From: nowhere@never.at   
      
   Kerr-Mudd,John wrote:   
      
   >>>> Criticisms welcome:   
      
   >> seems you like to test my abilities at the end of holydays, let me   
   >> check how long it takes me to figure by only using my brain :)   
      
   > Sorry, I only post when I'm reasonably happy with what I've got so far,   
   > not to vex you!   
      
   :) I have much fun with hex-anal-ice.   
      
   > But I did throw in the exponentiation at the last minute as I   
   > had about 20 bytes leftover.   
   > The "test for operator" is "if x jmp code", as a table lookup worked out at   
   > a few bytes longer. Adding AND XOR OR NOT would make it worthwhile, but   
   > then I've blown my self-imposed 256 byte limit.   
      
   Yeah, a LUT would be overkill. A bit reordering and CMOVcc, SETcc could   
   save some jumps.   
   I know you are after shortest solution, so slow and ugly dont care :)   
      
   > try again:   
   >   
   > minicalc.com   
      
   > BE8000AC9891E88D00724A954EAC3C20E1FB744150E87E0092587239982C2574   
   > 393C0674123C0874133C0574143C0A74293CFE7411EB1E9501D0EB2B9529D0EB   
   > 2695F7E2EB2189E85189D149F7E57205E2FA59EB12BAD001EB375389D39995F7   
   > F35B454D750192BFF901B16880FB10740AB12B09C07904F7D8B12D31D2F7F392   
   > 3C0A1C692F88054F9209C075EE880D575AB409CD21C3AC3C20E1FB7430BB0A00   
   > 3C687503B310AC55523C2D9C74014E31EDAC3C30720E244FD4379895F7E3720D   
   > 01C5E2ED959D7502F7D85A5DC358EBFA55736167652069733A2063616C63206E   
   > 756D31205B2B2D2A2F25235D206E756D320D0A242D242424242424   
   > (that's 3 less!)   
      
   good that you got rid of the 5-byte Jcc.   
   have you ever used the four byte Jcc 0f8x..?   
      
   > ->u100 l100   
   > 161D:0100 BE 80 00       mov          si,0080   
   > 161D:0103 AC             lodsb   
   > 161D:0104 98             cbw   
   > 161D:0105 91             xchg         ax,cx   
   > 161D:0106 E8 8F 00       call         0198   ; getnum   
   > 161D:0109 72 4C          jb           0157   
   > 161D:010B 95             xchg         ax,bp   
   > 161D:010C 4E             dec          si   
   > 161D:010D AC             lodsb   
   > 161D:010E 3C 20          cmp          al,20   
   > 161D:0110 E1 FB          loopzw       010D   
   > 161D:0112 74 43          jz           0157   
   > 161D:0114 50             push         ax     ; save operator   
   > 161D:0115 E8 80 00       call         0198   ; getnum   
   > 161D:0118 92             xchg         ax,dx   
   > 161D:0119 58             pop          ax   
   > 161D:011A 72 3B          jb           0157   
   > testop:   
   > 161D:011C 98             cbw   
   > 161D:011D 2C 25          sub          al,25   
   > 161D:011F 74 3B          jz           015C   
   > 161D:0121 3C 06          cmp          al,06   
   > 161D:0123 74 12          jz           0137   
   > 161D:0125 3C 08          cmp          al,08   
   > 161D:0127 74 13          jz           013C   
   > 161D:0129 3C 05          cmp          al,05   
   > 161D:012B 74 14          jz           0141   
   > 161D:012D 3C 0A          cmp          al,0A   
   > 161D:012F 74 2B          jz           015C   
   > 161D:0131 3C FE          cmp          al,FE   
   > 161D:0133 74 11          jz           0146   
   > 161D:0135 EB 20          jmp          0157   
   > addnums:   
   > 161D:0137 95             xchg         ax,bp   
   > 161D:0138 01 D0          add          ax,dx   
   > 161D:013A EB 2D          jmp          0169   
   > subnums:   
   > 161D:013C 95             xchg         ax,bp   
   > 161D:013D 29 D0          sub          ax,dx   
   > 161D:013F EB 28          jmp          0169   
   > mulnums:   
   > 161D:0141 95             xchg         ax,bp   
   > 161D:0142 F7 E2          mul          dx   
   > 161D:0144 EB 23          jmp          0169   
   > expnums:   
   > 161D:0146 89 E8          mov          ax,bp   
   > 161D:0148 51             push         cx   
   > 161D:0149 89 D1          mov          cx,dx   
   > 161D:014B 49             dec          cx   
   > 161D:014C F7 E5          mul          bp   
   > 161D:014E 09 D2          or           dx,dx   
   > 161D:0150 75 05          jnz          0157   
   > 161D:0152 E2 F8          loopw        014C   
   > 161D:0154 59             pop          cx   
   > 161D:0155 EB 12          jmp          0169   
   > prtusage:   
   > 161D:0157 BA D2 01       mov          dx,01D2   
   > 161D:015A EB 37          jmp          0193   
   > divmodnums:   
   > 161D:015C 53             push         bx   
   > 161D:015D 89 D3          mov          bx,dx   
   > 161D:015F 99             cwd   
   > 161D:0160 95             xchg         ax,bp   
   > 161D:0161 F7 F3          div          bx   
   > 161D:0163 5B             pop          bx   
   > 161D:0164 45             inc          bp   
   > 161D:0165 4D             dec          bp   
   > 161D:0166 75 01          jnz          0169   ; if mod prt dx   
   > 161D:0168 92             xchg         ax,dx   
   >   
   > prtnum:   
   > 161D:0169 BF FB 01       mov          di,01FB   
   > 161D:016C B1 68          mov          cl,68   
   > 161D:016E 80 FB 10       cmp          bl,10   
   > 161D:0171 74 0A          jz           017D   
   > 161D:0173 B1 2B          mov          cl,2B   
   > 161D:0175 09 C0          or           ax,ax   
   > 161D:0177 79 04          jns          017D   
   > 161D:0179 F7 D8          neg          ax   
   > 161D:017B B1 2D          mov          cl,2D   
   > 161D:017D 31 D2          xor          dx,dx   
   > 161D:017F F7 F3          div          bx   
   > 161D:0181 92             xchg         ax,dx   
   > 161D:0182 3C 0A          cmp          al,0A   
   > 161D:0184 1C 69          sbb          al,69   
   > 161D:0186 2F             das   
   > 161D:0187 88 05          mov          [di],al   
   > 161D:0189 4F             dec          di   
   > 161D:018A 92             xchg         ax,dx   
   > 161D:018B 09 C0          or           ax,ax   
   > 161D:018D 75 EE          jnz          017D   
   > 161D:018F 88 0D          mov          [di],cl   
   > 161D:0191 57             push         di   
   > 161D:0192 5A             pop          dx   
   > 161D:0193 B4 09          mov          ah,09   
   > 161D:0195 CD 21          int          21   
   > 161D:0197 C3             ret   
   > getnum:   
   > 161D:0198 AC             lodsb   
   > 161D:0199 3C 20          cmp          al,20   
   > 161D:019B E1 FB          loopzw       0198   
   > 161D:019D 74 30          jz           01CF   
   > 161D:019F BB 0A 00       mov          bx,000A  ; assume decimal   
   > 161D:01A2 3C 68          cmp          al,68    ; 'h'   
   > 161D:01A4 75 03          jnz          01A9   
   > 161D:01A6 B3 10          mov          bl,10    ; is hex   
   > 161D:01A8 AC             lodsb   
   > 161D:01A9 55             push         bp   
   > 161D:01AA 52             push         dx   
   > 161D:01AB 3C 2D          cmp          al,2D    ; -ve?   
   > 161D:01AD 9C             pushfw   
   > 161D:01AE 74 01          jz           01B1   
   > 161D:01B0 4E             dec          si       ;not minus, go back a char   
   > 161D:01B1 31 ED          xor          bp,bp   
   > 161D:01B3 AC             lodsb   
   > 161D:01B4 3C 30          cmp          al,30   
   > 161D:01B6 72 0E          jb           01C6     ; end on <0   
   > 161D:01B8 24 4F          and          al,4F    ; hex2bin   
   > 161D:01BA D4 37          aam          37   
   > 161D:01BC 98             cbw   
   > 161D:01BD 95             xchg         ax,bp   
   > 161D:01BE F7 E3          mul          bx   
      
   [continued in next message]   
      
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