NonStop Operating System Event Management Programming Manual

Tape Process Event Messages (ZTAP)
HP NonStop Operating System Event Management Programming Manual—520372-020
10-12
Tape Process (ZTAP-) Definitions
ZTAP-TKN-EIO-RDST EIO instruction RDST word (see Table 10-4).
ZTAP-TKN-EIO-CHANSTAT EIO instruction channel status word (see Table 10-5
).
ZTAP-TKN-IIO-RIC RIC word returned by the IIO instruction (see Table 10-6
on
page 10-13).
ZTAP-TKN-IIO-RIST RIST word returned by the IIO instruction (see Table 10-7
on page 10-13).
ZTAP-TKN-IIO-CHANSTAT Channel status word returned by the IIO instruction (see
Table 10-8
on page 10-13).
Table 10-4. ZTAP-TKN-EIO-RDST Values
Bit Position Meaning
<0> If equal to 1, a controller ownership error occurred.
<1> If equal to 1, an interrupt is pending.
<2> If equal to 1, the controller is busy with the previous EIO instruction.
<3> If equal to 1, the channel detected a parity error.
<4> If equal to 1, the controller is unloaded and executing from the PROM.
<5:15> All bits are zeros.
Table 10-5. ZTAP-TKN-EIO-CHANSTAT Values
Value Meaning
0 No errors were detected.
%100 A nonzero device status was returned. See the previous token, ZTAP-TKN-
EIO-RDST.
%200 The channel detected a parity error on the RIC word.
%400 The channel detected a parity error on the RIST or RDST word.
%177777 The I/O channel timed out.
%1xxxxx The channel status is set to the IOBUS control field. (A handshake problem
occurred between the controller and the channel.)
Token Description (page2of2)