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- Path: sparky!uunet!destroyer!cs.ubc.ca!yukongold.cs.ubc.ca!not-for-mail
- From: phillips@cs.ubc.ca (George Phillips)
- Newsgroups: comp.sys.tandy
- Subject: Re: CPU's used in early Tandy's
- Date: 28 Jan 1993 03:09:50 -0800
- Organization: Computer Science, University of B.C., Vancouver, B.C., Canada
- Lines: 13
- Message-ID: <1k8etuINN5e0@yukongold.cs.ubc.ca>
- References: <C1Howz.nK@acsu.buffalo.edu> <1993Jan27.212733.22256@crd.ge.com>
- NNTP-Posting-Host: yukongold.cs.ubc.ca
-
- In article <1993Jan27.212733.22256@crd.ge.com> bownes@peterpan.crd.ge.com (Keptin Komrade Dr. Bobwrench III) writes:
- >From article <C1Howz.nK@acsu.buffalo.edu>, by kist@acsu.buffalo.edu (james e kist):
- >> The TRS-80 I used the Z80 at ~1 Mhz, TRS-80 III used the Z80, but the 2.77
- >> Mhz model, and the TRS-80 Model IV use the 4 Mhz Z80A.
- >
- >The model III was not exactly 2Mhz because of the video if I recall correctly.
-
- Son of more than you Ever wanted to know about Model I/III's
-
- According to the Model I technical manual, the Z-80 was clocked at
- "a little over 1.774 MHz". The Model III service manual says its
- Z-80 was clocked at 2.02752 MHz. Indeed, it got this by "dividing
- the basic video clock (10.1376 MHz) by five."
-