Texas Instruments 990 User Manual page 49

•
• Disconnect Commands
• Miscellaneous Commands.
4.S.l CHANGE DEFAULT COMMANDS. During installation, default values are set for
transmission block lengths, send and receive record lengths, records per block (2780), receive print
and punch default pathnames, and enabling or disabling featllres. The change default commands
enable the user to change the default values a·s necessary during the session. The installed defaults are
listed in Appendix C.
4.5.l.l Block Length Command (BL). Use the BL command to specify the block length for
transmitted data.
General format: Condensed format:
COMMAND:
BL
COMMAND:
BL•block length*
LENGTH: block length
Notes:
The block length for the 2780 may be any decimal or hexadecimal number in the decimal range
80 through 400 (>SO through >190). A hexadecimal number must be preceded by the greater-
than character(>). For communications with an IBM system, the block length must be 400 or
>190.
The block length for the 3780 may be any decimal or hexadecimal number in the decimal range
80 through S 12 (>50 through >200). A hexadecimal number must be preceded by the greater-
than character(>). For communications with an IBM system, the block length must be 512 or
>200. .
Examples:
General format:
COMMAND: BL
LENGTH:
288
Condensed format:
COMMAND: BL•288*
4.5.l.2 Compression/Expansion Command (CE) (3780 Emulator Usen Only). Use the
Compression/ Expansion command to enable or disable the Compression/ Expansion feature. This
feature removes consecutive space characters from input data before transmission.
General format:
Condensed format:
COMMAND: CE
OPTION:
4-11
Digital Systems Group