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From: "Arkady V.Belousov" <ark AT belous DOT munic DOT msk DOT su>
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Date: Sat,  2 Oct 2004 07:20:19 +0400 (MSD)
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Subject: Re: Undesirable reboots
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Reply-To: opendos AT delorie DOT com

Hi!

1-οΛΤ-2004 17:01 _shadow AT shadowgard DOT com (shadow AT shadowgard DOT com) wrote to
opendos AT delorie DOT com:

>> >You need EMS for the upper RAM.
>> Only in case you need EMS. In all other cases it is better to use
>> 'himem.sys /ChipSet=RAM' or URAM or UBMPCI or ...
sc> You misunderstand. You need *something* that acts as an EMS driver to
sc> get RAM mapped into the empty spots in the "upper" RAM area.

     _You_ misunderstood. To get upper RAM, you _not_ need _neither_ of EMM,
nor protected mode. This is casuality (from MS?), that its program EMM386
does _both_ switching to protected mode (to make possible mapping RAM in any
386+) _and_ provides EMS support. But again: to get UMB you need neither EMS
(for example, you may run EMM386 with option NOEMS), nor protected mode (if
_chipset_ supports memory remapping, you may force it with help of programs
like UMBPCI without switching to protected mode).

     (BTW, UMB control API is a part of XMS API).