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- Newsgroups: comp.sys.sun.hardware
- Path: sparky!uunet!utcsri!utzoo!henry
- From: henry@zoo.toronto.edu (Henry Spencer)
- Subject: Re: Carrera serial port problems
- Message-ID: <BxGtMx.2qt@zoo.toronto.edu>
- Date: Mon, 9 Nov 1992 20:16:08 GMT
- References: <ASTELS.92Nov9102807@fsd.cpsc.ucalgary.ca>
- Organization: U of Toronto Zoology
- Lines: 16
-
- In article <ASTELS.92Nov9102807@fsd.cpsc.ucalgary.ca> astels@fsd.cpsc.ucalgary.ca (Dave Astels) writes:
- >everything else seems to work ok (self tests and boot). It would seem
- >to me that there is a chip failure in something common to both SCC
- >chips...
-
- Can't think what it would be. I haven't seen schematics, but as far as
- I know they don't even share a -ve power supply (since the kbd/mouse ports
- are TTL). Except, hm, maybe a clock oscillator.
-
- >There is a socketed chip (24 or 28 pin) marked ICM7170IPG that
- >I'm not familiar with. Any idea what it is?
-
- That's the battery-backed-clock chip.
- --
- MS-DOS is the OS/360 of the 1980s. | Henry Spencer @ U of Toronto Zoology
- -Hal W. Hardenbergh (1985)| henry@zoo.toronto.edu utzoo!henry
-