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5. Interface a printer and a keyboard in mode 1. Port A is designed as output for printer with status check I/O and port B is designed as input for keyboard with interrupt I/O. a) Draw the mapping circuit in I/O mapped I/O. b) What are the port addresses captured by the PPI card. c) Generate required control words. d) Write initializing instructions and subroutines to read characters from keyboard and to send them to the printer.

5. Interface a printer and a keyboard in mode 1. Port A is designed as output for printer with status check I/O and port B is designed as input for keyboard with interrupt I/O. a) Draw the mapping circuit in I/O mapped I/O. b) What are the port addresses captured by the PPI card. c) Generate required control words. d) Write initializing instructions and subroutines to read characters from keyboard and to send them to the printer.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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5. Interface a printer and a keyboard in mode 1. Port A is designed as output for printer with status check I/O and port B is designed as input for keyboard with interrupt I/O. a) Draw the mapping circuit in I/O mapped I/O. b) What are the port addresses captured by the PPI card. c) Generate required control words. d) Write initializing instructions and subroutines to read characters from keyboard and to send them to the printer.
Transcribed Image Text:5. Interface a printer and a keyboard in mode 1. Port A is designed as output for printer with status check I/O and port B is designed as input for keyboard with interrupt I/O. a) Draw the mapping circuit in I/O mapped I/O. b) What are the port addresses captured by the PPI card. c) Generate required control words. d) Write initializing instructions and subroutines to read characters from keyboard and to send them to the printer.
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