Document revision date: 30 March 2001
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A.6 Local Area Network Device Drivers

This section lists the function codes and function modifiers for the local area network drivers.
Functions Arguments Modifiers
IO$_READLBLK
IO$_READVBLK
IO$_READPBLK
IO$_WRITELBLK
IO$_WRITEVBLK
IO$_WRITEPBLK
P1---buffer address
P2---buffer size
P4---802 format fields (optional) 3
P5---destination address (optional) 3
IO$M_NOW 1
IO$M_RESPONSE 2
IO$_SETMODE
IO$_SETCHAR
P2---extended characteristics buffer (optional) 4 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


1Only for read functions
2Only for write functions
3See text for complete contents
4Use 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$_EXQUOTA SS$_INSFMEM
SS$_INSFMAPREG SS$_IVBUFLEN SS$_MEDOFL
SS$_NOPRIV SS$_NORMAL SS$_OPINCOMPL
SS$_TIMEOUT SS$_TOOMUCHDATA  

A.7 Fast I/O Function Codes and Modifiers

This section lists the function codes and parameters for the $IO_SETUP system service.
Functions Arguments
IO$_READVBLK
IO$_READLBLK
IO$_WRITEVBLK
IO$_WRITELBLK
bufobj - user's buffer
iosobj---I/O Status Area (IOSA)
astadr---Completion AST routine
flags---longword mask
return_fandle---fandle address

A.8 Fast Path Function Codes and Modifiers

This section lists the function codes and function modifiers for Fast Path.
Functions Arguments Modifiers
IO$_SETPRFPATH P1---CPU mask
None
IO$M_PREFERRED_CPU
IO$M_SYS_ASSIGNABLE


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