From: nowhere@never.at   
      
    Kerr-Mudd,John wrote:   
      
   >>> Having belatedly discovered GNU's xxd with it's -r option,   
   >>> I've done a version for DOS.   
      
   >>> If you can get the body of the hex into a com file, you can run the   
   >>> program so you never need to do it again, IYSWIM. Caters for both MS   
   >>> debug and grdb.   
      
   >>> Uses DOS redirection, so not much use to you, Wolfgang.   
   >>> (might wrap, lines are 78 long)   
      
   >> Yes even it doesn't make any sense for me, I couldn't resist to spend   
   >> 1/4h to translate it just for fun... and I see many branches here :)   
      
   > Well here's a version that allows for larger files.   
   > (it checks for a full line to 0A before processing it; if a partial line   
   > it copies the part line and reads another buffer amount; oflw of the   
   > output buffer similarly triggers a write). I could save the duplicate   
   > read at the expense of a check on each line)   
      
   DOS.com files occupy full 64KB (code, PSP and stack are lost for data).   
   A common trick to work with a total of 64KB Data is to move the stack   
   down (towards your code) and adjust DS/ES to point right after SS-top.   
      
   if your code + PSP + stack fit 0x400 bytes then I'd use   
   (perhaps better after cmdline check and text display)   
      
     mov sp,0x400  ;assume SS=CS   
     mov ax,cs     ;0x168d   
     add ax,0x40   ;0x16cd == 168d:0400   
     mov ds,ax     ;full 64K free there (ie source)   
     add ax,0x1000 ;0x26cd   
     mov es,ax     ;and another free 64KB here (ie destin).   
      
   not to mention that FS and GS are available too ...   
   __   
   wolfgang   
      
   havent checked this because I have no clue what it shall do :)   
      
   > 168D:0100 BA D9 01       mov          dx,01D9   
   > 168D:0103 81 3E 82 00 2D cmp          word [0082],682D   
   >          68   
   > 168D:0109 74 6E          jz           0179   
   > 168D:010B BE 32 D5       mov          si,D532   
   > 168D:010E BA 00 02       mov          dx,0200   
   > 168D:0111 B9 37 D3       mov          cx,D337   
   > 168D:0114 31 DB          xor          bx,bx   
   > 168D:0116 B4 3F          mov          ah,3F   
   > 168D:0118 CD 21          int          21   
   > 168D:011A 89 D7          mov          di,dx   
   > 168D:011C 91             xchg         ax,cx   
   > 168D:011D E3 57          jcxzw        0176   
   > 168D:011F B0 2D          mov          al,2D   
   > 168D:0121 AE             scasb   
   > 168D:0122 74 04          jz           0128   
   > 168D:0124 B0 3E          mov          al,3E   
   > 168D:0126 F2 AE          repnz scasb   
   > 168D:0128 80 3D 64       cmp          byte [di],64   
   > 168D:012B 75 49          jnz          0176   
   > 168D:012D B0 3A          mov          al,3A   
   > 168D:012F F2 AE          repnz scasb   
   > 168D:0131 75 56          jnz          0189   
   > 168D:0133 B0 20          mov          al,20   
   > 168D:0135 F2 AE          repnz scasb   
   > 168D:0137 B3 31          mov          bl,31   
   > 168D:0139 8A 05          mov          al,[di]   
   > 168D:013B 47             inc          di   
   > 168D:013C 3C 30          cmp          al,30   
   > 168D:013E 72 2F          jb           016F   
   > 168D:0140 24 4F          and          al,4F   
   > 168D:0142 D4 37          aam          37   
   > 168D:0144 80 F2 01       xor          dl,01   
   > 168D:0147 75 05          jnz          014E   
   > 168D:0149 4E             dec          si   
   > 168D:014A 8A 24          mov          ah,[si]   
   > 168D:014C D5 10          aad          10   
   > 168D:014E 88 04          mov          [si],al   
   > 168D:0150 46             inc          si   
   > 168D:0151 75 1C          jnz          016F   
   > 168D:0153 80 FA 01       cmp          dl,01   
   > 168D:0156 74 E1          jz           0139   
   > 168D:0158 53             push         bx   
   > 168D:0159 51             push         cx   
   > 168D:015A 52             push         dx   
   > 168D:015B B3 01          mov          bl,01   
   > 168D:015D BA 32 D5       mov          dx,D532   
   > 168D:0160 89 F1          mov          cx,si   
   > 168D:0162 89 D6          mov          si,dx   
   > 168D:0164 29 D1          sub          cx,dx   
   > 168D:0166 B4 40          mov          ah,40   
   > 168D:0168 CD 21          int          21   
   > 168D:016A 5A             pop          dx   
   > 168D:016B 59             pop          cx   
   > 168D:016C 5B             pop          bx   
   > 168D:016D E3 13          jcxzw        0182   
   > 168D:016F 4B             dec          bx   
   > 168D:0170 74 11          jz           0183   
   > 168D:0172 E2 C5          loopw        0139   
   > 168D:0174 EB 31          jmp          01A7   
   > 168D:0176 BA CB 01       mov          dx,01CB   
   > 168D:0179 B4 09          mov          ah,09   
   > 168D:017B CD 21          int          21   
   > 168D:017D B8 01 4C       mov          ax,4C01   
   > 168D:0180 CD 21          int          21   
   > 168D:0182 C3             ret   
   > 168D:0183 B0 0A          mov          al,0A   
   > 168D:0185 F2 AE          repnz scasb   
   > 168D:0187 75 1E          jnz          01A7   
   > 168D:0189 E3 CD          jcxzw        0158   
   > 168D:018B 51             push         cx   
   > 168D:018C 57             push         di   
   > 168D:018D B0 0A          mov          al,0A   
   > 168D:018F F2 AE          repnz scasb   
   > 168D:0191 5F             pop          di   
   > 168D:0192 59             pop          cx   
   > 168D:0193 74 98          jz           012D   
   > 168D:0195 80 FE 00       cmp          dh,00   
   > 168D:0198 74 93          jz           012D   
   > 168D:019A 51             push         cx   
   > 168D:019B 56             push         si   
   > 168D:019C 89 FE          mov          si,di   
   > 168D:019E BF 00 02       mov          di,0200   
   > 168D:01A1 F3 A4          repz movsb   
   > 168D:01A3 5E             pop          si   
   > 168D:01A4 59             pop          cx   
   > 168D:01A5 89 FA          mov          dx,di   
   > 168D:01A7 80 FE 00       cmp          dh,00   
   > 168D:01AA 74 AC          jz           0158   
   > 168D:01AC 51             push         cx   
   > 168D:01AD B9 37 D3       mov          cx,D337   
   > 168D:01B0 53             push         bx   
   > 168D:01B1 31 DB          xor          bx,bx   
   > 168D:01B3 B4 3F          mov          ah,3F   
   > 168D:01B5 CD 21          int          21   
   > 168D:01B7 BA 00 02       mov          dx,0200   
   > 168D:01BA 89 D7          mov          di,dx   
   > 168D:01BC 91             xchg         ax,cx   
   > 168D:01BD 09 C9          or           cx,cx   
   > 168D:01BF 75 02          jnz          01C3   
   > 168D:01C1 B6 00          mov          dh,00   
   > 168D:01C3 5B             pop          bx   
   > 168D:01C4 58             pop          ax   
   > 168D:01C5 01 C1          add          cx,ax   
   > 168D:01C7 E3 8F          jcxzw        0158   
   > 168D:01C9 EB BE          jmp          0189   
   >      1CB 'Not dbg dump',0x0D,0x0A   
   >      1D9 'Usage is: xxd-rcomfile',0x0D,0x0A,'$'   
   >   
   > --   
   > Bah, and indeed, Humbug.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)