view lib/alib/memset.as @ 3140:03b580a02945

Allow CoCo3FPGA-specific build of superdesc.asm Added new conditional CC3FPGA and code to "level1/modules/superdesc.asm" to reflect changes needed to build the new SD card descriptors for the Coco3FPGA.
author Bill Pierce <merlinious999@gmail.com>
date Sat, 04 Feb 2017 11:06:26 +0100
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