Digital PDFs

Welcome to DECPDF, the searchable and organised repository of Digital Equipment Corporation (DEC) documentation, gathering together documents and manuals from around the internet and from users' personal archives.

We have strived to arrange the content of this site in a logical order so that it finally becomes easy to locate the documentation for your device or system that you need - be it a PDP-11 computer, or an obscure feature of VMS. It should all be there at your fingertips.

Do you have a document that we don't? Are we missing some vital information that you could provide us with? Then register for an account and request upload permissions, and you can help us to build the ultimate repository of DEC documentation.

FAQ

Why do some documents have "Original" and "OCR" versions?

When a new document is uploaded it is tested to see if it has had OCR run on it already. If it has, we use that OCR data for our indexing. If it hasn't, we automatically run OCR on the document. This creates a new version of the document, the OCR version. We keep the original alongside the new OCR version and give you the choice of which version to download.

I have a different copy of a document you already have. Can I upload it?

Absolutely. Document revisions with the same main document ID code will be grouped together within the document on the website. We actively seek out other versions of documents, or even other scans of existing revisions of documents, to try and make the archive as complete as possible.

What's the Order Number and Revision when I upload?

The order number is DEC's internal document reference ID. It is typically of the format XX-YYYYY-ZZ-RRR, for example EK-3K370-TR-001. The first three sections are the document ID and the last section is the document revision. When you upload please split the document ID from the revision and enter them into the two separate boxes. That way the different revisions of the same document are properly grouped together. Note that not all documents (especially field maintenance print sets) use this format of document IDs, and not all documents even have an ID. In this case, just enter what you can in the document ID and leave the revision either empty or set to 000 (which indicates it's the original unrevised version). If there is no document ID then leave the Order Number blank. A new document ID will be generated as a placeholder for internal use.

Will you ever host binary files like disk images and software?

No. That opens up a whole other kettle of worms, alongside a can of fish as well.