This step describes installation of FOCUS high-resolution graphics support for IBM 3270 type terminals, which require the use of the IBM GDDM graphics support program. Omit this step if you are not installing high-resolution graphics or the ICU Interface.

Note that the basic FOCUS system supports display of high-resolution graphics on ASCII terminals and no additional installation is required.

You can do the simple GDDM link edit to install this feature at any time after the basic FOCUS system is installed. The JCL for this is as follows:

//LINKGDDM EXEC  PGM=IEWL,PARM='LET,NCAL,LIST,SIZE=1024K'
//SYSPRINT       DD   SYSOUT=*
//SYSUT1         DD   UNIT=SYSDA,SPACE=(TRK,(30,10))
//GDDM           DD   DSN=gddmlibrary,DISP=SHR
//FOCCTL         DD   DSN=prefix.FOCCTL.DATA,DISP=SHR
//SYSLMOD        DD   DSN=prefix.FOCLIB.LOAD,DISP=OLD
//SYSLIN         DD   *
 INCLUDE  GDDM(ADMASNT)  GDDM STUB
 REPLACE  CHART
 INCLUDE  SYSLMOD(CORFOC) BASIC FOCUS MODULE
 INCLUDE  FOCCTL(CORFOC)  LINK EDIT CONTROL STATEMENTS
 NAME   CORFOC(R)       FOCUS (CORFOC module) WITH GDDM STUB
/*

Before running this link edit, make sure that the FOCLIB.LOAD library has at least 150 free tracks for the new CORFOC module. You can also create the new module in a scratch load library, delete CORFOC from FOCLIB.LOAD, compress the library to regain the deleted space, and copy the new CORFOC module back into FOCLIB.LOAD.

Note: The GDDM library is often named SYS1.GDDMLOAD. Contact your System Administrator for the name of this library.