🚀 go-pugleaf

On Sun, 27 Jul 1997 04:15:09 -0500, Mark Owen Scott <tri...@cs.utexas.edu> 
wrote:
>	Sorry I can't help you with your problem, but I have a similar
>situation.  My girlfriend's Cyrix 6x86 P-200 claims to have no upper
>memory.  None, nada, zip.  This means that, while running in true DOS
>mode, it can't run a vast majority of programs.  I suspect that Win95
>has some legacy program that takes that space even when rebooting into
>MS-Dos mode.  I think I can get by with a boot disk, but those are a
>royal pain in the [], and I'd rather find another way.

>	From what I've seen, no PC could run Win95 or any modern program
>without that upper memory, so I assume it does exist.  What gives?

It seems you never had a computer without win95...

Normally plain PCs don�t have upper memory. The trick is: memory can be
remapped. Any 4k page can be put to any other 4k position by hardware.
Upper memory is created by moving an unused area of memory to that location.

Under plain DOS this is a very important thing to load drivers into upper
memory. So you can be sure there is a driver. It is called EMM386. 

Since I don�t know Windows 95 I can�t say how to install that driver. It�s
easy to do with Novell-DOS. Just put a line like

DEVICE=C:\NWDOS\EMM386.EXE /U=c800-efff /frame=e000

into the config.sys  It must be similar with win95 (look in the manual
under EMM386, it should be described). Of course, first you must get rid of
that GUI.

I doubt win95 needs upper memory but it most likely will produce it�s own
(for compatibility). The real modern DOS-programs don�t need upper memory
either since they can directly access the whole memory without such tricks.

Bye,

Peter Steiner
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