view lib/alib/to_non_sp.as @ 3054:22ddd48b4ec2

level1 krn: Fix scheduler bug that only affected 6309 The original 6809 binary was correct, but it was disassembled and interpreted wrongly, so that reassembly went wrong on 6309.
author Tormod Volden <debian.tormod@gmail.com>
date Sun, 25 Jan 2015 22:36:02 +0100
parents 03f26e88b809
children
line wrap: on
line source

**********************************

* Advance X to 1st non-space character

* OTHER MODULES NEEDED: none

* ENTRY: X=somewhere in a string

* EXIT: X=1st non-space character in string
*       B=char at X


 nam Advance to non-space
 ttl Assembler Library Module

 section .text

TO_NON_SP:
 ldb ,x+
 cmpb #$20 is it space?
 beq TO_NON_SP yes, loop
 leax -1,x point to non-space
 rts

 endsect