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System Control Blocks

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1116 (74)<br />

120 (78)<br />

124 (7C)<br />

128 (80)<br />

1132 (84)<br />

136 (88)<br />

140 (8C)<br />

144 (90)<br />

TASK CONTROL BLOCK -- MVT<br />

TCBTCB<br />

Address of Next lower Priority TCB<br />

TCBTME<br />

Address of Timer Element<br />

TCBJSTCB<br />

It. I I ,. .. ..... ,.....n,. I I ,...<br />

"'aaress aT 1ST I '-D Tor JOO .)rep<br />

TCBNTC<br />

Address of Previous TCB on Subtask Queue<br />

TCBOTC<br />

Address of Originating TCB<br />

TCBlTC<br />

Address of last TCB on Subtask Queue<br />

TCBIQE<br />

Address of IQE for ETXR Routine<br />

TCBECB<br />

Address of ECB Posted on Task Completion<br />

148 (94) 149(95) 150(96) 151 (97)<br />

TCBTSFlG TCBSTPCT TCBTSlP TCBTSDP<br />

Time Sharing Flags Limit Priority of TS Task Dispatching Priority<br />

152 (98)<br />

156 (9C)<br />

160 (AO)<br />

164 (A4)<br />

168 (A8)<br />

TCBPQE<br />

Address of Region Dummy PQE Minus 8<br />

TCBAQE<br />

Address of Allocated Queue Element<br />

TCBNSTAE<br />

STAE Flags of Current STAE <strong>Control</strong> Block<br />

TCBTCT<br />

Address of the TCT<br />

'TCBUSER<br />

172 (AC) 173 (AD) 174(AE) 17S(AF)<br />

TCBDAR TCBNDSP1 TCBNDSP2 TCBNDSP3<br />

DAR Flags Secondary Non-dispatchability Bits Secondary Non - dispatchability Bits Reserved<br />

176(BO)<br />

180 (B4)<br />

184 (B8)<br />

188(BC)<br />

TCBRECDE<br />

ABEND Recursion<br />

181 (B5)<br />

Reserved<br />

TCBRV001<br />

Reserved<br />

TCBIOBRC<br />

Pointer to lOB Restore Chain<br />

Figure 26B. Task <strong>Control</strong> Block -- MVT (Part 2 of 2)<br />

TCBJSCB<br />

Address of the JSCB 183(B7)<br />

TeB -- MVT 325

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