PET 2001 oddity - solved!

Woohoo! Turned out to be dead simple; yet another blown 2114. I figured the chip @ $0400 (i.e. the start of BASIC) was faulty, seeing as how the machine wouldn't take a single line of BASIC. So, I swapped the appropriate bank out to another bank - and presto! BASIC worked again. Having done this, I then swapped *one* of the two chips (according to the schematic, there are two chips for each $0400 block of memory - why is this?) back to its original spot, and presto again - no BASIC. Swapped that chip for the one remaining spare, and presto^3! BASIC again. So, now I need more 2114's as an insurance policy... Meanwhile, I thank the list *again* for their invaluable help (Ethan, Mike & Pete in particular in this case). What would I do without you (except preside over a collection of steadily failing machines)? -- Cheers, Ade. Be where it's at, B-Racing! http://b-racing.com