Appendix A. Data areas

GDDM V3R2 Diagnosis

Appendix A. Data areas

GDDM V3R2 Diagnosis
SC33-0870-01

------------ Diagnosis, Modification or Tuning Information -------------

This section lists the major GDDM control blocks that are likely to be produced in trace output. They are presented in alphabetic order of mnemonic. The description of each has three parts:

A reference list that precedes the detailed portion of the control block. The format of the reference list is:
Control block mnemonic and title
For example, ADMTAAB - application anchor block (AAB)
Function
A brief description of what the control block does.
An alphabetic index for all items contained in the control block.
A tabular description of the storage layout of the control block. The following information is provided:
Offset
Field addresses in hexadecimal notation, relative to the beginning of the control block.
Type
The type of item, one of:
A
Address
B
Bit string
C
Character string
F
Fixed binary signed
U
Unsigned binary.
Bit positions and values in bit strings are shown in the following examples:
```
                       1... .... (a reference to bit 0)
                       .... ..11 (a reference to bits 6 and 7).
```
Length
The length of the field in bytes, as a decimal value.
Name
The name of the field.
Description
A brief description of the meaning of the field.

GDDM object file formats are described in the GDDM Base Application Programming Reference book.

Subtopics:

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