[sdiy] MIDI opto-isolator

[GothGeek Sysadmin]

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. I can't seem to find it in any
> electronics catalogue of mine and need specs, pinouts etc.
> 
> It's got 6 pins and is marked as follows:
> 
>    I   I   I
>   -----------
>  |   HIL3    |
>   >  048J    |
>  |           |
>   -----------
>    I   I   I

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

Sure enough the 1040STe uses the PC900.
Should be able to compare the schematic to the board to verify that indeed
it is a PC900 from some other source...

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