| Developer | Zilog |
|---|---|
| Working state | Discontinued |
| Source model | Closed source |
| Platforms | Zilog Z80 |
| Default user interface | Command-line interface |
| License | Proprietary |
| Official website | www |
TheZ80 Operating System with Relocatable Modules and I/O Management (Z80-RIO) is a general-purposeoperating system developed byZilog in the late 1970s for various computer systems including theZ80 Micro Computer System (MCZ-1) series[1] and theZ80 Development System (ZDS).[2] The MCZ systems were primarily used for software development and automation solutions.[3] RIO was designed to facilitate the development and integration of user's programs into a production environment.[4]
The system provides amodest environment with a minimum of system support and anenhanced environment.
Themodest environment provides a programdebugger with file manipulation capability, afloppy disk driver (supporting up to eight disk drives), and a basic console driver with provision forpaper tape operation.
Theenhanced environment provides access to theRIO Executive and to system support utilities such as theZilog Floppy Disk File System (ZDOS), and theZilog Hard Disk File System (DFS). It also provides access to a number of disk-resident software such atext editor,[5]macro assembler, andlinker.
The following list ofcommands are supported by Z80-RIO.[4][6]
UDOS, a Z80-RIO compatible clone byVEB Robotron, was available for a number of computers by the same company, such as theA 5120 or thePC 1715, which were based on theU880 processor (the latter being a clone of Zilog's Z80).[7] UDOS was also one of the operating systems available for theP8000, a microcomputer system developed in 1987 by theVEB Elektro-Apparate-Werke Berlin-Treptow „Friedrich Ebert“ (EAW) in the German Democratic Republic (DDR,East Germany).[8]
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