CSPPC & A3000 desktop?

[alexh]

Installing the _int2 line for the A3000

If you are not comfortable with a soldering iron then you should NOT try this. It would be better if your dealer did the upgrade.

First thing to do is pull the Motherboard of the machine. It is a pain in the butt to work with the A3000 as you will know if you have ever installed any hardware or upgraded any of the custom chips.

Next thing is to look for the FastSlot-CN606 and the CIA 8520-U350. What you need to do is run a wire from U350 Pin 21 to CN606 Pin 82. I use wirewrap type wire, it is thin.

If you look at the back of the Motherboard (the bottom side) at the pins that make up the CN606 you will see 1 of the solder pads that is square. This is Pin 1. With Pin 1 at the top Pin 2 is right and a bit up from pin 1. Pin 3 is right and a bit down from Pin 2. Pin 4 is right and up from Pin 3... then pin 5 starts a new row.

The CIA U350 is across (going left) from the FastSlot. It is about 3 inches from the left side of the Motherboard. It is best to find the chip from the top side then flip it over this way to can be sure you have the right line of pins. Again find pin 1 by looking for the square solder pad. The pin you want is Pin 21. This is diagnal across the chip on the other side.