[sdiy] MIDI opto-isolator

[Hallvard Tangeraas]

At 07:01 -0800  26.11.01, GothGeek Sysadmin wrote:


>On Mon, Nov 26, 2001 at 02:44:54AM +0100, Hallvard Tangeraas wrote:
>> I need some help in identifying an opto isolator used in the Atari STe
>> computer for the MIDI IN port.

>There are copies of the Atari schematics at :
>http://www.fortunecity.com/skyscraper/quadra/455/

Yes, I've downloaded the STe schematics from this site, but it was
rather fuzzy, and the writing was hard to make out.


>Sure enough the 1040STe uses the PC900.

Yup, sounds about right as the text in the schematic looked like PC-800
or PC-900. As Peter Ullrich also pointed out that it's a PC-900 and
someone else (with yet a different source) said the same thing it's
settled.


>Should be able to compare the schematic to the board to verify that indeed
>it is a PC900 from some other source...

Well, the one on the board wasn't a PC-900 as I've pointed out, but
must of course be a compatible, so that's good enough for me as I just
wanted to know the pinouts anyway (and I have the data for the PC-900
here).

Thanks everybody!


Hallvard
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