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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
PERIPHERAL INTERFACING  I 291
9.2 | Programmable Peripheral Interface (PPI)-8255A
is chip is also called a parallel port chip and it eases out the problems and issues related
to parallel data transfer. Parallel data transfer is what we have done all this time. We have
transferred 8/16 bits at one go either to/from memory or I/O devices.  e I/O devices we
have discussed (Chapter 7) were quite simple and needed only a read/write control signal
and a select pulse generated during the read/write cycle. However, when I/O devices are
more versatile and have more features, a PPI will be very useful, especially when more than
one I/O device is ...
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Publisher Resources

ISBN: 9781282663169