8085 Program to Take All Data Except 00h from an Array

Here we will see we can take all numbers which are not 00H from an array using 8085.

Problem Statement

Write 8085 program to take all numbers which are not 00H from array, and store them into different location. Numbers are stored at 8001 onwards, 8000 is holding the size of array, the results will be stored from 9000.

Discussion

To solve this problem, we are taking the number from memory, then perform OR operation on the number and 00H. If the zero flag is enabled, then we can understand that the number was 00, so we just ignore that. Otherwise we just store it into the correct location.

Input

Address
 Data
…
 …
8000
 0A
8001
 45
8002
 21
8003
 00
8004
 FD
8005
 00
8006
 00
8007
 36
8008
 98
8009
 00
800A
 AC
…
 …

Flow Diagram

 

Program

Address
 HEX Codes
 Labels
 Mnemonics
 Comments
F000
 21, 00, 80
  
 LXI H,8000
 Load the size of array
F003
 4E
  
 MOV C,M
 Store size into C
F004
 11, 00, 90
  
 LXI D,9000
 Load the destination address
F007
 23
 LOOP
 INX H
 Point to next location
F008
 7E
  
 MOV A,M
 Take number from memory to A
F009
 F6, 00
  
 ORI 00H
 OR A with 00H
F00B
 CA, 10, F0
  
 JZ SKIP
 if A is 0, then skip it
F00E
 12
  
 STAX D
 Else store A into memory pointed by DE
F00F
 13
  
 INX D
 point to next location
F010
 0D
 SKIP
 DCR C
 decrease counter by 1
F011
 C2, 07, F0
  
 JNZ LOOP
 if c is not 0, jump to LOOP
F014
 76
  
 HLT
 Terminate the program

 

Output

Address
 Data
…
 …
9000
 45
9001
 21
9002
 FD
9003
 36
9004
 98
9005
 AC
…
 …

 

 

 

Updated on: 2019-07-30T22:30:26+05:30

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