Electronics and Communication Engineering - Microprocessors - Discussion
Discussion Forum : Microprocessors - Section 5 (Q.No. 18)
18.
In 8086 the instruction ADD AL, CH means
Discussion:
4 comments Page 1 of 1.
Vidhya Sagar said:
6 years ago
Thank you @Kandukuri Karthik.
KANDUKURI KARTHIK said:
6 years ago
8086 has registers AX BX CX and DX of 16 bit and each 16-bit register is made into two 8 bit registers.
Ex:AX[16]= AH[8]+AL[8]
CX[16]= CH[8]+CL[8] .
We can use a full 16-bit register or half register as well.
ADD AL,CH =>the two 8 bit values in registers AL and CH are added and result placed in register AL.
Ans: Option A.
Ex:AX[16]= AH[8]+AL[8]
CX[16]= CH[8]+CL[8] .
We can use a full 16-bit register or half register as well.
ADD AL,CH =>the two 8 bit values in registers AL and CH are added and result placed in register AL.
Ans: Option A.
Utkarsh said:
7 years ago
Yes. It should be C. I also agree.
Aadhi said:
8 years ago
8086 is a 16 bit register. Then the answer must be option C. How it is given as option a?
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