ADC

Syntax: ADC R

Where R can be any of the general purpose registers (A,B,C,D,E,H andL)

Byte: 1byte

Addressing Mode: Register Addressing

Working: 

1. 

2. A= A+ R+c

3. 

4. Flag

Example: ADC B

where [B] = 22H , [A]= 11H

and [c flag]= 1

After execution of ADC B

[A] = 34H 

[B] = 22H

Program: write an ALP for addition of values present in Registers A ,B and C. Where A carries 44H and B carries 30H and C carries 10H. Store result at memory location 5000H.

Label  Mnemonics  Comments

Start: ADD B ; a=a+b

          ADC C ; a= a+c+cy... A = 74+ 10+ 0

          STA 5000H 

 Stop: HLT

Output: [5000H]= 84H