Why are memory address decoders important? Calculate the starting and ending а) address of the 4K EPROM's, first EPROM starting address is F8000. Draw the proper circuit diagram uses eight 2732 EPROM's for a 32K x 8 section in an 8080 microprocessor-based system. The addresses selected in this circuit are X F8000h-FFFFF.

Systems Architecture
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ISBN:9781305080195
Author:Stephen D. Burd
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Chapter4: Processor Technology And Architecture
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Why are memory address decoders
important? Calculate the starting
and ending
а)
address of the 4K EPROM's, first
EPROM starting address is F8000.
Draw the proper circuit diagram uses eight
2732 EPROM's for a 32K x 8 section in an
8080 microprocessor-based system. The
addresses selected in this circuit are
F8000h-FFFFF.
working of
keyboard/display
b)
Describe
the
8279
programmable
interface IC.
Explain how the read-back control
word functions in the 8254.
c)
d)
Interface the 8279 so that it functions
at 8-bit I/O ports 40H-7FH. Use the
74LS138 as a
decoder and use either the upper or lower
data bus.
Interface a 16-key keyboard and an
8-digit numeric display to the 8279.
e)
Transcribed Image Text:Why are memory address decoders important? Calculate the starting and ending а) address of the 4K EPROM's, first EPROM starting address is F8000. Draw the proper circuit diagram uses eight 2732 EPROM's for a 32K x 8 section in an 8080 microprocessor-based system. The addresses selected in this circuit are F8000h-FFFFF. working of keyboard/display b) Describe the 8279 programmable interface IC. Explain how the read-back control word functions in the 8254. c) d) Interface the 8279 so that it functions at 8-bit I/O ports 40H-7FH. Use the 74LS138 as a decoder and use either the upper or lower data bus. Interface a 16-key keyboard and an 8-digit numeric display to the 8279. e)
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