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1980's goodness

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grumpydoc:
Bought,..... well a box of junk really off ebay a while ago for a quid (figured I wouldn't need to find much usable to be up on the deal :) ). In amongst were about 10* (some unused) CPU cards for an industrial flow controller. Loads of TTL, 6502's + peripherals, static RAMs, EPROMS and other good stuff from the 1980s. Not sure what I'm going to do with it yet but it's all useful for repairs of older equipment.

* Edit: 12, in fact, now I've counted properly.

Thought I'd share a picture of the board which is simply enormous 15x10.5", before I do though - I've identified just about all the ICs except the PLCC device at the top of the board. It's a Motorola device - the markings are:
ZC98376CFN
     MED92
B95TQQQY8925

The last line is obviously the date code (week 25 1989, presumably) and I guess that the ZC98376CFN is the part No but Googling that yields no useful hits. One of the other boards has a 68HC11 in that position so I'm assuming that's what it actually is - anybody any idea?

Anyway here it is!

IanB:

--- Quote from: grumpydoc on June 14, 2012, 09:46:02 pm ---a picture of the board which is simply enormous
--- End quote ---

You can say that again! I can barely see a quarter of the picture in the post window  :)

grumpydoc:
It would be nice if the forum made image display a bit easier.

Normally I'd have reduced the image dimensions more but wanted to convey the sheer size of it - at 263x385mm it has almost the same area as a full sized AT motherboard.

It has three 8-bit CPUs, the mystery ?68HC11 and two more 6502's together with boatloads of digital and analogue I/O

I suspect you could replace the whole thing with an AVR these days :)

amyk:
I've found some Motorola/Freescale documentation that states:
'An "SC" or "ZC" prefix denotes special/custom device.'

Might be mask ROM or have some other interesting peripherals built in.

The 68HC11 you found makes this likely to use the same core too.

(It's probably not related to the MC68376, which is a 32-bit device from the 90s.)

codeboy2k:
Video Arcade game mainboard?  multiple CPU's lots of EEPROMS , digital and analog I/O... could be?

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