1 ; **************************************************************************** 2 ; bsrestor.s (BSRESTOR.COM) - TRDOS 386 Harddisk Boot Sector Restoring Utility 3 ; (for MSDOS/WINDOWS) 4 ; **************************************************************************** 5 ; Last Update: 10/10/2020 6 ; ---------------------------------------------------------------------------- 7 ; Beginning: 05/10/2020 8 ; ---------------------------------------------------------------------------- 9 ; Assembler: NASM version 2.15 10 ; ---------------------------------------------------------------------------- 11 ; Turkish Rational DOS 12 ; Operating System Project v2.0 by ERDOGAN TAN (Beginning: 04/01/2016) 13 ; ---------------------------------------------------------------------------- 14 ; Purpose: 15 ; BSRESTOR.COM is used to restore previous boot sector of a primary 16 ; dos partition. (BSRESTOR.COM is used after BSSAVE.COM. It uses boot 17 ; sector backup file which will be created by BSSAVE.COM utility.) 18 ; ((For example: BSSAVE is used before modifying windows boot sector 19 ; by using TRHDBOOT.COM, for TRDOS386 hard disk boot test. Then, 20 ; BSRESTOR is used to restore windows boot sector after the test.)) 21 ; Backup File format: 22 ; Binary file which contains MBR and Bootsector 23 ; of primary dos partition. First 512 bytes is the MBR of a harddisk 24 ; and remain 512 bytes (FAT fs) or 1024 bytes (FAT32 fs) 25 ; is the boot sector of same hard disk. 26 ; **************************************************************************** 27 ; nasm bsrestor.s -l bsrestor.lst -o BSRESTOR.COM 28 ; ---------------------------------------------------------------------------- 29 ; Derived from: bssave.s (BSSAVE.COM) by Erdogan Tan, 03/10/2020 30 31 ; DTA (PSP+80h= Offset 128) 32 DTA_Attrib equ 149 ; PDP+21 33 DTA_Time equ 150 ; PSP+22 34 DTA_Date equ 152 ; PSP 24 35 DTA_FileSize equ 154 ; PSP + 26 36 DTA_FileName equ 158 ; PSP + 30 37 38 ; Masterboot / Partition Table at Beginning+1BEh 39 ptBootable equ 0 40 ptBeginHead equ 1 41 ptBeginSector equ 2 42 ptBeginCylinder equ 3 43 ptFileSystemID equ 4 44 ptEndHead equ 5 45 ptEndSector equ 6 46 ptEndCylinder equ 7 47 ptStartSector equ 8 48 ptSectors equ 12 49 50 ; BIOS INT 13h Extensions (LBA extensions) 51 ; Just After DP Data (DPDiskNumber+) 52 DAP_PacketSize equ 10h ; If extensions present, this byte will be >=10h 53 DAP_Reserved1 equ 11h ; Reserved Byte 54 DAP_NumOfBlocks equ 12h ; Value of this byte must be 0 to 127 55 DAP_Reserved2 equ 13h ; Reserved Byte 56 DAP_Destination equ 14h ; Address of Transfer Buffer as SEGMENT:OFFSET 57 DAP_LBA_Address equ 18h ; LBA=(C1*H0+H1)*S0+S1-1 58 ; C1= Selected Cylinder Number 59 ; H0= Number Of Heads (Maximum Head Number + 1) 60 ; H1= Selected Head Number 61 ; S0= Maximum Sector Number 62 ; S1= Selected Sector Number 63 ; QUAD WORD 64 ; DAP_Flat_Destination equ 20h ; 64 bit address, if value in 4h is FFFF:FFFFh 65 ; QUAD WORD (Also, value in 0h must be 18h) 66 ; TR-DOS will not use 64 bit Flat Address 67 68 pTableOffset equ 1BEh ; 446 69 70 [BITS 16] 71 [ORG 100h] 72 73 ;;cli 74 ;;cld 75 ;;push cs 76 ;;pop ss 77 ;;mov sp, 0FFFEh 78 ;;sti 79 ; 80 ;;mov bx, SizeOfFile+100 81 ; 82 ;mov bx, bss_end 83 ; 84 ;add bx, 15 85 ;shr bx, 1 86 ;shr bx, 1 87 ;shr bx, 1 88 ;shr bx, 1 89 ;mov ah, 4Ah ; modify memory allocation 90 ;;push cs 91 ;;pop es 92 ;int 21h 93 94 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 95 ; clear BSS 96 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 97 98 ;mov cx, bss_clear_end 99 ; 100 ;mov di, bss_start 101 ;sub cx, di 102 ;;inc cx 103 ;shr cx, 1 104 ;xor ax, ax 105 ;rep stosw 106 107 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 108 ; get command arguments (command tail) 109 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 110 111 00000000 BE8000 mov si, 80h ; PSP command tail 112 00000003 AC lodsb 113 00000004 08C0 or al, al ; command tail length 114 00000006 7421 jz short _03 ; jump if zero 115 _01: 116 00000008 AC lodsb 117 00000009 3C20 cmp al, ' ' ; is it SPACE ? 118 0000000B 74FB je short _01 119 0000000D 721A jb short _03 120 121 ; check disk name 122 123 0000000F 3C68 cmp al, 'h' 124 00000011 7516 jne short _03 125 00000013 803C64 cmp byte [si], 'd' 126 00000016 7511 jne short _03 127 00000018 46 inc si 128 00000019 AC lodsb 129 0000001A 3C30 cmp al, '0' 130 0000001C 7406 je short _02 131 0000001E 7209 jb short _03 132 00000020 3C33 cmp al, '3' 133 00000022 7705 ja short _03 134 _02: 135 00000024 803C20 cmp byte [si], ' ' 136 00000027 7406 je short _04 137 _03: 138 00000029 BE[6702] mov si, TrDOS_Welcome 139 0000002C E9F001 jmp _43 140 _04: 141 0000002F 46 inc si 142 00000030 0450 add al, 80h - '0' 143 00000032 A2[6502] mov [DrvNum], al ; 80h .. 83h 144 _05: 145 00000035 AC lodsb 146 00000036 3C20 cmp al, ' ' 147 00000038 74FB je short _05 148 0000003A 72ED jb short _03 149 150 ; check backup file name 151 _06: 152 0000003C BF[2006] mov di, bs_file_name 153 0000003F AA stosb 154 _07: 155 00000040 AC lodsb 156 ;cmp al, 0Dh ; ENTER (CR) key 157 00000041 3C20 cmp al, 20h ; ' ' 158 00000043 760C jna short _08 159 00000045 AA stosb 160 00000046 81FF[2C06] cmp di, bs_file_name + 12 161 0000004A 72F4 jb short _07 162 0000004C 803C20 cmp byte [si], 20h 163 0000004F 7742 ja short _14 164 _08: 165 00000051 28C0 sub al, al 166 00000053 AA stosb 167 168 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 169 ; File name capitalization 170 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 171 172 00000054 BE[2006] mov si, bs_file_name 173 00000057 89F7 mov di, si 174 00000059 89F3 mov bx, si 175 _09: 176 0000005B AC lodsb 177 0000005C 3C61 cmp al, 'a' 178 0000005E 730D jnb short _11 179 00000060 20C0 and al, al 180 00000062 7412 jz short _12 181 00000064 3C2E cmp al, '.' 182 00000066 7502 jne short _10 183 00000068 89FB mov bx, di ; dot position 184 _10: 185 0000006A AA stosb 186 0000006B EBEE jmp short _09 187 _11: 188 0000006D 3C7A cmp al, 'z' 189 0000006F 77F9 ja short _10 190 00000071 24DF and al, 0DFh ; NOT 32 191 00000073 AA stosb 192 00000074 EBE5 jmp short _09 193 _12: 194 00000076 8805 mov [di], al 195 00000078 4F dec di 196 00000079 39FB cmp bx, di 197 0000007B 7316 jnb short _14 198 0000007D 29DF sub di, bx 199 0000007F 81EB[2006] sub bx, bs_file_name 200 00000083 83FF03 cmp di, 3 201 00000086 7606 jna short _13 202 00000088 21DB and bx, bx 203 0000008A 7507 jnz short _14 204 0000008C EB0B jmp short _15 205 _13: 206 0000008E 83FB08 cmp bx, 8 207 00000091 7606 jna short _15 208 _14: 209 00000093 BE[0104] mov si, msg_inv_file_name 210 00000096 E98601 jmp _43 211 212 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 213 ; Find boot sector backup file 214 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 215 216 _15: 217 00000099 BA[2006] mov dx, bs_file_name 218 0000009C B93F00 mov cx, 3Fh ; File Attributes 219 0000009F B44E mov ah, 4Eh ; MS-DOS Function = Find First File 220 000000A1 CD21 int 21h 221 000000A3 7306 jnc short _16 222 223 ; bs backup file not found in working/current directory 224 000000A5 BE[F704] mov si, msg_file_notfound 225 000000A8 E97401 jmp _43 226 227 _16: 228 229 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 230 ; Check bs backup file features 231 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 232 233 000000AB BE9500 mov si, DTA_Attrib 234 000000AE 8A04 mov al, [si] 235 ;and al, 1Fh ; directory, volume label, system, hidden, read only 236 000000B0 241E and al, 1Eh ; directory, volume label, system, hidden 237 000000B2 751D jnz short _18 238 000000B4 BE9A00 mov si, DTA_FileSize 239 000000B7 AD lodsw 240 000000B8 8B14 mov dx, [si] 241 000000BA 09C0 or ax, ax 242 000000BC 7413 jz short _18 ; zero file size (invalid backup file) 243 244 000000BE 21D2 and dx, dx 245 000000C0 750F jnz short _18 ; wrong file size (>1536 bytes) 246 247 000000C2 3D0004 cmp ax, 1024 248 000000C5 7410 je short _19 ; correct file size (for FAT16 & FAT12 boot sector) 249 250 000000C7 C606[6602]01 mov byte [fat32], 1 251 252 000000CC 3D0006 cmp ax, 1536 253 000000CF 7406 je short _19 ; correct file size (only for FAT32 boot sectors) 254 255 ; invalid backup file ! 256 _18: 257 000000D1 BE[6C05] mov si, msg_inv_backup_file 258 000000D4 E94801 jmp _43 259 260 _19: 261 262 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 263 ; Next line 264 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 265 266 ;mov si, CRLF 267 ;call print_msg 268 269 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 270 ; Read masterboot sector (MBR) 271 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 272 273 000000D7 BF0500 mov di, 5 274 275 ;mov ax, 0201h ; read disk 276 000000DA BB[3E06] mov bx, MasterBootBuff ; location of masterboot code 277 278 000000DD B90100 mov cx, 1 ; cylinder = 0 279 ; sector = 1 280 000000E0 B600 mov dh, 0 ; head = 0 281 000000E2 8A16[6502] mov dl, [DrvNum] ; drive number, 80h .. 83h 282 _20: 283 000000E6 B80102 mov ax, 0201h 284 000000E9 CD13 int 13h 285 000000EB 730D jnc short _21 ; read masterboot sector, OK 286 287 ; reset hard disk(s) 288 000000ED 30E4 xor ah, ah 289 ;mov dl, [drv] 290 000000EF CD13 int 13h 291 292 ;dec byte [RetryCount] 293 000000F1 4F dec di 294 000000F2 75F2 jnz short _20 295 296 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 297 ; write disk error message and terminate 298 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 299 300 000000F4 BE[2C05] mov si, msg_disk_not_ready_error 301 000000F7 E92501 jmp _43 302 _21: 303 304 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 305 ; Check MBR then read MBR & BS 306 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 307 308 000000FA 813E[3C08]55AA cmp word [MBIDCode], 0AA55h 309 00000100 7418 je short _24 ; Valid MBR 310 311 ; invalid MBR ! 312 313 00000102 BE[7604] mov si, msg_inv_mbr 314 00000105 E91701 jmp _43 315 _22: 316 ; Check fat32 boot sectors flag (for backup file) 317 00000108 803E[6602]01 cmp byte [fat32], 1 ; 2 boot sectors for FAT32 fs 318 0000010D 72C2 jb short _18 ; Invalid bs backup file ! 319 0000010F EB3E jmp short _29 320 _23: 321 ; Check fat32 boot sector(s) flag (for backup file) 322 00000111 803E[6602]01 cmp byte [fat32], 1 ; 1 bs for FAT16 & FAT12 fs 323 00000116 73B9 jnb short _18 ; Invalid bs backup file ! 324 00000118 EB35 jmp short _29 325 _24: 326 ; check if MBR contains primary DOS partition or not 327 0000011A BE[FC07] mov si, MasterBootBuff+pTableOffset 328 _25: 329 0000011D 8A4404 mov al, [si+ptFileSystemID] 330 ;xor ah, ah ; LBA = 0 331 00000120 3C0B cmp al, 0Bh ; FAT32 CHS 332 00000122 7215 jb short _27 333 00000124 74E2 je short _22 334 ;inc ah ; LBA = 1 335 00000126 3C0C cmp al, 0Ch ; FAT32 LBA 336 00000128 74DE je short _22 337 0000012A 3C0E cmp al, 0Eh ; FAT16 LBA 338 0000012C 74E3 je short _23 339 _26: 340 0000012E 81FE[3C08] cmp si, MasterBootBuff+pTableOffset+64 341 00000132 7315 jnb short _28 342 00000134 83C610 add si, 16 343 00000137 EBE4 jmp short _25 344 _27: 345 00000139 3C06 cmp al, 06h ; FAT16 CHS big 346 0000013B 77F1 ja short _26 347 0000013D 74D2 je short _23 348 0000013F 3C04 cmp al, 04h ; FAT16 CHS 349 00000141 74CE je short _23 350 00000143 3C01 cmp al, 01h ; FAT12 351 00000145 75E7 jne short _26 352 00000147 EBC8 jmp short _23 353 _28: 354 ; MBR does not contain primary DOS partition 355 00000149 BE[4304] mov si, msg_dosp_notfound 356 0000014C E9D000 jmp _43 357 _29: 358 ;mov [fsID], al ; file system type 359 360 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 361 ; copy partition table row which is for primary dos partition 362 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 363 364 0000014F BF[2E06] mov di, PTrow 365 ;mov cx, 8 366 00000152 B108 mov cl, 8 367 00000154 F3A5 rep movsw 368 369 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 370 ; read MBR in the backup file and compare it with disk's MBR 371 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 372 373 00000156 B8003D mov ax, 3D00h ; open file for read 374 00000159 BA[2006] mov dx, bs_file_name 375 0000015C CD21 int 21h 376 0000015E 7215 jc short _31 377 _30: 378 ;mov [bs_file_handle], ax 379 00000160 89C3 mov bx, ax 380 00000162 8B0E9A00 mov cx, [DTA_FileSize] ; read all bytes of the file 381 ;mov ax, 3F00h ; read from file 382 00000166 B43F mov ah, 3Fh 383 00000168 BA[3E06] mov dx, MasterBootBuff 384 0000016B CD21 int 21h 385 386 0000016D 9C pushf 387 0000016E B43E mov ah, 3Eh ; close file 388 ;mov bx, [bs_file_handle] 389 00000170 CD21 int 21h 390 00000172 9D popf 391 00000173 7306 jnc short _32 392 _31: 393 00000175 BE[1305] mov si, msg_file_read_error 394 00000178 E9A400 jmp _43 395 _32: 396 ; Check file's MBR 397 398 0000017B 813E[3C08]55AA cmp word [MBIDCode], 0AA55h 399 00000181 7406 je short _34 ; Valid MBR 400 _33: 401 ; invalid MBR ! 402 00000183 BE[B705] mov si, msg_inv_file_mbr 403 00000186 E99600 jmp _43 404 _34: 405 ;mov al, [fsID] 406 407 00000189 BE[2E06] mov si, PTrow 408 0000018C BF[FC07] mov di, MasterBootBuff+pTableOffset 409 410 0000018F 8A4404 mov al, [si+ptFileSystemID] 411 00000192 3A4504 cmp al, [di+ptFileSystemID] 412 00000195 75EC jne short _33 413 414 ; Check boot sector signature 415 416 00000197 BB[3E08] mov bx, BootSectorBuff 417 418 0000019A 81BFFE0155AA cmp word [bx+510], 0AA55h 419 000001A0 7405 je short _35 420 421 ; Invalid boot sector in file 422 000001A2 BE[F505] mov si, msg_inv_file_bs 423 000001A5 EB78 jmp short _43 424 425 _35: 426 000001A7 8B4508 mov ax, [di+ptStartSector] 427 000001AA 8B550A mov dx, [di+ptStartSector+2] 428 429 000001AD 3B4408 cmp ax, [si+ptStartSector] 430 000001B0 75D1 jne short _33 431 432 000001B2 3B540A cmp dx, [si+ptStartSector+2] 433 000001B5 75CC jne short _33 434 435 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 436 ; Disk write (bs overwrite) question and get the answer (Y/N/ESC) 437 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 438 439 000001B7 BE[8804] mov si, msg_overwrite_question 440 000001BA E89A00 call print_msg 441 _36: 442 000001BD 31C0 xor ax, ax 443 000001BF CD16 int 16h ; wait for keyboard command 444 000001C1 3C79 cmp al, 'y' 445 000001C3 7419 je short _38 ; retry 446 000001C5 3C59 cmp al, 'Y' 447 000001C7 7415 je short _38 448 000001C9 3C6E cmp al, 'n' 449 000001CB 740C je short _37 ; exit 450 000001CD 3C4E cmp al, 'N' 451 000001CF 7408 je short _37 452 000001D1 3C03 cmp al, 'C'-40h 453 000001D3 7442 je short _41 454 000001D5 3C1B cmp al, 27 455 000001D7 75E4 jne short _36 456 _37: 457 000001D9 BE[B804] mov si, _NO 458 000001DC EB41 jmp short _43 459 _38: 460 000001DE BE[B204] mov si, _YES 461 000001E1 E87300 call print_msg 462 463 000001E4 BE[BD04] mov si, msg_writing_bs 464 000001E7 E86D00 call print_msg 465 466 000001EA 8B4508 mov ax, [di+ptStartSector] 467 ;mov dx, [di+ptStartSector+2] 468 000001ED BB[3E08] mov bx, BootSectorBuff 469 _39: 470 471 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 472 ; Write boot sector(s) to disk 473 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 474 475 000001F0 E83600 call lba_write 476 000001F3 7217 jc short _40 477 478 000001F5 803E[6602]01 cmp byte [fat32], 1 479 000001FA 7520 jne short _42 480 000001FC 83C002 add ax, 2 ; Second part of 1024 bytes boot sector 481 000001FF 83D200 adc dx, 0 ; just after FSINFO sector 482 00000202 BB[3E0A] mov bx, BootSectorBuff+512 483 00000205 C606[6602]02 mov byte [fat32], 2 484 0000020A EBE4 jmp short _39 485 _40: 486 ; disk write error 487 0000020C BE[F404] mov si, CRLF 488 0000020F E84500 call print_msg 489 00000212 BE[5505] mov si, msg_disk_write_error 490 00000215 EB08 jmp short _43 491 _41: 492 ; nothing to do ! 493 00000217 BE[F404] mov si, CRLF 494 0000021A EB03 jmp short _43 495 _42: 496 ; disk (bs) writing is OK. 497 0000021C BE[F004] mov si, msg_OK 498 _43: 499 0000021F E83500 call print_msg 500 501 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 502 ; Exit 503 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 504 505 00000222 B8004C mov ax, 4C00h ; terminate 506 00000225 CD21 int 21h 507 _44: 508 00000227 EBFE jmp short _44 509 510 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 511 ; LBA read (read one sector) 512 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 513 514 ;lba_read: 515 ; mov [rw], 42h 516 ; jmp short lba_rw 517 518 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 519 ; LBA write (write one sector) 520 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 521 522 lba_write: 523 ;mov byte [rw], 43h 524 ;jmp short lba_rw 525 526 ;lba_read: 527 lba_rw: 528 00000229 BF0500 mov di, 5 529 lba_rw_1: 530 ;pusha ; db 60h 531 0000022C 60 db 60h 532 ;push 0 ; db 6Ah, 00h 533 0000022D 6A00 db 6Ah, 0 534 ;push 0 ; db 6Ah, 00h 535 0000022F 6A00 db 6Ah, 0 536 00000231 52 push dx 537 00000232 50 push ax 538 00000233 06 push es 539 00000234 53 push bx 540 ;push 1 ; db 6Ah, 01h 541 00000235 6A01 db 6Ah, 01h 542 ;push 10h ; db 6Ah, 10h 543 00000237 6A10 db 6Ah, 10h 544 545 00000239 89E6 mov si, sp 546 0000023B 8A16[6502] mov dl, [DrvNum] 547 0000023F 30C0 xor al, al ; verify off (for LBA write) 548 lba_rw_2: 549 ;mov ah, [rw] ; LBA read/write 550 ;xor al, al ; verify off 551 00000241 B443 mov ah, 43h 552 00000243 CD13 int 13h 553 554 ;mov [error], ah 555 00000245 730D jnc short lba_rw_3 556 557 00000247 4F dec di 558 00000248 740A jz short lba_rw_3 559 560 0000024A 30E4 xor ah, ah 561 ;mov dl, [DrvNum] 562 0000024C CD13 int 13h ; BIOS Service func (ah) = 0 563 ; Reset disk system 564 565 ;mov word [si+2], 1 ; set r/w count to 1 again 566 0000024E C6440201 mov byte [si+2], 1 567 568 00000252 EBED jmp short lba_rw_2 569 570 lba_rw_3: 571 ;popa 572 00000254 61 db 61h 573 ;popa 574 00000255 61 db 61h 575 576 _retn: 577 00000256 C3 retn 578 579 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 580 ; print message 581 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 582 583 print_msg: 584 00000257 AC lodsb ; Load byte at DS:SI to AL 585 00000258 20C0 and al, al 586 0000025A 74FA jz short _retn 587 0000025C B40E mov ah, 0Eh 588 0000025E BB0700 mov bx, 07h 589 00000261 CD10 int 10h ; BIOS Service func ( ah ) = 0Eh 590 ; Write char as TTY 591 ; AL-char BH-page BL-color 592 00000263 EBF2 jmp short print_msg 593 594 ;============================================================================= 595 ; initialized data 596 ;============================================================================= 597 598 ;rw: db 42h ; LBA read (default) 599 600 DrvNum: 601 00000265 00 db 0 602 fat32: 603 00000266 00 db 0 604 605 ;align 2 606 607 ;bs_file_handle: 608 ; dw 0 609 610 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 611 ; Messages 612 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 613 614 TrDOS_Welcome: 615 00000267 0D0A db 0Dh, 0Ah 616 00000269 5072696D6172792044- db "Primary DOS Partition Boot Sector Restore Utility for TR-DOS 386" 616 00000272 4F5320506172746974- 616 0000027B 696F6E20426F6F7420- 616 00000284 536563746F72205265- 616 0000028D 73746F726520557469- 616 00000296 6C69747920666F7220- 616 0000029F 54522D444F53203338- 616 000002A8 36 617 000002A9 0D0A db 0Dh, 0Ah 618 000002AB 76312E302E31303130- db "v1.0.101020 (c) Erdogan TAN 2020" 618 000002B4 323020286329204572- 618 000002BD 646F67616E2054414E- 618 000002C6 2032303230 619 000002CB 0D0A db 0Dh, 0Ah 620 000002CD 0D0A db 0Dh, 0Ah 621 000002CF 55736167653A206273- db "Usage: bsrestor " 621 000002D8 726573746F72203C64- 621 000002E1 69736B206472697665- 621 000002EA 206E616D653E203C62- 621 000002F3 61636B75702066696C- 621 000002FC 65206E616D653E 622 00000303 0D0A db 0Dh, 0Ah 623 00000305 0D0A db 0Dh, 0Ah 624 00000307 4469736B2064726976- db "Disk drive names: " 624 00000310 65206E616D65733A20 625 00000319 0D0A db 0Dh, 0Ah 626 0000031B 0D0A db 0Dh, 0Ah 627 0000031D 20686430202E2E666F- db " hd0 ..for primary dos partition on 1st disk " 627 00000326 72207072696D617279- 627 0000032F 20646F732070617274- 627 00000338 6974696F6E206F6E20- 627 00000341 317374206469736B20 628 0000034A 0D0A db 0Dh, 0Ah 629 0000034C 20686431202E2E666F- db " hd1 ..for primary dos partition on 2nd disk " 629 00000355 72207072696D617279- 629 0000035E 20646F732070617274- 629 00000367 6974696F6E206F6E20- 629 00000370 326E64206469736B20 630 00000379 0D0A db 0Dh, 0Ah 631 0000037B 20686432202E2E666F- db " hd2 ..for primary dos partition on 3rd disk " 631 00000384 72207072696D617279- 631 0000038D 20646F732070617274- 631 00000396 6974696F6E206F6E20- 631 0000039F 337264206469736B20 632 000003A8 0D0A db 0Dh, 0Ah 633 000003AA 20686433202E2E666F- db " hd3 ..for primary dos partition on 4th disk " 633 000003B3 72207072696D617279- 633 000003BC 20646F732070617274- 633 000003C5 6974696F6E206F6E20- 633 000003CE 347468206469736B20 634 000003D7 0D0A0D0A db 0Dh, 0Ah, 0Dh, 0Ah 635 000003DB 4578616D706C653A20- db "Example: bsrestor hd0 bsbackup.bin " 635 000003E4 6273726573746F7220- 635 000003ED 686430206273626163- 635 000003F6 6B75702E62696E20 636 000003FE 0D0A00 db 0Dh, 0Ah, 0 637 638 msg_inv_file_name: 639 00000401 0D0A db 0Dh, 0Ah 640 00000403 496E76616C69642066- db "Invalid file name !", 0Dh, 0Ah 640 0000040C 696C65206E616D6520- 640 00000415 210D0A 641 00000418 2846696C65206E616D- db "(File name must fit to 8.3 DOS format) !" 641 00000421 65206D757374206669- 641 0000042A 7420746F20382E3320- 641 00000433 444F5320666F726D61- 641 0000043C 74292021 642 00000440 0D0A00 db 0Dh, 0Ah, 0 643 644 msg_dosp_notfound: 645 00000443 0D0A db 0Dh, 0Ah 646 00000445 4D425220646F657320- db "MBR does not contain a primary DOS partition !" 646 0000044E 6E6F7420636F6E7461- 646 00000457 696E2061207072696D- 646 00000460 61727920444F532070- 646 00000469 6172746974696F6E20- 646 00000472 21 647 00000473 0D0A db 0Dh, 0Ah 648 00000475 00 db 0 649 650 msg_inv_mbr: 651 00000476 0D0A db 0Dh, 0Ah 652 00000478 496E76616C6964204D- db "Invalid MBR !" 652 00000481 42522021 653 00000485 0D0A00 db 0Dh, 0Ah, 0 654 655 msg_overwrite_question: 656 00000488 0D0A db 0Dh, 0Ah 657 0000048A 446F20796F75207761- db "Do you want to overwrite boot sector ? " 657 00000493 6E7420746F206F7665- 657 0000049C 72777269746520626F- 657 000004A5 6F7420736563746F72- 657 000004AE 203F20 658 000004B1 00 db 0 659 660 000004B2 594553 _YES: db "YES" 661 000004B5 0D0A00 db 0Dh, 0Ah, 0 662 663 000004B8 4E4F _NO: db "NO" 664 000004BA 0D0A00 db 0Dh, 0Ah, 0 665 666 msg_writing_bs: 667 000004BD 0D0A db 0Dh, 0Ah 668 000004BF 57726974696E672070- db "Writing primary dos partition's boot sector ... " 668 000004C8 72696D61727920646F- 668 000004D1 732070617274697469- 668 000004DA 6F6E277320626F6F74- 668 000004E3 20736563746F72202E- 668 000004EC 2E2E20 669 000004EF 00 db 0 670 msg_OK: 671 000004F0 204F4B2E db ' OK.' 672 CRLF: 673 000004F4 0D0A00 db 0Dh, 0Ah, 0 674 675 msg_file_notfound: 676 000004F7 0D0A db 0Dh, 0Ah 677 000004F9 4261636B7570206669- db "Backup file not found !" 677 00000502 6C65206E6F7420666F- 677 0000050B 756E642021 678 00000510 0D0A00 db 0Dh, 0Ah, 0 679 680 msg_file_read_error: 681 00000513 0D0A db 0Dh, 0Ah 682 00000515 46696C652072656164- db "File reading error !" 682 0000051E 696E67206572726F72- 682 00000527 2021 683 00000529 0D0A00 db 0Dh, 0Ah, 0 684 685 msg_disk_not_ready_error: 686 0000052C 0D0A db 0Dh, 0Ah 687 0000052E 4469736B2072656164- db "Disk read error or drive not ready !" 687 00000537 206572726F72206F72- 687 00000540 206472697665206E6F- 687 00000549 742072656164792021 688 00000552 0D0A00 db 0Dh, 0Ah, 0 689 690 msg_disk_write_error: 691 00000555 0D0A db 0Dh, 0Ah 692 00000557 4469736B2077726974- db "Disk write error !" 692 00000560 65206572726F722021 693 00000569 0D0A00 db 0Dh, 0Ah, 0 694 695 msg_inv_backup_file: 696 0000056C 0D0A db 0Dh, 0Ah 697 0000056E 496E76616C69642062- db "Invalid backup file !", 0Dh, 0Ah 697 00000577 61636B75702066696C- 697 00000580 6520210D0A 698 00000585 28496D70726F706572- db "(Improper file attributes or wrong file size) !" 698 0000058E 2066696C6520617474- 698 00000597 72696275746573206F- 698 000005A0 722077726F6E672066- 698 000005A9 696C652073697A6529- 698 000005B2 2021 699 000005B4 0D0A00 db 0Dh, 0Ah, 0 700 701 msg_inv_file_mbr: 702 000005B7 0D0A db 0Dh, 0Ah 703 000005B9 496E76616C69642062- db "Invalid backup file !", 0Dh, 0Ah 703 000005C2 61636B75702066696C- 703 000005CB 6520210D0A 704 000005D0 28496D70726F706572- db "(Improper/Different/Invalid MBR) !" 704 000005D9 2F446966666572656E- 704 000005E2 742F496E76616C6964- 704 000005EB 204D4252292021 705 000005F2 0D0A00 db 0Dh, 0Ah, 0 706 707 msg_inv_file_bs: 708 000005F5 0D0A db 0Dh, 0Ah 709 000005F7 496E76616C69642062- db "Invalid backup file !", 0Dh, 0Ah 709 00000600 61636B75702066696C- 709 00000609 6520210D0A 710 0000060E 28496E76616C696420- db "(Invalid BS) !" 710 00000617 4253292021 711 0000061C 0D0A00 db 0Dh, 0Ah, 0 712 713 SizeOfFile equ $-100 714 715 ;============================================================================= 716 ; uninitialized data 717 ;============================================================================= 718 719 bss_start: 720 721 ABSOLUTE bss_start 722 723 0000061F ?? alignb 2 724 725 bs_file_name: 726 00000620 resb 13 727 0000062D ?? resb 1 ; word alignment 728 729 bss_clear_end: 730 731 PTrow: 732 0000062E resb 16 733 734 ;alignb 2 735 736 ; Masterboot sector (MBR) 737 738 MasterBootBuff: 739 MasterBootCode: 740 0000063E resb 446 741 PartitionTable: 742 000007FC resb 64 743 MBIDCode: 744 0000083C ???? resw 1 745 746 BootSectorBuff: 747 0000083E resb 512 748 BootSectorBuff2: 749 00000A3E resb 512 ; FAT32 fs boot sector buffer, 2nd part 750 751 bss_end: