view lib/alib/memset.as @ 3220:9ccec98c9897

Updated IDE Driver makefile so it will have place holders for dsk, dskclean, and dskcopy so that make does not error out when chaining into the driver tree to build disk images where applicable.
author David Ladd <drencor-xeen@users.sourceforge.net>
date Wed, 20 Dec 2017 16:10:50 -0600
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