Memory Operation

Load(/read/Fetch)

copy the content

memory content doesn’t change

registers cant be used

Instruction and Instruction sequencing

• Data Transfer btw memory and processor

• Arthemetic and logic op on data

• Program sequencing and control

• I/o transger

Registr transfer Notation

• Identify a location by a symbolic name standing fot its hardware binay addresss -Name ofor the address of meory location(LOC,PLACE ,A,VAR2..)

• Processor registers names may be(R0,…,R5,…)

• Contents of a location are denoted by square blackers areound the name of the location eg: R1 <- [Loc] R3 <- {R1}+{R2}

Assembly Language notation

Represnt machine instructions and programs

• Move LOC , R1=> R1<-[LOC]

• ADD R1,R2,R3=> R3<-[R1]+[R2]

Instruction

Instructions contains oPcode and Operend eg: Move LOC,R1 - MOVE

opcde can tell the

…

Instruction type

Instruction Execution and straight line sequencing

There r 2 phases of Instruction Execution

Instruction Execution and branchin

using loop

Condition Codes

These flags are set to 1 or cleared to 0

immediade adressing

represents the value is shared