Tektronix Terminals and Emulators

Supported device

1. Tektronix 4006/4010 storage-tube terminal; can be used with emulators, but the options below take advantage of features not present in the basic Tektronix terminal.
2. GraphOn Corporation 200-series terminals. These emulate a Tektronix-4010 with enhancements (selective erase, rectangle fill, switch between Tek and VT100 modes).
3. Digital Engineering, Inc., Retrographics modified VT100 terminal (VT640).
4. IRAF GTERM Tektronix terminal emulator, with color extensions.
5. Xterm window on an X-window server. Emulates a Tektronix-4014, with extensions (switch between Tek and VT100 windows).
6. ZSTEM 240 and ZSTEM 4014 terminal emulators for the IBM PC and clones. ZSTEM supports Tektronix 4014 emulation and the 4105 color escape sequences. ZSTEM can be obtained from: KEA Systems Ltd., 2150 West Broadway, Suite 412, Vancouver, British Columbia, Canada, V6K 4L9.
7. Visual-603 and 630 terminals. These are VT100/220 compatible terminals with Tektronix 4010/4014 emulation (Visual Technology Incorporated, 1703 Middlesex Street, Lowell, Mass 01851). The Visual 630 has the capability of displaying dual text and graphics. This feature is not used in this driver. Graphics mode is entered automatically when the graph is drawn but only exited when PGPAGE or PGEND is called. Therefore, for multiple plots interspersed with text I/O, use PGPAGE at the end of each plot. This will prompt for a carriage return before switching. If this is not done, intervening text will appear on the graphics screen. Graphics mode can be entered and exited from the setup menu, or by SHIFT-PF1. Graphics extensions include rectangle fill, selective erase and switch between Tek and VT100 modes.
8. IBM PC's and compatibles running MS-Kermit 3 as a terminal emulator. The video board is assumed to have sufficient memory to retain the graphics image in memory when switched to text. This will be true for VGA and EGA, but some early PCs might not be able to do this. If Kermit is using full VGA resolution (ie SET TERMINAL GRAPHICS VGA), there is not usually enough memory to store the full 480 vertical lines, so the bottom few lines may disappear. Tektronix enhancements include selective erase, colours, rectangle fill, and switching between text and graphics mode. The cursor may be operated with the mouse. Tested with Kermit version 3.1.
9. Tektronix 4100 series color terminals (and emulators, e.g., Versaterm-PRO for Macintosh).

Device type codes

1. /TEK4010 Tektronix-4010 terminal
2. /GF GraphOn terminal
3. /RETRO Retrographics VT640 terminal
4. /GTERM GTERM terminal emulator
5. /XTERM XTERM terminal emulator
6. /ZSTEM ZSTEM terminal emulator
7. /V603 Visual V603 terminal
8. /KRM3 Kermit 3 on IBM-PC
9. /TK4100 Tektronix 4100 series terminals

Default device name

The logged-in terminal: /dev/tty (UNIX), TT: (VMS).

Default view surface dimensions

Depends on monitor; nominally 8in (horizontal) by 6in (vertical).

Resolution

A standard Tektronix terminal displays a screen of 1024 pixels (horizontal) by 780 pixels (vertical), with a nominal resolution of 130 pixels per inch. The actual resolution may be less.

Color capability

• /TEK4010, /XTERM: none; only color index 1 is available; selective erase is not possible. Requests to draw in color index 0 are ignored.
• /GF, /RETRO, /V603: color indices 0 (erase, black) and 1 (bright: usually white, green or amber) are supported. It is not possible to change color representation.
• /GTERM: color indices 0 to 15 are available and default to the standard PGPLOT colors. The color representation can be changed.
• /ZSTEM: color indices 0 to 7 are available and default to the indicated in the ZSTEM setup menu (which default to the standard PGPLOT colors). The color representation cannot be changed.
• /KRM3: color indices 0 to 7 are the standard PGPLOT colors. Indices 8 to 14 are also available, but are BRIGHT versions of 1 to 7, and thus non-standard. Color representation can't be changed.
• /TK4100: color indices 0-15.

Input capability

Depending on the emulation, the graphics cursor may be a pointer, a small cross, or a crosshair across the entire screen. The user positions the cursor using thumbwheels, mouse, trackball, or the arrow keys on the keyboard. The user indicates that the cursor has been positioned by typing any printable ASCII character on the keyboard. Most control characters (eg, ^C) are intercepted by the operating system and cannot be used.

File format

Binary byte stream. Under Unix, the output may be directed to a file; under VMS, this is not possible: the output device must be a terminal.