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- Newsgroups: comp.sys.next.sysadmin
- Path: sparky!uunet!psinntp!cubetech.com!imladris!andrew
- From: andrew@cubetech.com
- Subject: Re: SUMMARY: cpu usage of unused but enabled serial port
- Message-ID: <1992Nov19.171628.24463@cubetech.com>
- Organization: Cube Technologies, Inc.
- References: <1992Nov17.142613.27644@news.th-darmstadt.de> <1992Nov18.110002.17869@pilhuhn.ka.sub.org>
- Date: Thu, 19 Nov 1992 17:16:28 GMT
- Lines: 11
-
- In article <1992Nov18.110002.17869@pilhuhn.ka.sub.org> hwr@pilhuhn.ka.sub.org (Heiko W.Rupp) writes:
- >It is not a problem! That's the way a device driver works. If NeXT had
- >used serial chips with 16 byte fifo for each serial port (and enabled
- >this 16 bytes fifo), interrupt load would have decreased.
-
- NeXT uses one of the Zilog serial controllers, which is a good serial
- controller, but I think it's a combination of the device-driver and
- the apparent lack of DMA (or use of it) in moving bits around.
-
-
- andrew
-