colas@lemur.inria.fr (Colas Nahaboo) (03/15/91)
Well, if you have at least a Rev. 6a (or later I presume) motherboard, on your A500 it is even simpler than the explanations I previously posted: - find jumper JP2 (up-left of 68000) up and middle plots are connected, you must cut this and connect middle to low. - find jumper JP7A (near A501 connector), and totally open it. (up and middle were connected) that's it!! no trace to cut, easily reversible... This will work with any 512K trapdoor ram expansion to the 500. My 500 has now 1 Mega of chip ram, and works perfectly... -- Colas Nahaboo, colas@sa.inria.fr, Bull Research, Koala Project, GWM X11 WM Phone:(33) 93.65.77.70(.66 Fax), INRIA, B.P.109 - 06561 Valbonne Cedex, FRANCE.