console over serial?

[decuser]

Over on the M100 mailing list, somebody suggested that there was "console over serial" with CP/M. Have y'all heard of such and do you know of where it might be documented?

Ideally, I'd like to fire up terminal on my linux machine and use screen or minicom or whatnot to connect to the CP/M instance and type my commands at the terminal rather than having to type on the m100.

Thanks,
Will

 

[durgadas311]

CP/M is basically indifferent about the details of the console, that being contained within the BIOS created by the vendor for the platform you're running on. I'm not familiar with the M100 platform, but if it has a serial port, *AND* the vendor implemented CP/M "I/O redirection" in their BIOS, then you can use STAT to re-assign the console to a serial port. You have to determine which of the devices is the serial port, but then you'd issue a command like "STAT CON:=TTY:" after which you should see the "A>" prompt on the serial port. Note that if you reassign the console to the wrong device, you won't be able to issue the command to return to the original console device (e.g. "STAT CON:=CRT:"), and will probably have to RESET and reboot. Read up on the STAT command, as it can show you the available device assignments, current assignments, etc.

 

[Chuck(G)]

Console over serial port was the way CP/M started out. In particular, over a TTY running at 110 baud.