x07: return { "rlc  a" };
    case 0x08: return { "ld   ($", hex(p1, 2L), hex(p0, 2L), "),sp" };
    case 0x09: return { "add  hl,bc" };
    case 0x0a: return { "ld   a,(bc)" };
    case 0x0b: return { "dec  bc" };
    case 0x0c: return { "inc  c" };
    case 0x0d: return { "dec  c" };
    case 0x0e: return { "ld   c,$", hex(p0, 2L) };
    case 0x0f: return { "rrc  a" };
    case 0x10: return { "stop" };
    case 0x11: return { "ld   de,$", hex(p1, 2L), hex(p0, 2L) };
    case 0x12: return { "ld   (de),a" };
    case 0x13: return { "inc  de" };
    case 0x14: return { "inc  d" };
    case 0x15: return { "dec  d" };
    case 0x16: return { "ld   d,$", hex(p0, 2L) };
    case 0x17: return { "rl   a" };
    case 0x18: return { "jr   $", hex(r[PC] + 2 + (int8)p0, 4L) };
    case 0x19: return { "add  hl,de" };
    case 0x1a: return { "ld   a,(de)" };
    case 0x1b: return { "dec  de" };
    case 0x1c: return { "inc  e" };
    case 0x1d: return { "dec  e" };
    case 0x1e: return { "ld   e,$", hex(p0, 2L) };
    case 0x1f: return { "rr   a" };
    case 0x20: return { "jr   nz,$", hex(r[PC] + 2 + (int8)p0, 4L) };
    case 0x21: return { "ld   hl,$", hex(p1, 2L), hex(p0, 2L) };
    case 0x22: return { "ldi  (hl),a" };
    case 0x23: return { "inc  hl" };
    case 0x24: return { "inc  h" };
    case 0x25: return { "dec  h" };
    case 0x26: return { "ld   h,$", hex(p0, 2L) };
    case 0x27: return { "daa" };
    case 0x28: return { "jr   z,$", hex(r[PC] + 2 + (int8)p0, 4L) };
    case 0x29: return { "add  hl,hl" };
    case 0x2a: return { "ldi  a,(hl)" };
    case 0x2b: return { "dec  hl" };
    case 0x2c: return { "inc  l" };
    case 0x2d: return { "dec  l" };
    case 0x2e: return { "ld   l,$", hex(p0, 2L) };
    case 0x2f: return { "cpl" };
    case 0x30: return { "jr   nc,$", hex(r[PC] + 2 + (int8)p0, 4L) };
    case 0x31: return { "ld   sp,$", hex(p1, 2L), hex(p0, 2L) };
    case 0x32: return { "ldd  (hl),a" };
    case 0x33: return { "inc  sp" };
    case 0x34: return { "inc  (hl)" };
    case 0x35: return { "dec  (hl)" };
    case 0x36: return { "ld   (hl),$", hex(p0, 2L) };
    case 0x37: return { "scf" };
    case 0x38: return { "jr   c,$", hex(r[PC] + 2 + (int8)p0, 4L) };
    case 0x39: return { "add  hl,sp" };
    case 0x3a: return { "ldd  a,(hl)" };
    case 0x3b: return { "dec  sp" };
    case 0x3c: return { "inc  a" };
    case 0x3d: return { "dec  a" };
    case 0x3e: return { "ld   a,$", hex(p0, 2L) };
    case 0x3f: return { "ccf" };
    case 0x40: return { "ld   b,b" };
    case 0x41: return { "ld   b,c" };
    case 0x42: return { "ld   b,d" };
    case 0x43: return { "ld   b,e" };
    case 0x44: return { "ld   b,h" };
    case 0x45: return { "ld   b,l" };
    case 0x46: return { "ld   b,(hl)" };
    case 0x47: return { "ld   b,a" };
    case 0x48: return { "ld   c,b" };
    case 0x49: return { "ld   c,c" };
    case 0x4a: return { "ld   c,d" };
    case 0x4b: return { "ld   c,e" };
    case 0x4c: return { "ld   c,h" };
    case 0x4d: return { "ld   c,l" };
    case 0x4e: return { "ld   c,(hl)" };
    case 0x4f: return { "ld   c,a" };
    case 0x50: return { "ld   d,b" };
    case 0x51: return { "ld   d,c" };
    case 0x52: return { "ld   d,d" };
    case 0x53: return { "ld   d,e" };
    case 0x54: return { "ld   d,h" };
    case 0x55: return { "ld   d,l" };
    case 0x56: return { "ld   d,(hl)" };
    case 0x57: return { "ld   d,a" };
    case 0x58: return { "ld   e,b" };
    case 0x59: return { "ld   e,c" };
    case 0x5a: return { "ld   e,d" };
    case 0x5b: return { "ld   e,e" };
    case 0x5c: return { "ld   e,h" };
    case 0x5d: return { "ld   e,l" };
    case 0x5e: return { "ld   e,(hl)" };
    case 0x5f: return { "ld   e,a" };
    case 0x60: return { "ld   h,b" };
    case 0x61: return { "ld   h,c" };
    case 0x62: return { "ld   h,d" };
    case 0x63: return { "ld   h,e" };
    case 0x64: return { "ld   h,h" };
    case 0x65: return { "ld   h,l" };
    case 0x66: return { "ld   h,(hl)" };
    case 0x67: return { "ld   h,a" };
    case 0x68: return { "ld   l,b" };
    case 0x69: return { "ld   l,c" };
    case 0x6a: return { "ld   l,d" };
    case 0x6b: return { "ld   l,e" };
    case 0x6c: return { "ld   l,h" };
    case 0x6d: return { "ld   l,l" };
    case 0x6e: return { "ld   l,(hl)" };
    case 0x6f: return { "ld   l,a" };
    case 0x70: return { "ld   (hl),b" };
    case 0x71: return { "ld   (hl),c" };
    case 0x72: return { "ld   (hl),d" };
    case 0x73: return { "ld   (hl),e" };
    case 0x74: return { "ld   (hl),h" };
    case 0x75: return { "ld   (hl),l" };
    case 0x76: return { "halt" };
    case 0x77: return { "ld   (hl),a" };
    case 0x78: return { "ld   a,b" };
    case 0x79: return { "ld   a,c" };
    case 0x7a: return { "ld   a,d" };
    case 0x7b: return { "ld   a,e" };
    case 0x7c: return { "ld   a,h" };
    case 0x7d: return { "ld   a,l" };
    case 0x7e: return { "ld   a,(hl)" };
    case 0x7f: return { "ld   a,a" };
    case 0x80: return { "add  a,b" };
    case 0x81: return { "add  a,c" };
    case 0x82: return { "add  a,d" };
    case 0x83: return { "add  a,e" };
    case 0x84: return { "add  a,h" };
    case 0x85: return { "add  a,l" };
    case 0x86: return { "add  a,(hl)" };
    case 0x87: return { "add  a,a" };
    case 0x88: return { "adc  a,b" };
    case 0x89: return { "adc  a,c" };
    case 0x8a: return { "adc  a,d" };
    case 0x8b: return { "adc  a,e" };
    case 0x8c: return { "adc  a,h" };
    case 0x8d: return { "adc  a,l" };
    case 0x8e: return { "adc  a,(hl)" };
    case 0x8f: return { "adc  a,a" };
    case 0x90: return { "sub  a,b" };
    case 0x91: return { "sub  a,c" };
    case 0x92: return { "sub  a,d" };
    case 0x93: return { "sub  a,e" };
    case 0x94: return { "sub  a,h" };
    case 0x95: return { "sub  a,l" };
    case 0x96: return { "sub  a,(hl)" };
    case 0x97: return { "sub  a,a" };
    case 0x98: return { "sbc  a,b" };
    case 0x99: return { "sbc  a,c" };
    case 0x9a: return { "sbc  a,d" };
    case 0x9b: return { "sbc  a,e" };
    case 0x9c: return { "sbc  a,h" };
    case 0x9d: return { "sbc  a,l" };
    case 0x9e: return { "sbc  a,(hl)" };
    case 0x9f: return { "sbc  a,a" };
    case 0xa0: return { "and  a,b" };
    case 0xa1: return { "and  a,c" };
    case 0xa2: return { "and  a,d" };
    case 0xa3: return { "and  a,e" };
    case 0xa4: return { "and  a,h" };
    case 0xa5: return { "and  a,l" };
    case 0xa6: return { "and  a,(hl)" };
    case 0xa7: return { "and  a,a" };
    case 0xa8: return { "xor  a,b" };
    case 0xa9: return { "xor  a,c" };
    case 0xaa: return { "xor  a,d" };
    case 0xab: return { "xor  a,e" };
    case 0xac: return { "xor  a,h" };
    case 0xad: return { "xor  a,l" };
    case 0xae: return { "xor  a,(hl)" };
    case 0xaf: return { "xor  a,a" };
    case 0xb0: return { "or   a,b" };
    case 0xb1: return { "or   a,c" };
    case 0xb2: return { "or   a,d" };
    case 0xb3: return { "or   a,e" };
    case 0xb4: return { "or   a,h" };
    case 0xb5: return { "or   a,l" };
    case 0xb6: return { "or   a,(hl)" };
    case 0xb7: return { "or   a,a" };
    case 0xb8: return { "cp   a,b" };
    case 0xb9: return { "cp   a,c" };
    case 0xba: return { "cp   a,d" };
    case 0xbb: return { "cp   a,e" };
    case 0xbc: return { "cp   a,h" };
    case 0xbd: return { "cp   a,l" };
    case 0xbe: return { "cp   a,(hl)" };
    case 0xbf: return { "cp   a,a" };
    case 0xc0: return { "ret  nz" };
    case 0xc1: return { "pop  bc" };
    case 0xc2: return { "jp   nz,$", hex(p1, 2L), hex(p0, 2L) };
    case 0xc3: return { "jp   $", hex(p1, 2L), hex(p0, 2L) };
    case 0xc4: return { "call nz,$", hex(p1, 2L), hex(p0, 2L) };
    case 0xc5: return { "push bc" };
    case 0xc6: return { "add  a,$", hex(p0, 2L) };
    case 0xc7: return { "rst  $0000" };
    case 0xc8: return { "ret  z" };
    case 0xc9: return { "ret" };
    case 0xca: return { "jp   z,$", hex(p1, 2L), hex(p0, 2L) };
    case 0xcb: return disassemble_opcode_cb(pc + 1);
    case 0xcc: return { "call z,$", hex(p1, 2L), hex(p0, 2L) };
    case 0xcd: return { "call $", hex(p1, 2L), hex(p0, 2L) };
    case 0xce: return { "adc  a,$", hex(p0, 2L) };
    case 0xcf: return { "rst  $0008" };
    case 0xd0: return { "ret  nc" };
    case 0xd1: return { "pop  de" };
    case 0xd2: return { "jp   nc,$", hex(p1, 2L), hex(p0, 2L) };
    case 0xd3: return { "xx" };
    case 0xd4: return { "call nc,$", hex(p1, 2L), hex(p0, 2L) };
    case 0xd5: return { "push de" };
    case 0xd6: return { "sub  a,$", hex(p0, 2L) };
    case 0xd7: return { "rst  $0010" };
    case 0xd8: return { "ret  c" };
    case 0xd9: return { "reti" };
    case 0xda: return { "jp   c,$", hex(p1, 2L), hex(p0, 2L) };
    case 0xdb: return { "xx" };
    case 0xdc: return { "call c,$", hex(p1, 2L), hex(p0, 2L) };
    case 0xdd: return { "xx" };
    case 0xde: return { "sbc  a,$", hex(p0, 2L) };
    case 0xdf: return { "rst  $0018" };
    case 0xe0: return { "ld   ($ff", hex(p0, 2L), "),a" };
    case 0xe1: return { "pop  hl" };
    case 0xe2: return { "ld   ($ff00+c),a" };
    case 0xe3: return { "xx" };
    case 0xe4: return { "xx" };
    case 0xe5: return { "push hl" };
    case 0xe6: return { "and  a,$", hex(p0, 2L) };
    case 0xe7: return { "rst  $0020" };
    case 0xe8: return { "add  sp,$", hex((int8)p0, 4L) };
    case 0xe9: return { "jp   hl" };
    case 0xea: return { "ld   ($", hex(p1, 2L), hex(p0, 2L), "),a" };
    case 0xeb: return { "xx" };
    case 0xec: return { "xx" };
    case 0xed: return { "xx" };
    case 0xee: return { "xor  a,$", hex(p0, 2L) };
    case 0xef: return { "rst  $0028" };
    case 0xf0: return { "ld   a,($ff", hex(p0, 2L), ")" };
    case 0xf1: return { "pop  af" };
    case 0xf2: return { "ld   a,($ff00+c)" };
    case 0xf3: return { "di" };
    case 0xf4: return { "xx" };
    case 0xf5: return { "push af" };
    case 0xf6: return { "or  a,$", hex(p0, 2L) };
    case 0xf7: return { "rst  $0030" };
    case 0xf8: return { "ld   hl,sp+$", hex((int8)p0, 4L) };
    case 0xf9: return { "ld   sp,hl" };
    case 0xfa: return { "ld   a,($", hex(p1, 2L), hex(p0, 2L), ")" };
    case 0xfb: return { "ei" };
    case 0xfc: return { "xx" };
    case 0xfd: return { "xx" };
    case 0xfe: return { "cp   a,$", hex(p0, 2L) };
    case 0xff: return { "rst  $0038" };
  }

  return "";
}

string LR35902::disassemble_opcode_cb(uint16 pc) {
  uint8 opcode = debugger_read(pc);
  uint8 p0 = debugger_read(pc + 1);
  uint8 p1 = debugger_read(pc + 2);
  uint8 p2 = debugger_read(pc + 3);

  switch(opcode) {
    case 0x00: return { "rlc  b" };
    case 0x01: return { "rlc  c" };
    case 0x02: return { "rlc  d" };
    case 0x03: return { "rlc  e" };
    case 0x04: return { "rlc  h" };
    case 0x05: return { "rlc  l" };
    case 0x06: return { "rlc  (hl)" };
    case 0x07: return { "rlc  a" };
    case 0x08: return { "rrc  b" };
    case 0x09: return { "rrc  c" };
    case 0x0a: return { "rrc  d" };
    case 0x0b: return { "rrc  e" };
    case 0x0c: return { "rrc  h" };
    case 0x0d: return { "rrc  l" };
    case 0x0e: return { "rrc  (hl)" };
    case 0x0f: return { "rrc  a" };
    case 0x10: return { "rl   b" };
    case 0x11: return { "rl   c" };
    case 0x12: return { "rl   d" };
    case 0x13: return { "rl   e" };
    case 0x14: return { "rl   h" };
    case 0x15: return { "rl   l" };
    case 0x16: return { "rl   (hl)" };
    case 0x17: return { "rl   a" };
    case 0x18: return { "rr   b" };
    case 0x19: return { "rr   c" };
    case 0x1a: return { "rr   d" };
    case 0x1b: return { "rr   e" };
    case 0x1c: return { "rr   h" };
    case 0x1d: return { "rr   l" };
    case 0x1e: return { "rr   (hl)" };
    case 0x1f: return { "rr   a" };
    case 0x20: return { "sla  b" };
    case 0x21: return { "sla  c" };
    case 0x22: return { "sla  d" };
    case 0x23: return { "sla  e" };
    case 0x24: return { "sla  h" };
    case 0x25: return { "sla  l" };
    case 0x26: return { "sla  (hl)" };
    case 0x27: return { "sla  a" };
    case 0x28: return { "sra  b" };
    case 0x29: return { "sra  c" };
    case 0x2a: return { "sra  d" };
    case 0x2b: return { "sra  e" };
    case 0x2c: return { "sra  h" };
    case 0x2d: return { "sra  l" };
    case 0x2e: return { "sra  (hl)" };
    case 0x2f: return { "sra  a" };
    case 0x30: return { "swap b" };
    case 0x31: return { "swap c" };
    case 0x32: return { "swap d" };
    case 0x33: return { "swap e" };
    case 0x34: return { "swap h" };
    case 0x35: return { "swap l" };
    case 0x36: return { "swap (hl)" };
    case 0x37: return { "swap a" };
    case 0x38: return { "srl  b" };
    case 0x39: return { "srl  c" };
    case 0x3a: return { "srl  d" };
    case 0x3b: return { "srl  e" };
    case 0x3c: return { "srl  h" };
    case 0x3d: return { "srl  l" };
    case 0x3e: return { "srl  (hl)" };
    case 0x3f: return { "srl  a" };
    case 0x40: return { "bit  0,b" };
    case 0x41: return { "bit  0,c" };
    case 0x42: return { "bit  0,d" };
    case 0x43: return { "bit  0,e" };
    case 0x44: return { "bit  0,h" };
    case 0x45: return { "bit  0,l" };
    case 0x46: return { "bit  0,(hl)" };
    case 0x47: return { "bit  0,a" };
    case 0x48: return { "bit  1,b" };
    case 0x49: return { "bit  1,c" };
    case 0x4a: return { "bit  1,d" };
    case 0x4b: return { "bit  1,e" };
    case 0x4c: return { "bit  1,h" };
    case 0x4d: return { "bit  1,l" };
    case 0x4e: return { "bit  1,(hl)" };
    case 0x4f: return { "bit  1,a" };
    case 0x50: return { "bit  2,b" };
    case 0x51: return { "bit  2,c" };
    case 0x52: return { "bit  2,d" };
    case 0x53: return { "bit  2,e" };
    case 0x54: return { "bit  2,h" };
    case 0x55: return { "bit  2,l" };
    case 0x56: return { "bit  2,(hl)" };
    case 0x57: return { "bit  2,a" };
    case 0x58: return { "bit  3,b" };
    case 0x59: return { "bit  3,c" };
    case 0x5a: return { "bit  3,d" };
    case 0x5b: return { "bit  3,e" };
    case 0x5c: return { "bit  3,h" };
    case 0x5d: return { "bit  3,l" };
    case 0x5e: return { "bit  3,(hl)" };
    case 0x5f: return { "bit  3,a" };
    case 0x60: return { "bit  4,b" };
    case 0x61: return { "bit  4,c" };
    case 0x62: return { "bit  4,d" };
    case 0x63: return { "bit  4,e" };
    case 0x64: return { "bit  4,h" };
    case 0x65: return { "bit  4,l" };
    case 0x66: return { "bit  4,(hl)" };
    case 0x67: return { "bit  4,a" };
    case 0x68: return { "bit  5,b" };
    case 0x69: return { "bit  5,c" };
    case 0x6a: return { "bit  5,d" };
    case 0x6b: return { "bit  5,e" };
    case 0x6c: return { "bit  5,h" };
    case 0x6d: return { "bit  5,l" };
    case 0x6e: return { "bit  5,(hl)" };
    case 0x6f: return { "bit  5,a" };
    case 0x70: return { "bit  6,b" };
    case 0x71: return { "bit  6,c" };
    case 0x72: return { "bit  6,d" };
    case 0x73: return { "bit  6,e" };
    case 0x74: return { "bit  6,h" };
    case 0x75: return { "bit  6,l" };
    case 0x76: return { "bit  6,(hl)" };
    case 0x77: return { "bit  6,a" };
    case 0x78: return { "bit  7,b" };
    case 0x79: return { "bit  7,c" };
    case 0x7a: return { "bit  7,d" };
    case 0x7b: return { "bit  7,e" };
    case 0x7c: return { "bit  7,h" };
    case 0x7d: return { "bit  7,l" };
    case 0x7e: return { "bit  7,(hl)" };
    case 0x7f: return { "bit  7,a" };
    case 0x80: return { "res  0,b" };
    case 0x81: return { "res  0,c" };
    case 0x82: return { "res  0,d" };
    case 0x83: return { "res  0,e" };
    case 0x84: return { "res  0,h" };
    case 0x85: return { "res  0,l" };
    case 0x86: return { "res  0,(hl)" };
    case 0x87: return { "res  0,a" };
    case 0x88: return { "res  1,b" };
    case 0x89: return { "res  1,c" };
    case 0x8a: return { "res  1,d" };
    case 0x8b: return { "res  1,e" };
    case 0x8c: return { "res  1,h" };
    case 0x8d: return { "res  1,l" };
    case 0x8e: return { "res  1,(hl)" };
    case 0x8f: return { "res  1,a" };
    case 0x90: return { "res  2,b" };
    case 0x91: return { "res  2,c" };
    case 0x92: return { "res  2,d" };
    case 0x93: return { "res  2,e" };
    case 0x94: return { "res  2,h" };
    case 0x95: return { "res  2,l" };
    case 0x96: return { "res  2,(hl)" };
    case 0x97: return { "res  2,a" };
    case 0x98: return { "res  3,b" };
    case 0x99: return { "res  3,c" };
    case 0x9a: return { "res  3,d" };
    case 0x9b: return { "res  3,e" };
    case 0x9c: return { "res  3,h" };
    case 0x9d: return { "res  3,l" };
    case 0x9e: return { "res  3,(hl)" };
    case 0x9f: return { "res  3,a" };
    case 0xa0: return { "res  4,b" };
    case 0xa1: return { "res  4,c" };
    case 0xa2: return { "res  4,d" };
    case 0xa3: return { "res  4,e" };
    case 0xa4: return { "res  4,h" };
    case 0xa5: return { "res  4,l" };
    case 0xa6: return { "res  4,(hl)" };
    case 0xa7: return { "res  4,a" };
    case 0xa8: return { "res  5,b" };
    case 0xa9: return { "res  5,c" };
    case 0xaa: return { "res  5,d" };
    case 0xab: return { "res  5,e" };
    case 0xac: return { "res  5,h" };
    case 0xad: return { "res  5,l" };
    case 0xae: return { "res  5,(hl)" };
    case 0xaf: return { "res  5,a" };
    case 0xb0: return { "res  6,b" };
    case 0xb1: return { "res  6,c" };
    case 0xb2: return { "res  6,d" };
    case 0xb3: return { "res  6,e" };
    case 0xb4: return { "res  6,h" };
    case 0xb5: return { "res  6,l" };
    case 0xb6: return { "res  6,(hl)" };
    case 0xb7: return { "res  6,a" };
    case 0xb8: return { "res  7,b" };
    case 0xb9: return { "res  7,c" };
    case 0xba: return { "res  7,d" };
    case 0xbb: return { "res  7,e" };
    case 0xbc: return { "res  7,h" };
    case 0xbd: return { "res  7,l" };
    case 0xbe: return { "res  7,(hl)" };
    case 0xbf: return { "res  7,a" };
    case 0xc0: return { "set  0,b" };
    case 0xc1: return { "set  0,c" };
    case 0xc2: return { "set  0,d" };
    case 0xc3: return { "set  0,e" };
    case 0xc4: return { "set  0,h" };
    case 0xc5: return { "set  0,l" };
    case 0xc6: return { "set  0,(hl)" };
    case 0xc7: return { "set  0,a" };
    case 0xc8: return { "set  1,b" };
    case 0xc9: return { "set  1,c" };
    case 0xca: return { "set  1,d" };
    case 0xcb: return { "set  1,e" };
    case 0xcc: return { "set  1,h" };
    case 0xcd: return { "set  1,l" };
    case 0xce: return { "set  1,(hl)" };
    case 0xcf: return { "set  1,a" };
    case 0xd0: return { "set  2,b" };
    case 0xd1: return { "set  2,c" };
    case 0xd2: return { "set  2,d" };
    case 0xd3: return { "set  2,e" };
    case 0xd4: return { "set  2,h" };
    case 0xd5: return { "set  2,l" };
    case 0xd6: return { "set  2,(hl)" };
    case 0xd7: return { "set  2,a" };
    case 0xd8: return { "set  3,b" };
    case 0xd9: return { "set  3,c" };
    case 0xda: return { "set  3,d" };
    case 0xdb: return { "set  3,e" };
    case 0xdc: return { "set  3,h" };
    case 0xdd: return { "set  3,l" };
    case 0xde: return { "set  3,(hl)" };
    case 0xdf: return { "set  3,a" };
    case 0xe0: return { "set  4,b" };
    case 0xe1: return { "set  4,c" };
    case 0xe2: return { "set  4,d" };
    case 0xe3: return { "set  4,e" };
    case 0xe4: return { "set  4,h" };
    case 0xe5: return { "set  4,l" };
    case 0xe6: return { "set  4,(hl)" };
    case 0xe7: return { "set  4,a" };
    case 0xe8: return { "set  5,b" };
    case 0xe9: return { "set  5,c" };
    case 0xea: return { "set  5,d" };
    case 0xeb: return { "set  5,e" };
    case 0xec: return { "set  5,h" };
    case 0xed: return { "set  5,l" };
    case 0xee: return { "set  5,(hl)" };
    case 0xef: return { "set  5,a" };
    case 0xf0: return { "set  6,b" };
    case 0xf1: return { "set  6,c" };
    case 0xf2: return { "set  6,d" };
    case 0xf3: return { "set  6,e" };
    case 0xf4: return { "set  6,h" };
    case 0xf5: return { "set  6,l" };
    case 0xf6: return { "set  6,(hl)" };
    case 0xf7: return { "set  6,a" };
    case 0xf8: return { "set  7,b" };
    case 0xf9: return { "set  7,c" };
    case 0xfa: return { "set  7,d" };
    case 0xfb: return { "set  7,e" };
    case 0xfc: return { "set  7,h" };
    case 0xfd: return { "set  7,l" };
    case 0xfe: return { "set  7,(hl)" };
    case 0xff: return { "set  7,a" };
  }

  return "";
}
