2. Embedded system
Lab
18ECL66
R L JALAPPA INSTITUTE OF TECHNOLOGY
Kodigehalli, Doddaballapur – 561 203
D A Lavanya Vaishnavi
Assistant Professor
Department of Electronics and communication Engineering

3. “
PART - A

4. ALP to find the number of 0’s and 1’s in a 32 bit data.
AREA program,CODE,READONLY
ENTRY
EXPORT __main
__main
MOV R0,#0xabcd ; Register Rd
MOV R1,#0x1F ; Counter register
L1 MOVS R0,R0,LSR #1 ; Logical right shift of number
ADDCS R3,R3,#1 ; R3 holds number of ones
ADDCC R4,R4,#1 ; R4 holds number of zeros
SUB R1,R1,#1 ; decrementing counter value
CMP R1,#00
BNE L1
stop
END

5. Calculations
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
1 0 1 0 1 0 1 1 1 1 0 0 1 1 0 1
Total number of 0’s : 𝟏𝟎𝒅 = 𝑨𝒉
Total number of 1’s : 𝟐𝟐𝒅 = 𝟏𝟓𝒉

6. RESULT

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8. “
THANK-U