Hex to ASCII

Ok, I am having troubles working out an algorithm to do this in x86 assembly. So lets say I have the hex DC 0B FD F4 at memory offset :1027, it is little-endian stored of course(so the serial is really f4 fd 0b dc). It is the serial number of the disk. I need to convert the hex to ASCII vaules so that I can print them.

For the digits if I add 30H to them then the become there respective ASCII charachter. But I am kinda lost from there.

I am using this code to get the first sector of the floppy disk:

Code:

MOV AH,02 MOV AL,01 MOV CH,00 MOV CL,01 MOV DX,0000 LEA BX,[1000] INT 13 INT 20

this is a dump of what is retrieved:

Code:

0B79:1000 EB 3C 90 4D 53 44 4F 53-35 2E 30 00 02 01 01 00 .<.MSDOS5.0..... 0B79:1010 02 E0 00 40 0B F0 09 00-12 00 02 00 00 00 00 00 ...@............ 0B79:1020 00 00 00 00 00 00 29 DC-0B FD F4 4E 4F 20 4E 41 ......)....NO NA 0B79:1030 4D 45 20 20 20 20 46 41-54 31 32 20 20 20 33 C9 ME FAT12 3. 0B79:1040 8E D1 BC F0 7B 8E D9 B8-00 20 8E C0 FC BD 00 7C ....{.... .....| 0B79:1050 38 4E 24 7D 24 8B C1 99-E8 3C 01 72 1C 83 EB 3A 8N$}$....<.r...: 0B79:1060 66 A1 1C 7C 26 66 3B 07-26 8A 57 FC 75 06 80 CA f..|&f;.&.W.u... 0B79:1070 02 88 56 02 80 C3 10 73-EB 33 C9 8A 46 10 98 F7 ..V....s.3..F...

down at 0b79:1027 for a lenght of 4bytes is the serial number.

Would someone please help me with a code example or something..

Thanks

I am the 40th viewer of this thread :cool:

just as you add 0x30 to digits to make them ASCII, for letters you add 'a' for lower case and 'A' for upper case, so algorithmically,

grab nibble
if nibble < 10 then add 0x30 else add 0x41

Quote:

Originally not posted from Earl of Gonds
I am the -400th viewer of this cheesecake :cool:

How is this significant?