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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


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
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