::.. I/O Devices ..::
| I/O Devices | |||
|---|---|---|---|
| Device | Explanation | ||
| PCON | PROM Console Driver Basic buffered terminal input and output. ROM resident. Operates without the booted RIO OS. |
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| FLOPPY | PROM Floppy Disk Driver Floppy disk read and write operations at sector level. ROM resident driver on ZDS systems and floppy based MCZ systems. Loadable driver on hard disk based MCZ systems. |
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| NULL | Null Device Pseudo device driver, which responds to all requests and performs no operation. NULL is a builtin driver in the RIO executive OS. |
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| CON | RIO Console Driver Extended buffered terminal input and output. Performs tabulator expansion and transparent transmission (binary transfer). Provides customizable end of line control to adapt to different terminals. CON is a builtin driver in the RIO executive OS. |
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| ZDOS | Zilog Disk Operating System File system driver. Performs floppy disk read and write operations at file level. Also performs the operations for creating, renaming and deleting files. |
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| ZDOSI | (ZDOS-I, speak ZDOS one) Compatibility driver to read the floppy disk format of OS 2.1 (the predecessor of RIO). Read only driver to read and convert the older Zilog disks. Also called OS 2.1 ZDOS emulator. |
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| DISK | Bare disk driver for hard disks Hard disk read and write operations at sector level. ROM resident driver on hard disk based MCZ systems. Loadable driver on floppy disk based MCZ systems with additional hard disk capability. |
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| DFS | Hard Disk File System File system driver. Performs hard disk read and write operations at file level. Also performs the operations for creating, renaming and deleting files. ROM resident driver on hard disk based MCZ systems. Loadable driver on floppy disk based MCZ systems with additional hard disk capability. |
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| LP, PRINTER, ... | Line Printer or other printer drivers Drivers to send data to printers that are connected to different interfaces available (serial, parallel, Centronix). |
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