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- Newsgroups: comp.unix.sysv386
- Path: sparky!uunet!rde!gator!larry
- From: larry@gator.rn.com (Larry Snyder)
- Subject: Re: SCO: loosing characters on serial port
- Message-ID: <Bt4IBM.GJy@gator.rn.com>
- Organization: The Gator Public Access Unix Site - 219-289-3745
- References: <JOCHEN.92Aug16104646@busybit.mrz.sub.org>
- Date: Mon, 17 Aug 1992 10:26:09 GMT
- Lines: 25
-
- jochen@busybit.mrz.sub.org (Jochen Fahrner) writes:
-
- >With cpu intensive programs running in the background, flowcontrol
- >works fine: screen scrolls, then stops, then scrolls without loosing
- >any character. But when copying 1Mb files in the background, it looses
- >many characters !
-
- >Has anyone a dumb serial card in conjunction with adaptec 1542B at
- >9600bps without character losses ?
- >Is it possible to get it working with an adaptec or is it not possible ?
-
- Yes -- we have a 486/50 running SCO 3.2.2 and have a dumb serial port
- locked at 19200 (it's not a 16550AFN) and we get a steady 1260-1320 cps
- on outbound traffic, and 800 cps on inbound. The other serial ports
- (there are 4 dumb 8250 type ports on this box) get around 800 cps (they
- are locked at 9600 baud). This machine is very busy running a very large
- database server with lots of activity and is the X-server for 6-10 clients.
-
- >Probably you should not use bus master dma cards in ISA-bus systems !!!????
-
- this box uses a 1542B on a ISA machine
-
- --
- Larry Snyder
- larry@gator.rn.com
-