From:	Aylott Mark <AylottM AT thmulti DOT com>
To:	DGJPP Newsgroup <djgpp AT delorie DOT com>
Subject:	DPMI Host limited to 64MB physical memory on Compaq PC ??
Date:	Fri, 30 May 97 14:51:00 PDT
Message-ID:	<338F4C05@smtpgate.villingen>
Encoding:	52 TEXT

Does anyone have any reasons why no matter what
I do in the way of machine config I cannot get more
than 64MBytes allocatable physical memory when
the machine I am using has 128MBytes physical
memory ??

The application I have is to generate a digital video
transport stream, and at the output speed required
virtual memory access time is too long. I therefore
disable the swap file and load the transport stream
data into physical memory.

I have tried a variety of HIMEM.SYS drivers
and have found that the /EISA argument is
necessary otherwise the program sees only
16MB.

I have read the DJGPP FAQ's and have found
nothing to suggest why the 64MB limit exists.

Here's my setup
 --------------------
Software :

gcc2721b GNU GCC 2.7.2.1 for DJGPP V2
rhide12b RHIDE Version 1.2 (binaries)
csdpmi3b CWSDPMI binary distribution (release 3)
O.S : Dos 6.20 - exe runs from DOS not Windows
Memory Drivers : HIMEM.SYS /EISA
No EMM386 loaded

Hardware :
Compaq Deskpro 4000 Ser.No. 8651bbc64000

This may be a Compaq specific problem, but
I have no other makes of machines around
here to prove this.

Any ideas ??
Thanks
Mark

___________________________________________________________________
  Mark AYLOTT  
  Digital Test Lab.

 Thomson multimedia R&D France          Tel: (+33) (0)2 99 27 36 09
 1 Ave de Belle fontaine,          Fax: (+33) (0)2 99 27 30 05
 35511 CESSON-SEVIGNE, Cedex, France.   E-mail: aylottm AT thmulti DOT com
___________________________________________________________________

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