IBM Assembler Interview Question:

Explain ICM instruction?

Submitted by: Administrator

ICM means INsert character under mask. its a movement of character under mask bits
eg
ICM R8,B'0110',SRC

Before execution:
R8 ==> 12 34 56 78
SRC ==> AB CD EF 10

After Excecution:
R8 ==> 12 CD EF 78
Submitted by: Administrator

ICM R8,B'0110',SRC
Before Execution :
R8 --- 12 34 56 78
SRC -- AB CD EF 10
After Execution :
R8 --- 12 AB CD 78
SRC -- AB CD EF 10
Submitted by: Naresh

ICM R8,B'0110',SRC
B.E
R8-12 34 56 78
SRC- AB CD EF GH
A.E
R8-12 AB CD 78
SRC-AB CD EF GH
Submitted by: Pavan