21 Dec
2001
21 Dec
'01
12:27 p.m.
When you get over it...
Talking about 20mhz 65C02s and other "fast" parts that didn't exist when
even the z180 (orginally 64180) was introduced is equally bogus.
A Pentuim anything running a Z80 emulator is still emulation and not
native silicon.
Now cut the crap.
Allison
-----Original Message-----
From: Richard Erlacher <edick(a)idcomm.com>
To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Friday, December 21, 2001 7:06 PM
Subject: Re: 6502/Z80 speed comparison (was MITS 2SIO serial chip?)
We went through all this a couple of years back under
the same heading.
If the
Z235980 at 234 THz is code compatible then, if I
understand you
correctly, it IS
a Z80, right? Even though the Z180 won't fit in a
Z80 socket, you'd
sell it as
a Z80 anyway, right? Even though it didn't even
exist back when it
mattered,
you still insist it's a Z80, right?
My Pentium executes the Z80 code just fine at about 75x the speed of of
a Z80.
Does that mean it's a Z-80?
We're comparing CHIPS, not philosophical constructs. If it IS a Z80, or
Mostek
3480, or something else EXACTLY a Z80, i.e. built under
the license,
pin-compatible, code-compatible, etc. then MAYBE it's germane to this
discussion. No chip that isn't a pin-compatible substitute commonly
referred
to
as a Z80 back in the days when the Z80 mattered is
germane to this
topic. If it
won't plug into the socket of a Z80, FORGET IT,
because it's not a Z80.
If
that's too difficult for you, then please ask an
adult why a 47-ohm
resistor
isn't the same thing as a 75-ohm resistor.
I'm sure glad you're not trying to sell parts any more, Allison. I'd
hate to
have to argue with you that the choke you're trying
to pitch isn't a
diode.
Dick
----- Original Message -----
From: "ajp166" <ajp166(a)bellatlantic.net>
To: <classiccmp(a)classiccmp.org>
Sent: Friday, December 21, 2001 4:24 PM
Subject: Re: 6502/Z80 speed comparison (was MITS 2SIO serial chip?)
> From: Richard Erlacher <edick(a)idcomm.com>
>
>
> >There are lots of things that you could compare, but the first things
> you've got
> >to leave out are the ones that aren't a Z80, which immediately
deletes
> the Z180,
> >and Z280. The Z80 is not around any more than the 6502 is around.
> There are
>
>
> Why? they are still z80 core and code compatable. While they add
things
like
serial IO, timers and MMU they are Z80, maybe more so than 65C02.
Allison