Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!uunet!munnari.oz.au!sirius.ucs.adelaide.edu.au!levels!etrmg
From: etrmg@levels.sait.edu.au (What a Guy!)
Newsgroups: comp.os.cpm
Subject: Re: Kaypro II communications at high baud rates
Message-ID: <15766.2767c571@levels.sait.edu.au>
Date: 13 Dec 90 18:16:17 GMT
References: <7632@hub.ucsb.edu> <1990Dec5.125959.2947@techbook.com>
Organization: Sth Australian Inst of Technology
Lines: 28

In article <1990Dec5.125959.2947@techbook.com>, fzsitvay@techbook.com (Frank Zsitvay) writes:
> In article <7632@hub.ucsb.edu> crmeyer@nobbs.physics.ucsb.edu writes:
>  
>    i imagine this is due to the screen handling routines in ROM, as it
> apparently takes more time to handle a carriage return than it does to
> put a char on the screen.

On mine, it's due to having to scroll the screen contens up a line.  I've got
an 84 model or three,  and it keeps chars fine after a screen clear until
it hits line 25 and then begins to scroll and lose chars 3 to 6 of every
line.  Really annoying.  Got the uC Max Rom and it worked until I got a
Maestro 2400ZXR modem.  Now it's just as bad as before with 1200 baud!

I changed the 6845 too and it does make a difference, but not enough.  We're
gonna have to fix this one for good Guys!  Damn.

>  
>    the best solution would be to use a lower baud rate until you can either
> increase the processor speed or install a rom that handles the screen
> quicker.  at 2400 baud, i have no problems when i configure the host system
> to insert 3 nulls after every carriage return.  at 9600 baud you'd probably
> need 40 or 50 of them.

My prob is that not all BBS'es let you use Nulls anymore.  Why the newest
& "best" BBS software doesn't do this is beyond me!


Ronn