68kMLA Classic Interface
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| Click here to select a new forum. | | Unknown card in PDS slot | Posted by: trag on 2015-06-11 15:51:05
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....
| Posted by: Bunsen on 2015-06-25 05:09:12
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.
| Posted by: Trash80toHP_Mini on 2015-06-25 08:13:22
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. : 🙂
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