write code and flowchart in assembly language 8085:

Question

Assembly 8085(write Code and Flowchart):

Find the number of positive elements (most significant bit 0) in a block of data. The length of the block is in memory location 1001H and the block itself begins in memory location 1002H. Store the number of positive elements in memory location 2000H

Before excution:

1001H = 03H

1002H = 13H

1003H = 9AH

1004H = C4H

2000H = XX

After execution:

1001H = 03H

1002H = 13H

1003H = 9AH

1004H = C4H

2000H = 01H

Answer 1

#include <stdio.h>

#include <stdlib.h>

int main()

{

char * data = (char*)malloc(4); //point this at address 0x1001

data[0] = 3;

data[1] = 0x13; //19

data[2] = 0x9A; //1001 1010

data[3] = 0xC4; //1100 0100

char chPosCount;

char * outbuff = &chPosCount; // point this at address 0x2000

char n = data[0];

char i=1;

while (i<=n)

{

printf("%d \n",data[i]);

if (data[i]>0)

{

(*outbuff)++;

}

i++;

}

printf("%d \n", *outbuff);

free(data);

}

/*******************************************/

/.LC0:

.string "%d \n"

main:

push rbp

mov rbp, rsp

sub rsp, 32

mov edi, 4

call malloc

mov QWORD PTR [rbp-16], rax

mov rax, QWORD PTR [rbp-16]

mov BYTE PTR [rax], 3

mov rax, QWORD PTR [rbp-16]

add rax, 1

mov BYTE PTR [rax], 19

mov rax, QWORD PTR [rbp-16]

add rax, 2

mov BYTE PTR [rax], -102

mov rax, QWORD PTR [rbp-16]

add rax, 3

mov BYTE PTR [rax], -60

lea rax, [rbp-26]

mov QWORD PTR [rbp-24], rax

mov rax, QWORD PTR [rbp-16]

movzx eax, BYTE PTR [rax]

mov BYTE PTR [rbp-25], al

mov BYTE PTR [rbp-1], 1

.L4:

movzx eax, BYTE PTR [rbp-1]

cmp al, BYTE PTR [rbp-25]

jg .L2

movsx rdx, BYTE PTR [rbp-1]

mov rax, QWORD PTR [rbp-16]

add rax, rdx

movzx eax, BYTE PTR [rax]

test al, al

jle .L3

mov rax, QWORD PTR [rbp-24]

movzx eax, BYTE PTR [rax]

add eax, 1

mov edx, eax

mov rax, QWORD PTR [rbp-24]

mov BYTE PTR [rax], dl

.L3:

movzx eax, BYTE PTR [rbp-1]

add eax, 1

mov BYTE PTR [rbp-1], al

jmp .L4

.L2:

mov rax, QWORD PTR [rbp-24]

movzx eax, BYTE PTR [rax]

movsx eax, al

mov esi, eax

mov edi, OFFSET FLAT:.LC0

mov eax, 0

call printf

mov eax, 0

leave

ret