8080 vs. 8080A - test-drb@ccmp.vtda.org

30 Sep 2001

That agrees with my 1976 and 1978 intel data books.

Allison

-----Original Message-----
From: Michael Holley &lt;swtpc6800(a)home.com&gt;
To: classiccmp(a)classiccmp.org &lt;classiccmp(a)classiccmp.org&gt;
Date: Sunday, September 30, 2001 7:02 PM
Subject: Re: 8080 vs. 8080A

...
 Intel did not refer to clock frequency but to
Instruction Cycle to indicate
...
 the speed of the chip. From Intel Component Data
Catalog 1978 page 11-11

8080A      2 us
8080A-1  1.3 us
8080A-2  1.5 us

My SDK-80 Users Guide has schematics dated July 1975 and show an 8080A.

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Michael Holley
holley(a)hyperlynx.com
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