view lib/alib/is_punct.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
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* See if character in "B" is a punctuation character

* OTHER MODULES NEEDED: IS_ALNUM, IS_CNTRL

* ENTRY: B=character to test

* EXIT: CC zero=1 if punct., 0 if not


 nam Is Char Punctuation?
 ttl Assembler Library Module


 section .text


IS_PUNCT:
 lbsr IS_ALNUM
 BEQ no if its a.z,A.Z or 0.9 not punct
 lbsr IS_CNTRL
 BEQ no controls not punct.
 orcc #%00000100 set carry
 rts

no
 andcc #%11111011 clear zero
 rts


 endsect