How to transfer data FAST?
a.carlini at ntlworld.com
Wed Jun 22 14:55:32 CDT 2005
>No, RSTS is RDS-1; it's a file structure all its own, totally
>unrelated to any other PDP-11 OS. (It's a distant relative of the
>TSS-8 file system, though.)
The trick with interleaving ODS-2 and ISO9660 is to use the first
64 blocks or so that ISO9660 leaves undefined as the "in" for ODS-2.
Then you get N blocks of ISO9660 data and meta-data. The ISO9660
blocks get collected into BADBLK.SYS in ODS-2.
So the two filesystems side-step each other. If you want to share
data (which I did when I was building CDs with PDFs and index HTMLs)
then that is possible, but slightly harder.
As long as RDS-1 does not absolutely need block 64 and some way
onwards, then it may be possible to logically interleave it and
I've often wondered whether it would be possible to build a
disk that could boot VAX, Alpha (OpenVMS) and PDP-11 (RSX-11).
It would be an interesting exercise to try sometime, and
probably a lot easier to test now that we have SIMH!
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