I've assembled some notes from old manuals and other sources
on the formats used for on-disk file systems through the
Seventh Edition:
http://www.cita.utoronto.ca/~norman/old-unix/old-fs.html
Additional notes, comments on style, and whatnot are welcome.
(It may be sensible to send anything in the last two categories
directly to me, rather than to the whole list.)
Hi,
I successfully made SIMH VAX-11/780 emulator run 32V, 3BSD and 4.0BSD.
Details are on my web site (thogh rather tarse):
http://zazie.tom-yam.or.jp/starunix/
Enjoy!
Naoki Hamada
nao(a)tom-yam.or.jp
I thought I remembered something interesting about 6th Edition RK05
handlers, and went back to check RK(IV) in the manual. There it is,
Raid 0.
"Drive numbers (minor devices) of eight and larger are treated
specially. Drive 8+x is the x+1 way interleaving of devices rk0 to
rkx. Thus blocks on rk10 are distributed alternately among rk0, rk1,
and rk2." Goes on to enumerate precautions, like don't use the same
physical drive for both normal and interleaved operation.
I myself never tried this, because I didn't have enough confidence in
the error-free operation of a single RK05 drive, let alone two or
more. Note that this feature disappeared by the time of 7th Edition
RK(4).
carl
--
carl lowenstein marine physical lab u.c. san diego
clowenstein(a)ucsd.edu
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