Hello NeXT Community:
I( found these in a really very old post thought they may come in handy when trouble shooting boot error messages.
Best regards Rob Blessin
Error code 65 is a SCSI channel error, indicating that it can't load a
counter with a test pattern. Many SCSI errors can be tracked down to
termination problems. Check to make sure that the SCSI bus is
terminated internally. If the disk drive is providing termination,
make sure that termination resistors are attached properly on the old
Maxtor and Seagate drives, or jumpered to provide proper termination on
newer drives. If you are missing the internal drive, this could also
cause these symptoms!
(I used to have a URL for a site that carries all sorts of drive
hardware information. Anyone know of the site?)
The ROM Error Codes:
41-43 FPU errors
51-53 Serial Port A errors
54-57 Serial Port B errors
61-68 SCSI Channel errors
71-77 Ethernet Channel errors
81-86 Magneto-optical drive errors
91 Real time clock not ticking!
a1-a8 Two bit graphics controller errors
c2-c3 System timer problems
d1-d3 Event counter errors
e1-e2 Sound out DMA errors
The C1-C3 error codes are indeed related to timing.
I got the C3-error on booting a NeXTStation I recently acquired; googled the issue for literaly *hours*...
Turned out it was the Pyro card on the motherboard that made the computer think the timing was off in the POST.
The included Pyro manual re-iterated several times this was normal behavior.
In essence, the C3 *can* mean the computer is faster than expected.
Note to self: RTFM next time!