8 Dec
2015
8 Dec
'15
3:37 p.m.
"So a 9-track open-reel SCSI drive should work just as well as a DDS, DLT,
SLT drive."
Oh wow. i had not even considered that. I have a pdp 11 with a beast of a 9
track tape drive in is's own rack, that would be interesting if i could get
a scsi tape drive for the vax and use some big tapes to move data between
the two.
On Tue, Dec 8, 2015 at 11:38 AM, Johnny Billquist <bqt at update.uu.se> wrote:
On 2015-12-08 17:02, Paul Koning wrote:
On 2015-12-07 20:36, Christian Gauger-Cosgrove wrote:
Unsubscribed from cctalk now, so I'm not sure if this will get through or
not.
The RSX installation tape should boot from all tape devices, no matter
what density. The disk boot blocks are somewhat more specific. MSCP sits
together with massbus and RK06/RK07. RK05, RL01/02, RP02/03 as well as P/OS
drivers are separate boot blocks. Of those, only the RL02 is actually
supported by M+. So in practice, you only see one of two disk boot blocks
around for M+. 11M use pretty much anything, I'd think.
Johnny
On 7 December 2015 at 14:29, Johnny Billquist
<bqt at update.uu.se> wrote:
One detail on "it doesn't care what the tape is": RSTS kits on 1/2 inch
tape come in 800 and 1600 bpi versions. They have different boot blocks,
each of them designed to work with all tape drives/controllers supported on
RSTS that support the density in question. For example, the 1600 bpi kit
doesn't boot on a TM11 controller, and the 800 bpi kit won't boot on a
TMSCP controller. This matters if you try to boot one in an emulator where
physical tape density doens't have any meaning.
I think all (modern PDP-11) OSes can install from
TMSCP tapes. RSTS/E is
more picky than some others, though, if I remember right...
Yes, RSTS/E installs from TMSCP just fine (as can RSX-11/M+); I know
that in simh
you can bring up Ultrix-11 3.1 only on TMSCP
(specifically a TK50), at least if you want all of the packages to
install. I've installed RSTS/E 10.1-L from MASSBUS, TS11, TM11, and
TMSCP in my various experimentation with emulation, it really doesn't
care what the tape is as long as your SYSGEN device is consistent.