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Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure Threshold RSM common area mapping
0000 0 Signed 4 ThreshPT Protect threshold.
0004 4 Signed 4 ThreshHT High threshold.
0008 8 Signed 4 ThreshLT Low threshold.
000C 12 Signed 4 ThreshISG Initial value set by ALUSR.
0010 16 Signed 4 * Low water mark. Too expensive.
0014 20 Signed 4 ThreshIncZ Times incremented, hit zero.
0018 24 Signed 4 ThreshIncCnt Times Incremented, too close to
0.
001C 28 Signed 4 ThreshDecCnt Times Decremented.
0020 32 Signed 4 ThreshGood Times Good. NB: The ThreshCond
field is set with a MVI.
0024 36 Bitstring 1 * Current condition of the UGALs
regarding the request type.
Entire field set with MVIy only.
1... .... AbovePT X'80' count > PT
.1.. .... AtAboveHT X'40' count >= HT
..1. .... AtAboveLT X'20' Count >= LT
...1 .... BelowLT X'10' Count < LT
0025 37 Bitstring 1 ThreshTFg Flag used for adjustment of
thresholds. Serialization note:
There is no serialization for
this byte. OI/NI are used to turn
bits on and off, MVIy is used to
reset the byte. A progressive
system is used such that a missed
update will not matter.
1... .... PTTransA X'80' Set when at/above PT
observed.
.1.. .... HTTransA X'40' Set when at/above HT
observed.
..1. .... LTTransA X'20' Set when at/above LT
observed.
...1 .... LTTransD X'10' Set when below LT observed.
.... 1... HTSeen X'08' HCPALU:CheckLT has seen
HTTransA
.... .1.. DSSeen X'04' HCPALU:CheckLT has seen DS
run.
.... ..1. DSESeen X'02' HCPALU:CheckLT has seen DS
end.
.... ...1 JB X'01' Journey Begins
0026 38 Bitstring 2 * Reserved
0028 40 Signed 8 ThreshDebug
| Define a local DSECT that maps the first 3 fields of |
| the many system execution space queues.
| |