Replying to a message of Ross Cassell to Bob Ackley:

 RC> Hello Bob!

 RC> 19 May 08 04:54, you wrote to me:

 RC>>> There is no such thing as conventional memory, expanded or
 RC>>> extended memory you dolt in a 32 bit operating system.

 BA>> But memory *is* managed on a 32 bit - or 64 bit - OS, now, is it not?

 RC> It is not boxed up and contained within such limits.

 RC> In the days of DOS, one was contained within the 640KB limit for what
 RC> was conventional memory, some authors were able to code an overlay
 RC> file to contain additional program fascilities, if expanded memory
 RC> was present they could load the overlay into it to speed it up, else
 RC> it was simply read in from disk.

 RC> Under 32/64 bit OS'es their isnt such limits as what DOS memory
 RC> management provided.

I know all of that, Ross, I built my first microcomputer (a Heathkit H-89,
used it for
years and still have it, although it's dead because the ROM chip in it -
which would be
the BIOS chip in a PC or clone - went bad and it can't boot up without it)
with a soldering iron in 1978 and the first microcomputer operating system
I learned about was HDOS.  FWIW, OS/2 isn't subject to those limits and
neither, AFAIK, is Linux.  Come to think of it, I don't think CP/M-86 is
either, I'll have to look into that one of these days.  After all,
according to M$ guru Bill Gates, nobody will ever need more than 640 KB RAM
in a personal computer...


--- FleetStreet 1.19+