If PC7 of 8255 should be set in BSR mode, then the command word should beO a. 8FhO b. can be 0OFH or 7FhO . 81hO d. can be 8Fh or 81hO e. 7FhO f. OFh

Answered: If PC7 of 8255 should be set in BSR…

If PC7 of 8255 should be set in BSR mode, then the command word should be O a. 8Fh O b. can be OFh or 7Fh O. 81h O d. can be 8Fh or 81h О е. 7Fh O f. OFh

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

If PC7 of 8255 should be set in BSR mode, then the command word should be
O a. 8Fh
O b. can be 0OFH or 7Fh
O . 81h
O d. can be 8Fh or 81h
O e. 7Fh
O f. OFh

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