This document set comprises four handbooks providing detailed information on the XMI bus and various XMI adapters used in VAX systems. It is intended for trained Digital customer service personnel.
The four handbooks are:
- XMI Bus Overview Handbook: This handbook introduces the XMI bus as a high-speed, synchronous, pendable bus with centralized arbitration. It describes the bus's physical characteristics, including card cage, backplane, node ID numbers, clock/arbiter card, I/O connector pins, and XMI node/corner. It also details the functional aspects, such as bus protocol (data transfer, interrupt transactions), integrity features (parity, ECC, timeout), and specifications.
- CIXCD Handbook: This handbook focuses on the CIXCD (Cluster Interconnect XMI-CI Digital) interface, a high-performance I/O interface that connects the XMI bus to the CI (Computer Interconnect) bus. It outlines the interface's features, specifications, and configurations (e.g., node address, boot time, arbitration, cluster size jumpers). It also covers CIXCD self-tests (XCDST), ROM-based diagnostics (RBDs), macrodiagnostics and support programs (EVGAA, EVGAB, EVGAC, EVGEA, EVGEB, EVXCI), and a comprehensive description of CIXCD-specific registers, including XMI visible and internal bus registers.
- DEC LANcontroller 400 (DEMNA) Handbook: This handbook details the DEMNA adapter, a high-performance I/O controller that connects the XMI bus to an Ethernet/802 local area network. It covers the DEMNA's functional overview (microprocessor, memory, XMI interface, Ethernet interface subsystems), physical description, environmental specifications, and configuration options. It also describes power-up self-tests and ROM-based diagnostics, macrodiagnostics and support programs (EVDWC, EVDYE, EVGDB), the DEMNA console monitor program, and a comprehensive overview of DEMNA adapter registers, sequencing flows (power-up/reset, node halt/restart, port shutdown), and error handling mechanisms.
- DWMBA Handbook: This handbook describes the DWMBA adapter, which interfaces the XMI bus to the VAXBI bus. It provides a physical description of the DWMBA/A (XBIA) and DWMBA/B (XBIB) modules and their cabling. The functional overview explains CPU and DMA transactions between the XMI and VAXBI buses. It also covers DWMBA configurations, diagnostics (power-up tests, ROM-based diagnostics, loopback tests), and details the DWMBA registers and IBUS signals, including XMI architecture, VAXBI architecture, and DWMBA-specific registers.