ClearPath OS 2200 Series Release 13.2 Software Planning and ...

D.3. BDI Groups
BDI Groups
At present, the BDIs at the application level of the address tree are allocated into three
groups:
• Group 1: Fixed (between 1 and MAXBDI)
• Group 2: Dynamic Code and Data (between MAXBDI+1 and 4095)
• Group 3: Dynamic Code (between 4096 and 32766)
GROUP 3 -----------------4096 through 32766--------------------------
Application Level Dynamic BDIs
Used for Extended Mode Code & Data banks. This is
the default for EM Code banks:
Exec: GAP/SAP=Execute
Linking System: BANK_TYPE=CODE
GROUP 2--------------------------4095------------------------------
Application Level Dynamic BDIs (974 total BDIs)
Used for Extended Mode Code & Data banks. This is
the default for EM Data banks:
Exec: GAP/SAP=Execute
Linking System: BANK_TYPE=CODE
Used when there are no banks > 4095 available.
Used for Linking System control banks (2 per subsystem).
GROUP 1---------------------MAXBDI (3121 default)------------------
FIXED BDIs (3121 total, 866 customer, 2255 'Unisys')
Used for Basic Mode Common banks.
Used for Object Module Subsystem Fixed Gate banks.
-------------------------------------------------------------------
Note: Group 3 banks cannot be referenced from basic mode. Also, any Executive
Requests (ER) that reference BDIs in E,BDI (basic mode) format cannot be used with
banks that have BDIs larger than 4095.
7831 0349–043 D–3