Re: ms pac voltage trouble

<x-flowed>I will have to try that sometime, can't hurt!

Still it might surprise me to see it works, but perhaps if it is a
bad (open) output on the RAM then your idea would certainly work even
with static RAM like 2114's.

John :-#)#

At 6:47 PM +0000 3/18/05, martin@guddler.co.uk wrote:
>Well, it's certainly far from foolproof, but it takes no time at all to
>quickly do and if your problem is completely solved when piggybacking a single
>IC then it was worth it :)
>
>I often find it helpful with logic chips too but that is definately not
>foolproof, the bad chip often still affecting the inputs and outputs of the
>good chip. Again, it's quick and it sometimes get's me quick results though.
>
>Martin.
>
>John Robertson <jrr@flippers.com> wrote:
>
>> Generally speaking that only works with Dynamic RAM that has floating
>> outputs. I'm surprised it works with 2114s, however it should work
>> with the Video RAM on the Pacman/Ms Pacman boards.
>>
>> John :-#)#
>>
>> At 12:26 PM -0500 3/18/05, Electronicamuse@aol.com wrote:
>> >In a message dated 3/18/2005 8:47:19 A.M. Eastern Standard Time,
>> >martin@guddler.co.uk writes:
>> >
>> >More times than not i find piggybacking each of the 2114's in turn
>> >with a known good one will reveal which one(s) it is
>> >
>> >Do other folks concur that this can be done? I am not looking for
>> >100$ accuracy, but any fast tips can be of help.
>> >
>> >Thanks
>> >
> > >Dave
> >

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</x-flowed>
Received on Fri Mar 18 13:36:09 2005