last night I finally found time to try Paul's 2.0.7 kernel on my DS5000/200
(haven't tried the 5000/120 yet).
It comes as far as
Initialising time ...
(init/main.c l. 773)
By looking through the startup code I came across some things that
I didn't understand ... I'm still waiting for my copy of Kane's
"MIPS RISC architecture" book
(our library has it, but it's currently loaned to s.o. else :().
I think most of my questions will be answered when I get better knowledge
of the MIPS instruction set ...
But, one question remains ...
- Am I correct in assuming that the boot monitor already sets up a
virtual->physical address mapping ? In dec_entry.S a commenct reads
* Now we need to move exception vector handler routines that appear
* in head.S down to the right addresses, 'cos the DECStation loads
* kernels at 0x80030000... <sigh>
Afaik, the physical address space goes from 0x0 to 512 MBytes, so the
0x80030000 should be a virtual address. Or did I get sth. wrong there ?
Michael Engel (firstname.lastname@example.org)