On 4/7/09, Bill wrote: > O.K., remind me again, other than the fact that the Coco will boot, how do I > know if the 512K upgrade was a success?? > > Thanks > ----- You could try this: 10 POKE 240,0 20 LPOKE 65776,1 30 IF PEEK(240) THEN PRINT "128K" ELSE PRINT "512K" Darren