22 Feb
2009
22 Feb
'09
6:52 p.m.
On Sun, Feb 22, 2009 at 8:42 PM, Chuck Guzis <cclist at sydex.com> wrote:
V20 emulation mode was enough of a problem that we
eventually
disabled it in 22NICE. x86 machines were getting powerful enough
that software emulation was faster anyway. We could also do things
in software emulation that we couldn't do in V20 mode, such as trap
I/O accesses and redirect them to user-written servicers.
I understand wanting to minimize user frustration, but back in the day
(1991?), I did stick a V20 in my XT clone specifically to run 22NICE
to run the CP/M versions of the Scott Adams games (since those were
the easiest versions to find at the time). For what I was doing, it
worked great.
-ethan