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Initial changes to use lwasm instead of mamou Initial high level changes to use lwasm instead of mamou.
author William Astle <lost@l-w.ca>
date Sun, 10 Jun 2012 12:40:11 -0600
parents 7d70b7e1cb21
children aaba193af04f
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*******************************

* convert a null terminated string to all lowercase

* OTHER MODULES NEEDED: TO_LOWER

* ENTRY: X=start of string

* EXIT:  all registers  preserved

 nam Convert String to Lowercase
 ttl Assembler Library Module

 psect TO_LOWRS,0,0,0,0,0

TO_LOWRS:
 pshs cc,b,x

loop
 ldb ,x get char to check
 beq exit exit if all done
 bsr TO_LOWER convert to upper 
 stb ,x+ put back in string
 bra loop loop till done

exit
 puls cc,b,x,pc

 endsect