Unknown card in PDS slot

[trag]

You can change what it identifies as, but don't you have to swap a crystal too? (IE, I know if you fiddle with the ID bits you can make the board identify as anything from a Centris 650 to a Quadra 800, but the speed is still dictated by the oscillator.)

Well, as I've mentioned before, my memory is old and crumbly.   Does the 25 => 33 upgrade require an oscillator swap?   Some of them just needed a resistor change on a clock generator, but the Centris/Quadra may still have been oscillator controlled.  

Okay, I went and looked at the mirror/preserve of Marc Schrier's Clock Chipping Home Page hosted at applefool, and it was indeed an oscillator swap.   Thank you.

So, an oscillator swap and a couple of resistors....

 

[Bunsen]

I would suggest hitting archive.org, going to Formac's homepage for around the dates when the 650 was a current or just-deleted product, and seeing if you can find any documentation there.  With luck you might even find a driver.

 

[Trash80toHP_Mini]

ISTR, OP's already been there, done that, come up dry and then emailed Formac w/no response, not positive on the archive though.

Riddle answers = TattleTech NuBus/PDS Report/Guage Pro's SlotInfo Results. Waaaay past time for posting those.  :