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From: valentin@public.BTR.COM (Valentin Pepelea)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: "Fast" Mode with parallel.device under OS 2.0 ??
Message-ID: <2337@public.BTR.COM>
Date: 10 Apr 91 06:20:19 GMT
References: <1991Apr9.115525.2939@forwiss.uni-passau.de>
Organization: BTR Communications, Mtn. View, CA
Lines: 40

In article <1991Apr9.115525.2939@forwiss.uni-passau.de>
hessmann@r2d2.fmi.uni-passau.de (Georg Hessmann) writes:
>
>For nearly one year, Valentin Pepelea writes:
>
>|The 1.3 parallel device used to transfer about 6500 characters per second.
>|In "serial baud" terms, that's 65000 baud. Not bad. I've rewritten the
>|parallel device for 2.0, and on a '030 Amiga you can now send out well over

The updated parallel device, version 36.xx, will now work under 1.3 also.
But make sure you also use the printer device version 35.573 or superior.
The new parallel device will make some awfull printer device bugs painfully
evident. 

>|100000 characters per second in its "fast" mode. Unfortunately this fast mode
>|depends on the printer to assert the BUSY signal fast enough. Since there is
>|a slight chance that an unusual printer out there does not assert the BUSY
>|signal before the Amiga is ready to send the next character, the "slow" mode
>|of the parallel device is set as default.
>
>Fine, I *need* this "fast-mode".
>
>How can I select this mode??

Simply write OpenDevice("parallel.device",0L,par_request,PARF_FASTMODE);
Compile, link, attach seat belt and run. Incredible magic, eh?

You now owe the Oracle an air bag.

>(via parallel.device or printer.device)

And make sure you use the updated printer.device, dammit. Both new device
drivers are on Workbench V1.3.3.

Valentin
-- 
"An operating system without virtual memory      Name:      Valentin Pepelea
 is an operating system without virtue."         Phone:     (408) 985-1700
                                                 Usenet:    mips!btr!valentin
                     - Ancient Inca Proverb      Internet:  valentin@btr.com