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I had some PGA connectors in stock so I checked if they'd fit the 6360/5x00 and TAM risers I've been working on. Daniel over at the MLA suggested implementing a PCI device on the 6x00 Riser. Is there a better way than PGA to mount a PCI daughtercard on a riser in a DrawerMac?

Well that may have been ridiculous, but it made a good start for exploring Daniël's notion of implementing a PCI Card on the 6400 riser. Maximized PCB Real Estate study with PGA Prototyping interconnect for development. SATA seems to be the consensus for such things. Looks to be a bit of room...

Went a little wild on the 6360 side of things today. 😁 In the day, I bent the harness backstop on the bottom of the Optical Bay up and removed the speaker so I could slide a full length Radius Thunder card thru above the harness. Elongated TriSlot Riser should do the same from the looks of...

6500 Schematic availability helps a lot!

THX, will check out. Comparing these 1996 pages to the 1999 revision ATM.

1996 2nd Edition: https://wiki.preterhuman.net/Designing_PCI_Cards_and_Drivers_for_Power_Macintosh_Computers Has anyone seen a link to the 1995 first edition of DPCICfPMC?

Found another Reserved Pin used as an alternate input for Slot B. Apple! :rolleyes: Slot A on the 6x00 riser connects to A7-Interrupt _C as might be expected. However slot B connects instead to A9-Reserved as opposed to any standard PCI setup. So we have Interrupt_C and Request lines for...

Thanks for the confirmation. Have plans in place to knock together a test frame with easy access to both sides of drawer/harness boards.

Thanks, that's a very helpful answer in the negative. I'll check the discussion out and your video as well. I've wondered about that for quite some time, but I've never had much interest in the CC. When it was covergirl'd on one of the Mac mags I thought it was hideous and definitely not a...

Time to start playing breadboard checkers soon. 1 - test that cable riser works 2 - test Slot B connections 3 - explore turning CSII into a full PCI Slot by snatching signals Long shot will be locating the signals for Slot C. @trag and I are wondering if Apple didn't implement a connection from...

Oops, didn't specifically mention switching to from surface mount to thruhole connectors. Dot pitch of PCI is the same as Nubus on the solder side. Solder and component sides are each splayed out to a pair of staggered rows. The soldertail pins will keep everything in alignment mechanically...

Splitting NuBus connector toward the centerline and soldering the thruholes with a PDC Cardfor alignment works a treat. Same should work for your SMT connector? What's the width of the CC/TV/550/575 logic boards? Same as the 630 & its offspring? Got another trick up my sleeve for the test setup. ;)

Love your board! what connectors did you find for the harness? If you do just the PPC section, thruholes for backplane connectors makes it perfect for doing a riff on one of the thin frogdesign studies with LCD. That would provide handy mounting points on the rear for BlueSCSI, tiny IDE to SD...

CSII->PCI

Wasn't creating a non-related tangent in need of a new topic I think. I was suggesting/showing the later system's drawer slides as mounts for the boards involved in your specific use case as illustrated in your first pic. Apple appears to have developed the CC/TV/550/575 harness connector's form...

Just remembered the clips @-SE40- printed for his Takky Mac project: His CAD model should be easily extended and the side runner/clip morphed into bolt down stands. The harness clips wouldn't be necessary for your purposes I think? The board connector interface is plenty rigid enough as is...

Welcome, sounds like this is the place for you! You're lucky to have so many locals in MN. What is it, the winters up there that drive you folks to this brand of craziness? I wish there were more tinkerers in NC, count's now three others that I know of.

LOL! No doubt, but ISTR he had reliable info on the method Apple had squirreled away for it and the 12" RGB 'zaTopper. Both were in development at the same time I think? I always wondered if they were resolution limited because of screen size/legibility for the CC and hobbling the low end for...

Thanks for the bump, missed it. Besides, there's so little discussion here the place seems dead. Be that as is may, the black makes it the second ugliest Mac ever shipped. ;) I say go ahead and paint the translucent fugliness black as well. Might help to camouflage its horrid rumpled bed throw...

Hrmmm? Has that database been updated with the info @techknight posted about doing 640x480 on the CC "the right way?" IIRC he said he'd do so, but never saw him post on how to do the same with the 12" RGB for LC.