JANUS? 2020 Hand-Held Computer (4MB) - Intermec

JANUS 2020 Hand-Held Computer User’s Manual (4MB) NF BC
Display Setup
Purpose: Defines the number of lines and columns in the display image, the Video
mode, at what line the display scrolls, and the character height. The reader’s
video modes are used in the same way as on a PC.
The reader’s display size is 16 lines or rows by 20 characters. You can use the
display as a viewport to the reader’s virtual display of 25 lines by 80 characters.
If you select the 25 x 80 display size, you can set the Video mode, character
height, and scroll line; otherwise, those parameters are preset to match the
display size. For help, see “How to Use the Reader’s Display” in Chapter 2.
12-48
Note: If you are working at the DOS prompt, Intermec recommends that you set the
display size to 25 x 80 or you may see inconsistent display results.
While you run an application, the reader reverts to Automatic Viewport Movement
mode and scrolls at line 25 unless your application sets these values. When you exit the
application, the reader restores your previous configuration values.
Default: First digit: Display size 25 lines by 80 characters (25 x 80)
Second digit: Video mode 3 (normal character width, Color mode)
Third digit: Scrolls at line 16
Fourth digit: Normal character height
Syntax: DSdata
Acceptable values for data are four digits corresponding to:
First digit: 0 25 x 80 (lines by characters)
1 16 x 20
2 8 x 20
3 16 x 10
4 8 x 10
Second digit: 0 Video mode 0 (double character width, monochrome)
1 Video mode 1 (double character width, color)
2 Video mode 2 (normal character width, monochrome)
3 Video mode 3 (normal character width, color)
Third digit: 0 Scroll at line 25
1 Scroll at line 16
2 Scroll at line 8
Fourth digit: 0 Normal character height
1 Double character height
Note: The JANUS reader display is a monochrome display. In Color Video mode, the
display supports gray scales. Existing applications may have a more readable display
by using either Monochrome or Color mode.