On 2016-01-06 23:36, Christian Gauger-Cosgrove wrote:
You take one day trip to the US and suddenly "Reply Explosion"...
That's life. :-)
Inlined replies/comments to several previous messages in this thread follow:
On 6 January 2016 at 10:51, Paul Koning <[email protected]> wrote:
I'm not sure what a DOS device is.
The E-11 simulator has a special device which allows you to read from
a normal PC file folder, it's the DOS device. I know there's an RT-11
to use it, and the resident RSX-11 expert (Johnny) can say if there's
also a driver for it. I don't think there is a RSTS/E driver; though
as an aside: How difficult would it be to add in a custom device to
RSTS/E? If one wanted to implement said "DOS device" in RSTS would it
be possible?
As for RSX:
.dev do:
DO0: Loaded Type=UNIX
.dir do:
Directory DO0:
7-JAN-16 00:05
cons1.log ;0 0.
e11 ;0 0.
cons2.log ;0 0.
restart ;0 0.
re11~ ;0 0.
cons0.log ;0 0.
cons3.log ;0 0.
e11-4.0b.tar ;0 0.
e11-5.0.tar.gz ;0 0.
e11.ini ;0 0.
d ;0 0.
re11 ;0 0.
e11.ini~ ;0 0.
mim.txt ;0 0.
full.tar.gz ;0 0.
Total of 0./0. blocks in 15. files
.
(Unfortunately, the DOS device do not return any information like file
size or dates, but I can at least do a directory, and copy files in and
out...)
I wrote the DO: device to look like a magtape from RSX point of view, so
it also supports "funny" filenames.
I don't know anything about writing your own device drivers under RSTS/E
though, so I can't even comment on it. That said, I'm sure Paul do. :-)
Also, someone else wrote a user level file access program for the DOS
device, which might be another option for accessing files without
writing a device driver. Not sure if that could be adopted for RSTS/E if
it don't already exist.
3. Magtape. DOS format labels are very simple; ANSI isn't much harder. For
extra credit, someone could write an implementation of VMS BACKUP -- RSTS can
read those tapes (with some restrictions) in V9.0 or later.
May I inquire how to read VMS BACKUP format? Also, by any chance can
RSTS read RSX style BRU format (...isn't RSX-11 BRU format actually
the predecessor/a subset of VMS BACKUP)?
How to read VMS BACKUP format? Under RSTS/E? How about using BACKUP?
As for RSTS/E reading BRU format tapes... Probably not that hard. I know
there is a BRUREAD program from DECUS, which should be pretty easy to
adopt, if nothing else.
But no, BRU and VMS BACKUP are not related. At all. However, as Paul
said, RSTS/E BACKUP is subset compatible with VMS BACKUP.
4. Disk. Years ago I wrote a program "rstsflx" that can read and write RSTS
disk images. It should still be around; if not I should build some new kits and supply
them to whoever can offer a place for them.
You can also use AUXLIB$:FIT within RSTS to read and write RT-11
format media. So you could make an RT-11 formatted disk with John
Wilson's PUTR utility and move files to and from it (with a DOS
emulator like DOSbox because PUTR doesn't play nice on x64 Windows);
it'll work on WXP though. You can also make said RT-11 formatted media
with SIMH running RT-11 as well.
Yeah, that was what I was thinking of. You can also read RT-11 formatted
disks under RSX, using FLX.
So, RT-11 formatted disks are sortof a lingua franca when it comes to
transporting files between PDP-11 systems (or even VAX) on disks...
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: [email protected] || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
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