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Usage Notes

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VapourSoft edited this page Mar 6, 2023 · 30 revisions

Connections

Connection Types

  • No telnet ( ATNET0 / dial prefix: - )

    • Data is sent between the server and the PCW without any modification

  • Real telnet ( ATNET1 / dial prefix: = )

    • Telnet protocol commands are both sent and interpreted. A null byte is added to outgoing CRs and stripped from incoming CRs

  • Fake telnet ( ATNET2 / dial prefix: + )

    • Telnet protocol commands are both sent and interpreted.

If during a connection you see double echoing of your keystrokes or echoing when you don't expect it, it is likely that you are using Real or Fake telnet connection with a server that does not support the telnet protocol. In this case, try connecting with "No telnet"

View Data / Prestel

You will need terminal software which supports ViewData ( see here ) and must connect with the No telnet ( ATNET0 / dial prefix: - ) for these sites. Some examples ...

ATDT-nx.nxtel.org:23280

image

ATDT-glasstty.com:6502

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Tip: if a page requires you to press "ENTER" but nothing happens, try # instead.

Remote login to PCW

How to log into your PCW using telnet from any machine

Modem Setup
Ensure connection to WiFi then issue the following modem commands...

  • AT$SP=23 Listen for connections on port 23
  • ATS0=3 Auto answer after 3 'Rings' (any number higher than 0 will enable autoanswer)

PCW Setup
In CP/M on the PCW run DEVICE CON:=SIO - this allows the computer to be controlled from the serial port.

Connect
telnet pcwmodem.local or telnet PCW_IP_Address
You can find the PCW's IP Address using the ATI modem command

Disconnect
To redirect control back to the PCW hardware you would need to type from the remote terminal DEVICE CON:=CRT

Redirecting the printer

It is possible to redirect the printer to the serial port. So provided you can establish a prior connection with the appropriate software on the remote machine, you may be able to print wirelessly.

CP/M DEVICE LST:=SIO Redirects the printer to the serial port.

Locoscript You will need LocoScript 2 or later and will need to install an appropriate printer driver which supports serial connections.

File transfers

There are many ways to transfer files between your PCW and other machines using the modem. If you have a linux based machine, you could install kermit software on it and enable telnet. Using PCW comms software (which supports kermit), dial your linux machine's IP address (telnet default port is 23) and login. Now you can issue 'kermit send' and 'kermit receive' commands in the terminal, and then select the appropriate action in your comms software to carry out the transfer. Please note there are security implications of enabling and using a telnet server!

Internet time service

It is possible to set the PCW's data and time from the internet see here

  • Viewdata screens above captured using VDU terminal and Joyce Emulator connected to D1 mini running the current PCWWiFiModem firmware
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