Messages in this thread | | | Date | Wed, 7 May 1997 18:58:57 +0400 (MSD) | From | Nick Evgenev <> | Subject | Re: cyrix 6x86 and ne2000 driver problem |
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Hi!
On Tue, 6 May 1997, Mike Jagdis wrote:
> > But in fact something working wrong :). As I wrote exchange > > cyrix cpu on intel or isa ne2000 on amd pci has solved all my problems. > > In a few days I will be able to test pci ne2000. If it will working > > fine with cyrix, then the problem is isa delays. Are you agree? Should > > I test other isa cards like 3com? > > The Cyrix CPUs have a configurable delay between I/O instructions > which defaults to 32 *bus clock* cycles for the 6x86 (I think the > 5x86 is the same). This should be sufficient for normal cases but > it could be wrong if (a) the motherboard jumpers aren't set correctly > and a smart BIOS tries to adjust the delay, (b) the BIOS knows > about 6x86 I/O delays, allows you to configure it, and you get it > wrong, (c) you have applied the latest cyrix patch and enabled > the fast I/O option. > > In all these case there will *only* be a problem if the device > driver does not include dummy I/O instructions or delay loops > in *all* the necessary places.
I just played with set6x86... Disabling fast IO (i.e. 32/64 cycles) has no effect. :(
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