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- From: smckinty@sunicnc.France.Sun.COM (Steve McKinty - Sun ICNC)
- Newsgroups: sci.electronics,comp.sys.sun.hardware
- Subject: Re: Sparcstation serial port
- Date: 10 Sep 1992 08:37:54 GMT
- Organization: Sun Microsystems Federal, Milpitas, CA.
- Lines: 22
- Sender: smckinty@France.Sun.COM (Steve McKinty - Sun ICNC)
- Distribution: usa
- Message-ID: <18n1h2INNa88@grapevine.EBay.Sun.COM>
- References: <1992Sep9.203550.25943@athena.cs.uga.edu>
- NNTP-Posting-Host: hardy.france.sun.com
-
- In article <1992Sep9.203550.25943@athena.cs.uga.edu>, mcovingt@athena.cs.uga.edu (Michael A. Covington) writes:
- > Can anyone tell me anything about the internal circuitry of the serial
- > port in a Sparcstation?
-
- It uses a Zilog 8530 chip, which can provide both asynchronous and
- synchronous comms.
-
- >
- > Also, am I right in thinking Sparcstation serial ports output + and - 5 V
- > rather than the usual 9 to 12 volts on an RS-232 port?
- >
-
- That depends. RS-423 uses +/- 5v and RS-232 uses +/- 15v, although most
- RS-232 implementations seem to use +/- 12v because they're already available
- on the board.
-
- Various models of Sparcstation can be adjusted between RS-423 and RS-232
- (using 12v). I don't know exactly how the adjustment is made, you'd need
- to ask your local field service office.
-
- Steve
-
-