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MS-DOS Gerater than 640kb RAM?


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#1
aoresteen

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I vagely recall that you can get up to 720KB of RAM in MS-DOS if you free up some reserved memory for the ega card (maybe CGA?).

I'm not taking about extended or expanded or UMB, just conventional memory. As I reall there was a utility that would let you do it.

Anyone know what I'm talking about?

I've used MS-DOS since 1985 or so.

Thanks!

Tony
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#2
Tyger

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Being a sort of history buff of older OSes I have MS-DOS6.2.2 on a couple of disks larger than 512mb and have used them on a computer, the one I'm on right now, which has server slide trays installed so I can work with different disks and OSes, quite successfully. What you have to do is load himem.sys and emm386.exe into ram. I think you have to make these entries in the config.sys file at the end of the other entries.

device=C:\dos\himem.sys

device=C:\dos\emm386.exe
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#3
aoresteen

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Thanks, but that's not what I'm asking about. I used to have a utility that would free op 80KB of RAM just above the 640 barrier.

I use the EM386 driver to get to the UMB & RAMBOOTS to optimaize it but I wanted to open up the area just above the 640 barrier .
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#4
aoresteen

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I found a utility that takes 96K from the VGA card and expands conventional memory from 640k to 736k

It's called AddMem. Loacted at:

http://www.bookcase....til.memory.html
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#5
gerryf

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memmaker was a utility included with dos 6.22....try running that
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