>Rod Smallwood wrote:
>On 06/06/2016 10:36, Jerome H. Fine wrote:
>Rod Smallwood wrote:
>On 06/06/2016 03:51, Jerome H. Fine wrote:
>Rod Smallwood wrote:
I have a box full of 8" floppies. BTW how many 8" floppies do you
think there were in an RT11 distribution?
I can't remember for sure, but I think there were eight SSDD (RX02)
floppies
plus an Auto-Install floppy. That would have been for V05.06 of
RT-11 which
requires over 6,800 blocks for an RL02 disk pack. Since some of
the files
get duplicated, eight seems about right.
I doubt that V05.07 of RT-11 from Mentec was ever supported on RX02
floppies. The size of the binary distribution for V05.07 of RT-11
is over
16,600 blocks on an RL02 disk pack of which over 9,000 blocks are
DSK files (one of which is 7,000 blocks) which Mentec added to the
V05.07 RT-11 distribution.
Using RX01 floppies will take many more since there are only half
the blocks
or 494 blocks on a SSSD (RX01) floppy.
Do you have any other questions? I don't know of any RT-11
distributions
on RX02 image files for either V05.06 or V05.07 of RT-11. There may
be some for earlier versions.
The first one out of the box read 1/87 and its not the date.
Can you provide a DIR of the first few floppies? The names and
sizes of the files will pin down which version of RT-11 if the
actual dates were not correct. Otherwise, the dates of the files,
if they are correct, will specify the version of RT-11 if the dates
are 1983 (or after) when V05.00 of RT-11 was released. Before
1983, there were many updates, so there is more confusion.
Internally, each SAV file has a version and each MAC file also
has a version number which will also help identify the file aside
from a BINCOM to compare two files.
It a little difficult to do a dir when I have yet to get the drive I
would do it on working
So I'm just inventorying this box of 8" floppies.
There are a number (14) of clear packages with DEC original sets in
They are marked
RT-11 , RT11 V4.5B or RT11 V4.5C
Plus loose disks with RT11 utilities
and OS/8 disks
I do have a pair of RX01's but I am less sure about the controller.
Also available is a TK50 UNIBUS CONTROLLER not a TUK50 CONTROLLER as
sometimes described.
The only two relevant dates that I am confident of are for the RT-11
binary distributions of:
RT-11 V04.00 February 28th, 1980 152 files 3213 blocks
RT-11 V05.00 March 12th, 1983 182 files 4026 blocks
I assume that you may have distributions for V04.05B of RT-11 and
V04.05C of RT-11. I seem to remember that between 1980 and 1982,
DEC provided update files to users who were paying for the update
service and that the users may have been responsible for applying the
updates to their distributions in order to keep their RT-11 distributions
up-to-date.
If you have any additional information, please let us know and we can
attempt to figure things out.
Jerome Fine
