[Coco] DCModem Pak to RS232 conversion posted
rtaylor at bayou.com
Fri Sep 24 13:15:16 EDT 2004
At 03:27 PM 9/23/2004, you wrote:
> > The design depends on a simple level converter pcb that was sold by
> > CocoPRO!
>Not quite... although CoCoPRO! offered it as a kit, you can see that it is
>nothing more than perfboard. The schematic is so simple that no PC board is
>really even needed.
>I am going to do this mod to my DC Modem, will report the results. If
>available to me (and I believe they are) and there is sufficient interest, I
>will offer a similar kit, and with options I mentioned in my earlier post.
>Also I will gladly perform this mod or other hardware services for CoCo-nuts.
>Let me check out the parts scene and figure out $$$.
I have a spare DC Modem Pak that I hacked to use a 4-pin telephone
jack. This was used to allow the LK-201 smart keyboard to be used from
OS-9 and DOS projects. I remember breaking the DC Modem Pak PC board apart
and then adding the 1488 and 1489 chips to their own little boards which
are just floating in the case with the needed wires attached. It was a
weekend throw-together that worked. I might see if a 4-pin panel-mount DIN
jack will mount to the case instead of the RJ-11 jack which will make a
really nice alternate serial port.
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