IODEV parameter

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Type of I/O device

Summary

Default value
1
Parameter type
User
Where set
On user's parameter line
Related products
All
Introduced
Model 204 V2.1 or earlier

Description

The input/output device type

Valid settings of IODEV are:

IODEVAccess method/device type
1CCAIN/CCAPRINT (User 0 only)
3BSAM
7SNA Communications Server 3270
11Remote User Language thread (full screen)
19VTAM or TCP/IP (Horizon SQL thread)
23Host Language IFAM thread
27VTAM (Horizon thread)
29Remote User Language thread (line-at-a-time)
37SNA Communications Server 3767 and NTO (z/OS)
39IUCV User Language thread (line-at-a-time)
41IUCV User Language thread (full screen)
43IUCV Host Language Interface thread
45CMS line-at-a-time console. This z/VM device setting is an ALTIODEV value; is cannot be specified on the user's parameter line.
47CMS full screen console. This z/VM device setting is an ALTIODEV value; is cannot be specified on the user's parameter line.
49VTAM or TCP/IP Horizon Remote Command Line (RCL) thread.
51SNA Communications Server (Parallel Query Option/204 thread)

Note: In addition to the above table of valid settings of the IODEV parameter, the value of IODEV on some Model 204 threads can be set as a result of other parameters:

ParameterRecommendedMeaning
SDAEMDEV15IODEV number for Sdaemons
TNDEV21IODEV number for TNSERV threads