PET 2001 oddity - solved!

From: Adrian Vickers <>
Date: Sat Jan 18 07:25:01 2003


Turned out to be dead simple; yet another blown 2114.

I figured the chip _at_ $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!
Received on Sat Jan 18 2003 - 07:25:01 GMT

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