8085 Program to Take All Numbers in Range 3CH and 64H in an Array

Here we will see we can take all numbers which are in range 3CH and 64H from an array using 8085.

Problem Statement

Write 8085 program to take all numbers which are greater or equal to 3CH, and lesser than 64H from an array. 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 will take the numbers from memory. Then compare it with 3C. If the Carry flag is set, then it indicates that the number is less than 3C, so just skip it. otherwise compare it with 64H, now if the carry is not set it indicates that the number is larger, so skip it, else we will store the number into proper location.

Input

Address
 Data
…
 …
8000
 0A
8001
 89
8002
 56
8003
 23
8004
 48
8005
 3D
8006
 2A
8007
 4F
8008
 59
8009
 67
800A
 72
…
 …

 

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
 FE, 3C
  
 CPI 3CH
 Compare it with 3C
F00B
 DA, 15, F0
  
 JC SKIP
 if number is small, SKIP it
F00E
 FE, 64
  
 CPI 64H
 else check with 64H
F010
 D2, 15, F0
  
 JNC SKIP
 if number is large, skip it
F013
 12
  
 STAX D
 Else store A into memory pointed by DE
F014
 13
  
 INX D
 point to next location
F015
 0D
 SKIP
 DCR C
 decrease counter by 1
F016
 C2, 07, F0
  
 JNZ LOOP
 if c is not 0, jump to LOOP
F019
 76
  
 HLT
 Terminate the program

 

Output

Address
 Data
…
 …
9000
 56
9001
 48
9002
 3D
9003
 4F
9004
 59
…
 …
Updated on: 2019-07-30T22:30:26+05:30

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