Two byte instructions , Electrical Engineering

Assignment Help:

Two byte  Instructions

In these  instruction the first byte  specifies  the operations code  and the  second byte  specifies the operand. To identify  two byte  instructions one must  observe followings  things.

The instruction have 8 bit  data as their  operand  and have I n their  mnemonics for example MVI ADI, SUI  etc are two  byte  instructions ( but  not LXI as it  has 16 bit data as its  operand).

The  instructions  have 8 bit   port address  as their  operand e g IN and OUT  instructions.

Since  each memory  locations may  store  only byte  hence  two byte instructions  require two memory  locations to store  them  in memory.

Suppose  instruction MVI, A, 8 bit  data is to be stored  at memory  location  2000 H.  It will  be stored  as shown  below.

 

 


Related Discussions:- Two byte instructions

What is current gain in rc coupled amplifier, Q. What is current gain  in R...

Q. What is current gain  in RC coupled amplifier? Current gain is the ratio of the output current to the input current. we represent it as A i . A i =I o /I s it can

What are advantages of segmentation, What are advantages of segmentation...

What are advantages of segmentation ? However because the segment register is 16 bit broad and the memory requires 20 bits for an address the 8086 appends 4 bits segment reg

Spectrum analyser, The spectrum analyser plots amplitude against frequency,...

The spectrum analyser plots amplitude against frequency, in other words it shows signals in the frequency domain. The spectrum analyser has the same trigger options as the oscillos

What do you mean by byte, Q. What do you mean by Byte? Without question...

Q. What do you mean by Byte? Without question, the most vital data structure used by the 80x86 microprocessor is the byte this is true since the ASCII code is a 7-bit non-weigh

What layers are covered under end to end layer connectivity, Q. What layers...

Q. What layers are covered under end to end layer connectivity? Layers 4-7 of ISO-OSI reference model communicate with peer entities in end systems. In intermediate systems,th

Calculate motor efficiency, 1. A self excited shunt generator supplies a lo...

1. A self excited shunt generator supplies a load of 12.5 kw at 125 volts. The field resistance is 25 ohms and the armature resistance is 0.2 ohms. The total voltage drop because o

What is accelerator key, A keyboard shortcut for a command. For example, Ct...

A keyboard shortcut for a command. For example, Ctrl + Alt + Delete are an accelerator key for the task manager in Windows 95.

Dc machines, a 400V 4-pole DC generator takes an armature current of 50A wh...

a 400V 4-pole DC generator takes an armature current of 50A when rotating at 626 rpm. the armature circuit resistance is 0,25ohms. determine the generated emf. DOC

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd