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000103_news@newsmaster….columbia.edu _Thu May 21 13:55:05 1998.msg
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From: Andy Fox <foxes@theriver.com>
Newsgroups: comp.protocols.kermit.misc
Subject: One-Way Transfer
Date: Thu, 21 May 1998 10:37:41 -0700
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Hi,
I purchased an HP-48GX calculator recently, and was delighted that the
default file transfer protocol is Kermit. The calculator has a simple
serial interface (TX, RX, GND and Shield), so it supports only XON/XOFF
flow control. I have verified that the cable is good.
I have been able to transfer data from the calculator to my PC, which is
running K95 1.1.16. I cannot transfer data in the other direction,
though. This is consistent whether the PC is acting as the server and I
get the file, and when I send the file and recieve at the calculator.
The PC resends, again and again until I cancel the transfer.
The PC is set up with the following SET commands:
modem type none
port com1
speed 9600
parity none
carrier off
terminal bytesize 8
flow-control none
file type text
terminal character-set ascii
The calculator's "IOPAR" (I/O Parameters) are
9600 "baud"
0 parity 0=none
0 receive pacing 0=none, 1=XON/XOFF
0 send pacing 0=none, 1=XON/XOFF
3 checksum, I think this is same as block-check
1 translate (adds <lf> to PC, strips <lf> from PC)
I would really appreciate any help with this. Thanks in advance!
--
72/73 de Andy, KK7HV - QRP-L #1286 - Benson, AZ