11/[9]4 latest
Rod Smallwood
rodsmallwood52 at btinternet.com
Tue Jun 7 06:50:01 CDT 2016
On 07/06/2016 12:12, Jerome H. Fine wrote:
> >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
Well I have moved on a bit more.
My 11/83 is back together and booting RT on the RD53 via the RQDX3
as normal.
I found not one but two RXV21 RX02 controllers. So I'll give them a
try in the 11/83 and see what happens.
I'll soon know if the RX02 is good or not. If not I'll fix it (my era - TTL)
Regards
Rod
More information about the cctech
mailing list