Appendix A Supplemental Information For D-Series Systems - HP TACL Programming Manual

Appendix A
D-Series Operating
System Features
Supplemental Information
for D-Series Systems
The D-series operating system supports expanded numbers of processes and devices.
This appendix introduces the features available in D-series software and includes the
following information:
An overview of D-series operating system features
Changes to the $CMON interface
Changes to completion code handling
Changes to the EMS and SPI interfaces
For detailed information about D-series changes to the TACL product, including a list
of required and optional changes, see the TACL Reference Manual.
The following manuals contain additional information about D-series software:
The Introduction to D-series Systems provides an overview of D-series
enhancements.
The Guardian Application Conversion Guide describes differences between C-series
and D-series applications.
The Guardian Programmer's Guide provides programming information for a
D-series operating system.
The System Procedure Calls Reference Manual describes syntax and programming
considerations for D-series procedures.
The System Procedure Errors and Messages Manual describes error codes, system
messages, and trap numbers for C-series and D-series procedures.
The D-series System Migration Planning Guide contains planning information for
migration from a C-series operating system to a D-series operating system.
The D-series operating system provides the following features:
More concurrent processes per CPU.
The D-series operating system allows more than 256 concurrent processes per CPU
(C-series software is limited to 256 concurrent processes per CPU). The actual
usable number of processes depends on available resources such as physical
memory.
More devices per system.
New file name storage format.
The D-series file name is stored as a variable-length string. The new storage format
applies to all file names, including disk files, devices, and processes.
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