view lib/alib/memset.as @ 2861:bd286ab169c7 lwtools-port

Makefiles: Make make info prettier for dsks/ReadMe
author Tormod Volden <debian.tormod@gmail.com>
date Mon, 15 Jul 2013 23:58:09 +0200
parents 03f26e88b809
children
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* MEMSET: Set bytes in memory to specified value

* OTHER MODULES NEEDED: none

* ENTRY: X=start of memory
*        Y=number of bytes to set
*        B=character to set

* EXIT: all registers (except cc) preserved 

 nam Set memory
 ttl Assembler Library Module


 section .text

MEMSET:
 pshs x,y

loop
 stb ,x+
 leay -1,y dec count
 bne loop till zero

 puls x,y,pc

 endsect