Anyone know what this is?

classic non-acorn hardware, software & languages
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dominicbeesley
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Anyone know what this is?

Post by dominicbeesley »

I just found this in a box of assorted stuff I got given.

It's marked 'Research Machines PN11570' and has a z80 cpu and mb8877a fdc. Unfortunately there's two chips that have already been harvested one 40 pin and another 28pin (rom?)

Is it worth resurrecting?

D
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hoglet
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Re: Anyone know what this is?

Post by hoglet »

It's a single density disk controller board I believe (for the RM 380Z?)

This was the only reference I managed to discover:
https://groups.io/g/research-machines/t ... z/72790939

Dave
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jonb
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Re: Anyone know what this is?

Post by jonb »

Yikes. Rare, valuable. Don't scrap it...
dominicbeesley
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Re: Anyone know what this is?

Post by dominicbeesley »

Thanks both.

Any ideas who might be able to make use of it. No idea if it will work... it smells like it may have been fed beer at some point :roll:

It was in a junk box but I haven't spotted any other rm bits but there are a lot of brackets and what look like larger versions of the rails for eurocards
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DutchAcorn
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Re: Anyone know what this is?

Post by DutchAcorn »

Doing a bit of a google I found a 480Z Service Manual, the circuit diagrams on pages 96 and 97 seem to match with this board.
Paul
dominicbeesley
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Re: Anyone know what this is?

Post by dominicbeesley »

Thanks I'll see if that matches the board but it looks like itshould

So looks like I'm missing the SIO and rom
dominicbeesley
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Re: Anyone know what this is?

Post by dominicbeesley »

Yes, pages 96 and 97 certainly look to match what I have.

Now, who should I give it to - I'm unlikely to find a use for it so free to a good home

D
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