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- CommTools -- TERMINAL.TXT file
- Last updated: 07-07-92
-
- TERMINAL FEATURES NOT SUPPORTED IN THE EMULATIONS
-
- CommTools emulates several terminals. This file lists and explains the
- features of the original terminals not supported in the emulations. The
- reasons that a feature is not supported almost always falls into one of
- two categories:
-
- * The feature is not supported across the full line of PC Hardware.
- Example: DEC VT100 132-column mode.
- Since CommTools is a communications library, rather than a
- comprehensive video library, it makes weak assumptions about the
- runtime video environment. Although certain PC-compatible hardware
- may allow the support of esoteric terminal features, the hardware is
- likely to require custom programming.
-
- * It is not relevant to the PC context.
- Example: ANSI.SYS keyboard redefinition.
- The ANSI.SYS specification allows the redefinition of the PC
- keyboard. It is both dangerous and unnecessary to support this
- feature. The CommTools implementation of terminal emulation at a
- very low level allows the programmer to re-define keys within the
- application language.
-
-
- Unsupported Terminal Features (terminals listed in alphabetical order)
- ----------------------------------------------------------------------
-
- Terminal: IBM ANSI.SYS
- Keyboard redefinition;
-
- Terminal: DEC VT100
- Double-height and Double-width characters;
-
- Terminal: DEC VT220
- Features listed under DEC VT100;
- Smooth scrolling;
-
-