He's refering to the Rom tower in the A3k.
Not an A3k-tower.
I 'KNOW' I installed the chips wrong once in
my A3k. I reinstalled them correctly and the
machine booted just fine.
As to the rom tower orentation, I cant sware to
it but I don't think that will hurt anything if
its wrong either. It just wont boot, Black screen.
If it wern't so much trouble, I would open mine up
to refresh my memory.
Mel