ULTRIX SCSI/CAM Architecture

This document, "Guide to Writing Device Drivers for the ULTRIX SCSI/CAM Architecture Interfaces," published in January 1992, provides comprehensive information for systems engineers on developing device drivers for ULTRIX SCSI/CAM Architecture interfaces. It details the ULTRIX SCSI/CAM Software Architecture, including the CAM and USCA environment models, User Agent driver, SCSI/CAM peripheral device driver routines, CAM Configuration driver, CAM Transport layer (XPT), and SCSI Interface Module (SIM) layers. The guide also describes common SCSI/CAM modules, data structures, routines, and macros, as well as generic SCSI/CAM peripheral device driver routines. Additionally, it covers CAM data structures, SCSI/CAM special I/O interface, and how programmers can define their own SCSI/CAM device drivers with examples. The document also includes appendices on header files used by device drivers, a summary of device driver routines, and SCSI/CAM routines in ULTRIX Reference Page Format.