FILE 3.5

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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;
SDP :SDP;
SPL :SPOOL;
BAR :BARCODE READER;
HFS :HOST FILE SERVER; 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;
IMPC :IMAGING WORK STATION