Mythical Slot C in the 6400 Alchemy Architecture & CSII Insanity

Trash80toG4

Active Tinkerer
Apr 1, 2022
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Bermuda Triangle, NC USA
THX, will check out. Comparing these 1996 pages to the 1999 revision ATM.

Macintosh PCI-DEV-1996-p6.jpg


Macintosh PCI-DEV-1996-p7.jpg


Macintosh PCI-DEV-1996-p8.jpg
 

Trash80toG4

Active Tinkerer
Apr 1, 2022
910
260
63
Bermuda Triangle, NC USA
I've got a great start on buzzing the 6x00 riser. Have to recheck my findings, but it looks like nine signals only make it up to Slot A from the motherboard connector. One of which is perplexing, B18 in the PCI Spec is +5V. What gives. my mistake of something AppleFishy?
 

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  • Buzz-Lines-012A.PDF
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Last edited:

Trash80toG4

Active Tinkerer
Apr 1, 2022
910
260
63
Bermuda Triangle, NC USA
Closing in just a bit. First step will be setting one of my cable risers up as Slot_B which check board design for my TwinSlot Riser project.

Alchemy-QuadSlot-001-DELTAX.jpg


Second step will be playing musical signals with the three remaining Reserved Pins on the Logic Board connector. If that pans out and Slot_C is brought out of the crypt it'll be on to yet another blivet stuffing, a TriSlot Riser for the 6x00 drawer is looking more and more possible the more I stare at it. 🤪
 

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  • Alchemy-QuadSlot-001-DELTA.PDF
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Trash80toG4

Active Tinkerer
Apr 1, 2022
910
260
63
Bermuda Triangle, NC USA
Tonight's Dirty Vodka Martini Powered utter simplification of the DELTA requirements for Slots B & the Mythical Slot C:

Somebody please give me some feedback here! MLA thread has had some serious input in the last week or so:

 

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  • Deltax.PDF
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  • 4xBreadboard.jpg
    4xBreadboard.jpg
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