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Appendices
*7
The BHT-4000 may display the system status on the bottom line of the LCD. To display the
system status, set 1 to this port; to erase it, set 0. For the system status indication, refer to
Chapter 7, Subsection 7.1.7.
*8
This byte sets the re-read prevention enabled time length in units of 100 ms. Specification
of zero (0) permanently enables the re-read prevention so that the BHT-4000 does not read
same bar codes in succession.
*9
An 8-bit binary pattern (bits 7 to 0) on the output ports 10h to 64Fh (which are stored in the
VRAM) represents a basic dot pattern column of the LCD. Bit value 1 means a black dot.
The port number gives the dot column address.
If you send graphic data to the VRAM area (assigned to the bottom line of the LCD) by
using the
OUT statement when the system status is displayed on the LCD, the sent data
will be written into that VRAM area but cannot be displayed on the bottom line of the LCD.
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