gtpd3m12Library Guide with Master Index and Glossary

Numerics

1052 state
The lowest and least active of the 5 system states. Support is not available for clock management, file data management, or communication facilities. Keypoint update is active. Certain commands are the only allowable input.

3270 simulation
The facility that allows 3270 devices to be used in place of 2915/4505 display devices or 1977/1980 printers without requiring application code changes.

3480 format
An 18-track recording format used when tape data compaction and auto blocking are not enabled.

3480 XF format
An 18-track recording format used when tape data compaction and auto blocking are enabled.

3480-2 XF format
A 36-track recording format using tape auto blocking. This format is used whether data compaction is enabled or disabled.

4505 simulation
The facility that simulates 4505-type terminals on 3270-type terminals.

4-byte file address
A basic element of data organization in the TPF system that is defined as a FARF3, FARF4, or FARF5 file address.

4-byte file address standard header
A 16-byte record header containing either 4-byte forward and backward chain address fields or zeros starting at X'008'.

4x4 format
An 8-byte file address with a high-order 4-byte indicator that contains zeros and a low-order 4-byte FARF3, FARF4, or FARF5 address. 4x4 format is the method by which a 4-byte symbolic file address in FARF3, FARF4, or FARF5 format is maintained as an 8-byte file address.

8-byte file address
A basic element of data organization in the TPF system that is defined as a 4x4 or FARF6 format. See also 4x4 format.

8-byte file address standard header
A 32-byte record header containing either 4-byte forward and backward chain address fields or zeros starting at X'010'.