🚀 go-pugleaf

Mick Costa wrote:
> Gary lake wrote:
> > I have a K5PR133 on the SIS-5571 based GA-586S MB. This MB supports a
> > bus speed of 75Mhz (and possibly 83Mhz).
> >
> > The manual is a bit confusing on what is required for this speed so I
> > tried the speed settings for a Cyrix 200+ but the system locks up just
> > after a startup msg of AMD K5PR133 at 110Mhz.
Read what's silkscreened on the board.  The jumper blocks over by the
SIMMs seem to control a PCI bus multiplier/divisor (one setting for 50
MHz, another setting for 75, and a middle setting for the rest of the
speeds), while the jumper blocks in the general vicinity of the CPU seem
to control the CPU bus speed.  As I recall, the K5-100's ignore the
clock multiplier pins; I'm not sure if the K5-PR133's do as well.

> > Also I thought the K5 family had a fixed multiplier but for normal setup
> > ie 66Mhz bus, the setting in the MB manual is for x2 ??
AMD's always said use the "Pentum-133" settings; apparently the chips
don't care.

> > Has anyone sucessfully run this MB/CPU combination at 75Mhz.??
I can run it with minimal wait states at 66 MHz, but at 75 MHz linux
won't load, even with an extra wait state added to all options and the
hard drive (Fujitsu M1638 EIDE) dumbed down to PIO 3.  Either I get a
CRC error, or lilo crashes.  I figure if I need to add more than one
wait state, I can't possibly get any performance improvement, but the
EIDE subsystem could be faulty somewhere.

> The jumper I cannot figure out is JP11 which is set to 1-2 for
> everything except the P200+.  Did you set it to 2-3 or leave it at 1-2
> for the K5PR133?  I find it strange that it get's left at 1-2 for 50,
> 55, 60, and 66 Mhz bus speeds and only changes for the P200+ (75 Mhz but
> speed).  That made me think that it has more to do with the P200+ than
> the bus speed or the fact that it is a Cyrix.
I don't remember the jumpers by number, but the ones off by the SIMM
sockets were changed in such a way as to seem to be a PCI speed control;
the others were all over by the CPU.  From my other motherboard
experiences, usually one "lone" jumper that was set to 1-2 is set to 2-3
to manage the highest speed or two the board can be clocked at.

> Anyone know the facts?
Not I; certainly it would've been nice if gigabyte had included jumper
settings organized by what each jumper does as well as by CPU.  Also
nice would've been BIOS setup entries to disable stuff like the PS/2
mouse port and the giving of an IRQ to my video card...the plug 'n pray
stuff is really heavy on the pray...

	Keith