Date   : Sat, 30 Nov 1985 12:22:43 GMT
From   : Chuck Forsberg WA7KGX <caf%omen.uucp@BRL.ARPA>
Subject: Unix / DOS+CP/M File Transfer programs Posted

The current versions of sb and rb, *nix programs supporting XMODEM,
YMODEM, and YMODEM Batch file transfers, have been posted to
net.sources.  Recent changes include support for BSD 4.2 and SYS V
terminal control conventions.  Compared to the last version of UMODEM
examined, rb and sb load the CPU less because of multi-character
terminal i/o operations.

In additon, YMODEM 1k packets (supported by YAM, MEX, PibTerm, IMP,
etc.) give greater throughput than XMODEM.  For example, at 9600 bps,
an otherwise idle PC-AT Xenix downloads to Pro-YAM with YMODEM-g twice
as fast as it does to Crosstalk XVI 3.6 with XMODEM.  This disparity
increases with transmission speed and system response time.

YMODEM batch transfers can also preserve the exact file length and
modification time.

VMS versions of these programs are also available, and will be posted
when a terminal mode problem unique to VMS version 4 is corrected.

Enjoy.
-- 
  Chuck Forsberg WA7KGX   ...!tektronix!reed!omen!caf   CIS:70715,131
Omen Technology Inc     17505-V NW Sauvie Island Road Portland OR 97231
Home of Professional-YAM, the most powerful COMM program for the IBM PC
Voice: 503-621-3406     Modem: 503-621-3746 (Hit CR's for speed detect)
omen Any ACU 1200 1-503-621-3746 se:--se: link ord: Giznoid in:--in: uucp