[OT] SGI Indgio2 console
Tom Buskey
tom at buskey.name
Mon May 5 10:24:18 EDT 2003
Jason Stephenson wrote:
> Tom Buskey wrote:
>
>> Older macintoshes had the round connectors too. The pin out was
>> completely different. You might be able to cut one up & rewire it.
>
>
> It's RS-432. (I'm not 100% that I got the number exactly right.) It's
> "superior" to RS-232, depending on the source, but it is more or less
> compatible with the right cable. What he wants is a RS-432 to RS-232
> null modem (aka printer) cable. Where to find such a beast, I have no
> idea.
The mac's serial ports are RS-432 also. But the wiring is the same as
RS-232. The only thing that really uses the RS-432 features is
localtalk. Everything else just uses it as an RS-232 port.
I always used a mac din-25pin cable, then a standard null modem. An sgi
din-25pin cable should work just as well.
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