Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!cica!iuvax!pur-ee!sage.cc.purdue.edu!aj0
From: aj0@sage.cc.purdue.edu (Eric Mulholland)
Newsgroups: comp.sys.apple
Subject: Re: 4k-Xmodem
Message-ID: <3713@sage.cc.purdue.edu>
Date: 27 Feb 90 15:25:59 GMT
References: <300.infoapple.net@pro-generic> <2311@ultb.isc.rit.edu> <9159@wpi.wpi.edu>
Reply-To: aj0@sage.cc.purdue.edu (Eric Mulholland)
Organization: Purdue University
Lines: 35

>lmb7421@ultb.isc.rit.edu (Les Barstow: Phoenix) writes:
>>Umm, last I checked, there was no such thing as 4K-XMODEM....
>>1K XMODEM, yes, but 4K?  That's not in the specs.  If you're talking
>>about ZMODEM, that's different, but I don't know of any program for an
>>Apple ][ which does ZMODEM yet...

greyelf@wpi.wpi.edu (Michael J Pender) writes:
>You mean besides Proterm 2.1, right?  Because Zmodem works
>just ducky under proterm 2.1 for me.

    4K xmodem does exist, Don Elton has it in his Talk is Cheap program.
At least hat's what I keep hearing.  I have some limited specs on the
protocol, I think it give me all the info but I'm not positive.  I could
always use a more complete description so I can implement it.
    I'll say the zmodem in Proterm is just ducky, a real quack!  I have
not been able to get it to work with sz/rz on unix nor with a local ms-dos
bbs.  This is with Proterm 2.1, selecting zmodem and batch.  I believe
someone else on the net (don't remember who) said that Proterm's zmodem
only implements a small subset of the protocol.  When I monitered the
serial flow once, proterm wasn't using the ascii format for the headers.
From the zmodem specs I have, zmodem is supposed to use them until both
ends know the other supports the binary format.

    On the topic of communications, what is the perfered method for cdas
wantting to use the serial port and keyboard?  I'd like to release a cda
version of my communication program, but don't know how to communicate
with the serial port or keyboard.  The current version is in Prodos 8
because I'm not rich enough to afford all the gs reference books.  Now
only if those books could come out in paperback.

-- 
     ____
 Y_,_|[]|   Eric Mulholland
{|_|_|__|   aj0@sage.cc.purdue.edu
//oo--OO    ...!pur-ee!sage.cc!aj0