[HECnet] SIMH TOPS-20 question --> recipe for handling Tops20 install tapes --> MTBOOT --> create new PS: structure

[Thomas DeBellis]

I downloaded both images, but am only looking at BB-H240B-BM at the moment.

This appears to be a KL distribution as it has a rather sizeable 
directory for building an MCB imagine for a DN20.  A DN20 requires a 
DTE, which the KS does not have.  You'd need something to DMA Unibus to 
Unibus and I'm not sure whether that was ever a thing. Sounds like a 
great idea, if you ask me.

However, I don't think any of it will be useful.  Also, I can't quite 
tell; it may be Phase III.  At least a document says as much.  Have a 
look at VENTI2::H240B.LST, which is a listing of the DUMPER save sets 
and VENTI2::DECNET.DOC, which is the initial documentation for the release.

How would you like to proceed?  Skip this and look at the second tape, 
which appears to be a 2020 based distribution?

On 12/28/21 7:34 PM, Paul Koning wrote:
>
>
>> On Dec 28, 2021, at 5:11 PM, Thomas DeBellis 
>> <tommytimesharing at gmail.com> wrote:
>>
>> dir mta0: would only work for either a Tops-20 or ANSI labeled tape 
>> with volume recognition on.  You're not doing that by assigning the 
>> tape drive directly.
>>
>> But they're probably not labeled; I don't recall that DEC shipped 
>> this way.
>>
>> If you let me know what tapes you're looking at, I can have a look 
>> and give you some pointers or tips.
>
> BB-H240B-BM.tap.gz 
> <http://www.bitsavers.org/bits/DEC/pdp10/magtape/dec_distribs/TOPS-20/BB-H240B-BM.tap.gz> is 
> one, BB-H241B-BM.tap.gz 
> <http://www.bitsavers.org/bits/DEC/pdp10/magtape/dec_distribs/TOPS-20/BB-H241B-BM.tap.gz> the 
> other.  I'm not sure which is right.  The description file 
> (labels_combined.txt 
> <http://www.bitsavers.org/bits/DEC/pdp10/magtape/dec_distribs/labels_combined.txt>) 
> has them listed as:
>
> BB-H240B-BM         DECNET-20 V2 DIST TAPE  1980     _tops-20
> BB-H241B-BM         DECNET-20 2020 V2 DISTRIBUTION  1980     _tops-20
>
> paul
>
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