sys/src/games/gb/disasm.c

   1 #include <u.h>
   2 #include <libc.h>
   3 #include <thread.h>
   4 #include <draw.h>
   5 #include "dat.h"
   6 #include "fns.h"
   7
   8 static char *opcodes[256] = {
   9         [0x00] "NOP",
  10         [0x01] "LD BC,%.4x",
  11         [0x02] "LD (BC),A",
  12         [0x03] "INC BC",
  13         [0x04] "INC B",
  14         [0x05] "DEC B",
  15         [0x06] "LD B,%.2x",
  16         [0x07] "RLCA ",
  17         [0x08] "LD (%.4x),SP",
  18         [0x09] "ADD HL,BC",
  19         [0x0A] "LD A,(BC)",
  20         [0x0B] "DEC BC",
  21         [0x0C] "INC C",
  22         [0x0D] "DEC C",
  23         [0x0E] "LD C,%.2x",
  24         [0x0F] "RRCA ",
  25         [0x10] "STOP",
  26         [0x11] "LD DE,%.4x",
  27         [0x12] "LD (DE),A",
  28         [0x13] "INC DE",
  29         [0x14] "INC D",
  30         [0x15] "DEC D",
  31         [0x16] "LD D,%.2x",
  32         [0x17] "RLA ",
  33         [0x18] "JR %.2x",
  34         [0x19] "ADD HL,DE",
  35         [0x1A] "LD A,(DE)",
  36         [0x1B] "DEC DE",
  37         [0x1C] "INC E",
  38         [0x1D] "DEC E",
  39         [0x1E] "LD E,%.2x",
  40         [0x1F] "RRA ",
  41         [0x20] "JR NZ,%.2x",
  42         [0x21] "LD HL,%.4x",
  43         [0x22] "LD (HLI),A",
  44         [0x23] "INC HL",
  45         [0x24] "INC H",
  46         [0x25] "DEC H",
  47         [0x26] "LD H,%.2x",
  48         [0x27] "DAA ",
  49         [0x28] "JR Z,%.2x",
  50         [0x29] "ADD HL,HL",
  51         [0x2A] "LD A,(HLI)",
  52         [0x2B] "DEC HL",
  53         [0x2C] "INC L",
  54         [0x2D] "DEC L",
  55         [0x2E] "LD L,%.2x",
  56         [0x2F] "CPL ",
  57         [0x30] "JR NC,%.2x",
  58         [0x31] "LD SP,%.4x",
  59         [0x32] "LD (HLD),A",
  60         [0x33] "INC SP",
  61         [0x34] "INC (HL)",
  62         [0x35] "DEC (HL)",
  63         [0x36] "LD (HL),%.2x",
  64         [0x37] "SCF ",
  65         [0x38] "JR C,%.2x",
  66         [0x39] "ADD HL,SP",
  67         [0x3A] "LD A,(HLD)",
  68         [0x3B] "DEC SP",
  69         [0x3C] "INC A",
  70         [0x3D] "DEC A",
  71         [0x3E] "LD A,%.2x",
  72         [0x3F] "CCF ",
  73         [0x40] "LD B,B",
  74         [0x41] "LD B,C",
  75         [0x42] "LD B,D",
  76         [0x43] "LD B,E",
  77         [0x44] "LD B,H",
  78         [0x45] "LD B,L",
  79         [0x46] "LD B,(HL)",
  80         [0x47] "LD B,A",
  81         [0x48] "LD C,B",
  82         [0x49] "LD C,C",
  83         [0x4A] "LD C,D",
  84         [0x4B] "LD C,E",
  85         [0x4C] "LD C,H",
  86         [0x4D] "LD C,L",
  87         [0x4E] "LD C,(HL)",
  88         [0x4F] "LD C,A",
  89         [0x50] "LD D,B",
  90         [0x51] "LD D,C",
  91         [0x52] "LD D,D",
  92         [0x53] "LD D,E",
  93         [0x54] "LD D,H",
  94         [0x55] "LD D,L",
  95         [0x56] "LD D,(HL)",
  96         [0x57] "LD D,A",
  97         [0x58] "LD E,B",
  98         [0x59] "LD E,C",
  99         [0x5A] "LD E,D",
 100         [0x5B] "LD E,E",
 101         [0x5C] "LD E,H",
 102         [0x5D] "LD E,L",
 103         [0x5E] "LD E,(HL)",
 104         [0x5F] "LD E,A",
 105         [0x60] "LD H,B",
 106         [0x61] "LD H,C",
 107         [0x62] "LD H,D",
 108         [0x63] "LD H,E",
 109         [0x64] "LD H,H",
 110         [0x65] "LD H,L",
 111         [0x66] "LD H,(HL)",
 112         [0x67] "LD H,A",
 113         [0x68] "LD L,B",
 114         [0x69] "LD L,C",
 115         [0x6A] "LD L,D",
 116         [0x6B] "LD L,E",
 117         [0x6C] "LD L,H",
 118         [0x6D] "LD L,L",
 119         [0x6E] "LD L,(HL)",
 120         [0x6F] "LD L,A",
 121         [0x70] "LD (HL),B",
 122         [0x71] "LD (HL),C",
 123         [0x72] "LD (HL),D",
 124         [0x73] "LD (HL),E",
 125         [0x74] "LD (HL),H",
 126         [0x75] "LD (HL),L",
 127         [0x76] "HALT ",
 128         [0x77] "LD (HL),A",
 129         [0x78] "LD A,B",
 130         [0x79] "LD A,C",
 131         [0x7A] "LD A,D",
 132         [0x7B] "LD A,E",
 133         [0x7C] "LD A,H",
 134         [0x7D] "LD A,L",
 135         [0x7E] "LD A,(HL)",
 136         [0x7F] "LD A,A",
 137         [0x80] "ADD A,B",
 138         [0x81] "ADD A,C",
 139         [0x82] "ADD A,D",
 140         [0x83] "ADD A,E",
 141         [0x84] "ADD A,H",
 142         [0x85] "ADD A,L",
 143         [0x86] "ADD A,(HL)",
 144         [0x87] "ADD A,A",
 145         [0x88] "ADC A,B",
 146         [0x89] "ADC A,C",
 147         [0x8A] "ADC A,D",
 148         [0x8B] "ADC A,E",
 149         [0x8C] "ADC A,H",
 150         [0x8D] "ADC A,L",
 151         [0x8E] "ADC A,(HL)",
 152         [0x8F] "ADC A,A",
 153         [0x90] "SUB B",
 154         [0x91] "SUB C",
 155         [0x92] "SUB D",
 156         [0x93] "SUB E",
 157         [0x94] "SUB H",
 158         [0x95] "SUB L",
 159         [0x96] "SUB (HL)",
 160         [0x97] "SUB A",
 161         [0x98] "SBC B",
 162         [0x99] "SBC C",
 163         [0x9A] "SBC D",
 164         [0x9B] "SBC E",
 165         [0x9C] "SBC H",
 166         [0x9D] "SBC L",
 167         [0x9E] "SBC (HL)",
 168         [0x9F] "SBC A",
 169         [0xA0] "AND B",
 170         [0xA1] "AND C",
 171         [0xA2] "AND D",
 172         [0xA3] "AND E",
 173         [0xA4] "AND H",
 174         [0xA5] "AND L",
 175         [0xA6] "AND (HL)",
 176         [0xA7] "AND A",
 177         [0xA8] "XOR B",
 178         [0xA9] "XOR C",
 179         [0xAA] "XOR D",
 180         [0xAB] "XOR E",
 181         [0xAC] "XOR H",
 182         [0xAD] "XOR L",
 183         [0xAE] "XOR (HL)",
 184         [0xAF] "XOR A",
 185         [0xB0] "OR B",
 186         [0xB1] "OR C",
 187         [0xB2] "OR D",
 188         [0xB3] "OR E",
 189         [0xB4] "OR H",
 190         [0xB5] "OR L",
 191         [0xB6] "OR (HL)",
 192         [0xB7] "OR A",
 193         [0xB8] "CP B",
 194         [0xB9] "CP C",
 195         [0xBA] "CP D",
 196         [0xBB] "CP E",
 197         [0xBC] "CP H",
 198         [0xBD] "CP L",
 199         [0xBE] "CP (HL)",
 200         [0xBF] "CP A",
 201         [0xC0] "RET NZ",
 202         [0xC1] "POP BC",
 203         [0xC2] "JP NZ,%.4x",
 204         [0xC3] "JP %.4x",
 205         [0xC4] "CALL NZ,%.4x",
 206         [0xC5] "PUSH BC",
 207         [0xC6] "ADD A,%.2x",
 208         [0xC7] "RST 00H",
 209         [0xC8] "RET Z",
 210         [0xC9] "RET ",
 211         [0xCA] "JP Z,%.4x",
 212         [0xCB] "#CB ",
 213         [0xCC] "CALL Z,%.4x",
 214         [0xCD] "CALL %.4x",
 215         [0xCE] "ADC A,%.2x",
 216         [0xCF] "RST 08H",
 217         [0xD0] "RET NC",
 218         [0xD1] "POP DE",
 219         [0xD2] "JP NC,%.4x",
 220         [0xD3] "---",
 221         [0xD4] "CALL NC,%.4x",
 222         [0xD5] "PUSH DE",
 223         [0xD6] "SUB %.2x",
 224         [0xD7] "RST 10H",
 225         [0xD8] "RET C",
 226         [0xD9] "RETI",
 227         [0xDA] "JP C,%.4x",
 228         [0xDB] "---",
 229         [0xDC] "CALL C,%.4x",
 230         [0xDD] "---",
 231         [0xDE] "SBC A,%.2x",
 232         [0xDF] "RST 18H",
 233         [0xE0] "LD (ff%.2x),A",
 234         [0xE1] "POP HL",
 235         [0xE2] "LD (C),A",
 236         [0xE3] "---",
 237         [0xE4] "---",
 238         [0xE5] "PUSH HL",
 239         [0xE6] "AND %.2x",
 240         [0xE7] "RST 20H",
 241         [0xE8] "ADD SP,%.2x",
 242         [0xE9] "JP (HL)",
 243         [0xEA] "LD (%.4x),A",
 244         [0xEB] "---",
 245         [0xEC] "---",
 246         [0xED] "#ED ",
 247         [0xEE] "XOR %.2x",
 248         [0xEF] "RST 28H",
 249         [0xF0] "LD A,(ff%.2x)",
 250         [0xF1] "POP AF",
 251         [0xF2] "LD A, (C)",
 252         [0xF3] "DI ",
 253         [0xF4] "---",
 254         [0xF5] "PUSH AF",
 255         [0xF6] "OR %.2x",
 256         [0xF7] "RST 30H",
 257         [0xF8] "LDHL SP,%.2x",
 258         [0xF9] "LD SP,HL",
 259         [0xFA] "LD A,(%.4x)",
 260         [0xFB] "EI ",
 261         [0xFC] "---",
 262         [0xFD] "---",
 263         [0xFE] "CP %.2x",
 264         [0xFF] "RST 38H",
 265 };
 266
 267 static int operands[256] = {
 268         [0x00] 0,
 269         [0x01] 2,
 270         [0x02] 0,
 271         [0x03] 0,
 272         [0x04] 0,
 273         [0x05] 0,
 274         [0x06] 1,
 275         [0x07] 0,
 276         [0x08] 0,
 277         [0x09] 0,
 278         [0x0A] 0,
 279         [0x0B] 0,
 280         [0x0C] 0,
 281         [0x0D] 0,
 282         [0x0E] 1,
 283         [0x0F] 0,
 284         [0x10] 0,
 285         [0x11] 2,
 286         [0x12] 0,
 287         [0x13] 0,
 288         [0x14] 0,
 289         [0x15] 0,
 290         [0x16] 1,
 291         [0x17] 0,
 292         [0x18] 1,
 293         [0x19] 0,
 294         [0x1A] 0,
 295         [0x1B] 0,
 296         [0x1C] 0,
 297         [0x1D] 0,
 298         [0x1E] 1,
 299         [0x1F] 0,
 300         [0x20] 1,
 301         [0x21] 2,
 302         [0x22] 0,
 303         [0x23] 0,
 304         [0x24] 0,
 305         [0x25] 0,
 306         [0x26] 1,
 307         [0x27] 0,
 308         [0x28] 1,
 309         [0x29] 0,
 310         [0x2A] 0,
 311         [0x2B] 0,
 312         [0x2C] 0,
 313         [0x2D] 0,
 314         [0x2E] 1,
 315         [0x2F] 0,
 316         [0x30] 1,
 317         [0x31] 2,
 318         [0x32] 0,
 319         [0x33] 0,
 320         [0x34] 0,
 321         [0x35] 0,
 322         [0x36] 1,
 323         [0x37] 0,
 324         [0x38] 1,
 325         [0x39] 0,
 326         [0x3A] 2,
 327         [0x3B] 0,
 328         [0x3C] 0,
 329         [0x3D] 0,
 330         [0x3E] 1,
 331         [0x3F] 0,
 332         [0x40] 0,
 333         [0x41] 0,
 334         [0x42] 0,
 335         [0x43] 0,
 336         [0x44] 0,
 337         [0x45] 0,
 338         [0x46] 0,
 339         [0x47] 0,
 340         [0x48] 0,
 341         [0x49] 0,
 342         [0x4A] 0,
 343         [0x4B] 0,
 344         [0x4C] 0,
 345         [0x4D] 0,
 346         [0x4E] 0,
 347         [0x4F] 0,
 348         [0x50] 0,
 349         [0x51] 0,
 350         [0x52] 0,
 351         [0x53] 0,
 352         [0x54] 0,
 353         [0x55] 0,
 354         [0x56] 0,
 355         [0x57] 0,
 356         [0x58] 0,
 357         [0x59] 0,
 358         [0x5A] 0,
 359         [0x5B] 0,
 360         [0x5C] 0,
 361         [0x5D] 0,
 362         [0x5E] 0,
 363         [0x5F] 0,
 364         [0x60] 0,
 365         [0x61] 0,
 366         [0x62] 0,
 367         [0x63] 0,
 368         [0x64] 0,
 369         [0x65] 0,
 370         [0x66] 0,
 371         [0x67] 0,
 372         [0x68] 0,
 373         [0x69] 0,
 374         [0x6A] 0,
 375         [0x6B] 0,
 376         [0x6C] 0,
 377         [0x6D] 0,
 378         [0x6E] 0,
 379         [0x6F] 0,
 380         [0x70] 0,
 381         [0x71] 0,
 382         [0x72] 0,
 383         [0x73] 0,
 384         [0x74] 0,
 385         [0x75] 0,
 386         [0x76] 0,
 387         [0x77] 0,
 388         [0x78] 0,
 389         [0x79] 0,
 390         [0x7A] 0,
 391         [0x7B] 0,
 392         [0x7C] 0,
 393         [0x7D] 0,
 394         [0x7E] 0,
 395         [0x7F] 0,
 396         [0x80] 0,
 397         [0x81] 0,
 398         [0x82] 0,
 399         [0x83] 0,
 400         [0x84] 0,
 401         [0x85] 0,
 402         [0x86] 0,
 403         [0x87] 0,
 404         [0x88] 0,
 405         [0x89] 0,
 406         [0x8A] 0,
 407         [0x8B] 0,
 408         [0x8C] 0,
 409         [0x8D] 0,
 410         [0x8E] 0,
 411         [0x8F] 0,
 412         [0x90] 0,
 413         [0x91] 0,
 414         [0x92] 0,
 415         [0x93] 0,
 416         [0x94] 0,
 417         [0x95] 0,
 418         [0x96] 0,
 419         [0x97] 0,
 420         [0x98] 0,
 421         [0x99] 0,
 422         [0x9A] 0,
 423         [0x9B] 0,
 424         [0x9C] 0,
 425         [0x9D] 0,
 426         [0x9E] 0,
 427         [0x9F] 0,
 428         [0xA0] 0,
 429         [0xA1] 0,
 430         [0xA2] 0,
 431         [0xA3] 0,
 432         [0xA4] 0,
 433         [0xA5] 0,
 434         [0xA6] 0,
 435         [0xA7] 0,
 436         [0xA8] 0,
 437         [0xA9] 0,
 438         [0xAA] 0,
 439         [0xAB] 0,
 440         [0xAC] 0,
 441         [0xAD] 0,
 442         [0xAE] 0,
 443         [0xAF] 0,
 444         [0xB0] 0,
 445         [0xB1] 0,
 446         [0xB2] 0,
 447         [0xB3] 0,
 448         [0xB4] 0,
 449         [0xB5] 0,
 450         [0xB6] 0,
 451         [0xB7] 0,
 452         [0xB8] 0,
 453         [0xB9] 0,
 454         [0xBA] 0,
 455         [0xBB] 0,
 456         [0xBC] 0,
 457         [0xBD] 0,
 458         [0xBE] 0,
 459         [0xBF] 0,
 460         [0xC0] 0,
 461         [0xC1] 0,
 462         [0xC2] 2,
 463         [0xC3] 2,
 464         [0xC4] 2,
 465         [0xC5] 0,
 466         [0xC6] 1,
 467         [0xC7] 0,
 468         [0xC8] 0,
 469         [0xC9] 0,
 470         [0xCA] 2,
 471         [0xCB] 0,
 472         [0xCC] 2,
 473         [0xCD] 2,
 474         [0xCE] 1,
 475         [0xCF] 0,
 476         [0xD0] 0,
 477         [0xD1] 0,
 478         [0xD2] 2,
 479         [0xD3] 1,
 480         [0xD4] 2,
 481         [0xD5] 0,
 482         [0xD6] 1,
 483         [0xD7] 0,
 484         [0xD8] 0,
 485         [0xD9] 0,
 486         [0xDA] 2,
 487         [0xDB] 1,
 488         [0xDC] 2,
 489         [0xDD] 0,
 490         [0xDE] 1,
 491         [0xDF] 0,
 492         [0xE0] 1,
 493         [0xE1] 0,
 494         [0xE2] 0,
 495         [0xE3] 0,
 496         [0xE4] 2,
 497         [0xE5] 0,
 498         [0xE6] 1,
 499         [0xE7] 0,
 500         [0xE8] 1,
 501         [0xE9] 0,
 502         [0xEA] 2,
 503         [0xEB] 0,
 504         [0xEC] 2,
 505         [0xED] 0,
 506         [0xEE] 1,
 507         [0xEF] 0,
 508         [0xF0] 1,
 509         [0xF1] 0,
 510         [0xF2] 0,
 511         [0xF3] 0,
 512         [0xF4] 2,
 513         [0xF5] 0,
 514         [0xF6] 1,
 515         [0xF7] 0,
 516         [0xF8] 1,
 517         [0xF9] 0,
 518         [0xFA] 2,
 519         [0xFB] 0,
 520         [0xFC] 2,
 521         [0xFD] 0,
 522         [0xFE] 1,
 523         [0xFF] 0,
 524 };
 525
 526 static char *cbopcodes[256] = {
 527         [0x00] "RLC B",
 528         [0x01] "RLC C",
 529         [0x02] "RLC D",
 530         [0x03] "RLC E",
 531         [0x04] "RLC H",
 532         [0x05] "RLC L",
 533         [0x06] "RLC (HL)",
 534         [0x07] "RLC A",
 535         [0x08] "RRC B",
 536         [0x09] "RRC C",
 537         [0x0A] "RRC D",
 538         [0x0B] "RRC E",
 539         [0x0C] "RRC H",
 540         [0x0D] "RRC L",
 541         [0x0E] "RRC (HL)",
 542         [0x0F] "RRC A",
 543         [0x10] "RL B",
 544         [0x11] "RL C",
 545         [0x12] "RL D",
 546         [0x13] "RL E",
 547         [0x14] "RL H",
 548         [0x15] "RL L",
 549         [0x16] "RL (HL)",
 550         [0x17] "RL A",
 551         [0x18] "RR B",
 552         [0x19] "RR C",
 553         [0x1A] "RR D",
 554         [0x1B] "RR E",
 555         [0x1C] "RR H",
 556         [0x1D] "RR L",
 557         [0x1E] "RR (HL)",
 558         [0x1F] "RR A",
 559         [0x20] "SLA B",
 560         [0x21] "SLA C",
 561         [0x22] "SLA D",
 562         [0x23] "SLA E",
 563         [0x24] "SLA H",
 564         [0x25] "SLA L",
 565         [0x26] "SLA (HL)",
 566         [0x27] "SLA A",
 567         [0x28] "SRA B",
 568         [0x29] "SRA C",
 569         [0x2A] "SRA D",
 570         [0x2B] "SRA E",
 571         [0x2C] "SRA H",
 572         [0x2D] "SRA L",
 573         [0x2E] "SRA (HL)",
 574         [0x2F] "SRA A",
 575         [0x30] "SWAP B",
 576         [0x31] "SWAP C",
 577         [0x32] "SWAP D",
 578         [0x33] "SWAP E",
 579         [0x34] "SWAP H",
 580         [0x35] "SWAP L",
 581         [0x36] "SWAP (HL)",
 582         [0x37] "SWAP A",
 583         [0x38] "SRL B",
 584         [0x39] "SRL C",
 585         [0x3A] "SRL D",
 586         [0x3B] "SRL E",
 587         [0x3C] "SRL H",
 588         [0x3D] "SRL L",
 589         [0x3E] "SRL (HL)",
 590         [0x3F] "SRL A",
 591         [0x40] "BIT 0,B",
 592         [0x41] "BIT 0,C",
 593         [0x42] "BIT 0,D",
 594         [0x43] "BIT 0,E",
 595         [0x44] "BIT 0,H",
 596         [0x45] "BIT 0,L",
 597         [0x46] "BIT 0,(HL)",
 598         [0x47] "BIT 0,A",
 599         [0x48] "BIT 1,B",
 600         [0x49] "BIT 1,C",
 601         [0x4A] "BIT 1,D",
 602         [0x4B] "BIT 1,E",
 603         [0x4C] "BIT 1,H",
 604         [0x4D] "BIT 1,L",
 605         [0x4E] "BIT 1,(HL)",
 606         [0x4F] "BIT 1,A",
 607         [0x50] "BIT 2,B",
 608         [0x51] "BIT 2,C",
 609         [0x52] "BIT 2,D",
 610         [0x53] "BIT 2,E",
 611         [0x54] "BIT 2,H",
 612         [0x55] "BIT 2,L",
 613         [0x56] "BIT 2,(HL)",
 614         [0x57] "BIT 2,A",
 615         [0x58] "BIT 3,B",
 616         [0x59] "BIT 3,C",
 617         [0x5A] "BIT 3,D",
 618         [0x5B] "BIT 3,E",
 619         [0x5C] "BIT 3,H",
 620         [0x5D] "BIT 3,L",
 621         [0x5E] "BIT 3,(HL)",
 622         [0x5F] "BIT 3,A",
 623         [0x60] "BIT 4,B",
 624         [0x61] "BIT 4,C",
 625         [0x62] "BIT 4,D",
 626         [0x63] "BIT 4,E",
 627         [0x64] "BIT 4,H",
 628         [0x65] "BIT 4,L",
 629         [0x66] "BIT 4,(HL)",
 630         [0x67] "BIT 4,A",
 631         [0x68] "BIT 5,B",
 632         [0x69] "BIT 5,C",
 633         [0x6A] "BIT 5,D",
 634         [0x6B] "BIT 5,E",
 635         [0x6C] "BIT 5,H",
 636         [0x6D] "BIT 5,L",
 637         [0x6E] "BIT 5,(HL)",
 638         [0x6F] "BIT 5,A",
 639         [0x70] "BIT 6,B",
 640         [0x71] "BIT 6,C",
 641         [0x72] "BIT 6,D",
 642         [0x73] "BIT 6,E",
 643         [0x74] "BIT 6,H",
 644         [0x75] "BIT 6,L",
 645         [0x76] "BIT 6,(HL)",
 646         [0x77] "BIT 6,A",
 647         [0x78] "BIT 7,B",
 648         [0x79] "BIT 7,C",
 649         [0x7A] "BIT 7,D",
 650         [0x7B] "BIT 7,E",
 651         [0x7C] "BIT 7,H",
 652         [0x7D] "BIT 7,L",
 653         [0x7E] "BIT 7,(HL)",
 654         [0x7F] "BIT 7,A",
 655         [0x80] "RES 0,B",
 656         [0x81] "RES 0,C",
 657         [0x82] "RES 0,D",
 658         [0x83] "RES 0,E",
 659         [0x84] "RES 0,H",
 660         [0x85] "RES 0,L",
 661         [0x86] "RES 0,(HL)",
 662         [0x87] "RES 0,A",
 663         [0x88] "RES 1,B",
 664         [0x89] "RES 1,C",
 665         [0x8A] "RES 1,D",
 666         [0x8B] "RES 1,E",
 667         [0x8C] "RES 1,H",
 668         [0x8D] "RES 1,L",
 669         [0x8E] "RES 1,(HL)",
 670         [0x8F] "RES 1,A",
 671         [0x90] "RES 2,B",
 672         [0x91] "RES 2,C",
 673         [0x92] "RES 2,D",
 674         [0x93] "RES 2,E",
 675         [0x94] "RES 2,H",
 676         [0x95] "RES 2,L",
 677         [0x96] "RES 2,(HL)",
 678         [0x97] "RES 2,A",
 679         [0x98] "RES 3,B",
 680         [0x99] "RES 3,C",
 681         [0x9A] "RES 3,D",
 682         [0x9B] "RES 3,E",
 683         [0x9C] "RES 3,H",
 684         [0x9D] "RES 3,L",
 685         [0x9E] "RES 3,(HL)",
 686         [0x9F] "RES 3,A",
 687         [0xA0] "RES 4,B",
 688         [0xA1] "RES 4,C",
 689         [0xA2] "RES 4,D",
 690         [0xA3] "RES 4,E",
 691         [0xA4] "RES 4,H",
 692         [0xA5] "RES 4,L",
 693         [0xA6] "RES 4,(HL)",
 694         [0xA7] "RES 4,A",
 695         [0xA8] "RES 5,B",
 696         [0xA9] "RES 5,C",
 697         [0xAA] "RES 5,D",
 698         [0xAB] "RES 5,E",
 699         [0xAC] "RES 5,H",
 700         [0xAD] "RES 5,L",
 701         [0xAE] "RES 5,(HL)",
 702         [0xAF] "RES 5,A",
 703         [0xB0] "RES 6,B",
 704         [0xB1] "RES 6,C",
 705         [0xB2] "RES 6,D",
 706         [0xB3] "RES 6,E",
 707         [0xB4] "RES 6,H",
 708         [0xB5] "RES 6,L",
 709         [0xB6] "RES 6,(HL)",
 710         [0xB7] "RES 6,A",
 711         [0xB8] "RES 7,B",
 712         [0xB9] "RES 7,C",
 713         [0xBA] "RES 7,D",
 714         [0xBB] "RES 7,E",
 715         [0xBC] "RES 7,H",
 716         [0xBD] "RES 7,L",
 717         [0xBE] "RES 7,(HL)",
 718         [0xBF] "RES 7,A",
 719         [0xC0] "SET 0,B",
 720         [0xC1] "SET 0,C",
 721         [0xC2] "SET 0,D",
 722         [0xC3] "SET 0,E",
 723         [0xC4] "SET 0,H",
 724         [0xC5] "SET 0,L",
 725         [0xC6] "SET 0,(HL)",
 726         [0xC7] "SET 0,A",
 727         [0xC8] "SET 1,B",
 728         [0xC9] "SET 1,C",
 729         [0xCA] "SET 1,D",
 730         [0xCB] "SET 1,E",
 731         [0xCC] "SET 1,H",
 732         [0xCD] "SET 1,L",
 733         [0xCE] "SET 1,(HL)",
 734         [0xCF] "SET 1,A",
 735         [0xD0] "SET 2,B",
 736         [0xD1] "SET 2,C",
 737         [0xD2] "SET 2,D",
 738         [0xD3] "SET 2,E",
 739         [0xD4] "SET 2,H",
 740         [0xD5] "SET 2,L",
 741         [0xD6] "SET 2,(HL)",
 742         [0xD7] "SET 2,A",
 743         [0xD8] "SET 3,B",
 744         [0xD9] "SET 3,C",
 745         [0xDA] "SET 3,D",
 746         [0xDB] "SET 3,E",
 747         [0xDC] "SET 3,H",
 748         [0xDD] "SET 3,L",
 749         [0xDE] "SET 3,(HL)",
 750         [0xDF] "SET 3,A",
 751         [0xE0] "SET 4,B",
 752         [0xE1] "SET 4,C",
 753         [0xE2] "SET 4,D",
 754         [0xE3] "SET 4,E",
 755         [0xE4] "SET 4,H",
 756         [0xE5] "SET 4,L",
 757         [0xE6] "SET 4,(HL)",
 758         [0xE7] "SET 4,A",
 759         [0xE8] "SET 5,B",
 760         [0xE9] "SET 5,C",
 761         [0xEA] "SET 5,D",
 762         [0xEB] "SET 5,E",
 763         [0xEC] "SET 5,H",
 764         [0xED] "SET 5,L",
 765         [0xEE] "SET 5,(HL)",
 766         [0xEF] "SET 5,A",
 767         [0xF0] "SET 6,B",
 768         [0xF1] "SET 6,C",
 769         [0xF2] "SET 6,D",
 770         [0xF3] "SET 6,E",
 771         [0xF4] "SET 6,H",
 772         [0xF5] "SET 6,L",
 773         [0xF6] "SET 6,(HL)",
 774         [0xF7] "SET 6,A",
 775         [0xF8] "SET 7,B",
 776         [0xF9] "SET 7,C",
 777         [0xFA] "SET 7,D",
 778         [0xFB] "SET 7,E",
 779         [0xFC] "SET 7,H",
 780         [0xFD] "SET 7,L",
 781         [0xFE] "SET 7,(HL)",
 782         [0xFF] "SET 7,A",
 783 };
 784
 785 void
 786 disasm(u16int addr)
 787 {
 788         u8int op;
 789         int x;
 790
 791         op = memread(addr);
 792         if(op == 0xCB){
 793                 op = memread(addr + 1);
 794                 print("%s\n", cbopcodes[op]);
 795                 return;
 796         }
 797         switch(operands[op]){
 798         case 0:
 799                 print(opcodes[op]);
 800                 break;
 801         case 1:
 802                 print(opcodes[op], (int)(memread(addr + 1)));
 803                 break;
 804         case 2:
 805                 x = (uint)memread(addr + 2);
 806                 x <<= 8;
 807                 x |= (uint)memread(addr + 1);
 808                 print(opcodes[op], x);
 809         }
 810         print("\n");
 811 }