On Sun, 7 Mar 1999, Will Baldwin wrote:
> My Tandy 1000HX, which is an XT-class machine, originally had an
> 8088-2 cpu, capable of either 4.77 or 7.16 Mhz. I had heard that if I
> replaced the chip with a NEC V20, I would get faster speed. I did
> that, and it worked. The V20 runs at the same Mhz, but instructions
> take fewer clock cycles, I've heard. Some instructions are faster
> than others.
>
> In addition to the faster speed, I've heard that the NEC V20 can also
> run CP/M programs, and programs compiled to use 80186 instructions.
> I'm not sure what 80186 instructions are, but they might be a subset
> of 80286 instructions that run in Real mode only. My question is if
> anyone is actually using this chip to run CP/M or 80186 programs, and
> which programs they are, and where available, in case I want to do the
> same. Thanks.
>
I think you might be confusing the NEC V20 with the V30.
V20 was the NEC upgrade for the 8088 and the V30 was the 16bit upgrade to
the 8086. No? Just my recollection.
Somebody correct me if I'm wrong.
Cheers,
~pete
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