• Updated 2023-07-12: Hello, Guest! Welcome back, and be sure to check out this follow-up post about our outage a week or so ago.

Odd Quadra Motherboard

Trash80toHP_Mini

NIGHT STALKER
Topic popped up in search, has there been more testing done?

@C: X100 series has traditional I/O port at rear form factor with that inexplicably NASTY video connector and despicable adapter cable.

My Radius 81/110 boards have the traditional DA-15 video connector. Apple had its head up its (_|_) Radius rocked! [:D] ]'>

 

Cory5412

Daring Pioneer of the Future
Staff member
I made a typo in my post, what i meant about the 8100 was whether it was structured like the 840av, which has its internal i/o connectors (scsi,e tc) along the top of the machine, or if it's closer to the 800, which if I understand correctly, has its internal i/o connectors elsewhere and the power supply slots directly into the board (as with the IIcx/ci/vx/vi/P600/Q700/Q650).

Unless by "rear" what you meant is that like the scsi port et al are at the front of the motherboard?

Of course, within that range, different machines have different things, ethernet, sound input, the beautiful HDI45 connector on the 7100, etc., so not all the cases are directly compatible without dremeling, but the point is that the internal structure on those machines is all the same.

 

Compgeke

Well-known member
8100's closest to an 840, relative to the 68k era macs. Connectors along the top of the board and a PSU that plugs in rather than slots in.

Here's a pair of boards, one 110 Prototype and an 80 MHz oddball someone threw a crystal socket on.

1xWTsnn.jpg.cf4fe0684b003e513778fa5058c38071.jpg


 

trag

Well-known member
Architecture of the 840AV and 8100 are very similar. They both use the AMD AM79K950 chip for serial ports, slow SCSI and ethernet. They also both seem to have similarly configured RAM addressing support.

 

IIfx

Well-known member
My 800 has a power supply cable that comes in through the top side of the motherboard. It also has a socket on the board for the power supply to slot in directly like in the IIcx/ci/700/650. The socket is left unused.

 
Top