Re: Mousecard HW question...

["Roger Johnstone" <rojaws@mac.com>]

In article <3D08055C.4A2BD15@computer.org>, Randall Frank 
<randall-frank@computer.org> wrote:

> "Michael J. Mahon" wrote:
>>
>
> ...
>
>> Of course, if it has no label or a translucent label, then
>> if it spent enough time in sunlight, or under very bright
>> artificial illumination, data could eventually be lost.  The
>> critical issue is the cumulative amount of short-wave
>> ultraviolet dosage.  It's bad for humans and EPROMs.  ;-)
>>
>> It sounds like you have something else wrong.
>
> That's what I was afraid of (and the way things are looking).
>
>>
>> Does it do the same thing in other slots (not 3, of course)?
>> Are the slot connector and contacts clean?  Are all the
>> socketed chips on the card seated, and have they been
>> loosened and re-seated recently?
>
> Yes, I reseated the socketed chips and tried other slots
> (including one I know works) with the same results.  Looks
> like I will need to work this one backward from first
> principles...
>
> Is there any other component on this board that I should
> suspect over others?
>
>
> BTW: I really appreciate the input, even if I never get
> this card up and running, thanks!

Something simple to try would be to swap the EPROM with a known good one of
the same type from another card. It won't matter what's in the EPROM as long
as you don't activate the card, but you should be able to read the data
stored in it if the rest of the card is OK.

--
Roger Johnstone, Invercargill, New Zealand

Apple II - FutureCop:LAPD - iMac Game Wizard
http://homepage.mac.com/rojaws
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