LP20 Line Printer System Manual

The LP20 Line Printer System Manual serves as a complete reference for the LP20 Controller and its associated line printers (LP05, LP07, LP10, and LP14).

Key sections include: * Installation: Detailed procedures for unpacking, module configuration (including base/vector addresses), and system checkout. * Operation: Explains that operational controls are located on the printers themselves, with diagnostic procedures for controller-level issues. * Programming: Describes the operational modes (RAM load, DAVFU load, print, and test), register allocations, and includes sample code. * Technical Description: Offers a deep dive into the controller's logic, including DMA operations, interrupt handling, and signal timing. * Printer Descriptions: Provides specifications, interface signals, and space requirements for supported printer models.

The manual also contains useful appendices for character sets and printer code charts.