🚀 go-pugleaf

joe@proto.com (Joe Huffman) writes:

>kibirev@csa.bu.edu (oleg kibirev) writes:

>>I have a 286 with 1M of RAM & no place to put more memory. The

>>Now the question. I've never written protected mode programs, but I
>>think that if BC 3.0 is using DPMI, it should be possible to give
>>it as much "extended memory" as it wants by swapping to the disk. Is
>>there a program to replace DPMILOAD that will do this?

>A '286 machine can't implement DPMI.  Sorry...
YES IT CAN!

DPMI is perfectly compatible with a '286. It is VCPI that needs at least
a '386.

But the trouble is, answering the original poster: BC 3.0 wants "real"
memory to run in. You cannot execute directly from a file on disk. It
should be in memory. Period.
 
(To keep the nitpickers away: yes, I know the '286 has limited support for
virtual memory too. You think it is possible? OK, then write a '286
DPMI implementation that supports virtual memory. Yes, of course this will
be 1000x slower. What did you say? Too much work for too few gains?)

-- 
-- Jan-Pieter
cornet@duteca.et.tudelft.nl