FILE 3.5
From VistApedia
The DEVICE File (#3.5) is stored in the global root of ^%ZIS(1, and each entry corresponds to a name for I/O (Input and Output) in the VistA system. Generally speaking characters are sent to and received from an I/O device in most computer systems as a normal part of interaction with a user.
The devices in VistA are segmented by the TYPE Field which has the following values:
| INTERNAL ABBREVIATION | EXTERNAL VALUE | Intended use |
| TRM | TERMINAL | hard connected terminals such as consoles |
| OTH | OTHER | |
| MT | MAGTAPE | sequential magnetic tape |
| SDP | SDP | unused- was Sequential Disk Processing - MUMPS-as-OS disk storage |
| SPL | SPOOL | unused - was in-MUMPS disk/printer spooling |
| BAR | BARCODE READER | |
| HFS | HOST FILE SERVER | commonly used - filesystem storage, print spooling, etc. |
| VTRM | VIRTUAL TERMINAL | soft connect terminals over the network |
| HG | HUNT GROUP | providing for banks of "alike" devices |
| RES | RESOURCES | synchronization and limiting background processes |
| CHAN | NETWORK CHANNEL | devices attached with TCP/IP addresses and ports |
| IMPC | IMAGING WORK STATION |
