Juniper Systems Allegro DOS Manual - Manual (Page 26)

26 Allegro DOS Owner’s Manual
Gold
key +
To toggle between the font sizes, press the GOLD shift key and the Z
key (for Zoom).
If you are using a program that was written for another hand-held
computer with a different screen size, select the font size that best
fi lls the Allegro screen. You can usually avoid making modifi cation
to the original program this way.
When you develop a new DOS program to run on the Allegro, select
a default font that best displays the data on the screen for your
application. If you would like large characters to appear for ease
of reading, use the largest font. If you need to show more data on
the screen at one time, use one of the smaller fonts. Refer to Chapter
6, Software Developer’s Guide for DOS, Extended BIOS Functions for
details about the extended BIOS functions.
▲ Full Screen
When you are in DOS, the Allegro has a full screen stored in memory
that is 80 characters wide by 25 lines deep. Because of the size of the
display window, you can only view a portion of the full screen at a
time. You can view any part of the full screen by panning vertically
and horizontally. Panning can be done automatically using the
auto-panning function or manually using GOLD key + arrow key
combinations.
Full Screen in
Allegro Memory
80 characters wide
x 25 lines deep
Allegro
Display Window