Denso BHT-604Q User Manual page 18

BHT-604Q
[3] Software Used at the BHT Unit
The BHT unit FLASH memory has a system area and user
area, with the system program stored in the system area
and font files and user programs stored in the user area.
The BHT unit is shipped with the system program and font
files stored in their respective areas.
Application programs (*.PD4) stored in the user area are run by the system program in order to use the
BHT.
It is necessary to download application programs (*.PD4) and data files (product master files etc.) required
to run application programs (*.PD4) to the BHT user area prior to use.
 System Program
 Driver
Drivers is a set of programs that directly controls the BHT hardware. It can be called up by the
BHT-BASIC Interpreter or System Mode.
 BHT-BASIC Interpreter
This program interprets application program (*.PD4) command language and controls the BHT unit
hardware via drivers.
 System Mode
This program is used to operate files, make system environment settings, and perform various types of
tests.
Refer to "Chapter 4 System Operation" - "4.4 System Mode" for further details.
 Font File
These files are required to display JIS 1 and 2 standard Kanji characters at the BHT unit LCD display.
By using font files, the BHT unit is able to display 16 to 40 dot Kanji in application programs (*.PD4).
 Point 
If you do not need to display Kanji characters, you may delete these JIS font files. After deletion, the
memory area which was occupied by these files can be used as a user area. For the deleting
procedure, refer to "Chapter 4 System Operation" - "4.1.4 Performing System Initialization"or "4.5.10
Deleting Font Files (DELETE FILE Menu)."
The names of the font file: FNTFSHG.FN4 (JIS Level 1 and 2 font, 16-dot to 40-dot)
 User Programs
Application programs and data files are downloaded to the BHT user area and are collectively known as
user programs.
To download a BHT-BASIC 4.0 specification user program to the BHT unit, the BHT-BASIC 4.0 Transfer
Utility is required.
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Host computer