Path: utzoo!attcan!uunet!portal!atari!apratt
From: apratt@atari.UUCP (Allan Pratt)
Newsgroups: comp.sys.atari.st
Subject: Re: MIDI Networking
Message-ID: <1191@atari.UUCP>
Date: 18 Oct 88 17:22:35 GMT
References: <YXC6Ity00XoBI940VJ@andrew.cmu.edu> <3602@druhi.ATT.COM> <6424@batcomputer.tn.cornell.edu> <594@hudson.acc.virginia.edu> <3277@pt.cs.cmu.edu> <5080@saturn.ucsc.edu> <101488084314@js.UUCP> <404@bdt.UUCP>
Reply-To: apratt@atari.UUCP (Allan Pratt)
Organization: Atari (US) Corporation, Sunnyvale, California
Lines: 21

In article <404@bdt.UUCP> david@bdt.UUCP (David Beckemeyer) writes:
> In real life, [...] an effective data rate of only
> about 10 Kbps.
> 
> using the syncronous mode of the ST serial port we have achieved rates
> comparable to a floppy disk.  Another place to look is the bi-directional
> parrallel (printer) port on the ST.

I changed Bammi@mandrill's Zmodem so it used Midi (Bios device 3 rather
than 1: easy change) and got nearly 20 K/s, and when I took out the BIOS
trap overhead in the main packet-transfer routines (using PERFECTLY
LEGAL, PUBLISHED INFORMATION), I am getting 22-23 K/s.  Of course, I am
not moving the mouse while the transfer is going on...  If I did, the
throughput would indeed fall down. 

The other two places (synch mode and parallel) are indeed interesting
places!  I hope this starts a flurry of activity in this area.

============================================
Opinions expressed above do not necessarily	-- Allan Pratt, Atari Corp.
reflect those of Atari Corp. or anyone else.	  ...ames!atari!apratt