In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Peter Van der Zee wrote:

@Terry;

I have my code running correctly, but I can't use SX/B to do it.

The word subtraction you are using in your own divide routine yields the correct result, and is an elegant answer.

Also I'm now having trouble with the carry-out from some number sets when using the word add SX/B instruction, and the similar approach as suggested by Peter Verkaik referenced in the above post will also fix that:

            mov     w,__Param1              
            add     __Param3,w              
            mov     w,__Param2              
            snc                          
            mov     w,++__Param2            
            add     __Param4,w              'carry out is correct here
 
Is there a reason why the compiler could not be altered in the suggested manner to fix these?  Seems pretty simple?

@Peter;

As I get older, I seem to forget more things.... heavens this was just discussed (but not fixed) only April of this year, and already I can't remember it !!!

In your referenced addition example, what is the purpose of the movsz  w,++Value  verses just mov w,++Value ? I don't get the SZ part.

Cheers,

Peter (pjv)

---------- End of Message ----------


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=361053#m361099

Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com

The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2009 (http://www.dotNetBB.com)