Device Nominations
| |
Nomination Routine |
Description of Device |
| A |
gVt125() |
Dec VT125 Terminal |
| B |
gVt240() |
Dec VT240 Terminal |
| C |
gVt241() |
Dec VT241 Terminal |
| D |
gVt330() |
Dec VT330 Terminal |
| E |
gVt340() |
Dec VT340 Terminal |
| F |
gRainbo() |
Dec Rainbow (running via POLY-REGIS) |
| G |
gProf() |
Dec Professional |
| I |
gLn01() |
Dec LN01 laser (running via PLOTLN) |
| J |
gLcp01() |
Dec LCP01 inkjet |
| K |
gLcg01() |
Dec LCG01 inkjet |
| L |
gLj250() |
Dec LJ250 inkjet (running via RETOS) |
Device Characteristics
| Width (mm) |
250 |
250 |
250 |
250 |
250 |
250 |
250 |
260 |
237 |
250 |
244 |
203 |
| Height (mm) |
156 |
149 |
149 |
149 |
149 |
149 |
149 |
140 |
150 |
149 |
183 |
297 |
| X Resolution |
768 |
800 |
800 |
800 |
800 |
800 |
800 |
768 |
2788 |
800 |
2872 |
2388 |
| Y Resolution |
480 |
476 |
476 |
476 |
476 |
476 |
476 |
414 |
1766 |
476 |
2154 |
3492 |
| Colours / Pens |
4 |
4 |
4 |
4Gr |
16 |
4 |
4 |
8 |
1 |
4 |
8 |
256 |
| Colour Palette |
Dyn. |
Dyn. |
Dyn. |
Dyn. |
Dyn. |
Dyn. |
Dyn. |
Fix. |
Fix. |
Fix. |
Dyn. |
Dyn. |
| Character Angles |
x45 |
x45 |
x45 |
x45 |
x45 |
x45 |
x45 |
x45 |
x90 |
x45 |
x45 |
x45 |
| Cursor Types |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
N |
N |
N |
N |
| Cursor Positioning |
Y |
Y |
Y |
Y |
Y |
Y |
Y |
Y |
N |
N |
N |
N |
| Event Types |
Y[1] |
Y[1] |
Y[1] |
Y[1] |
Y[1] |
Y[1] |
Y[1] |
Y[1] |
N |
N |
N |
N |
[1] GKEYPRESS and GLOCATOR only
| Broken Linestyles |
4 (Dashed, dash-dotted, dotted, dash-dot-dotted) |
| Character Sizes |
16 multiples of 1.5mm square (LN01), 16 various (all others) |
| Italic Characters |
0.0, +/-27.0, +/-45.0 |
| Polygonal Filling |
4 patterns (LN01), 8 patterns (LCG01), Solid and up to 256 vertices (all others) |
| Auxiliary Drawing Areas |
No |
Driver Availability
The DEC Regis driver is used for the VT family of graphics screen and is only available on OpenVMS systems.
Colours and Greyscales
On GIGI or LCG01, colours 3 & 9 revert to the default colour.
On LCG01, colour 10 will select the background colour of white.
On LJ250, colour 0 & 10 do not imply 'erase' mode and have no effect.
On VT125 & VT240, default colour numbers are 0,1,2,3.
Graphics Cursor
VT125, PROF, RAINBOW:
The cursor is positioned using the arrow-keys in conjunction with the auxiliary keypad. Pressing the arrow keys moves the cursor one pixel at a time. Pressing a number 'n' (where 'n'=1-9 or 0 for 10) on the auxiliary keypad followed by subsequent arrow keys, moves the cursor 'n' pixels at a time. Due to the nature of the software cursor, the following keys cannot be used to signify a cursor hit: A,B,C,D (ASCII values 65-68).
VT240, VT241, GIGI:
The crosshair cursor is positioned using the arrow-keys in conjunction with the <SHIFT> key. Pressing the arrow keys moves the cursor one pixel at a time. Pressing the <SHIFT> key at the same time, accelerates the cursor movement.
VT330, VT340:
The crosshair cursor can be positioned either with the arrow keys in conjunction with the <SHIFT> key as above, or with the mouse.
Outputting to the LN01 using PLOTLN
The drawing area given for the LN01 is when PLOTLN is used in landscape mode. This is not the default for PLOTLN and therefore the switch must be applied to the command:
PLOTLN/ORIENTATION=LANDSCAPE/REGIS
If PLOTLN is used in its default mode (portrait), then automatic scaling will occur and the resulting size of the plot will be unpredictable.
PLOTLN does not recognise the REGIS code for screen clear (gNewDrawing()) for giving a fresh sheet of paper, therefore it is recommended that single plots are created per program.
Outputting to the LJ250 using RETOS
The driver has been set up for the LJ250 with the background colour as white and the default colour as black and secondly the drawing area has been set up to an A4 media size rather than the assumed default of American A size. For this reason, the RETOS command should be as follows:
RETOS/NOREVERSE/SIZE=(8.,11.3) filename
The drawing area is by default in portrait mode.
