At 15:07 -0500 07/15/2002, R.A. Cantrell wrote:

>I may have mis-identified my Supermac. It does have  the 604e/200 processor.
>It has the hemi-cylindrical scalloping  on the  front of  the case, but on
>the lower half only. It  has  what appears to  be  dual processor slots (the
>lower one lines up with one of  the  PCI slots and has  an odd bit in
>between) In System profiler it said I had 80 mgs of  ram 32 in the B4 16 in
>the A3 8 in the B1 8 in the A1 and 16 in a space not labeled I put a dimm
>into the slot marked A2. the Machine said I had put it in B3, which is
>clearely still empty. Whazzup? Sytem Profiler says it has a 512 kb external
>L2 cache I don't see any cahce, is it on the cpu card? (whew)


Apple System profiler must figure out what machine it is working on 
based on the things ASP can see.   The 9500 has twelve RAM slots 
(A1-A6, B1-B6) but the 8500/7500 has only eight, like the S900.

It is difficult for ASP to figure out what machine it is in because 
the 7500/8500/9500 and S900 all use exactly the same ROM chips, so it 
isn't like it can just read a machine name out of the ROMs on the 
motherboard.   Now it can generally tell whether it's in a 9500 or a 
7500/8500 either because the 9500 has 2 Bandit chips to the 7/8500's 
one, or because the 7/8500 have onboard video and the 9500 does not. 
However, the S900 has only 1 Bandit chip, but no onboard video, so 
ASP gets somewhat confused and sometimes thinks that the S900 is a 
9500 and other times thinks it is an 8500.

Furthermore, ASP reports the labels you would find on an Apple 
machine and Umax may not have labeled the slots in the same order as 
Apple.   Finally, the S900 has 16 MB of RAM soldered to the 
motherboard.  If ASP thinks the S900 is a 7/8500 then it gets really 
confused because it's expectly eight RAM slots, but there are eight 
plus this soldered on RAM.   If ASP thinks the S900 is a 9500 it 
usually assigns the 16 MB motherboard RAM to one of the extra four 
slots that the 9500 has.

So the short answer to your question is that ASP is confused because 
it's trying to do RAM assignments as if the S900 were an Apple 
machine.

The 512KB L2 cache is soldered to the motherboard.  Its the four 
square chips in the front/middle of the board opposite the PCI slots. 
It's soldered down.  You can disable it either with software (if you 
use a G3/G4 card) or by soldering a jumper in at J38.  But you won't 
want to do that as long as you are using  a 604(e) processor.

Jeff Walther

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