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Assembly Language
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Explain the difference between a JMP instruction and CALL instruction

A JMP instruction permanently changes the program counter. A CALL instruction leaves information on the stack so that the original program execution sequence can be resumed.
Posted By:Sophie Brown      Posted On: Oct 26

Assembly Language
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Explain the purpose of the I/O instructions IN and OUT.

The IN instruction is used to move data from an I/O port into the accumulator. The OUT instruction is used to move data from the accumulator to an I/O port. The IN & OUT instructions are used only on microprocessor, which use a separate address space...
Posted By:Lois Schmidt      Posted On: Jan 10

Assembly Language
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What is the difference between the shift and rotate instructions?

A rotate instruction is a closed loop instruction. That is, the data moved out at one end is put back in at the other end. The shift instruction loses the data that is moved out of the last bit locations.
Posted By:Evan Evans      Posted On: Sep 04

Assembly Language
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How many address lines in a 4096 x 8 EPROM CHIP?

12 address lines are in a 4096 x 8 EPROM CHIP.
Posted By:Evelyn Hughes      Posted On: Dec 03

Assembly Language
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What are the Control signals used for DMA operation?

HOLD & HLDA are the Control signals used for DMA operation.
Posted By:Adalhelm Fischer      Posted On: Jul 13

Assembly Language
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What is meant by Wait State?

This state is used by slow peripheral devices. The peripheral devices can transfer the data to or from the microprocessor by using READY input line. The microprocessor remains in wait state as long as READY line is low. During the wait state, the con...
Posted By:Adalric Fischer      Posted On: Nov 24

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