If you go
this route, I'd love to have one of your main boards...Mine
 is fried and looks like one of the PALs. I already xchanged the dedicated
 ICs with a //e and found no TTLs fried :'( 
 Are the PAL equations known?
I'd be happy to burn a few GALs with
 equivalent equations and send them your way for the cost of postage. 
 
    Danke, Dave! But I have a PAL burner (Beeprog, from Elnec). The problem
is exactely the equations :o) They are not known :(
    And I'd love to get a newer //c board, with the memory expansion pinout.
I'm desiging a SRAM card for the //E and would love to adapt it for the //c
    Thanks a lot
    Alexandre :o)