MAP      TITLE 'DMTMAP     (RSCS)      VM/370 - RELEASE 6'              00001000
*.                                                                      00002000
* MODULE NAME -                                                         00003000
*                                                                       00004000
*        DMTMAP                                                         00005000
*                                                                       00006000
* FUNCTION -                                                            00007000
*                                                                       00008000
*        THE DMTMAP MODULE DESCRIBES THE NON-FIXED ADDRESS              00009000
*        MSUP  STATUS   STORAGE  AREAS  IN   MAIN  STORAGE.             00010000
*                                                                       00011000
* ATTRIBUTES -                                                          00012000
*                                                                       00013000
*        THERE IS NO EXECUTABLE CODE IN THIS MODULE                     00014000
*                                                                       00015000
* ENTRY POINTS -                                                        00016000
*                                                                       00017000
*        DMTMAPMS - THE START OF THE MAIN STORAGE MAP                   00018000
*        DMTMAPME - THE END OF THE MAIN STORAGE MAP                     00019000
*        DMTMAPQU - THE START OF THE SUPERVISOR QUEUE                   00020000
*        DMTMAPQE - THE END OF THE SUPERVISOR QUEUE                     00021000
*                                                                       00022000
*                                                                       00023000
* EXTERNAL REFERENCES -                                                 00024000
*                                                                       00025000
*        NONE                                                           00026000
*                                                                       00027000
*                                                                       00028000
* NOTES -                                                               00029000
*                                                                       00030000
*        THE PAGE ZERO SUPERVISOR QUEUE EXTENT IS GENERATED AT          00031000
*        LABEL 'DMTMAPQU' BY THE GENQ MACRO.  THE 'NUM=' KEYWORD        00032000
*        SPECIFIES THE TOTAL NUMBER OF FREE QUEUE ELEMENTS              00033000
*        TO BE GENERATED.  THIS NUMBER IS CHOSEN SO AS TO MOVE          00034000
*        THE LAST MODULE IN MSUP (ORDINARILY, DMTAKE)  AS NEAR          00035000
*        TO THE END OF PAGE ZERO AS POSSIBLE IN ORDER TO MAKE           00036000
*        THE BEST USE OF STORAGE.  IF THE LAST MODULE IN MSUP           00037000
*        SHOULD EXTEND BEYOND THE END OF PAGE ZERO THE PORTION          00038000
*        RESIDING IN PAGE ONE WILL BE OVERWRITTEN BY DMTINI             00039000
*        WHEN THAT ROUTINE INITIALIZES THE SUPERVISOR QUEUE             00040000
*        EXTENTION IN THAT PAGE.  ANY MODIFICATIONS TO THE MSUP         00041000
*        SOFTWARE SHOULD TAKE THIS INTO ACCOUNT AND ADJUST THE          00042000
*        'NUM=' VALUE ACCORDINGLY.                                      00043000
*                                                                       00044000
* OPERATION -                                                           00045000
*                                                                       00046000
*                                                                       00047000
*         INCLUDED IN DMTMAP ARE:                                       00048000
*                                                                       00049000
*              1. THE MAIN STORAGE MAP -- A TABLE COMPRISING            00050000
*              ONE  BYTE FOR  EACH PAGE  IN ACCESSABLE  MAIN            00051000
*              STORAGE, WITH  EACH BYTE DISPLACEMENT  IN THE            00052000
*              TABLE IMPLYING  ASSOCIATED MAIN  STORAGE PAGE            00053000
*              NUMBER;                                                  00054000
*                                                                       00055000
*              2.    THE  FIRST   (FIXED)   EXTENT  OF   THE            00056000
*              SUPERVISOR STATUS QUEUE -- A CHAIN OF 16-BYTE            00057000
*              ELEMENTS  OF  SUCH  LENGTH  AS  TO  MOVE  THE            00058000
*              SUPERVISOR UP TO THE END  OF THE LAST PAGE IT            00059000
*              OCCUPIES (PAGE 0).                                       00060000
*                                                                       00061000
*                                                                       00062000
*.                                                                      00063000
         EJECT                                                          00064000
DMTMAP   CSECT                                                          00065000
         ENTRY DMTMAPMS,DMTMAPME,DMTMAPQU,DMTMAPQE                      00066000
         SPACE                                                          00067000
DMTMAPMS DC    128X'00'            STORAGE MAP - 128 PAGES (512K)       00068000
DMTMAPME EQU   *                                                        00069000
         SPACE                                                          00070000
DMTMAPQU GENQ  LEN=4,NUM=32        TO BE EXTENDED BY DMTINI             00071000
DMTMAPQE EQU   *                                                        00072000
         SPACE                                                          00073000
         END                                                            00074000