[SunRescue] Sun4 VME Parts / Memory

[Kevin Loch]

Dave Reader wrote:
> 
> 
> cool. finally got the 4/330's original cpu to behave. trick seems to be
> to turn it off, then turn it on very soon after. I guess this means a dead
> nvram battery and thats' not long enough for it to "forget" the defaults
> it gets told the first time around?
> 
The NVRAM battery is likely the problem.  In diag mode it will error on
the
"nvram write test" if that is the case.

> this one has 4.1.1 - but doesn't respond to "help", so i guess this was
> one of the roms they ran out of space in?
> 
> the other 4/300 cpu has 3.0.1 (i think) and does respond to "help" - but
> 96megs takes /ages/ to test in diag mode.
> 

There is a way to set the memory test to an arbitrary value.  On later
roms "setenv selftest-#megs 0" at the ok prompt should do it. In old ">"
mode, setting 0x15 to 0 might work.

KL