Re: RAM Errors with 16K card

["Antony Mauget" <amauget@hotmail.com>]

Actually, it is a 16K RAM card with 4116 on it... I have tested it in slot 1
and 2. It's the same result. It doesn't fit the AUX connector since there
are not enough pins on the connector.

Perhaps this type of card won't designed for a //e ? I have no information
about the constructor, reference, ... Just one inscription : 16K RAM.
Curiously, there is a variable resistor (don't know the english word) at the
top of the card.

At the beginning, I just want to get extra RAM (64Ko + 16 Ko) on my //e. But
it seems not possible (not that way).

Antony

"Michael J. Mahon" <mjmahon@aol.com> a �crit dans le message de news:
20041114221715.07716.00000655@mb-m01.aol.com...
> Antony Mauget wrote:
>
> >I'm experiencing Ram errors during self test on an A2S2064F Apple //e
> >equiped with a 16K RAM card. It shows RAM: F13 F10. Everything is fine if
I
> >remove the card.
> >I have 4116 chips so I made few tries with different chips : it always
the
> >same !
> >By the way, I've removed all the 4116 and the diagnostic is the same !!!
> >
> >So here are my questions :
> >1) Can I use a 16 Ko Ram Card on this type of Apple ?
> >2) If the Ram chips are OK, could it be a problem with the logic chips ?
>
> I'm a little confused by your question.
>
> The //e has 64KB on the main board, so adding a 16K card doesn't
> make sense.  Further, almost all of the 16K cards manufactured
> had a 16-pin DIP jumper to go in a DRAM socket on an Apple II or II+,
> so I can't imagine how you've connected it in a //e (where the DRAM is
> 64Kbit chips, far from the slots).
>
> Perhaps you mean that you have a 64KB AUX RAM card, usually called
> and "extended 80-column card", plugged into the AUX slot (forward of
> where "slot 0" would be if a //e had a slot 0).
>
> The DRAM chips in such a card are 4164s not 4116s, so replacing them
> with 4116s would not help much...
>
> Say more about what you have and how you've connected it.
>
> And if it really _is_ a 16K card, just remove it and everything
> will work fine as a 64K system.
>
> -michael
>
> Check out parallel computing for 8-bit Apples on my
> Home page:  http://members.aol.com/MJMahon/