2 May
2008
2 May
'08
2:58 a.m.
On Thu, May 01, 2008 at 08:33:35PM -0400, Brad Parker wrote:
The hardware bootstrap process is in the man pages -
it looks somewhat
rational. I have not studied it but I think the fun part will be making
a dectape image which has the binaries to be populated.
I was hoping to have a populated filesystem to start with, because we
should be able to run V1 bin/check using Apout, to check the filesystem.
Having said all that, having a working mkfs would be
would be very handy
and would make setting up a boot disk much easier!
The V1 manual for filesystem(5) say "Blocks 0 and 1 are collectively known
as the super-block for the device". Can you confirm that block 0 is part
of the super-block, i.e. it's not reserved for bootstrap code? If block 0
is the super-block, it should contain a word (# of bytes in free-map) followed
by lots of 0177 bytes, which are the free-map.
On another note, I thought of taking V6 mkfs.c as a start-point to rewrite
V1 mkfs. I'm trying to work out what f_m and f_n do:
if(fsys[n] == 'r') {
if(f == 'k') {
f_n = 24; /* RK, why these numbers? */
f_m = 3;
}
if(f == 'p') {
f_n = 10; /* RP, why these numbers? */
f_m = 4;
}
}
Finally, are we going to use RK03 or RK05, as the sizes are different?
Thanks all,
Warren