ULTRIX-32 Version 1.2 Release Notes

This document comprises the Release Notes for ULTRIX-32 Version 1.2, an update that supersedes Version 1.1. It provides essential information regarding new features, software changes, known problems, and corrections, which should be reviewed before installing the software.

Key highlights of this release include:

1. New Devices Supported: Support is added for VAX 8200, VAX 8600, and VAX 8650 processors, along with the TSU05 magnetic tape drive and DF224 2400-baud modem. The VAX-11/725 processor is no longer supported.
2. Documentation Improvements: All associated manuals (Installation Guide, Programmer's Manual, System Manager's Guide) have been revised and expanded.
3. New Commands, Utilities, and Features:
   • Introduction of rabads, a stand-alone program for bad block replacement on DIGITAL Storage Architecture (DSA) disks.
   • Support for Internet subnet routing.
   • Combination of Internet daemons into a single inetd process for improved resource management.
   • New options and modifiers for arff, tar, and mdtar commands.
   • Improved format for the /etc/ttys file and support for shared terminal lines (tip and uucp).
   • A new configuration file option (EMUFLT) for software floating-point emulation.
   • Increased accuracy for the accounting facility (acct).
   • Improvements to the Standard I/O System (stdio), which may affect older programs.
   • Enhanced dbx (Symbolic Debugger) with new features and bug fixes.
4. System V Feature Compatibility: A significant focus of this release is compatibility with UNIX System V software. This includes:
   • Implementation of System V Interprocess Communication (IPC) facilities: Shared memory, semaphores, message queues, and named pipes.
   • Addition of new libraries (libcV.a for C routines and libmV.a for math routines) that provide System V-compatible behavior for various system calls and library routines. Users can explicitly enable System V behavior during compilation.
5. Notes on Software (Corrections and Known Problems): This section is crucial for users and installers, detailing:
   • Corrections and important notices for the Installation Guide, System Manager's Guide, and Programmer's Manual.
   • Critical installation notices, such as the need to back up user-altered files, ensuring default distribution devices are online, and managing /usr file system space if loading all software subsets.
   • Workarounds for various known problems, including time zone mishandling during installation, pseudoterminals becoming unusable after a system crash, uucpsetup configuration issues, uucp and tip problems with DMF32, f77 compiler issues, dskx potentially corrupting disks, and a security concern with /usr/adm/aculog permissions.
   • General notes about Capacity Upgrade Kits from version 1.1 not working with 1.2, the new /etc/ttys file format incompatibility, and the requirement to recompile user-supplied programs referencing kernel data structures via /dev/mem.

The document also includes an appendix on Configuring the MICOM PAD for tip and uucp, providing specific instructions for integrating this hardware.