On Tue, 28 Apr 2020 11:47:23 +1000, Wayne Bickerdike wrote: >Doesn't seem right to me. If we're takling ANSI carriage control. > I think they're talking MVT COBOL syntax.
>0 - move double >blank - move single >+ - no LF >1 - Skip to next page (Channel 1) > >We always used machine code characters because they didn't have to be >immediate whereas ANSI were immediate. The reasoning was that it was faster >to perform the print action and then do the carriage move to the next line >or channel. In the days of the 1403 line printer. > Is that a guess, or did someone actually perform measurements? I would hope that a well-designed printer driver would optimize channel programs as it converted from ANSI to CCWs. The controller always performs spacing after printing. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
