1 ; **************************************************************************** 2 ; TRDOS386.ASM (TRDOS 386 Kernel) - v2.0.2 - trhdboot.s 3 ; ---------------------------------------------------------------------------- 4 ; Last Update: 12/09/2020 5 ; ---------------------------------------------------------------------------- 6 ; Beginning: 07/09/2020 7 ; ---------------------------------------------------------------------------- 8 ; Assembler: NASM version 2.15 (trhdboot.s) 9 ; ---------------------------------------------------------------------------- 10 ; Turkish Rational DOS 11 ; Operating System Project v2.0 by ERDOGAN TAN (Beginning: 04/01/2016) 12 ; 13 ; Derived from TRDOS Operating System v2.0 (80386) source code by Erdogan Tan 14 ; trfdboot.s (06/09/2020) 15 ; **************************************************************************** 16 ; Derived from rdhdboot.s (19/05/2018), Retro DOS v2 Hard Disk BS Utility 17 18 ; TRHDBOOT.ASM 19 ; Turkish Rational DOS 20 ; Disk Operation System v2.0 Project 21 ; Hard Disk (FAT12, FAT16, FAT32 fs) Boot Code 22 ; 23 ; Copyright (C) 2020 Erdogan TAN 24 ; **************************************************************************** 25 ; assembling: nasm trhdboot.s -l trhdboot.lst -o TRHDBOOT.COM -Z error.txt 26 27 ; previous version: trhdboot.s v1 -- 18/04/2000 28 29 ; ---------------------------------------------------------------------------- 30 ; equations 31 ; ---------------------------------------------------------------------------- 32 33 ; boot sector parameters 34 35 bsOemName equ 3 ; ('MSWIN4.1') --> 'TRDOS386' 36 bsBytesPerSec equ 11 ; 512 (word) 37 bsSecPerClust equ 13 38 bsResSectors equ 14 39 bsFATs equ 16 40 bsRootDirEnts equ 17 41 bsSectors equ 19 42 bsMedia equ 21 ; 0F8h 43 bsFATsecs equ 22 44 bsSecPerTrack equ 24 45 bsHeads equ 26 46 bsHidden1 equ 28 47 bsHidden2 equ 30 48 bsHugeSectors equ 32 49 ; FAT 16 bs & FAT 12 bs 50 bsDriveNumber equ 36 ; 80h 51 bsReserved1 equ 37 52 bsBpbSignature equ 38 ; 29h (byte) 53 bsVolumeID equ 39 54 bsVolumeLabel equ 43 55 bsFileSysType equ 54 ; 'FAT16 ' (8 bytes) 56 ; FAT 32 bs 57 BPB_FATSz32 equ 36 58 BPB_ExtFlags equ 40 59 BPB_FSVer equ 42 60 BPB_RootClus equ 44 61 BPB_FSInfo equ 48 62 BPB_BkBootSec equ 50 63 BPB_Reserved equ 52 64 BS_DrvNum equ 64 ; 80h 65 BS_Reserved1 equ 65 66 BS_BootSig equ 66 ; 29h (byte) 67 BS_VolID equ 67 68 BS_VolLab equ 71 69 BS_FilSysType equ 82 ; 'FAT32 ' (8 bytes) 70 71 ; Masterboot / Partition Table at Beginning+1BEh 72 ptBootable equ 0 73 ptBeginHead equ 1 74 ptBeginSector equ 2 75 ptBeginCylinder equ 3 76 ptFileSystemID equ 4 77 ptEndHead equ 5 78 ptEndSector equ 6 79 ptEndCylinder equ 7 80 ptStartSector equ 8 81 ptSectors equ 12 82 83 partition_table equ 1BEh 84 85 ; ---------------------------------------------------------------------------- 86 ; code 87 ; ---------------------------------------------------------------------------- 88 89 [BITS 16] 90 [ORG 100h] 91 92 00000000 FA cli 93 00000001 FC cld 94 00000002 0E push cs 95 00000003 17 pop ss 96 00000004 BCFEFF mov sp, 0FFFEh 97 00000007 FB sti 98 99 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 100 ; see if drive specified 101 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 102 103 00000008 BE8000 mov si, 80h ; PSP command tail 104 0000000B 8A0C mov cl, [si] 105 0000000D 08C9 or cl, cl 106 0000000F 7457 jz short T_9 ; jump if zero 107 T_1: 108 00000011 46 inc si 109 110 00000012 8A04 mov al, [si] 111 00000014 3C20 cmp al, ' ' ; is it SPACE ? 112 00000016 7506 jne short T_2 113 114 00000018 FEC9 dec cl 115 0000001A 75F5 jnz short T_1 116 0000001C EB4A jmp short T_9 117 T_2: 118 0000001E 46 inc si 119 0000001F 803C3A cmp byte [si], ':' 120 00000022 741D je short T_3 121 00000024 803C20 cmp byte [si], ' ' 122 00000027 7618 jna short T_3 123 124 00000029 3C68 cmp al, 'h' 125 0000002B 753B jne short T_9 126 0000002D 803C64 cmp byte [si], 'd' 127 00000030 7536 jne short T_9 128 00000032 46 inc si 129 00000033 8A04 mov al, [si] 130 00000035 3C30 cmp al, '0' 131 00000037 7429 je short T_8 132 00000039 722D jb short T_9 133 0000003B 3C33 cmp al, '3' 134 0000003D 7623 jna short T_8 135 0000003F EB27 jmp short T_9 136 T_3: 137 00000041 3C43 cmp al, 'C' 138 00000043 7223 jb short T_9 139 00000045 7414 je short T_6 140 ;cmp al, 'Z' ; A - Z 141 ;jna short T_6 142 00000047 3C44 cmp al, 'D' 143 00000049 7610 jna short T_6 144 0000004B 3C5A cmp al, 'Z' 145 0000004D 7619 jna short T_9 146 T_4: 147 0000004F 3C63 cmp al, 'c' ; a - z 148 00000051 7215 jb short T_9 149 00000053 7404 je short T_5 150 ;cmp al, 'z' 151 ;ja short T_9 152 00000055 3C64 cmp al, 'd' 153 00000057 770F ja short T_9 154 T_5: 155 00000059 2C20 sub al, 'a'-'A' ; to upper case 156 157 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 158 ; get drive code 159 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 160 161 T_6: 162 0000005B 2C13 sub al, 'C'-'0' 163 T_7: 164 0000005D A2[CF0D] mov [TrDOS_Drive], al ; '0' .. '4' 165 00000060 EB0F jmp short T_10 166 T_8: 167 00000062 46 inc si 168 00000063 803C20 cmp byte [si], ' ' 169 00000066 76F5 jna short T_7 170 171 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 172 ; Write message 173 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 174 175 T_9: 176 00000068 BE[9C0B] mov si, TrDOS_Welcome 177 0000006B E86502 call print_msg 178 ;cmp cl, 0 179 ;ja short T_35 180 0000006E E94B02 jmp T_35 181 182 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 183 ; get drive parameters 184 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 185 186 T_10: 187 00000071 B408 mov ah, 08h 188 ;mov dl, [TrDOS_Drive] ; drive 189 00000073 88C2 mov dl, al 190 00000075 80C250 add dl, 80h -'0' ; make it 80h based 191 00000078 8816[980B] mov [drv], dl 192 0000007C CD13 int 13h ; return disk parameters 193 194 0000007E 0E push cs 195 0000007F 07 pop es ; restore es 196 197 00000080 08E4 or ah, ah 198 00000082 753B jnz short T_12 ; error 199 200 00000084 88C8 mov al, cl 201 00000086 243F and al, 63 202 00000088 A2[B40E] mov [sectors], al 203 0000008B C0E906 shr cl, 6 204 0000008E 86E9 xchg ch, cl 205 00000090 41 inc cx 206 00000091 890E[B60E] mov [cylinders], cx 207 00000095 FEC6 inc dh 208 00000097 8836[B50E] mov [heads], dh 209 0000009B F6E6 mul dh 210 ; ax = heads * spt 211 0000009D F7E1 mul cx ; * cylinders 212 ; dx:ax = chs limit 213 0000009F A3[B00E] mov [CHS_limit], ax 214 000000A2 8916[B20E] mov [CHS_limit+2], dx 215 216 ; check for (valid) primary dos partition 217 218 ;mov byte [RetryCount], 4 219 220 ;mov ax, 0201h ; read disk 221 000000A6 BB[C00E] mov bx, MBR ; location of masterboot code 222 223 000000A9 B90100 mov cx, 1 ; cylinder = 0 224 ; sector = 1 225 000000AC B600 mov dh, 0 ; head = 0 226 ;mov dl, [TrDOS_Drive] ; drive 227 ;add dl, 80h -'0' ; make it 80h based 228 000000AE 8A16[980B] mov dl, [drv] 229 T_11: 230 000000B2 B80102 mov ax, 0201h 231 000000B5 CD13 int 13h 232 ;jc short T_12 233 000000B7 7311 jnc short T_13 ; read masterboot sector, OK 234 235 000000B9 FE0E[AE0E] dec byte [RetryCount] 236 000000BD 75F3 jnz short T_11 237 T_12: 238 000000BF C606[340E]00 mov byte [zbyte], 0 239 000000C4 E80902 call T_37 ; write error message 240 000000C7 E9F201 jmp T_35 ; terminate 241 242 T_13: 243 000000CA 813E[BE10]55AA cmp word [MBR+510], 0AA55h 244 000000D0 75ED jne short T_12 245 246 000000D2 BE[8210] mov si, MBR+(partition_table+ptFileSystemID) 247 T_14: 248 000000D5 E88A02 call validate_primary_dos_partition 249 000000D8 7312 jnc short T_15 250 251 000000DA 83C610 add si, 16 252 000000DD 81FE[C210] cmp si, MBR+partition_table+ptFileSystemID+64 253 000000E1 72F2 jb short T_14 254 255 000000E3 BE[7C0E] mov si, TRDOS_fatp_notfound 256 000000E6 E8EA01 call print_msg 257 000000E9 E9D001 jmp T_35 258 259 T_15: 260 ; valid primary dos partition 261 ; al = FAT type (1,2,3) 262 ; ah = partition type 263 264 000000EC A2[AD0E] mov byte [fattype], al 265 000000EF 3C02 cmp al, 2 266 000000F1 741B je short T_17 ; FAT16 BS (default offset addr) 267 000000F3 720E jb short T_16 268 ; set TRDOS 386 BS pointer for FAT32 BS 269 000000F5 C706[9403][9803] mov word [trdos386bs], TRDOS_FAT32_hd_bs 270 ; set FS type string 271 000000FB C706[6D0E]3332 mov word [fattype_str],'32' ; 'FAT32' 272 ; ok.. read boot sector 273 00000101 EB0B jmp short T_17 274 T_16: 275 ; set TRDOS 386 BS pointer for FAT12 BS 276 00000103 C706[9403][9809] mov word [trdos386bs], TRDOS_FAT12_hd_bs 277 00000109 C606[6E0E]32 mov byte [fattype_str+1],'2' ; 'FAT12' 278 T_17: 279 0000010E C606[AE0E]05 mov byte [RetryCount], 5 280 281 00000113 83C604 add si, ptStartSector-ptFileSystemID 282 00000116 8B04 mov ax, [si] 283 00000118 8B5402 mov dx, [si+2] 284 0000011B A3[B80E] mov [dosp_start], ax 285 0000011E 8916[BA0E] mov [dosp_start+2], dx 286 00000122 83C604 add si, ptSectors-ptStartSector 287 00000125 8B0C mov cx, [si] 288 00000127 8B5C02 mov bx, [si+2] 289 0000012A 890E[BC0E] mov [dosp_size], cx 290 0000012E 891E[BE0E] mov [dosp_size+2], bx 291 00000132 01C1 add cx, ax 292 00000134 11D3 adc bx, dx 293 00000136 7287 jc short T_12 294 295 00000138 3B1E[B20E] cmp bx, [CHS_limit+2] 296 0000013C BB[C00E] mov bx, bootsector 297 0000013F 772C ja short T_20 ; LBA read/write 298 00000141 7206 jb short T_18 299 00000143 3B0E[B00E] cmp cx, [CHS_limit] 300 00000147 7724 ja short T_20 301 T_18: 302 ; CHS read 303 304 00000149 83EE0B sub si, ptSectors-ptBeginHead 305 306 0000014C 8A34 mov dh, [si] ; head 307 0000014E 46 inc si 308 0000014F 8B0C mov cx, [si] ; sector 309 ; cl = sector, ch = cylinder 310 ;mov bx, bootsector 311 00000151 8A16[980B] mov dl, [drv] 312 313 00000155 8836[990B] mov [_dh], dh 314 00000159 890E[9A0B] mov [_cx], cx 315 T_19: 316 0000015D B80102 mov ax, 0201h ; read one sector 317 00000160 CD13 int 13h 318 00000162 733A jnc short T_22 ; OK 319 00000164 FE0E[AE0E] dec byte [RetryCount] 320 00000168 75F3 jnz short T_19 321 0000016A E952FF jmp T_12 322 T_20: 323 ; LBA read 324 0000016D C606[AF0E]01 mov byte [lba], 1 325 ;mov ax, [dosp_start] 326 ;mov dx, [dosp_start+2] 327 T_21: 328 ;pusha ; db 60h 329 00000172 60 db 60h 330 ;push 0 ; db 6Ah, 00h 331 00000173 6A00 db 6Ah, 0 332 ;push 0 ; db 6Ah, 00h 333 00000175 6A00 db 6Ah, 0 334 00000177 52 push dx 335 00000178 50 push ax 336 00000179 06 push es 337 0000017A 53 push bx 338 ;push 1 ; db 6Ah, 01h 339 0000017B 6A01 db 6Ah, 01h 340 ;push 10h ; db 6Ah, 10h 341 0000017D 6A10 db 6Ah, 10h 342 343 0000017F 8A16[980B] mov dl, [drv] 344 00000183 B442 mov ah, 42h 345 00000185 89E6 mov si, sp 346 00000187 CD13 int 13h 347 348 ;popa 349 00000189 61 db 61h 350 ;popa 351 0000018A 61 db 61h 352 0000018B 7311 jnc short T_22 353 354 0000018D FE0E[AE0E] dec byte [RetryCount] 355 00000191 0F842AFF jz T_12 356 357 00000195 A1[B80E] mov ax, [dosp_start] 358 00000198 8B16[BA0E] mov dx, [dosp_start+2] 359 0000019C EBD4 jmp T_21 360 361 T_22: 362 0000019E 813E[BE10]55AA cmp word [bootsector+510], 0AA55h 363 000001A4 7536 jne short T_23 364 365 000001A6 813E[CB0E]0002 cmp word [bootsector+bsBytesPerSec], 512 366 000001AC 752E jne short T_23 367 368 000001AE C606[D50E]F8 mov byte [bootsector+bsMedia], 0F8h 369 000001B3 7527 jne short T_23 370 371 000001B5 803E[AD0E]02 cmp byte [fattype], 2 372 000001BA 7729 ja short T_24 373 374 000001BC 803E[E60E]29 cmp byte [bootsector+bsBpbSignature], 29h 375 000001C1 7519 jne short T_23 376 000001C3 66813E[F60E]464154- cmp dword [bootsector+bsFileSysType], 'FAT1' 376 000001CB 31 377 000001CC 750E jne short T_23 378 379 000001CE B92B00 mov cx, 54-11 ; byte count to be copied 380 381 000001D1 A0[FA0E] mov al, [bootsector+bsFileSysType+4] 382 000001D4 3C36 cmp al, '6' 383 000001D6 7429 je short T_25 384 385 000001D8 3C32 cmp al, '2' 386 000001DA 7425 je short T_25 387 T_23: 388 000001DC BE[470E] mov si, TrDOS_invalid_bootsector 389 000001DF E8F100 call print_msg 390 000001E2 E9D700 jmp T_35 391 T_24: 392 000001E5 803E[020F]29 cmp byte [bootsector+BS_BootSig], 29h 393 000001EA 75F0 jne short T_23 394 000001EC 66813E[120F]464154- cmp dword [bootsector+BS_FilSysType], 'FAT3' 394 000001F4 33 395 000001F5 75E5 jne short T_23 396 000001F7 803E[160F]32 cmp byte [bootsector+BS_FilSysType+4], '2' 397 000001FC 75DE jne short T_23 398 399 000001FE B94700 mov cx, 82-11 ; byte count to be copied 400 T_25: 401 00000201 BE[F80C] mov si, TrDOS_Do_you_want 402 00000204 E8CC00 call print_msg 403 T_26: 404 ;xor ax, ax 405 ;int 16h ; wait for keyboard command 406 ;cmp al, 'y' 407 ;je short T_27 ; retry 408 ;cmp al, 'Y' 409 ;je short T_27 410 ;cmp al, 'n' 411 ;je short T_35 ; exit 412 ;cmp al, 'N' 413 ;je short T_35 414 ;cmp al, 'C'-40h 415 ;je short T_35 416 ;cmp al, 27 417 ;je short T_35 418 ;jmp short T_26 419 420 00000207 E8D800 call get_answer 421 0000020A 3C59 cmp al, 'Y' 422 0000020C 7409 je short T_27 423 424 0000020E BE[9C0D] mov si, _no_str 425 00000211 E8BF00 call print_msg 426 427 00000214 E9A500 jmp T_35 428 T_27: 429 00000217 BE[950D] mov si, _yes_str 430 0000021A E8B600 call print_msg 431 432 ;mov si, TrDOS_CRLF 433 ;call print_msg 434 435 ; set 'TRDOS386' as OEM name 436 0000021D 8B3E[9403] mov di, [trdos386bs] 437 00000221 83C703 add di, bsOemName 438 00000224 B85452 mov ax, 'TR' 439 00000227 AB stosw 440 00000228 B8444F mov ax, 'DO' 441 0000022B AB stosw 442 0000022C B85333 mov ax, 'S3' 443 0000022F AB stosw 444 00000230 B83836 mov ax, '86' 445 00000233 AB stosw 446 447 ; DI points to trdos386bs+bsBytesPerSec 448 00000234 BE[CB0E] mov si, bootsector+bsBytesPerSec 449 450 00000237 F3A4 rep movsb 451 452 00000239 BE[A20D] mov si, TrDOS_PressKeyWhenReady 453 0000023C E89400 call print_msg 454 T_28: 455 0000023F 31C0 xor ax, ax 456 00000241 CD16 int 16h ; wait for keyboard command 457 00000243 3C0D cmp al, 'M'-40h ; Enter (OK) key 458 00000245 740A je short T_29 ; write 459 00000247 3C03 cmp al, 'C'-40h 460 00000249 7471 je short T_35 ; no write (exit) 461 0000024B 3C1B cmp al, 27 462 0000024D 746D je short T_35 463 0000024F EBEE jmp short T_28 464 465 T_29: 466 00000251 BE[0F0E] mov si, TrDOS_CRLF 467 00000254 E87C00 call print_msg 468 T_30: 469 ;xor ax, ax 470 ;int 1Ah ; get time of day 471 472 ;mov si, volume_id 473 474 ;mov [si], dx 475 ;mov [si+2], cx ; set unique volume ID 476 477 ;mov ah, 02h ; Return Current Time 478 ;int 1Ah 479 ;xchg ch, cl 480 ;xchg dh, dl 481 482 ;add cx, dx 483 ;add [si+2], cx 484 485 ;mov ah, 04h ; Return Current Date 486 ;int 1Ah 487 ;xchg ch, cl 488 ;xchg dh, dl 489 490 ;add cx, dx 491 ;add [si+2], cx 492 493 ;mov ax, [vol_id] 494 ;mov dx, [vol_id+2] 495 496 00000257 8B1E[9403] mov bx, [trdos386bs] ; location of boot code 497 ; es: bx = boot sector buffer address 498 499 ;mov si, bx 500 ;add si, bsVolumeID 501 502 ;cmp byte [fattype], 3 503 ;jne short T_31 504 505 ;add si, BS_VolID-bsVolumeID 506 ;T_31: 507 ;mov [si], ax 508 ;mov [si+2], dx 509 510 0000025B 803E[AF0E]01 cmp byte [lba], 1 511 00000260 731E jnb short T_32 ; LBA write 512 513 00000262 8A16[980B] mov dl, [drv] ; drive 514 00000266 8A36[990B] mov dh, [_dh] ; head 515 0000026A 8B0E[9A0B] mov cx, [_cx] ; cl = sector, ch = cylinder (low 8 bits) 516 T_31: 517 0000026E B80103 mov ax, 0301h ; write to disk 518 ; es: bx = boot sector buffer address 519 520 00000271 CD13 int 13h 521 00000273 733A jnc short T_34 ; ok 522 523 ; error 524 525 00000275 FE0E[AE0E] dec byte [RetryCount] 526 00000279 75F3 jnz short T_31 527 0000027B E85200 call T_37 528 0000027E EB47 jmp short T_36 529 530 T_32: 531 00000280 A1[B80E] mov ax, [dosp_start] 532 00000283 8B16[BA0E] mov dx, [dosp_start+2] 533 T_33: 534 ;pusha ; db 60h 535 00000287 60 db 60h 536 ;push 0 ; db 6Ah, 00h 537 00000288 6A00 db 6Ah, 0 538 ;push 0 ; db 6Ah, 00h 539 0000028A 6A00 db 6Ah, 0 540 0000028C 52 push dx 541 0000028D 50 push ax 542 0000028E 06 push es 543 0000028F 53 push bx 544 ;push 1 ; db 6Ah, 01h 545 00000290 6A01 db 6Ah, 01h 546 ;push 10h ; db 6Ah, 10h 547 00000292 6A10 db 6Ah, 10h 548 549 00000294 8A16[980B] mov dl, [drv] 550 00000298 B443 mov ah, 43h ; LBA write 551 0000029A 30C0 xor al, al ; verify off 552 0000029C 89E6 mov si, sp 553 0000029E CD13 int 13h 554 555 ;popa 556 000002A0 61 db 61h 557 ;popa 558 000002A1 61 db 61h 559 000002A2 730B jnc short T_34 560 561 000002A4 FE0E[AE0E] dec byte [RetryCount] 562 000002A8 75D6 jnz short T_32 563 000002AA E82300 call T_37 564 000002AD EB18 jmp short T_36 565 566 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 567 ; success. try again ? 568 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 569 570 T_34: 571 000002AF 803E[AD0E]03 cmp byte [fattype], 3 ; FAT32 572 000002B4 744D je short T_40 573 574 000002B6 BE[D30D] mov si, TrDOS_disk_WrittenSuccesfully 575 000002B9 E81700 call print_msg 576 T_35: 577 000002BC BE[0F0E] mov si, TrDOS_CRLF 578 000002BF E81100 call print_msg 579 000002C2 B8004C mov ax, 4C00h ; terminate 580 000002C5 CD21 int 21h 581 T_36: 582 ;xor ax, ax 583 ;int 16h ; wait for keyboard command 584 ;cmp al, 'y' 585 ;je short TX_15 ; retry 586 ;cmp al, 'Y' 587 ;je short TX_15 588 ;cmp al, 'n' 589 ;je short T_35 ; exit 590 ;cmp al, 'N' 591 ;je short T_35 592 ;cmp al, 'C'-40h 593 ;je short T_35 594 ;cmp al, 27 595 ;je short T_35 596 ;jmp short T_36 597 598 000002C7 E81800 call get_answer 599 000002CA 3C59 cmp al, 'Y' 600 000002CC 7483 je short T_29 601 000002CE EBEC jmp short T_35 602 603 T_37: 604 000002D0 BE[120E] mov si, TrDOS_disk_NotReadyOrError 605 ;;call print_msg 606 ;;jmp short T_36 607 ;jmp short print_msg 608 609 print_msg: 610 T_38: 611 000002D3 AC lodsb ; Load byte at DS:SI to AL 612 000002D4 20C0 and al, al 613 000002D6 7409 jz short T_39 614 000002D8 B40E mov ah, 0Eh 615 000002DA BB0700 mov bx, 07h 616 000002DD CD10 int 10h ; BIOS Service func ( ah ) = 0Eh 617 ; Write char as TTY 618 ; AL-char BH-page BL-color 619 000002DF EBF2 jmp short T_38 620 T_39: 621 _NO_: 622 000002E1 C3 retn 623 624 get_answer: 625 000002E2 31C0 xor ax, ax 626 000002E4 CD16 int 16h ; wait for keyboard command 627 000002E6 3C79 cmp al, 'y' 628 000002E8 7416 je short _yes ; retry 629 000002EA 3C59 cmp al, 'Y' 630 000002EC 7414 je short _YES_ 631 000002EE 3C6E cmp al, 'n' 632 000002F0 74EF je short _NO_ ; exit 633 000002F2 3C4E cmp al, 'N' 634 000002F4 74EB je short _NO_ 635 000002F6 3C03 cmp al, 'C'-40h 636 000002F8 74E7 je short _NO_ 637 000002FA 3C1B cmp al, 27 638 000002FC 74E3 je short _NO_ 639 000002FE EBE2 jmp short get_answer 640 _yes: 641 00000300 B059 mov al, 'Y' 642 _YES_: 643 00000302 C3 retn 644 645 T_40: 646 ; write 2nd sector of FAT32 bs code (1024 bytes) 647 648 00000303 C606[AE0E]04 mov byte [RetryCount], 4 649 00000308 C606[AD0E]00 mov byte [fattype], 0 650 651 0000030D BB[9805] mov bx, TRDOS_FAT32_hd_bs+512 652 653 00000310 803E[AF0E]00 cmp byte [lba], 0 654 00000315 7610 jna short T_41 655 656 00000317 A1[B80E] mov ax, [dosp_start] 657 0000031A 8B16[BA0E] mov dx, [dosp_start+2] 658 0000031E 83C002 add ax, 2 ; sector 2 in the partition (after FSINFO sector) 659 00000321 83D200 adc dx, 0 660 00000324 E960FF jmp T_33 661 T_41: 662 ; convert FAT32 bootsector+2 address to CHS 663 ;mov dl, [drv] ; drive 664 ;mov dh, [_dh] ; head 665 ;mov cx, [_cx] ; cl = sector, ch = cylinder (low 8 bits) 666 00000327 89C8 mov ax, cx 667 00000329 243F and al, 63 668 0000032B 3A06[B40E] cmp al, [sectors] 669 0000032F 7313 jnb short T_43 670 00000331 FEC0 inc al 671 00000333 3A06[B40E] cmp al, [sectors] 672 00000337 7307 jnb short T_42 673 00000339 FEC1 inc cl 674 0000033B FEC1 inc cl 675 0000033D E92EFF jmp T_31 676 T_42: 677 00000340 B001 mov al, 1 ; sector 1 678 00000342 EB02 jmp short T_44 679 T_43: 680 00000344 B002 mov al, 2 ; sector 2 681 T_44: 682 00000346 FEC6 inc dh 683 00000348 3A36[B50E] cmp dh, [heads] 684 0000034C 0F821EFF jb T_31 685 00000350 28F6 sub dh, dh ; head 0 686 00000352 C0E906 shr cl, 6 687 00000355 86E9 xchg ch, cl 688 00000357 41 inc cx ; next cylinder 689 ;and cx, 1023 690 ;cmp cx, [cylinders] 691 ;jnb short T_37 692 00000358 86CD xchg cl, ch 693 0000035A C0E106 shl cl, 6 694 0000035D 08C1 or cl, al 695 0000035F E90CFF jmp T_31 696 697 validate_primary_dos_partition: 698 699 ; INPUT: 700 ; si = partition table entry offset + file system ID 701 ; OUTPUT: 702 ; cf = 0 -> ah = primary DOS partition ID 703 ; (01h,04h,06h,0Bh,0Ch,0Eh) 704 ; al = FAT type 705 ; 1 = FAT12 706 ; 2 = FAT16 707 ; 3 = FAT32 708 ; 709 ; cf = 1 -> not a primary DOS partition 710 711 00000362 28C0 sub al, al ; mov al, 0 712 713 00000364 8A24 mov ah, [si] 714 715 00000366 80FC01 cmp ah, 01h ; FAT12 partition 716 00000369 7228 jb short V_5 ; 0 717 0000036B 741E je short V_3 718 V_0: 719 0000036D FEC0 inc al ; mov al, 1 720 721 0000036F 80FC06 cmp ah, 06h ; FAT16 CHS partition (>=32MB) 722 00000372 7709 ja short V_2 723 00000374 7415 je short V_3 724 725 00000376 80FC04 cmp ah, 04h ; FAT16 CHS partition (< 32MB) 726 00000379 7410 je short V_3 727 V_1: 728 0000037B F9 stc 729 0000037C C3 retn 730 V_2: 731 0000037D FEC0 inc al ; mov al, 2 732 733 0000037F 80FC0C cmp ah, 0Ch ; FAT32 LBA partition 734 00000382 7407 je short V_3 735 00000384 7708 ja short V_4 736 737 00000386 80FC0B cmp ah, 0Bh ; FAT32 CHS partition 738 00000389 7208 jb short V_5 739 V_3: 740 0000038B FEC0 inc al ; 0->1, 1->2, 2->3 741 0000038D C3 retn 742 V_4: 743 0000038E 80FC0E cmp ah, 0Eh ; FAT16 LBA partition 744 00000391 75E8 jne short V_1 745 ;mov al, 2 746 V_5: 747 00000393 C3 retn 748 749 ; ---------------------------------------------------------------------------- 750 ; initialized data 751 ; ---------------------------------------------------------------------------- 752 753 align 2 754 755 trdos386bs: 756 00000394 [9807] dw TRDOS_FAT16_hd_bs 757 00000396 0000 dw 0 758 759 ;volume_id: 760 ; dd 0 761 762 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 763 ; FAT boot sector code 764 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 765 766 TRDOS_FAT32_hd_bs: 767 00000398 incbin 'FAT32_BS.BIN' 768 TRDOS_FAT16_hd_bs: 769 00000798 incbin 'FAT16_BS.BIN' 770 TRDOS_FAT12_hd_bs: 771 00000998 incbin 'FAT12_BS.BIN' 772 773 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 774 ; messages 775 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 776 777 00000B98 00 drv: db 0 778 779 ;sectors: db 0 780 ;heads : db 0 781 ;cylinders: dw 0 782 783 00000B99 00 _dh: db 0 784 00000B9A 0000 _cx: dw 0 785 786 TrDOS_Welcome: 787 00000B9C 0D0A db 0Dh, 0Ah 788 00000B9E 54522D444F53203338- db 'TR-DOS 386 v2 Hard Disk Boot Sector Update Utility ' 788 00000BA7 362076322048617264- 788 00000BB0 204469736B20426F6F- 788 00000BB9 7420536563746F7220- 788 00000BC2 557064617465205574- 788 00000BCB 696C69747920 789 00000BD1 0D0A db 0Dh, 0Ah 790 00000BD3 286329204572646F67- db '(c) Erdogan TAN - 2020' 790 00000BDC 616E2054414E202D20- 790 00000BE5 32303230 791 00000BE9 0D0A db 0Dh,0Ah 792 00000BEB 0D0A db 0Dh,0Ah 793 00000BED 55736167653A207472- db 'Usage: trhdboot ' 793 00000BF6 6864626F6F74203C64- 793 00000BFF 726976653E20 794 00000C05 0D0A0D0A db 0Dh,0Ah, 0Dh, 0Ah 795 00000C09 4472697665206E616D- db 'Drive names: ' 795 00000C12 65733A20 796 00000C16 0D0A db 0Dh, 0Ah 797 00000C18 20686430206F722043- db ' hd0 or C: ..for primary dos partition on 1st disk ' 797 00000C21 3A202E2E666F722070- 797 00000C2A 72696D61727920646F- 797 00000C33 732070617274697469- 797 00000C3C 6F6E206F6E20317374- 797 00000C45 206469736B20 798 00000C4B 0D0A db 0Dh, 0Ah 799 00000C4D 20686431206F722044- db ' hd1 or D: ..for primary dos partition on 2nd disk ' 799 00000C56 3A202E2E666F722070- 799 00000C5F 72696D61727920646F- 799 00000C68 732070617274697469- 799 00000C71 6F6E206F6E20326E64- 799 00000C7A 206469736B20 800 00000C80 0D0A db 0Dh, 0Ah 801 00000C82 206864322020202020- db ' hd2 ..for primary dos partition on 3rd disk ' 801 00000C8B 20202E2E666F722070- 801 00000C94 72696D61727920646F- 801 00000C9D 732070617274697469- 801 00000CA6 6F6E206F6E20337264- 801 00000CAF 206469736B20 802 00000CB5 0D0A db 0Dh, 0Ah 803 00000CB7 206864332020202020- db ' hd3 ..for primary dos partition on 4th disk ' 803 00000CC0 20202E2E666F722070- 803 00000CC9 72696D61727920646F- 803 00000CD2 732070617274697469- 803 00000CDB 6F6E206F6E20347468- 803 00000CE4 206469736B20 804 00000CEA 0D0A00 db 0Dh, 0Ah, 0 805 806 00000CED 31322F30392F323032- db '12/09/2020' 806 00000CF6 30 807 00000CF7 00 db 0 808 809 TrDOS_Do_you_want: 810 00000CF8 0D0A db 0Dh, 0Ah 811 00000CFA 5741524E494E472021- db "WARNING ! ", 0Dh, 0Ah 811 00000D03 200D0A 812 00000D06 28496620796F752073- db "(If you say 'Yes', MSDOS or WINDOWS will not be bootable on this disk !) " 812 00000D0F 61792027596573272C- 812 00000D18 204D53444F53206F72- 812 00000D21 2057494E444F575320- 812 00000D2A 77696C6C206E6F7420- 812 00000D33 626520626F6F746162- 812 00000D3C 6C65206F6E20746869- 812 00000D45 73206469736B202129- 812 00000D4E 20 813 00000D4F 0D0A0D0A db 0Dh, 0Ah, 0Dh, 0Ah 814 00000D53 446F20796F75207761- db "Do you want to update boot sector to TRDOS 386 v2 format ? (Y/N) " 814 00000D5C 6E7420746F20757064- 814 00000D65 61746520626F6F7420- 814 00000D6E 736563746F7220746F- 814 00000D77 205452444F53203338- 814 00000D80 3620763220666F726D- 814 00000D89 6174203F2028592F4E- 814 00000D92 2920 815 00000D94 00 db 0 816 817 _yes_str: 818 00000D95 59455320 db 'YES ' 819 00000D99 0D0A00 db 0Dh, 0Ah, 0 820 _no_str: 821 00000D9C 4E4F20 db 'NO ' 822 00000D9F 0D0A00 db 0Dh, 0Ah, 0 823 824 TrDOS_PressKeyWhenReady: 825 00000DA2 0D0A db 0Dh, 0Ah 826 00000DA4 507265737320456E74- db 'Press Enter to write boot sector on disk hd' 826 00000DAD 657220746F20777269- 826 00000DB6 746520626F6F742073- 826 00000DBF 6563746F72206F6E20- 826 00000DC8 6469736B206864 827 TrDOS_Drive: 828 00000DCF 3F2E2000 db '?. ', 0 829 830 TrDOS_disk_WrittenSuccesfully: 831 00000DD3 0D0A db 0Dh, 0Ah 832 00000DD5 426F6F742073656374- db 'Boot sector successfully updated to TRDOS 386 v2 format...' 832 00000DDE 6F7220737563636573- 832 00000DE7 7366756C6C79207570- 832 00000DF0 646174656420746F20- 832 00000DF9 5452444F5320333836- 832 00000E02 20763220666F726D61- 832 00000E0B 742E2E2E 833 TrDOS_CRLF: 834 00000E0F 0D0A00 db 0Dh, 0Ah, 0 835 836 TrDOS_disk_NotReadyOrError: 837 00000E12 0D0A db 0Dh, 0Ah 838 00000E14 4469736B206572726F- db 'Disk error or drive not ready ! ' 838 00000E1D 72206F722064726976- 838 00000E26 65206E6F7420726561- 838 00000E2F 6479202120 839 00000E34 54727920616761696E- zbyte: db 'Try again ? (Y/N) ' 839 00000E3D 203F2028592F4E2920 840 00000E46 00 db 0 841 842 TrDOS_invalid_bootsector: 843 00000E47 0D0A db 0Dh, 0Ah 844 00000E49 496E76616C69642062- db 'Invalid boot sector (not a valid FAT' 844 00000E52 6F6F7420736563746F- 844 00000E5B 7220286E6F74206120- 844 00000E64 76616C696420464154 845 fattype_str: 846 00000E6D 313620667320646973- db '16 fs disk) ! ' 846 00000E76 6B29202120 847 00000E7B 00 db 0 848 849 TRDOS_fatp_notfound: 850 00000E7C 0D0A db 0Dh, 0Ah 851 00000E7E 4D425220646F657320- db 'MBR does not contain a primary DOS partition ! ' 851 00000E87 6E6F7420636F6E7461- 851 00000E90 696E2061207072696D- 851 00000E99 61727920444F532070- 851 00000EA2 6172746974696F6E20- 851 00000EAB 2120 852 fattype: 853 00000EAD 00 db 0 854 RetryCount: 855 00000EAE 04 db 4 856 857 00000EAF 00 lba: db 0 858 859 align 4 860 861 CHS_limit: 862 00000EB0 0000 dw 0 863 ;dw 0 864 865 00000EB2 A101 sign: dw 417 866 867 ; ---------------------------------------------------------------------------- 868 ; uninitialized data 869 ; ---------------------------------------------------------------------------- 870 871 bss_start: 872 873 ABSOLUTE bss_start 874 875 alignb 4 876 877 00000EB4 sectors: resb 1 878 00000EB5 heads: resb 1 879 00000EB6 cylinders: resw 1 880 881 00000EB8 dosp_start: resd 1 882 00000EBC dosp_size: resd 1 883 884 MBR: 885 bootsector: 886 00000EC0 resb 512 887 888 end_bss: