7 Aug
2008
7 Aug
'08
2:20 p.m.
On Thu, Aug 7, 2008 at 12:54 PM, Chuck Guzis <cclist at sydex.com> wrote:
ISTR Windows 3.0 "standard mode" on a 386
could be considerably
faster than using the 386 "enhanced" mode--if you had enough memory
installed.
It was for Windows apps, but the penalty was a single non-multitasked
DOS box. In "enhanced mode" windows apps were living in a shared v86
machine, rather than under 286 protected mode. It took a lot of
fiddling with page tables to keep them happy without really enforcing
a 640K shared address space.
Pardon me, I'm having flashbacks about locking and unlocking memory handles.
Eric