On Sun, 26 Jan 1997, Rick Copeland wrote:

> Boot sd(0,0,1)
> 
> Exception 0x2C at 0x00004000.

The CPU is unhappy with the first instruction in the kernel code.  More
specifically it is trying to execute a special co-processor instruction
for a co-processor you do not have.  The last time I checked however, the
first instruction of the kernel is:

mov #2700,sr

which disables all interrupts - it is not a special co-processor
instruction. So it's more likely that something is corrupted in the tape.
Did you leave out any lines between the 'Boot sd()' and the exception?
Those are important to diagnosing the problem.

-J