Thoughts on restricted distribution documents (Dec Professional 350)

Chris Zach cz at
Tue Sep 29 16:39:15 CDT 2020

That's neat! Thanks! I always liked the Pro/350: When you get into the 
OS command prompt it's a really nice system and Synergy wasn't a bad 
windowing system either. I used it a lot in the day and it worked pretty 
well with a mouse.

Also venix wasn't bad, for awhile my Venix equipped 350 was on the 
internet via uucico. Those were the days...


On 9/29/2020 5:34 PM, Bjoren Davis via cctalk wrote:
> If it helps, I bought a copy of the DEC Professional 350 Field 
> Maintenance Print Set (MP-01394) on eBay a few months back.
> I've scanned it but I've been waffling about where to post it. Scanned 
> @600DPI with lossless compression it's huge: 1 GB.  Saved as an 
> "optimized" PDF (with very little visible difference) it's 94 MB.
> In the short term I've temporarily thrown up the optimized copy onto 
> Google drive: 
> I'd love to be able to contribute this to something like bitsavers.
> Thanks.
> --Bjoren Davis
> On 9/29/2020 4:48 PM, Paul Koning via cctalk wrote:
>>> On Sep 29, 2020, at 4:29 PM, Chris Zach via cctalk 
>>> <cctalk at> wrote:
>>> Makes sense. Still it's uncompressed so pretty big. I'll need to work 
>>> on cleaning up the scans a bit, then I'll put the Tiffs up for 
>>> download/whatever. Just don't want a lot of copies, consider that pdf 
>>> as a proof of concept to review.
>> TIFF supports compression, in a number of different schemes.  LZW 
>> tends to work well for gray and RGB; the CCITT schemes are for bitonal 
>> (black/white bitmap).  All TIFF compressions are lossless so they are 
>> all safe for material of all types.
>> Is what you posted the whole document you have, or are there others?  
>> I was really hoping for the "CT bus manual".  I did see interesting 
>> stuff in this one, though; for example, the first documentation I've 
>> seen of the hard drive FORMAT command.
>>     paul

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