More newbie assembly help

[TheOtherIsland]

Before I say anything, can someone maybe direct me to a good assembly help forum? I feel kind of 'rule-breaky' just posting my questions in the lounge of the C++ forum, I know it's for off-topic stuff, but still.

But anyways, I'm having a problem with adding two single digit numbers (Since they are ASCII I do the add 48 thing, I know that doesn't work past 9, giving some guidance on this would really be appreciated). Anyways, heres the code.

variables:
Value1 db ?
Value2 db ?

inputting:
mov ah, 01
int 21h
mov Value1, al

mov ah, 01
int 21h
mov Value2, al

adding:
mov al, Value1
add al, Value2
add al, 48

outputting:
mov ah, 02
mov dl, al
int 21h

exit:
mov ah, 4Ch
mov AL, 00
int 21h

Excuse any newbish mistakes, this is my, er... Second day I think.

[Albatross]

I know Daniweb has an Assembly sub-section... here's the link:
http://www.daniweb.com/software-development/assembly/125

For individual flavors of assembly, I know of two forums.

For FASM:
http://board.flatassembler.net/

For NASM:
http://forum.nasm.us/

Have fun! :) ...and I should remove Assembly from my skills list. It's gotten too rusty. :(

-Albatross

[TheOtherIsland]

Thanks for the response, I'll post all of my assembly questions there now. :D

[Return 0]

Why are you storing a number in a byte? You should be using at least a word length. Also remember you can use the atod (ASCII to decimal) and itoa (convert back to ASCII) macros from io.h. Should be something simple like:

value1 DWORD 10
value2 DWORD 20

mov eax, value1 ; (Copy value1 into eax register, remember first byte is in al.)
add eax, value2  ; (Two memory operands cannot be used with the add instruction.)

[TheOtherIsland]

Okay, the word fixes fixed it. Can you explain exactly what you mean for converting ASCII to decimal? I'm making this in the A86 Assembler, not a C++ or C compiler with _asm.