These files are required in order to use the peripherals of the SK-16FX board. Include mb96348hs.h in your main program to use them.
Additionally, start.asm may be used to customise the initialisation of the board and vector.c may be used to implement interrupt handling.
Set UART_SCANNING in start.asm to ON to avoid setting the mode switch to PROG before flashing the board. Instead, flashing is also possible when the mode selection switch is set to RUN.