Specifications

The ULTRIX Operating System, Version 4.5 SPD 26.40.32
• FORTRAN and Pascal: FORTRAN and Pascal are
sold separately as layered products. Certain portions
of the unsupported code which are architecture de-
pendent on VAX is not available on ULTRIX RISC.
Hardware Requirements
The ULTRIX Operating System can execute on valid
VAX, MicroVAX or Digital RISC based systems and must
include the following minimum system configuration.
The actual amount of work supported at one time, with
good performance, depends on the types of processing
performed as well as on the physical memory and sec-
ondary storage available. (Refer to ULTRIX Worksys-
tem Software Product Description (SPD 28.22.xx) for
minimum hardware and device hardware requirements
for all worksystems.)
• Supported ULTRIX processor at appropriate hard-
ware revision level.
• Minimum component of main memory (refer to the
OPTIONAL HARDWARE section).
• Supported ULTRIX system device capable of hold-
ing the supported subsets (refer to the
OPTIONAL
HARDWARE
section).
• For local (non-network) distribution, supported ULTRIX
software load and backup device.
• A valid load device for diagnostics.
• One console terminal with ASCII capability.
• The minimum memory configuration is 6MB for VAX
and 8MB for RISC.
• Amount of memory supported is maximum supported
by hardware configurations or 512MB, whichever is
less.
• No more than ten terminal multiplexers per ULTRIX
driver type may be configured. The actual number of
terminal lines supported at one time, with good per-
formance, depends on the types of processing per-
formed as well as on the physical memory and CPU
type.
• LAT and DECnet traffic is restricted to one Eth-
ernet interface/controller. Each Ethernet interface
/controller must be connected to a separate network
or subnetwork in a routing configuration. Diskless
activity requires the ability to communicate via mop.
Therefore, diskless clients are also restricted to one
Ethernet.
• TK50 media can be read but not written on a TK70
drive.
• To support an RL02 disk subsystem along with a
UDA50 DSA disk subsystem under ULTRIX, the
RL02 controller should be placed on a second
UNIBUS. When both controllers are on a single
UNIBUS the system will experience Data Lates, Hard
disk errors and sometimes file corruption.
ULTRIX/CI Support
10