Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!spool.mu.edu!olivea!uunet!nowhere!caf
From: caf@omen.COM (Chuck Forsberg WA7KGX)
Newsgroups: comp.dcom.modems
Subject: Re: Over 1000 cps with PEP?
Message-ID: <1991Jun23.010337.2949@omen.COM>
Date: 23 Jun 91 01:03:37 GMT
Article-I.D.: omen.1991Jun23.010337.2949
References: <244.2861EA83@zswamp.uucp>
Organization: Omen Technology INC
Lines: 14

In article <244.2861EA83@zswamp.uucp> root@zswamp.uucp (Geoffrey Welsh) writes:
-3) XMODEM is a slow protocol, period... and few programmers bother to code it 
-very efficiently as a result.  In fact, even at 115,200 bps over a null modem, 
-I have not been able to reach 1000 CPS with XMODEM!

Depends on the computers and the software.  A pair of DOS machines running
ZCOMM or Pro-YAM get up to 4000 CPS using xmodem-crc.  (1359 sending to an
XT equivalent).  Using 1k blocks raises the 4000 to over 9000 CPS.

-- 
Chuck Forsberg WA7KGX          ...!tektronix!reed!omen!caf 
Author of YMODEM, ZMODEM, Professional-YAM, ZCOMM, and DSZ
  Omen Technology Inc    "The High Reliability Software"
17505-V NW Sauvie IS RD   Portland OR 97231   503-621-3406