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In control word format, if RL1=1, RL0=1 then the operation performed is

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in Microprocessor by (39.4k points)
In control word format, if RL1=1, RL0=1 then the operation performed is

(a) read/load least significant byte only

(b) read/load most significant byte only

(c) read/load LSB first and then MSB

(d) read/load MSB first and then LSB

I have been asked this question in an international level competition.

This is a very interesting question from Programmable Interval Timer 8254 in division Special Purpose Programmable Peripheral devices and their Interfacing of Microprocessor

1 Answer

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by (49.2k points)
The correct answer is (c) read/load LSB first and then MSB

To elaborate: To access 16 bit, first LSB is loaded first, and then MSB.

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