Path: utzoo!utgpu!water!watmath!clyde!cbosgd!ihnp4!ptsfa!ames!sdcsvax!ucsdhub!esosun!seismo!uunet!nuchat!sugar!peter
From: peter@sugar.UUCP (Peter da Silva)
Newsgroups: comp.sys.amiga
Subject: Re: Amiga serial questions
Summary: Of course it can scroll at that speed!
Message-ID: <1253@sugar.UUCP>
Date: 14 Dec 87 10:57:22 GMT
References: <8712050831.AA11465@cory.Berkeley.EDU> <5568@oberon.USC.EDU>
Organization: Sugar Land UNIX - Houston, TX
Lines: 28

In article <5568@oberon.USC.EDU>, papa@pollux.usc.edu (Marco Papa) writes:
> >> will explain "sustained".  8 hours of continuous 19.2K transmission with no
> >> ...
> >> Scrolling is mandatory...
> 
> Matt responds:
> >	Don't be silly.  Even Tek terminals have flow-control, and assuming
> >all 55 Meg will get through without an error is ridiculous.

True.

> >The Amiga can
> >read data at that speed, but not scroll at that speed.

Sure it can. It'd take some smarts, but it can.

DTerm already does multicharacter reads from the serial.device. Now all you
need to do is multiline scrolling. You don't scroll every line, instead if you
feel yourself getting behind you jump-scroll 3 or 4 lines at a time. It doesn't
take any more time to scroll 4 lines than to scroll one (a blit is a blit,
the world around), so if you can scroll at 9600 normally you can jump-scroll
at 19.2 by skipping every other scroll when the heat's on.

The rest of the problems (like doing area fills at 19.2) are probably real,
but this is a paper tiger.
-- 
-- Peter da Silva  `-_-'  ...!hoptoad!academ!uhnix1!sugar!peter
-- Disclaimer: These U aren't mere opinions... these are *values*.