>Does anyone have an asm snipet that converts an 8 bit value from degrees
>C to degree F?

I don't have it right here.  But if you consider the following the code is easy.

F = 9/5 * C + 32;

F = 2C - 1/4C + 1/8C - 1/16C + 32;   (approximately and it is good enough.)

F = (C << 1) - (C >> 2) + (C >> 3) - (C >> 4) + 32;

F = (C << 1) - (C >> 2) + ((C >> 2) >> 1)) - (((C >> 2) >> 1) >> 1) + 32;

If you know that C will always be positive and less than 128, then this works
 like a charm.
If it doesn't fit in these ranges than you can adjust it by adding a fudge
 factor to both sides.

HTH,

Alan G. Smith

+---------------------------------------------------------
| Alan G. Smith
| ags@poboxes.com
| http://www.innovatus.com/ags