MPC4000 jumpers: with no CD drive.

Anyone know how the jumpers on the digital I/O board and the main I/O board should be set when you don't have a CD drive, or does it not matter.

I have the service manual, and the info is in there - Doh.

Basically if you want the CD drive, Digital board and MPC to work in harmony.
The jumper on the PC I/O ADDA board needs to be in the "SET" position.
The jumper on the Digital I/O board needs to be set to the "SHORT" position.
Don't forget the 2 cables that go from the CD Drive to each board as well.

So if you DON'T have a CD Drive but you have the digital board I think it is safe to assume that the jumpers should be in the opposite position, like this.
The jumper on the PC I/O ADDA board needs to be on the 2 left most pins not "SET"
The jumper on the Digital I/O board needs to be set to the "OPEN" position.