From: Ken Yap ken@syd.dit.csiro.au
Subject: b.com floppy driver patch for fast machines
Date: Mon, 4 Sep 1995 20:47:15 -0400 [thread overview]
Message-ID: <19950905004715.u0VglaAS8AexJD1D4Nppjm9uQq52OCpxUpRx_F9-40U@z> (raw)
|For what it's worth, the Crynwr packet drivers for DOS use an inb from
|the keyboard controller to establish a reasonably constant delay. I
|gather this is because the keyboard controller runs at something like 7
|MHz on virtually every motherboard. It runs at a higher clock rate on
|PS/2s, but apparently it's reliable on ISA, EISA, and ISA/PCI
|motherboards.
Well, it isn't actually anything to do with the keyboard controller,
just that that port is a "harmless" one to read and that most ISA buses
run at 8-12 MHz, regardless of CPU speed.
next reply other threads:[~1995-09-05 0:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
1995-09-05 0:47 Ken [this message]
-- strict thread matches above, loose matches on Subject: below --
1995-08-30 15:03 Stephen
1995-08-30 12:11 Pace
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