decsystem10 KL10-BASED PHYSICAL DESCRIPTION

This document provides a comprehensive physical description of the Digital Equipment Corporation's 1080/1090 computer system. It is divided into two main sections: System Components and the KL10-A/B Arithmetic Processor.

The "System Components" section details individual hardware units that can constitute a 1080/1090 system. This includes descriptions, physical dimensions, and photographs of various devices such as hardcopy controls (BA10), card punches (CP10-D) and readers (CR10 series), synchronous (DC75-NP, DN87) and asynchronous (DC76, DN87S) communication systems, data channels (DF10/DF10C, DX10), interface channels (DL10), terminals (LA36, VT50, VT52), line printers (LP10, LP100), core memory units (MF10, MG10, MH10), memory data multiplexors (MX10-C), Massbus controllers (RH10), disk drives (RHS04, RP04, RP06), DECtape controls (TD10-C), magnetic tape transports (TU16B, TU70/71, TU72), magnetic tape controllers (TX01, TX02), and an incremental plotter (XY10-A). A summary table of physical characteristics is also provided.

The "Component Interconnection" section outlines how these various components are connected, covering aspects like system configurations, different types of connectors (CJ, MB, QL), ground mesh, and detailed cabling specifications for IBus, KBus (Memory Bus), Channel Bus, Device Cables, Massbus, and DECtape Transport Bus.

The "KL10-A/B Arithmetic Processor Components" section focuses specifically on the KL10-A/B central processor. It describes its three main cabinets (I/O, CPU, and Console Processor), detailing their internal logic bays, power supplies, and component utilization. The KL10-A/B processor is highlighted for its advanced features, including floating-point and string handling instructions, memory protection, page mapping, memory cache, and an integrated console processor for operator and service interface. The document includes numerous illustrations and figures to complement the textual descriptions.