6502/Z80 speed comparison (was MITS 2SIO serial chip?)

From: ajp166 <ajp166_at_bellatlantic.net>
Date: Fri Dec 21 20:27:25 2001

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.


-----Original Message-----
From: Richard Erlacher <edick_at_idcomm.com>
To: classiccmp_at_classiccmp.org <classiccmp_at_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
>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
>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.
>that's too difficult for you, then please ask an adult why a 47-ohm
>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
>----- Original Message -----
>From: "ajp166" <ajp166_at_bellatlantic.net>
>To: <classiccmp_at_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_at_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
>> 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
>> like
>> serial IO, timers and MMU they are Z80, maybe more so than 65C02.
>> Allison
Received on Fri Dec 21 2001 - 20:27:25 GMT

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