view lib/alib/is_termin.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 valid string terminator.

* NOTE: This module is used by HEX_BIN, DEC_BIN, etc. It permits
*       SPACE, CR, COMMA and NULL to be used as a delimiter -- useful
*       for paramater and list processing....

* OTHER MODULES NEEDED: none

* ENTRY: B=character to test

* EXIT: CC zero=1 if space, 0 if not


 nam Is Char a Terminator?
 ttl Assembler Library Module


 section .text


IS_TERMIN:
 tstb null?
 beq exit
 cmpb #$20 space
 beq exit
 cmpb #$0d carriage return
 beq exit
 cmpb #', comma?

exit
 rts

 endsect