ZiLOG ZDS-1 Series User Manual page 3

For Software Development
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ZDS-1 Series Development Systems provide a standalone microcomputer system utilizing the versatile RIO
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Operating System for the creation, editing, assembly and debug of the software for the powerful 280 Micro-
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processor.
The RIO Operating System with relocatable modules and I/O management is a general purpose computing
system with an architecture that is designed to facilitate the development process, provide straight-forward
linkage to various systems routines, and enable expansion of system features t o meet the particular needs of
individual users.
Features
OS EXECUTIVE
Map requests for operations on logical units to specific
device handling programs.
Commands may be issued to OS from the console or
by an executing program.
Any number of user defined commands may be added
to the system.
Command sequences may be recorded in files and ex-
ecuted as a group.
ARVANCED ASSEMBLER
Relocatable or absolute object code format.
External Symbol references.
Global Symbol definitions.
Macros and conditional Assembly.
Paged symbol table permits assembly of arbitrarily
large programs in standard memory.
Include directive permits additional files to be merged
into the source program at assembly time.
LINKER
Assigns absolute addresses to program modules.
Paged work space permits any size of file to be edited.
Automatic backup file creation for protection.
Access to other fdes during edit session.
All edit operations for locating and modifying lines
within a file are based on character string matching.
PROM MONITOR
Low level device handlers for system console and
floppy disc.
Bootstrap loader for ease in system initialization.
Machine language Debug package.
ZDOSII DISC FILE HANDLING PACKAGE
Allocates all disc space automatically on an "as needed"
basis.
Supports sequential access to file or direct access to
any specific disc address.
TABBING
Supported throughout the system.
Compact storage of tabbed text on disc.
Resolves External references.
Permits overlays or memory gaps.
Produces memory map and Global address table.
Utilization of a standalone microcomputer permits all program preparation and verification to take place in the same environ-
ment. Smooth and rapid transition from program input, to assembly and linkage to execution and debug provide a rapid and in-
expensive solution for software development.
system language proceisors.
A l l
software is supplied on floppy diskette media. Each
package comes complete with object software, technical
and user documentation, and instructions for use with the
ZDS-1 System.