Determine the mode words for each 8255 configuration

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Reference no: EM131026267

Course: microprocessors  Book: The Intel Microprocessor Family by James Antonakos (too large to download).

Questions (Chapter 10):

11. Modify the design of Figure 10.7 so that the port address is 409C.

20. Determine the mode words for each 8255 configuration:

            (a) Mode 0, Ain, Bout, Cin

            (b) Mode 1, Aout, Bin

            (c) Mode 2, Bin (Mode 0)

24. Sketch the 11-bit transmission code for an ASCII "K." Use even parity and 2 stop bits.

Chapter 11: Questions 1, 4, and 14 (pp. 412-413)

What are the main differences between polled I/O and interrupt-driven I/O?

How many slaves are required if ICW3 in a master 8259 contains 01100101? What devices are connected to each IR input?

What mode-0 counter value is needed to get a 25-ms time delay? A l-MHz clock is connected to CLK.

Reference no: EM131026267

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