KMS11-P Synchronous Communication Processor Technical Manual

This technical manual for the KMS11-P Synchronous Communication Processor provides detailed information on its installation, programming, and servicing, including diagnostic support.

The KMS11-P is an intelligent, microprocessor-based synchronous communications controller designed for high-performance network links between VAX-11 or PDP-11 computers. The basic unit (KMS1P-M) comprises an M8206 microprocessor (KMC11-B) and an M8203 line unit.

Key aspects covered in the manual include:

1. General Description: Outlines the KMS11-P's features, such as error reporting, modem control, diagnostic tests, support for full/half-duplex configurations, and 18-bit non-processor request (NPR) direct memory access (DMA) transfers. It operates across a speed range of 2.4 Kbits/s to 56 Kbits/s and supports various EIA (RS-232-C, RS-423-A, RS-422-A, RS-449) and CCITT (V.10, V.11, V.35) standards.
2. Installation: Details the four phases of installation: preinstallation checks (power, system/device positioning, UNIBUS loading), microprocessor (M8206) installation, line unit (M8203) installation, and overall system testing. This involves configuring switches and jumpers, physical insertion into backplane slots, and connecting various cables.
3. Programming: Explains the logical organization of its Control and Status Registers (CSRs) for the M8206 and M8203 modules, which facilitate information exchange between the CPU and the microprocessor, and between the microprocessor and the line unit.
4. Service & Maintenance: Describes the maintenance philosophy (fault isolation to Field Replaceable Units), maintenance functions via specific registers, and various maintenance modes (single-step, system test, external). It lists diagnostic programs for both PDP-11 (CZKMB, CZKMC, CZDMR, CZDMS, CZKMR) and VAX-11 systems (EVDHA, EVDHB, EVDMA, EVDIG) used for testing components, interfaces, and overall functionality, often utilizing test connectors and loopback modes.

Appendices provide additional technical details on device addresses, vector addresses, diagnostic supervisor summaries, driver interfaces, and cabinet kit descriptions, including various I/O panels and cables for different interface types.