A Workstation Specific Information

A.1 Cifer Graphics Terminals

Workstation types

Operation

2634

On open workstation the terminal switches to graphics mode and only the graphics screen is displayed. The terminal remains in graphics mode until the workstation is closed when it is switched back to alpha mode.

T5

On Open Workstation both the Text and Graphics screens are displayed. To view the graphics screen only, press SHIFT + F19, to view the alpha screen press SHIFT + F18. To view both, press SHIFT + F20. The screen being viewed can be changed while plotting is in progress.

Input devices

Locator

A cross hair cursor. Press any key to indicate a point. The break character is Control+Z.

Stroke

A cross hair cursor. Press any key except Return to indicate a point. The Return key signals the end of the entire stroke input. The break character is Control+Z.

Valuator

A value typed on the keyboard. Anything but a valid floating point number is a break. The prompt and echo will appear on the alpha screen.

Choice

A single digit typed on the keyboard. Any other key is a break. The prompt and echo will appear on the alpha screen.

Deficiencies

• String and Pick devices not implemented.
• Initialization of input devices not implemented.

A.2 Pericom Graphics Terminals

Workstation types

The Graphpack terminals have two blue keys and four white keys at the right hand side of the keyboard; on a 7800 terminal these keys are grey. The important difference between the two models is that the Graphpack is capable of displaying both the alpha and graphics screens simultaneously while the 7800 is not.

Operation

7800

On open workstation the terminal switches to graphics mode and only the graphics screen is displayed. The terminal remains in graphics mode until the workstation is closed when it is switched back to alpha mode; this causes the graphics screen to become invisible. The graphics screen can be viewed by pressing the SHIFT+GRAPH, and the alpha screen viewed by pressing Control+GRAPH. The terminal must not be switched into alpha mode during plotting.

Graphpack

On Open Workstation both the Text and Graphics screens are displayed. To view the graphics screen only press the GRAPH key, to view the alpha screen press VDU. To view both, press both keys simultaneously and release the key corresponding to the mode you want the terminal in, second. The mode of the terminal can be changed while plotting provided that the terminal is not actually executing graphics commands.

The following terminal setups must be set:

$$$$

SETUP G block r xx01 block v 0001

The equivalent on an MG series are:

$$$$

Graphics General M) CR Status term Graphics General L) ESC=ESC Graphics Modes D) Pericom 4014 graphics Graphics Directory H) GS/CAN Sets Term. Only

Input devices

Locator

A cross hair cursor. Press any key to indicate a point. The break character is Control+Z.

Stroke

A cross hair cursor. Press any key except Return to indicate a point. The Return key signals the end of the entire stroke input. The break character is Control+Z.

Valuator

A value typed on the keyboard. Anything but a valid floating point number is a break. The prompt and echo will appear on the alpha screen.

Choice

A single digit typed on the keyboard. Any other key is a break. The prompt and echo will appear on the alpha screen.

Deficiencies

• String and Pick devices not implemented.
• Initialization of input devices not implemented.
• Hardware dotted lines are not used because of a firmware bug in the terminal.

A.3 GraphOn 235 Graphics Terminal

Workstation types

Operation

On Open Workstation both the Text and Graphics screens are displayed.

Input devices

Locator

A cross hair cursor. Press any key to indicate a point. The break character is Control+Z.

Stroke

A cross hair cursor. Press any key except Return to indicate a point. The Return key signals the end of the entire stroke input. The break character is Control+Z.

Valuator

A value typed on the keyboard. Anything but a valid floating point number is a break. The prompt and echo will appear on the alpha screen.

Choice

A single digit typed on the keyboard. Any other key is a break. The prompt and echo will appear on the alpha screen.

Deficiencies

• String and Pick devices not implemented.
• Initialization of input devices not implemented. terminal.

A.4 Canon LBP-8 Laser printer

Workstation types

Operation The output from a program that uses these workstations is a file containing a plot commands.

The file is potentially very large if the Cell Array primitive is used.

A.5 Postscript

Workstation Types

Operation

The output from a program that uses these workstations is a file containing postscript commands. The non-EPSF (Encapsulated Postscript Format) workstations produce a file that is designed printed directly on a Postscript printer.

The EPSF workstations produce postscript files that can be merged with other postscript output; for example, inserted into TeX documents - see SUN/9.

A.6 X-Windows Server

Workstation types

Operation

When an X workstation is opened the device handler connects to the default X display (defined by the DISPLAY environment variable) and searches the display for a GWM (Graphics Window Manager) window with the name GKS_nnnn, where nnnn is the workstation type. If the window is not found it is created. The connection identifier is ignored and only one workstation of a particular workstation type can be open at one time.

The size, number of colours and other properties of the window can be controlled either by using the X resources database or by creating the window with the xmake command as described in SUN/130. The colours of colour table entries 0 and 1 are defined by the background and foreground colours of the window.

Changing the size of the window after the window has been created does not alter the size of the plotting area.

When the workstation is closed, the window remains on the display and opening another workstation with the same workstation type will reconnect to the same window.

An overlay workstation is only available if the window has been created with an overlay plane (see SUN/130).

Input devices

Locator

A cross hair cursor. Press any mouse button except the right hand button to indicate a point. A break is indicated by pressing the right hand mouse button.

Choice

A single digit typed on the keyboard. Any other key is a break.

Deficiencies

• Pick device not implemented.
• String device not implemented.
• Valuator device not implemented.
• Hardware text not implemented.
• Initialization of input devices (except locator position) not implemented.
• Read pixel and read pixel array not implemented