Datasheet

4D SYSTEMS µLCD-28PTU
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microLCD PICASO
DISPLAY
Development Hardware
4D Systems has designed a development board
compatible with the μLCD-28PTU, enabling easy
prototyping to take place and to experiment with
the μLCD-28PTU display module.
This development board is called the 4DevBoard,
and is available from the 4D Systems website
store, or from 4D Systems distributors.
9. 4DGL - Software Language
The μLCD-28PTU utilises the PICASO processor,
which belongs to a family of processors powered
by a highly optimised soft core virtual engine, EVE
(Extensible Virtual Engine).
EVE is a proprietary, high performance virtual-
machine with an extensive byte-code instruction
set optimised to execute compiled 4DGL
programs. 4DGL (4D Graphics Language) was
specifically developed from ground up for the EVE
engine core. It is a high level language which is
easy to learn and simple to understand yet
powerful enough to tackle many embedded
graphics applications.
4DGL is a graphics oriented language allowing
rapid application development, and the syntax
structure was designed using elements of popular
languages such as C, Basic, Pascal and others.
Programmers familiar with these languages will
feel right at home with 4DGL. It includes many
familiar instructions such as IF..ELSE..ENDIF,
WHILE..WEND, REPEAT..UNTIL, GOSUB..ENDSUB,
GOTO, PRINT as well as some specialised
instructions SERIN, SEROUT, GFX_LINE,
GFX_CIRCLE and many more.
For detailed information pertaining to the 4DGL
language, please refer to the following documents:
“4DGL-Programmers-Reference-Manual.pdf”
“PICASO-4DGL-Internal-Functions.pdf”
To assist with the development of 4DGL
applications, the Workshop 4 IDE combines a full-
featured editor, a compiler, a linker and a down-
loader into a single PC-based application. It's all
you need to code, test and run your applications.
4DGL is available to be written in two of the four
environments offered by the Workshop 4 IDE,
Designer and ViSi.