Editing PDP-11/20 Documentation (section)

== PDP-11/20 System Manual (DEC-11-HR1B-D) ==
DEC's overview of the basic 11/20 system, sixth printing May 1973 (first printing August 1970), 27 pages scanned without a text layer.<ref name="sm" />

Contents: 1 introduction, applicable documents (Table 1-1) and the master drawing list (Table 1-2); 2 system description, with the basic system and its variations (Tables 2-1 and 2-2) and specifications of the KA11 processor, KY11-A console, MM11-E core memory, KL11 Teletype control, H720 power supply (Table 2-7) and Unibus (Table 2-8); 3 system operation, console controls and indicators and their interactions; 4 operating procedures: manual and automatic loading, the bootstrap loader, running programs and Teletype operation.<ref name="sm" />

It has no circuit descriptions or adjustment procedures; those are in the component manuals.

<pdf width="800" height="500">File:PDP-11-20 System Manual (DEC-11-HR1B-D).pdf</pdf>

Download: [[:File:PDP-11-20 System Manual (DEC-11-HR1B-D).pdf|PDP-11-20 System Manual (DEC-11-HR1B-D).pdf]]