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3.1.2 Power On Reset (POR)
After being reset, a portion of library functions called POR routine initializes the system
hardware, memory buffers, and parameters such as follows.
RS-232
Reader ports
Keypad scanning
LCD
Calendar
LED
Allocate stack area and other parameters.
There must be one and only one "main" function in the C program which is the entry point
of the application program. Control is then transferred to the "main" function whenever the
system initialization is done.
Chapter 3 Terminal Specific Function Library
: all disabled
: all disabled
: enabled
: initialized and cleared to blank, cursor is on and set to the upper-left corner
(0, 0)
: initialized
: off
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