Subj : Re: what are you dialing in with?
To   : Zero_Cool
From : Spectre
Date : Sat Jun 15 2024 22:15:00

 Ze> Serial cable only has RX TX and GND wires, 2400 baud.

I did a little research too. And... I stand corrected, it uses a 6850 to
drive the port, but the 6850 has different modes of operation and the
Osborne port is locked to 2400 Max.

Ordinarily at 6850 ought to be able to manage 19.2k under pressure,
definitely 9600 and support the extra control lines.  It'd take some hardware
hacking to get faster speeds unlocked, probably not worth it, and then you'd
have also modified the box too.

In theory you could take RTS/CTS  straight from the 6850. I've got some old
cards that use this thing. Off hand I can't tell you which pins, but its
really on tie them high to change the clock signal divisor.

Spec


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