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Article #1909Re: SUMMARY: cpu usage of unused but enabled serial port
From: andrew
Date: Thu, 19 Nov 1992 17:16
Date: Thu, 19 Nov 1992 17:16
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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
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Newsgroups: comp.sys.next.sysadmin Path: arc1-ca.pugleaf.net!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