HP OpenVMS I/O User’s Reference Manual: OpenVMS Version 8.4 > Appendix A I/O Function Codes

A.6 Local Area Network Device Drivers

This section lists the function codes and function modifiers for the local area network drivers.

FunctionsArgumentsModifiers

IO$_READLBLK IO$_READVBLK IO$_READPBLK IO$_WRITELBLK IO$_WRITEVBLK IO$_WRITEPBLK

P1 — buffer address

P2 — buffer size

P4 — 802 format fields (optional)[31]

P5 — destination address (optional)[31]

IO$M_NOW[32] IO$M_RESPONSE[33]

IO$_SETMODE IO$_SETCHAR

P2 — extended characteristics buffer (optional)[34]

IO$M_CTRL IO$M_STARTUP IO$M_SHUTDOWN

IO$_SETMODE IO$_SETCHAR

P1 — AST service address

P3 — access mode to deliver AST

IO$M_ATTNAST

IO$_SENSEMODE IO$_SENSECHAR

P1 — device characteristics buffer (optional)

P2 — extended characteristics buffer (optional)

IO$M_CTRL

[31] See text for complete contents

[32] Only for read functions

[33] Only for write functions

[34] Use only with IO$M_CTRL alone or with IO$_STARTUP; that is, the set controller mode

QIO Status Returns

SS$_ABORT

SS$_ACCVIO

SS$_BADPARAM

SS$_BUFFEROVF

SS$_COMMHARD

SS$_CTRLERR

SS$_DATACHECK

SS$_DATAOVERUN

SS$_DEVACTIVE

SS$_DEVALLOC

SS$_DEVINACT

SS$_DEVOFFLINE

SS$_DEVREQERR

SS$_DISCONNECT

SS$_DUPUNIT

SS$_ENDOFFILE

SS$_EXQUOTA

SS$_INFMEM

SS$_INFMAPREG

SS$_IVBUFLEN

SS$_MEDOFL

SS$_NOPRIV

SS$_NORMAL

SS$_OPINCOMPL

SS$_TIMEOUT

SS$_TOOMUCHDATA