On 7/25/2025 2:17 PM, tsiegel--- via Freedos-user wrote:
8088 isn't the same as 8086. It's similar, but internally, the 8088
is different than the 8086, so that might influence the
capabilities of the program. You'll need to emulate a straight 8086
to get the full picture as to whether it can handle them or not.
the 8088 chips (at least the nec V20 my xt machine had) could handle
the 80186 command set, this allowed it to run (some, most?) 80286
programs. I was able to run 286 specific versions of multiple
programs when I had an IDS 8088 switchable between 4.77 and 8 MHZ. It
sure was nice, although I'm not sure it speeded things up all that
much, sometimes the 286 specific versions would have additional
features. Minor
Sorry Travis, but this is utter nonsense. For all practical purposes, at
least as far as anything programming is concerned, the 8086 and 8088
chips are identical. There is only a difference on the hardware level to
work externally on an 8bit wide data bus, to be able to work easier with
at the time existing peripheral 8 bit chips.
And the fact that the V20/V30 chips understand (most of) the 80186
command set is because NEC decided to add those, just like the added
8080 emulation mode. Beside being a tad faster than the equivalent Intel
chip, there is no function difference between an V20/V30 and an Intel
8088/8086.
Ralf
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