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Old 22nd Jul 2019, 1:35 am   #182
JohnBHanson
Heptode
 
Join Date: Aug 2009
Location: Worthing, Sussex, UK.
Posts: 661
Default Re: Gemini 80-Bus System

What is the trace when you type dir n: - that might provide some clues. In the trace the lines have either > or < for tx/rx.

1. WhIe the server is runing type stty -F /dev/ttyS0 -a and check the port is set for 8 bits no parity (it should be). Also check the baud rate

2. Double check your serial lead

3. Make sure you are not using the serial port for CP/M - eg CP/M itself is not outputting to the serial port.

The log should show something like
Code:
Trace tty < 00: 00
Trace tty > 00: 01
Trace tty < 00: 02
Trace tty > 00: 25 11 a2 01 00 01 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f
Trace tty > 10: 3f 00 00 00 00 00 20 20 20 20 20 20 20 20 20 20
Trace tty > 20: 20 00 00 00 00 00
Trace tty < 00: a4 00 00 a2 01 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f
Trace tty < 10: 00 00 00 00 00 20 20 20 20 20 20 20 20 20 20 20
Trace tty < 20: 00 00 00 00 00 00 43 48 55 47 20 20 20 20 4c 53
Trace tty < 30: 54 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Trace tty < 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Trace tty < 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Trace tty < 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Trace tty < 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Trace tty < 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Trace tty < 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Trace tty < a0: 00 00 00 00 00
Note this is with the simulator - so < and > maybe reversed on your trace. I have attached a working disk image with t-net. This works with the xbeaver emulator which should give you a basis for comparison. The same disk image should work with your real hardware

use the command "t-net n" to start t-net.

your server configuration file looks ok. If you still have problems please post the entire console log when trying dir n: and I can see what causes the error. Usually it is a failure of the initial handshake

Code:
Trace tty < 00: 00
Trace tty > 00: 01
Trace tty < 00: 02
Attached Files
File Type: zip tnet_emulator.zip (189.1 KB, 81 views)

Last edited by JohnBHanson; 22nd Jul 2019 at 1:53 am.
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