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Home Forums 68kMLA What Is This? — #1
Post #1 by CC_333
Source Forum68kMLA
Category68k
Post DateSun, 1 Apr 2012 - 23:16
Original URLhttps://68kmla.org/bb/threads/what-is-this.25086/
Post
Hi, All,

I have here some sort of card (accelerator?) that was installed in my new-to-me Mac IIfx.

Google is unable to give me relevant information. However, I do know that it is manufactured by Newer Technology, as it is printed on the bottom side of the card (see photo).

Here is what I have learned so far through a visual inspection:

It has a socket on top, inside of which the original 40 MHz 68030 CPU was installed. The pis on bottom connect to the Mac IIfx CPU socket. On top of the cards PCB, there is a two pin header, to which a pair of wires attach. The other ends have small clips, which attach to diagonally opposite pins of the Mac IIfx clock oscillator.

It has four oscillators of its own, each 10 MHz faster than the first, with a range of between 80 and 110 MHz.

Here are some photographs:

Top view of card. Notice the four clock oscillators:

Top View.jpg

Bottom view of card:

Bottom View.jpg

c

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