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From: janl@ifi.uio.no (Jan Nicolai Langfeldt)
Newsgroups: comp.sys.handhelds
Subject: Re: Packet length
Message-ID: <1991Jun7.110918.4250@ifi.uio.no>
Date: 7 Jun 91 11:09:18 GMT
References: <32444@rouge.usl.edu>
Sender: janl@ifi.uio.no (Nicolai Langfeldt)
Reply-To: janl@ifi.uio.no
Organization: "Crazed Python Quoters unlimited"
Lines: 33
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Originator: janl@sanngjet.ifi.uio.no


In article <32444@rouge.usl.edu>, das9674@rouge.usl.edu (Stephenson Daniel A) writes:
> Hi!
> When I download programs from UNIX tomy PC, packet lengths are about 1000 or so, but when I download then from my PC to my HP48SX, they are 94. Why?
> 
> Thanks,

As I recall: When a kermit file transfer starts, the kermits has a little
chat:

1: I can do packets of lenght x
2: And I can do packets of length y
1: (thinks to itself) We'll use min(x,y) then
2: -------------------"----------------------

This is because some machines/kermit implementations have a limit on how
many bytes they can recieve in rapid succession (or in one packet). This
also applies to hp48 kermit; The hp48 has a input buffer of 255 bytes on
incomming traffic. A packet length of 94 will allow ~2 packets in the
buffer at once, which is A-Good-Thing.

(please refer to the 'hp 48 i/o technical interfacing guide' for more
info on hp48 comm. (I have it in postscript format))

I _have_ looked for a packet langth command but with no luck! Maybe a
syseval??


Nicolai, your friendly alaround amateur (bugs made while you wait!).

Nicolai Langfeldt, Internet: janl@ifi.uio.no   
Quote: Life is too important to be taken seriously - Oscar Wilde 
   (translated and retranslated)