RE: 768k XT?

[Dan Olson <dano@agora.rdrop.com>]

>  > Has anyone ever run into this before?
>
> I've run into similar - in my case, a Kyoshui XT with 4x256k
> mapped as 640k of normal RAM and 384k of EMS RAM (permanently
> in the D0000-DFFFF address range.

Interesting, it's nice to know that someone else thought of such a thing,
and to know there there is always a chance.  Is there any indication
(durring the memory check or by any other method) that this memory is
present?

 > Technically, it's possible that one of the 256k banks has one
of > the address pins permanently tied either high or low, and thus
> that the extra 128k isn't mapped anywhere as a result.

Sure, that's actually what I suspect to be the case.

>  > Does anyone have any DOS utilities or ELKS utilities that
>  > would test for upper RAM even though the BIOS says it's
>  > not there?
>
> As far as RAM above 1M is concerned, the XT processors don't
> support it.

Sure, I'm just refering to the memory between 640k and 1M, if present.

	Dan