IO$_READVBLK
IO$_READLBLK IO$_READPBLK | P1 — buffer address P2 — byte count | IO$M_DATACHECK[12] IO$M_INHRETRY IO$M_REVERSE[13] |
IO$_WRITEVBLK
IO$_WRITELBLK IO$_WRITEPBLK | P1 — buffer address P2 —
byte count | IO$M_DATACHECK[12] IO$M_INHRETRY IO$M_INHEXTGAP[14] IO$M_NOWAIT[15] IO$M_ERASE[16] |
IO$_SETMODE
IO$_SETCHAR | P1 — characteristics buffer address P2 —
characteristics buffer length[17] | |
IO$_CREATE
IO$_ACCESS IO$_DEACCESS IO$_MODIFY IO$_ACPCONTROL | P1 — FIB descriptor
address P2 — file name string address P3 — result string length address P4 —
result string descriptor address P5 — attribute
list address | IO$M_CREATE[18] IO$M_ACCESS[18] IO$M_DMOUNT[19] |
IO$_SKIPFILE | P1 —
skip n tape marks | IO$M_ALLOWFAST[20] IO$M_INHRETRY IO$M_NOWAIT[15] |
IO$_SKIPRECORD | P1 —
skip n blocks | IO$M_INHRETRY IO$M_NOWAIT[15] |
IO$_REWIND
IO$_REWINDOFF IO$_UNLOAD | None | IO$M_INHRETRY IO$M_NOWAIT[15] IO$M_RETENSION |
IO$_WRITEOF | None | IO$M_INHEXTGAP[14] IO$M_INHRETRY IO$M_NOWAIT[15] |
IO$_SENSEMODE
IO$_SENSECHAR | P1 — characteristics buffer address[17] P2 — characteristics buffer
length[17] | IO$M_INHRETRY |
IO$_DSE[21] IO$_PACKACK IO$_AVAILABLE | None | None |
