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Mac '030 PDS Accelerators for NeXT?
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Rob Blessin Black Hole
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Joined: 05 Sep 2006
Posts: 597
Location: Ft. Collins, Colorado

PostPosted: Fri Feb 27, 2015 4:17 pm    Post subject: Reply with quote

M Paquette wrote:
Rob Blessin Black Hole wrote:
I wonder if NeXT ever had a PPC box going .... Best regards Rob Blessin


One of the NeXT hardware engineers, Ali A., had designed a daughtercard for the NeXT RISC Workstation that plugged in to replace the 88110 with a PPC 601. This was pretty easy, as the 60X bus architecture was lifted from the 88110. If I recall correctly, the prototype was running at 50 MHz.

It wasn't quite fully operational when hardware engineering was shut down.


http://www.ebay.com/itm/NEW-IN-BOX-NewerTech-PowerClip-for-Apple-Computer-Centris-Quadra-Macintosh-Mac-/281551620549?pt=LH_DefaultDomain_0&hash=item418dc8c9c5 , I bought one I'm wondering if the NeXT Occilator chip is compatible , in theory increase the bus speed may be a higher speed 040 chip would work .... I have a lot of boards and obviously don't want to damage them but tinkering is fun LOL , I know the Pyro Accelerator works to double the clock speed 25 to 50 Mhz but it would be cool to try either boosting the ocillator or replacing it with a higher speed one , don't know if a 68060Mhz chip was ever in the mix at NeXT or if they jumped straight to PPC . As far as I know the 68040 40Mhz Nitro was the fastest chip and it had a daughter card but the true spec is only known to a few. Any thoughts? If I'm nuts thinking this may work please tell me ...
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