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 Post subject: needing ID
PostPosted: Wed Mar 27, 2019 2:21 am 

Joined: Thu Feb 21, 2019 7:36 pm
Posts: 44
the 2st has lots of gold pins on back


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 Post subject: Re: needing ID
PostPosted: Wed Mar 27, 2019 10:19 am 
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Joined: Tue Feb 03, 2015 6:57 pm
Posts: 9752
Location: Low DOS
First one is telco, leave the ICs in.
That’s an old serial expansion with serial modem. If it works there’s a better market for it used. Especially since you have two expansions installed, that Could fetch upwards of $20+. With expansion controllers you can do more actions per cycle in parallel. Like downloading from the modem directly to a tape drive attached to the board, bypassing memory. These were also occasional used as controller boards attached to external tape drives for direct access protocol (DaP) tape drives. I only point this out because I myself still use tape for media playback. Tape drives are expensive to buy and expensive to maintain. But the cartridge price per meg is way lower than most hard drives. TFS and derivative file systems can be read on any computer from 70s mainframes to the newest iMac Pro with nothing more than a port adapter and a few configuration entry’s for built in support on every existing operating system.So it’s always worth looking into selling such items. Even condition unknown sales can bring $5-$10.



I believe the second and third are the same. If so you have pin board. If not I’d need back side pictures for both to classify it.
Last picture... probably peripheral, unless the back is covered in ICs.

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 Post subject: Re: needing ID
PostPosted: Wed Mar 27, 2019 6:17 pm 

Joined: Thu Feb 21, 2019 7:36 pm
Posts: 44
thanks for the info i will look into that first board i dont even remember where i got it. 2and 3 and 4th are all the same board pins are on back side ics and pins on front. what is price on pin boards?


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 Post subject: Re: needing ID
PostPosted: Wed Mar 27, 2019 7:45 pm 
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Well it’s pushing the limits I’d go backplane here.

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