I have an old AA4RE BBS system running on an old DOS 486 box w/ 8mb of
memory. It uses BPQ to talk to serial ports. I am not sure what
version, but think it's BPQ408.

It has 4 serial ports configured with BPQ, 3 of which are used to talk
to radio TNCs in KISS mode.

The 4th is configured for another KISS port, but it is not in fact
used. I'd like to reconfigure it so that I can hook up a simple 9600
baud terminal (such as a PC running Hyperterm) to access the BBS from
an adjacent building by hard wired serial connection at 9600 baud.

I'm not sure where to start on this - should I change the BPQ config,
or do I have to remove that serial port from BPQ altogether and
somehow configure the BBS to use that port? I am supposing that since
I want to access the BBS the same way the other ports do command
structure wise (I just want to remove the radios and TNCs), that I
just need to decommission KISS mode and configure the port as a simple
terminal. However the few docs that came with this version of BPQ
seem to only use HDLC, KISS and NETROM - all computer-to-computer
protocols.

Does anyone have a suggestion?
thanks
Al