Paralel
Well-known member
I was looking through the Powerbook 500 series developer note:
http://tech-insider.org/mac/research/acrobat/9405-a.pdf
And thought it was interesting that the PDS slot was originally designed to allow for processor upgrades. Considering the Rev C. card cage actually contains a 68000 processor to translate PC card commands into commands that make sense for the '030 bus used in the 500 series, I can see how this would be possible. There really isn't much of a difference between the processor daughterboard connection and the PDS slot, they are both just meant as interfaces to the main '030 bus.
What do you guys think, is it possible to upgrade the processor through the PDS slot (even though it mentions that this function isn't enabled) on the 500 series? Or is it possible to make further use of the PDS slot than how it was used [implement a CardBus slot rather than just simple PCMCIA, etc...] Anything that can run on a '030 bus should be possible to implement, right? I have read that Sonnet successfully used it to add a 68882 FPU upgrade to the PB 500 series (although I will admit, I have never even seen a picture of one, so, while it is mentioned in more than one place, it's hard to say if this particular upgrade ever actually existed)
http://tech-insider.org/mac/research/acrobat/9405-a.pdf
And thought it was interesting that the PDS slot was originally designed to allow for processor upgrades. Considering the Rev C. card cage actually contains a 68000 processor to translate PC card commands into commands that make sense for the '030 bus used in the 500 series, I can see how this would be possible. There really isn't much of a difference between the processor daughterboard connection and the PDS slot, they are both just meant as interfaces to the main '030 bus.
What do you guys think, is it possible to upgrade the processor through the PDS slot (even though it mentions that this function isn't enabled) on the 500 series? Or is it possible to make further use of the PDS slot than how it was used [implement a CardBus slot rather than just simple PCMCIA, etc...] Anything that can run on a '030 bus should be possible to implement, right? I have read that Sonnet successfully used it to add a 68882 FPU upgrade to the PB 500 series (although I will admit, I have never even seen a picture of one, so, while it is mentioned in more than one place, it's hard to say if this particular upgrade ever actually existed)
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