Sonnet Technologies Crescendo_PCI Processor Upgrade Card - Manual (Page 175)

Problem: Computer does not boot with a G4
upgrade installed.
Possible Solutions:
The Crescendo software installer modifies open
firmware in the PRAM to fully support a G4. You
must run the Crescendo installer first or your
computer may not boot when you install the
Crescendo/PCI G4 card. In the future, you may
reset PRAM during a Restart from the Special menu,
but DO NOT reset PRAM during a cold start.
Resetting PRAM during a cold start will reset PRAM
including open firmware and your computer may
not boot thereafter. In the event that your computer
becomes unbootable due to the loss of its G4 open
firmware contents, booting from the Sonnet G4
PRAM Restore diskette will restore open firmware to
boot your G4.
Problem: Computer crashes at startup, bus errors at
startup, the monitor won’t sync, or an
application that didn’t crash before, starts
to crash.
Possible Solutions:
This may be caused by interleaved memory
(Figure 1). If you have more than 100 MB memory
installed (or possibly less) and it is interleaved (the
RAM is arranged in pairs, with matching pairs in
slots A1/B1, A2/B2, and so on), you should:
1) De-interleave the RAM by rearranging it so that
identical size DIMMs are installed in adjacent
slots, side by side (Figure 2).
En
13-3
Figure 1; Figura 1
Figure 2; Figura 2
PCI TriManual-Chapters 1-13 3/30/01 5:57 PM Page 157