Keil MCB167-NET, Руководство пользователя

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16 Chapter 3. Hardware
MCB167-NET board. For this operation the Monitor-166 needs to be
programmed into ROM.
The serial port (COM) is configured as a
standard 3-wire interface. The handshaking
signals are connected to loop the PC’s signals
back. Refer to the figure at the right to
determine how the DB9 connector for this port
is wired.
Prototyping Area
A perforated area is provided on the MCB167-NET for prototyping your own
hardware. All CPU signals are connected to this prototyping area. The signals
provided are driven directly by the CPU. Exercise caution to avoid overloading
these signal lines. Refer to “Pin-Out of Port Signals” on page 23 for the pin-out
of the CPU and bus signals.