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Article #8459Re: NEC V20 How to USE?
From: R.D.Eager
Date: Wed, 22 Oct 1986 19:17
Date: Wed, 22 Oct 1986 19:17
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I have been reading the stories/theories/ideas about using an 8Mhz
machine with interest. I suspect (as noted) that the V20 has nothing to
do with the problems; I ran a V30 for months in an 8086 machine with no
problems at all (and that with a FORMAT from a manufacturer who would
have been unlikely to do anything clever).
I suspect that those machines that DO work either have different timing
loops in the BIOS, or they turn the speed down (on software switchable
machines) while accessing the floppy disks. Of course, there are also
the hardware problems like DMA overrun....
Incidentally, I have a so-called 'turbo' (software switchable) 4.77/8Mhz
machine. Last night I fitted an LED to show if it was in 'fast' or
`slow' mode (I had been having trouble with ill-behaved programs that
turned the speed down without my immediately noticing). Today I see that
whenever I access the floppies (yesterday I only used the hard disk) the
speed light flickers, and goes out if there is heavy floppy activity.
Thought some of you might be interested in this drivel. You could type
'n' if not, but it's a bit late now....
--
Bob Eager
rde@ukc.UUCP
rde@ukc
...!mcvax!ukc!rde
Phone: +44 227 66822 ext 7589
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!mcvax!ukc!rde From: rde@ukc.ac.uk (R.D.Eager) Newsgroups: net.micro.pc Subject: Re: NEC V20 How to USE? Message-ID: <1989@eagle.ukc.ac.uk> Date: Wed, 22-Oct-86 15:17:37 EDT Article-I.D.: eagle.1989 Posted: Wed Oct 22 15:17:37 1986 Date-Received: Thu, 23-Oct-86 22:54:33 EDT References: <1500065@iuvax> <6200047@inmet> <1091@kontron.UUCP> <208@csustan.UUCP> <1584@iuvax.UUCP> Reply-To: rde@ukc.ukc.ac.uk (R.D.Eager) Organization: U of Kent at Canterbury, Canterbury, UK Lines: 29