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Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure INTBLOK I/O Interrupt Block
0000 0 Bitstring 8 INTXACOD (0) Interrupt information
0000 0 Signed 4 INTPARM For XA/XC, interruption
parameter; for 370, 0
0004 4 Bitstring 4 INTIDENT (0) For XA/XC, subsystem ID word
(SID); for 370, see individual
components
0004 4 Signed 2 * For XA/XC, X'0001'; for 370, 0
0006 6 Signed 2 INTSUBCH For XA/XC, subchannel number; for
370, use INTDEVAD
0006 6 Signed 2 INTDEVAD For XA/XC, use INTSUBCH; for 370,
device address
0008 8 Dbl-Word 8 INTPSW I/O old PSW
0010 16 Bitstring 64 INTXAIRB (0) For XA/XC, actual interruption
response block (IRB); for 370,
constructed IRB
0010 16 Bitstring 12 INTSCSW (0) For XA/XC, actual subchannel
status word (SCSW); for 370,
constructed SCSW
0010 16 Bitstring 1 INTSCCTL Key, S, L, and CC
0011 17 Bitstring 1 * For XA/XC, miscellaneous SCSW
bits; for 370, 0
1... .... INTCCWFM X'80' For XA/XC, CCW format; for
370, 0
0012 18 Bitstring 2 * For XA/XC, more miscellaneous
SCSW bits; for 370, 0
0014 20 Address 4 INTCCWAD For XA/XC, CCW address; for 370,
X'00' and 3-byte CCW address
0018 24 Bitstring 1 INTDEVST Device status
0019 25 Bitstring 1 INTSCHST For XA/XC, subchannel status; for
370, channel status
001A 26 Signed 2 INTRCNT Residual byte count
001C 28 Signed 4 * (13) For XA/XC, extended status word
(ESW) and extended control word
(ECW); for 370, 0
0050 80 Bitstring 1 INTSTAT Status of INTBLOK information
1... .... INTFAIL X'80' INTFAIL For XA/XC, if 1,
TSCH failed and IRB is not valid;
for 370, always 0
.1.. .... INTPS370 X'40' INTPS370 For XA/XC, always
0 (actual information given); for
370, always 1
0051 81 Bitstring 1 * Reserved
0052 82 Signed 2 INTDEVNO Saved device addr for user exit
00000054 INTBLKSZ *-INTBLOK INTBLOK length
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