.PAGE SIZE 60,65
.RIGHT MARGIN 65
.SPACING 1
.CENTER
^^IAS 3.0 PATCH TO ALLOW PLAS REMAPPING WITH I/O IN PROGRESS\\
.BREAK
.CENTER
--- --- ----- -- ----- ---- --------- ---- --- -- --------
.SKIP 3
^^IAS 3.0\\ MAKES USE OF IN-CORE OVERLAYS IN THAT THE ^DIRECTIVE ^SERVICE
MODULES AND THE ^^ATL S\\CAN MODULES SHARE KERNEL PAGE 2 ^^(KPAR2)\\.
^KERNEL LOCATIONS ^^.SG.OT\\ AND ^^.SG.OT + \\2 CONTAIN THE ^^PAR\\ VALUES
FOR THE RESPECTIVE OVERLAYS.  ^SINCE THERE IS NO CONVIENT WAY OF INSURING
WHICH OVERLAY IS CURRENTLY ACTIVE, THE PATCH SHOULD BE MADE TO THE APPROPIATE
LOCATION IN ABSOLUTE MEMORY.  ^THE PATCH CONSISTS OF CHANGING THE CONTENTS OF
LOCATION ^^.WNIO + \\4 FROM 1001 ^^(BNE)\\ TO 240 ^^(NOOP).  D\\ETERMINE
THE ABSOLUTE MEMORY LOCATION OF ^^.WNIO + 4\\ AS FOLLOWS:
.SKIP 1
.LEFT MARGIN 4
.INDENT -4
1.  ^GET VALUES FOR THE EXECUTIVE SYMBOLS ^^.SG.OT\\ AND ^^.WNIO\\ FROM 
[11,17]^^EXECUTIVE.STB   (LINK/NOTASK/MAP [11,17]EXECUTIVE.STB).\\
.SKIP 1
.INDENT -4
2.  ^WITH ^^OPE\\ (IN ^^MCR\\ MODE) DETERMINE THE CONTENTS OF ^^.SG.OT.\\
.SKIP 1
.INDENT -4
3.  ^CALCULATE THE PATCH LOCATION ^^(.WNIO + 4)\\ AS FOLLOWS (THE EXAMPLE
VALUES WERE OBTAINED FROM TIME-SHARED ^^IAS\\ SYSTEM).
.SKIP 1
.LEFT MARGIN 6
.NOFILL
.NOJUSTIFY
54230   ^ADDRESS OF ^^.WNIO + 4\\
40000   ^^KPAR2\\ OFFSET
-----
14230
230..   ^DIRECTIVE ^SERVICE OVERLAY ^^PAR\\ VALUE (^^.SG.OT)\\
-----
37230   ^ABSOLUTE MEMORY LOCATION FOR PATCH
.FILL
.JUSTIFY
.LEFT MARGIN 4
.SKIP 1
.INDENT -4
4.  ^USE ^^OPE (\\WITHOUT ^^KNL\\ SWITCH) TO CHANGE MEMORY LOCATION 37230
FROM 1001 TO 240.