This is x86, 16-bit, under DOS.
0100 B50D mov ch, 0d
0102 BD29D2 mov bp, d229
0105 8BF9 mov di, cx
0107 51 push cx
0108 AD lodsw
0109 F7F5 div bp
010B AB stosw
010C E2FA loop 0108
010E 5E pop si
010F 8BCE mov cx, si
0111 FF04 inc word ptr [si]
0113 4D dec bp
0114 75ED jnz 0103
0116 AD lodsw
0117 B310 mov bl, 10
0119 D1C0 rol ax, 1
011B 50 push ax
011C 2401 and al, 01
011E 0430 add al, 30
0120 CD29 int 29
0122 58 pop ax
0123 4B dec bx
0124 75F3 jnz 0119
0126 E2EE loop 0116
0128 C3 retNote: Under DOS, interrupt 29 prints the ASCII char in the AL register. The rest of it should be platform independent.
Try to run it (in debug.exe or using whatever other method).
The riddle is: What is the meaning of its output?
Before someone "corrects" me: Yes, the instruction at address 0114 is correct.
Enjoy.
Solved [Adron].
Anyone else? :)
Would I be correct in saying D2 is a rotate instruction? I can't remember????
Use an assembler or a x86 reference (http://www.valhallalegends.com/files/386INTEL.txt) to check.