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Can you identify this PCB by supra...?


Sikor

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Hello!!!

I bought Atari with build-in supra PCB. Can anyone identify it for me...? (see pictures). I cant load nothing via SIO with my SIO2SD, but - I think - that it is any flooppy or HD interface.

O.K. On PCB is info: SUPRA CORP and number: 30-0021-1. Nothing else.

On PCB is soldered NEC D8048C 901 (X1Z176-150) CHIP and one eprom.

Anyone know what it is...? Maybe some schematics exist on the net?

Best regards, Sikor.

 

post-3328-1234285021_thumb.jpg

post-3328-1234285034_thumb.jpg

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You can probably figure out the SIO lines by where they're soldered to the XE. On the left of the board is where the Centronics connector went, so you can just look up the pinouts for that (also, the 15-pin external connector may be wired like an 850 so that gives you another point of reference).

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