DCHSECT | Back to Index page |
Prolog Control Block Contents DCHSECT DSECT Storage Layout Cross Reference (Contains links to field and bit definitions) |
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DCHSECT Prolog | Top of page |
NAME : DCH DESCRIPTION: Data Control Hyperblock DSECT : DCHSECT NOTES : MODULE TYPE - Macro FUNCTION : This is the bilingual macro containing the mapping of the data control hyperblock, used to contain cached or accessed FSTs for both SFS directories and CMS formatted minidisks. |
DCHSECT Control Block Content | Top of page |
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DCHSECT Storage Layout | Top of page |
*** DCHSECT - Data Control Hyperblock * * +---------------------------+---------------------------+ * 0 | DCHFWPTR | DCHBWPTR | * +---------------------------+---------------------------+ * 8 | DCHDWSIZ | DCHTRUNK | * +---------------------------+---------------------------+ * 10 | DCHTDISP | DCHDTSIZ | * +---------------------------+------+------+------+------+ * 18 | DCHSEQBD |:FLG1 |:FLG2 |:FLG3 |:FLG4 | * +---------------------------+------+------+------+------+ * 20 | DCHDAMAP | DCHCHMAP | * +---------------------------+---------------------------+ * 28 | DCHBUFAD |///////////////////////////| * +---------------------------+---------------------------+ * *** DCHSECT - Data Control Hyperblock *** Overlay for DCHTRUNK in DCHSECT * * +---------------------------+ * 8 ... C | DCHFSTIU | * +---------------------------+ * 10 * *** Overlay for DCHTRUNK in DCHSECT *** Overlay for DCHTDISP in DCHSECT * * +---------------------------+ * 10 | DCHDSPTR | 14 * +---------------------------+ * *** Overlay for DCHTDISP in DCHSECT *** Overlay for DCHDAMAP in DCHSECT * * +---------------------------+---------------------------+ * 20 | DCHYDISP | DCHCOUNT | * +---------------------------+---------------------------+ * 28 * *** Overlay for DCHDAMAP in DCHSECT *** Overlay for DCHDAMAP in DCHSECT * * +---------------------------+---------------------------+ * 20 | DCHOFFST | DCHLSTRC | * +---------------------------+---------------------------+ * 28 * *** Overlay for DCHDAMAP in DCHSECT |
DCHSECT Cross Reference | Top of page |
Symbol Dspl Value -------------- ---- ----- DCHAUX 001C 04 DCHBUFAD 0028 DCHBWPTR 0004 DCHCHGD 001C 10 DCHCHMAP 0024 DCHCHOP 001C 80 DCHCOUNT 0024 DCHDA 001D 40 DCHDALLO 001C 20 DCHDAMAP 0020 DCHDATA 0030 DCHDSPTR 0010 DCHDTSIZ 0014 DCHDUM 001D 10 DCHDWSIZ 0008 DCHFLG1 001C DCHFLG2 001D DCHFLG3 001E DCHFLG4 001F DCHFSTIU 000C DCHFULL 001D 80 DCHFWPTR 0000 DCHLHBLK 001D 20 DCHLSTRC 0024 DCHNEW 001C 40 DCHOFFST 0020 DCHPFIXL 0030 00000030 DCHRALLO 001C 08 DCHSEQBD 0018 DCHSHR 001D 08 DCHTDISP 0010 DCHTRUNK 000C DCHYDISP 0020 |
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