2.2 install on B/W G3 freezes at setup_arch:bootmem

[A R]

Dear Tim,

Thanks for the instructions on "logic board reset".
I followed these instructions, and left the computer
off for an hour.  When I put the battery back in,
the power on button didn't start anything.  But the
"power on" silver button on the motherboard started
the system up.

Still no boot from 2.2 install CD.  Same freeze
at setup_arch:bootmem.

I will now leave the battery out overnight as you
suggested.  However, the system seems to have been
reset fully by waiting an hour, so any additional
suggestions would be very much appreciated.

Thanks for all the help!
Andrew

--- "Timothy A. Seufert" <tas@mindspring.com> wrote:
> At 7:13 AM -0700 6/3/02, A R wrote:
> >Dear Tim,
> >
> >Thanks for the kind email.
> >I completed the CPU swap, and no change.
> >The problem stays with the motherboard.
> >
> >I have begun to suspect the "CUDA switch".
> >I have read that the CUDA switch resets the
> >real-time clock, and that bootmem will hang
> >if the real-time clock is messed up.
> >
> >I see two silver buttons near the "plus" labelof
> the
> >battery.  Pressing them didn't do anything
> >helpful.  They appear to be "power on" and "reset"
> >functionality only.
> >
> >Do you have info on how to reset the CUDA?
> >Other ideas?
> 
> One of those two is actually the CUDA reset switch,
> if I recall 
> correctly.  You may have to press and hold it for
> several seconds to 
> get it to reset the CUDA instead of power on / off /
> reset.
> 
> Another method to REALLY reset everything is to
> perform what Apple 
> calls a "logic board reset".  Their recommended
> procedure is at this 
> URL (it's for the G4 (PCI Graphics), but that
> machine uses the same 
> motherboard as the B&W):
> 
> http://docs.info.apple.com/article.html?artnum=95066
> 
> The steps they list:
> 
> 1. Unplug the computer.
> 2. Press the Power On button on the front of the
> unit.
> 3. Open the side access panel.
> 4. Remove the battery from the logic board.
> 5. Wait at least 10 minutes before replacing the
> battery.
> 6. Make sure the battery is installed in the correct
> +/- direction.
> 7. Reassemble the computer and test the unit.
> 
> In my experience the "at least 10 minutes" can
> sometimes mean 
> "overnight".  I was once messing with my B&W's Open
> Firmware 
> variables and managed to get it into a state where
> it instantly 
> crashed on powerup, and 10 minutes or even 2 hours
> of battery-out 
> weren't enough to erase the settings -- had to let
> it sit for 10 
> hours or so.
> 
> -- 
> Tim Seufert


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