IA88C00
Data Sheet
Microcontroller
As of Production Version -01
The Port 4 Direction register defines the I/O direction of Port 4 on a bit basis. If a bit of this register is a 1,
the corresponding bit of Port 4 is configured as and input line. If the bit is a 0, the corresponding bit of
Port 4 is configured as and output line.
D0-D7 - P40-P47 Mode, 0 = Output, 1 = Input.
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