[SunRescue] Silly Question.

[James Lockwood]

On Wed, 19 Jan 2000, tom wrote:

> Aha! Now that is *very* handy to know. Time to start playing with clock 
> speeds, I think :-)

Here's a table in case anyone is curious (thanks to Fredrik Lundholm):

JP4
Clock multiplier (1 means short, 0 off)

1-2 3-4 5-6     mul
 0   0   0      3.5
 0   0   1      5.5
 0   1   0      3
 0   1   1      5
 1   0   0      6
 1   0   1      4
 1   1   0      2.5
 1   1   1      4.5

JK3 JK2 JK1     clock (MHz)
1-2 1-2 1-2     66
1-2 1-2 2-3     60
1-2 2-3 1-2     75
1-2 2-3 2-3     53
2-3 1-2 1-2     66
2-3 1-2 2-3     60
2-3 2-3 1-2     75
2-3 2-3 2-3     83

Note: These values are derived and maybe inaccurate, however
they seem to be correct on my SunPCi card. Note: The BIOS as of 0.51
seems to report any speed above 400MHz as 400MHz.

The multiplier jumpers are identical to the table in the K6-2
documentation if you assume that each jumper pulls the given line low.

I've not tried a K6-3 but suspect it wouldn't work.  If anyone has one
floating around it might make a very interesting experiment, if it worked
out it would turn the SunPCi into a speed demon.

> Still, can't complain. For a sysadmin to have a Creator 3D in his desktop 
> machine isn't so bad, and it does make a speed difference to CDE. Plus 24-bit 
> colour at some obscene resolutions (even if my Indy does that as well :-)

Agreed, the Creator3D is a lot faster in 2D operations as well.  xmame
goes from fully playable at scale 4 to barely playable at scale 2 when
downgrading to a PGX.

> Slightly off topic, but has anyone tried Quake 2 on an Indigo2 Max or High 
> Impact? How much of a difference does the hardware texture mapping make?

Goes from vaguely playable to extremely intense.  An Onyx2 IR is mind
blowing.  :)

-James