Embedded System Lab
M. Grace Mercy
Asst. Professor
Dept. of EECE,
GST, GITAM
gmatta@gitam.edu
9866073634
Experiment No.5
Block Transfer and Sum of
first n-numbers
5a.
Aim: To write an ALP to transfer the data from source to destination.
Apparatus required:
1. LPC 2148 microcontroller trainer kit
2. Keil uvision software
3. Personal computer
4. Debugger
5. Connecting cables
AREA PROG, CODE, READONLY
ENTRY
START
LDR R0,=source
LDR R1,=destination
MOV R2,#5
UP
LDR R3,[R0], #04
STR R3,[R1], #04
SUB R2,R2,#1
CMP R2,#0
BNE UP
HERE B HERE
source
DCD
9, 1, 8, 2, 7
AREA Mydata, DATA, READWRITE
destination DCD 0
ALIGN
END
Source
Address of Memory
location
0x000000024
0x000000028
0x00000002C
0x000000030
0x000000034
Data
09
00
00
00
01
00
00
00
08
00
00
00
02
00
00
00
07
00
00
00
Destination
Address of Memory
location
0x40000000
0x40000004
0x40000008
0x4000000C
0x40000010
Data
09
00
00
00
01
00
00
00
08
00
00
00
02
00
00
00
07
00
00
00
5b.
Aim: To write an ALP to find the sum of first 10 numbers
AREA PROG,CODE,READONLY
MOV R1,#10
MOV R2,#0
LOOP
ADD R2,R2,R1
SUBS R1,#01
BNE LOOP
HERE B HERE
END
Result: