8080 vs. 8080A

"The i8080A is essentially twice as fast as the standard i8080 and COULD be used more easily with low-power logic since

demands aren't as stringent". Ok, that's a good start. But, I don't think "low power" TTL (transistor transistor logic) had anything to do with the complexity of the code being executed on the

True? I had assumed that the references to the 8080 only being compatible with "low-power TTL" and the 8080A being compatible with "standard TTL" had something to do with the support chips (Ram,

etc) that could be used with the 8080 vs. the 8080A. Since I'm new to this mail list, let me explain why I would show up here and ask such a question to begin with. I'm a chip collector. I am trying to document the differences between

different early Intel microprocessors. Not worried about massive

just the major differences (PMOS, vs. NMOS, vs. HMOS, clock speed, transistor count, etc). The only microprocessor that I don't have a good handle on is the 8080 and the difference between the 8080 and 8080A. I also know that the 8080 was introduced sometime around April 1974. I have not been able to find an introduction date for the 8080A. Was it introduced at the same time? Does anyone know? I also need an Intel C8080 or C8080-8 for my collection. If you have one, I want it. I have been looking for one for months and have not been able to find one. If you have either of these chips in good condition (no desoldered parts wanted), I'm offering 400.00 for the C8080-8 and 500.00 for a C8080. If you need a replacement for the C8080 or C8080-8 you sell me, I'll

you a D8080A free as part of the deal. ----- Original Message ----- From: "Richard Erlacher" <edick(a)idcomm.com> To: <classiccmp(a)classiccmp.org> Sent: Sunday, September 30, 2001 1:21 PM Subject: Re: 8080 vs. 8080A > This makes no sense at all, though it may be because I'm

the way > in which you've put it. > > I have Intel boards that come in versions with the i8080 and also, > optionally,with the i8080A, and, aside from the clock frequency and

> access times, they're identical. The i8080A is essentially twice as

as the > standard i8080 and COULD be used more easily with low-power logic

its > demands aren't as stringent. > > The i8080A will, AFAIK, replace the i8080 in all applications without

compose > messages for this group, as some folks' mail readers can't interpret

> rich-text/HTML format. > > Dick > ++++++++++++++++++++++++++++++++++++++ > ----- Original Message ----- > From: John Galt > To: classiccmp(a)classiccmp.org > Sent: Sunday, September 30, 2001 10:17 AM > Subject: 8080 vs. 8080A > > > Can anyone here describe the technical differences between > an Intel 8080 and Intel 8080A CPU? > > The ONLY ref. I have been able to find seems to indicate that there

bug in > the 8080 and as a result it would only work with low power TTL? > > The problem was fixed in the 8080A and it would work with standard