Ogo to pc/modem cables?

Franklin Eekhout (franklin@sn.no)
Wed, 19 Mar 1997 22:10:38 -0500

Hello all,

Thought I would have a go at making a serial cable. I have found the
pin outs described, but am not sure... Is there no need for any level
converting/clipping, standard +-12V?

(Scared of frying my ogo!)

Also, is the cable different for connecting to a pc versus a modem? I
just found references to nullmodem cable/adapters, no detailed diagrams.
(I felt much safer making cables for my now pensioned M100, cost me
just USD 15!)

So, for cable connection, ogo to DB-25:

ogo pc
2 rx 3 tx
3 tx 2 rx
5 gnd 7 gnd
7 rts ? What goes here?
8 cts ? What goes here?

For modem connection, ogo to DB-25:

ogo pc
2 rx 2 rx
3 tx 3 tx
5 gnd 7 gnd
7 rts rts
8 cts cts

Is there only hardware handshaking?

Can anybody give such a correct, detailed spec and put it in the faq?

This was a lot, but it would be nice to get it connected... :-)

Have a nice day,

Franklin