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The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition
book

The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition

by Lyla B. Das
May 2024
Intermediate to advanced content levelIntermediate to advanced
665 pages
23h 2m
English
Pearson India
Content preview from The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition
296 THE x86 MICROPROCESSORS
Bit Assignment of the Control Word First look at D7 – it suggests the options of I/O mode
or BSR mode. To begin with, let us use the chip in the I/O mode.  is is the normal mode of
operation (BSR mode is a special mode catering to Port C alone which we will deal with, later).
e next thing to do in this, is to decide the mode of operation of the two groups. It is accep
table
for the two groups to be in diff erent or same modes. After this is done, select the option of a
particular port being either an input or output port. For i/p, the corresponding bit is to be 1, and
for output it is to be 0.
9.3 | Modes of Opera ...
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Publisher Resources

ISBN: 9781282663169