How do you initialize a register to 0000?

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Question Posted / guest

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How do you initialize a register to 0000?..

Answer / ajay kuriyal

from my point of view the best way is to do boolean
XR RX,RX

Now RX will have '0000'

Is This Answer Correct ?

25 Yes

2 No

How do you initialize a register to 0000?..

Answer / guest

LA Rx,0
L Rx,=F'0'
XR Rx,Rx

Is This Answer Correct ?

17 Yes

4 No

How do you initialize a register to 0000?..

Answer / hariconda

By using shifting instructions also we can initialize zeros
to register.

SLL Rx,31

SRL Rx,31

Is This Answer Correct ?

12 Yes

1 No

How do you initialize a register to 0000?..

Answer / pazhanivel seethapathy

The standard ways to intialize registers are as follows

1. SR Rx,Rx or
2. LA Rx,0 or
3. XR Rx,Rx

Is This Answer Correct ?

10 Yes

1 No

How do you initialize a register to 0000?..

Answer / guest

we can use the XR instruction.

Is This Answer Correct ?

9 Yes

0 No

How do you initialize a register to 0000?..

Answer / sunny

XR Rx,Rx

This is the best way and most efficient way of initializing
the register values or Label values to '0'.

Its because the time required to execute a Logical
Instruction is always less than the Arithmetic Instructions.

e.g SR Rx,Rx consumes more execution time than XR Rx,Rx.

So XR Rx,Rx is a better way to do obtain our target.

Is This Answer Correct ?

7 Yes

0 No

How do you initialize a register to 0000?..

Answer / sourav

The best way to initialize a register is
SR Rx,Rx
instruction.

There are other ways as well, few of them are already
posted.

Is This Answer Correct ?

11 Yes

5 No

How do you initialize a register to 0000?..

Answer / anonym

1. Register i-memory (fastest)
LA x,0
SRL x,64

2. register register
XGR/XR x,x
SGR/SR x,x

3. register memory (not very clever)
L x,=A(0)
LG x,=AD(0)

Is This Answer Correct ?

4 Yes

2 No

How do you initialize a register to 0000?..

Answer / sourabh

XR Rx,Rx
Logical instruction is always fast.

Is This Answer Correct ?

0 Yes

0 No

How do you initialize a register to 0000?..

Answer / sam

I'm assuming something like

R0 EQU 0
R1 EQU 1
:
Rx EQU x

is coded somewhere in the program

Is This Answer Correct ?

2 Yes

26 No

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