Converting Hexadecimal to ASCII - Whats the logic?

[purifier]

Can someone tell me the logic of converting a hexadecimal format to ASCII format in Assembly please?

 

[BeeBop]

Hi purifier,
Thought I might have something local, but couldn't find it. You didn't say which processor you are using, and that makes a difference with assembly. However, I do have some links which will probably help:
for PIC micro:**broken link removed**

About 10-15 years ago in a Bulgarian magazine 'Computer' there was a
contest on
shortest HEX to ASCII routine for several processors.
Here is the routine for '51, in fact only 6 bytes long not counting ret.
Please
comment.

hex1d:
add A#090h
da A
addc A,#040h
da A
ret

Found at:http://forums.semiconductors.com/forums/viewtopic.php?t=687&sid=0c53db7bab463131a36e03470fb8b937

And another for the 51 is halfway down this page on Myke Predco's site - #3:
http://www.myke.com/51-snip.htm

A discussion on the conversion which may be useful:
**broken link removed**

And a discussion on this board can be found here:



I hope this is of some help to you, but if you have questions, just ask.
Regards,
Robert

 

[purifier]

Wow...Thank you so much... I'm using the logic for an 8086 processor...Will get back to you if i have any doubts...thank you..

 

[IanP]

"Convert HEX to ASCII - ASM/8086"
**broken link removed**

Regards,
IanP