[jwhat]

Hi Weblacky,

yes we saw the structure and I got as far as to find potential POD / CAC command that could write back to memory:

Also as per boot diags: copying PROM code to memory ............... Copy PROM (0x9000000018000000) to RAM (0x9600000001a00000), len 0x168648

You can read PROM via POD/CAC directly using address: 0x9000000018000000
So it maybe possible that you can also write directly to these memory locations using the corresponding store commands:

>> A 000 001c01: Store byte: sb ADDR [VAL [COUNT]]
>> A 000 001c01: Store half-word: sh ADDR [VAL [COUNT]]
>> A 000 001c01: Store word: sw ADDR [VAL [COUNT]]
>> A 000 001c01: Store double-word: sd ADDR [VAL [COUNT]]
>> A 000 001c01: Store and verify: sdv ADDR VAL

Interestingly looking at your log:

>> Copying PROM code to memory ............... DONE

So it looks like your machines does get past the point of "copying PROM code to memory ...", so maybe your could halt the boot process at that point...

If there was a speed problem, would it even report copying PROM code to memory ??


Cheers from Oz,

jwhat/John