Anybody recognize this VLB controller?

Discussion about old PC hardware.

Anybody recognize this VLB controller?

Postby SirNickity » 2018-12-06 @ 21:29

I got this with a 486 motherboard. Works, but I have no documentation on it, and the jumpers aren't labelled at all aside from the "Jx" designations. I have found no trace on Google by name, and no luck on Stason by name or likeness.

questvl.jpg


Any leads?
SirNickity
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Re: Anybody recognize this VLB controller?

Postby torindkflt » 2018-12-06 @ 22:19

I don't recognize it off-hand. Is there an FCC ID printed anywhere on the board? If so, it may be possible to find information by searching for that.

EDIT: I searched Google for "Appian ADI2", which is what's printed on the large IC next to the "Made in USA" stamp, and came up with this page: http://www.ryston.cz/petr/vlb/adi2.html

It unfortunately does not have any jumper information on it, but it seems to give an alternate model number of "Adaptec AIC-25VL01" that may possibly provide leads. Otherwise, like I said above, searching for the FCC ID might also give some other useful results.
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Re: Anybody recognize this VLB controller?

Postby SirNickity » 2018-12-07 @ 19:45

Good idea on the FCC ID. I'll have to remove it and check on the back.

I'm still looking for a datasheet for the chipset, where I might be able to track the jumpers to pins on the IC -- and hopefully they're single-purpose pins, and not GPIOs with some custom sauce firmware. That Prima sticker will have to go, too. It seems all the Appian chip does is IDE, and all the rest of the I/O is under control of the other chip. With any luck, it's one of the garden-variety ISA controller chips and will be well-documented.
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