Re: Emulating DOS/x86 Protected Mode: AIIEE! THE TENTACLES!

On Fri, 1 Apr 2005 01:22:52 +0000 (UTC), Scott Moore
<spamtrap@xxxxxxxxxx> wrote:

>Alex wrote:
>> It's based on (and is fairly compatible with) a CPU 27
>> years old, but it can work with all the newest technology. There can't
>> be many other CPUs that can boast that.
>
>* 68000 series, still used extensively in embedded, and the Palm Pilot series.
>* IBM 360, now appearing at a store near you as the series Z mainframes,
> which is about 40 years old (!)
>
>Of course, there are a lot of other CPUs that have been around that long,
>and are still shipping (z80, 8051), but I assumed you meant that have been
>evolving in instruction set and bit size.

<retrospect>Yes, I did.</retrospect> For some reason, the
smaller-scale microprocessors (z80, etc) escaped my memory when I
wrote that post, and I don't know much about mainframes.

The Z80(A) is a very versatile chip. I've seen all sorts of uses for
it. I've got an old ZX Spectrum somewhere at home, but I think the
EPROM is dead. I was playing around with the contacts at the back of
the machine some years ago and... something happened. Now, all it does
is display pretty colours on the screen as if it was being constantly
powercycled.
Ah, well. At least I can now rip the CPU out of it and build something
else.



Alex Davidson

----------------------------------------------------------------------

'You are in the presence of a System Administrator. KNEEL.' --Unknown

.

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