[Coco] Xmodem, Ymodem

[Gene Heskett]

On Saturday 22 March 2008, Bob Devries wrote:
>I've used ZModem between my PC and my Amiga, but I must say it's very
>unreliable, and prone to time-outs, regardless of the transmission speed.

The amiga zmodem was I believe based on Tim Kientzles version, but was totally 
compatible with rzsz-3.36 on the coco.  So bulletproof in fact that I'd say 
you are miss-configured on one or the other serial ports, or have duff 
hardware.  I could move a 2+ megabyte file to the coco, then move it back to 
the amiga with no diffs cmp could find, and reverse, from the coco to the 
amiga and back and the crc was still good, and no stumbles in the transfer 
going either way.  I tested that _very_ thoroughly.

I have worked rzsz-3.3.6 against an old windows box once or twice too, on a 
real 14,400 modem.  A couple of bad crc restarts slowed it down as I was 
sending it about 50 miles at the time, but it worked.

>I'd say the SZ and RZ should work via the setup you mentioned (shell
>i=/t2&), and I have used that in the past, but I've only used XModem and
>YModem from within a terminal program like XCom9.
>
>--
>Regards, Bob Devries, Dalby, Queensland, Australia
>
>Isaiah 50:4 The sovereign Lord has given me
>the capacity to be his spokesman,
>so that I know how to help the weary.
>
>website: http://www.home.gil.com.au/~bdevasl
>my blog: http://bdevries.invigorated.org/
>
>----- Original Message -----
>From: "George Ramsower" <georgeramsower at gmail.com>
>To: <coco at lists5.maltedmedia.com>
>Sent: Saturday, March 22, 2008 3:46 PM
>Subject: [Coco] Xmodem, Ymodem
>
>> I'm curious why Ymodem won't work between this PC XP-Pro SP2 and my coco
>> OS9-L2
>>
>> Xmodem works, but places stuff at the end to fill in the last 100 bytes(I
>> assume)
>> I can't get Ymodem or Zmodem to work at all. So, what I do is just edit
>> out the extra crud that xmodem adds and the end and go from there.
>>
>> I don't use a terminal program on the coco. I simply do "shell i=/t2&"
>> from the coco in the startup file and use Hyperterminal on this PC to do
>> my work.
>> Well, actually right now, I'm using /T3 on the coco because I lost a
>> driver or reciever on the coco on the /t2 port. I need to fix that. This
>> happens about once a year.
>>
>> I run it at 9600 baud, 8n1, using using all the handshaking lines such as
>> RTS, CTS and RD
>>
>> The Xmodem and Ymodem routines I have came from the OS9-L2 BBS system I
>> bought about a thousand years ago.
>>
>> This has been a problem since day one. I read on this list that another
>> person(I can't remember who) said he couldn't get Ymodem (or maybe Zmodem)
>> to work either.
>>
>> Suggestions?
>>
>>
>> George
>>
>>
>> --
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>
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-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
"Being disintegrated makes me ve-ry an-gry!" <huff, huff>