On Thu, 28 Mar 2019 13:18:07 +0000, "J. P. Gilliver (John)"
wrote:

In message ,
James Davis writes:
On Wednesday, March 27, 2019 at 3:20:30 PM UTC-7, Average Person wrote:
... I recall back in the DOS days, there was a
command that could be typed to determine memory, but I am not sure if
that works with modern OSs, nor can I remember the command.

The DOS command is MEM. Try MEM /? to get help for it. Do it in a DOS
command window on modern Windows OS's.

I just tried it (Windows 7-32, ~3G memory), and got

C:\mem


655360 bytes total conventional memory
655360 bytes available to MS-DOS
598480 largest executable program size

1048576 bytes total contiguous extended memory
0 bytes available contiguous extended memory
941056 bytes available XMS memory
MS-DOS resident in High Memory Area

, so I don't think it's that useful for what is wanted here. (I tried
the /p /d /c options too, but I think they still just worked on the
bottom 640K or 1M.)

Same here (XP SP3)
That is what you would expect on any real DOS machine if the memory
was maxed out.
There are DOS drivers that will give programs access to memory above
that within the program but DOS itself only sees 1 meg and a big chunk
of that is reserved so it looks like 640k. As Bill Gates said "who
would even need more than 640k"?