#Telebit Modems & Amiga?
29-Nov-90 15:43:07
Sb: #7262-#Telebit Modems & Amiga?
Fm: Andrew J. Richardson 76667,3312
To: Hal Kuff 76154,53
Hal,
i'e just completed a setup using a telebit trailblazer plus to connect to
uunet for a uucp connection. it took some trial and error on my part, plus
several re-reads of the manual. the amiga 2000 (mine at least) works fine
at up to 19.2 kbps through the stock serial port. tell gil to go to the
serial prefs section, and select rts/cts for the handshaking mode. this
uses the hardware connection through the serial cable to start/stop data
flow. xon/xoff just isn't reliable enough at high speed, at least that's
been my experience. the registers involved are 58=2 and 68=255. also set
a good sized buffer, say 8000 bytes. as far as the zmodem and x/y modem, i
believe that the software must be written to accomidate the "spoofing" mode
you are using. if you set register 111=20, you're telling the modem to
send x/ymodem acknowledgement messages back to the host automatically…and
just raw data to the term software you're using. if the term software is
expecting full x/ymodem blocks, and trying to calculate crc's to ack
there's bound to be a problem, since the telebit will strip the x/ymodem
info. try setting register 111=0 (no protocol), and run the transfers
under software (normal) control. then experiment from there when you get
it running. the most problems i encountered were with registers 50 and 51.
i wound up setting 50=0 (autobaud), so that it changes to whatever speed
the answering modem is at. since most modems answer at the highest speed,
then cycle down to slowest, this works well. register 51=5, which is the
highest speed my machine and term software can handle (as well as the
modem).
—Andrew