http://www.applefritter.com/node/view/2302 : I am new to this site and tried to reply to this post, but it was too old. I do indeed have the pinouts to the mezzanine connector (or at least the better part of half of them. The story is that this connector was electrically identical to the personality slot on some earlier Macs. The difference is that the pin count was off bya bout 16 or so pins. I was able to get my hand on a IProRaid TV card (by Formac) and get the specs for some of the chips on the board. By using a continutiy tester, I was able to reverse engineer the connector to the chips. The problem is that the chips only utilized the lower 32 bits of the PCI format. The connector will support a full 64 bit PCI connection if you can figure out the remaining pins. I never had much luck beyond this point. What I do have is a decent (albeit hardcopy) documentation of the pinouts with enough detail that one should be able to construct a 32 bit PCI card for this slot. I have the part numbers needed for the connector as well. The caveat is that some of the crucial pins for the Device select and interupt are questionable (but marked as such). It is a decent start for the brave. I will try to dig this info up from my archives and package it.
http://developer.apple.com/documentation/Hardware/Developer_Notes/Macintosh_ CPUs-G3/PowerMac_G3/pmacG3.6.html : PERCH slot : a 182-pin microchannel connector. The PERCH slot is a superset of the PCI specification, and does not accept standard PCI cards. The PERCH slot on the desktop and tower enclosures supports Apple Audio, Audio/Video, and DVD-Video and Audio/Video input/output cards. The All-in-one enclosure does not support the DVD-Video and Audio/Video Card. This note does not provide the electrical specification for the PERCH slot. Mezzanine to PC Card cage (I don't know if this works on the iMac): http://www.elandigitalsystems.com/adapter/pmc111.php There was also a Griffin Video out card, and a SCSI adaptor for the Mezzanine slot. (although, if memory serves me correctly, the video card card only used the external slot, and not the connector itself.) -- Mac UK is sponsored by <http://lowendmac.com/> and... 123Inkjets.com <http://lowendmac.com/ad/123inkjets.html> Support Low End Mac <http://lowendmac.com/lists/support.html> Mac UK list info: <http://lowendmac.com/lists/mac-uk.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/mac-uk%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
