Question

SEARCH Hack Assembly Language Help

Whenever I run my .asm file, I get a comparison failure at line 3. Please help me resolve this issue. Here is my .asm code, followed by Search.tst.

Search.asm:

1 // Searchs for given value
2
3	(loop)
4	@1
5	A=M
6	D=M
7	@0
8	D=D-M
9	@j1
10	D;JNE
11	@0
12	M=1
13	(j1)
14	@1
15	M=M-1
16	D=M-1
17	@j2
18	D;JEQ
19	@loop
20	0;JMP
21	(j2)
22	@0
23	M=0
24	(end)
25	@end
26	0;JMP
27

Search.tst:

load Search.asm,
output-file Search.out,
compare-to Search.cmp,
output-list RAM[0]%D2.6.2;

set RAM[0] 0,
set RAM[1] 4,
set RAM[2] 1,
set RAM[3] 1,
set RAM[4] 1,
repeat 200 {
ticktock;
}
output;

set PC 0,
set RAM[0] 0,
set RAM[1] 4,
set RAM[2] 1,
set RAM[3] 1,
set RAM[4] 0,
repeat 200 {
ticktock;
}
output;

set PC 0,
set RAM[0] 0,
set RAM[1] 4,
set RAM[2] 1,
set RAM[3] 1,
set RAM[4] 1,
set RAM[5] 0,
repeat 200 {
ticktock;
}
output;

set PC 0,
set RAM[0] 5,
set RAM[1] 6,
set RAM[2] 5,
set RAM[3] 1,
set RAM[4] 5,
set RAM[5] 0,
set RAM[6] 10,
repeat 200 {
ticktock;
}
output;

set PC 0,
set RAM[0] 5,
set RAM[1] 6,
set RAM[2] 0,
set RAM[3] 1,
set RAM[4] -5,
set RAM[5] 0,
set RAM[6] 10,
repeat 200 {
ticktock;
}
output;

set PC 0,
set RAM[0] 8,
set RAM[1] 2,
set RAM[2] 0,
set RAM[3] 1,
set RAM[4] -5,
set RAM[5] 0,
set RAM[6] 10,
repeat 200 {
ticktock;
}
output;

set PC 0,
set RAM[0] 8,
set RAM[1] 2,
set RAM[2] 8,
set RAM[3] 1,
set RAM[4] -5,
set RAM[5] 0,
set RAM[6] 10,
repeat 200 {
ticktock;
}
output;

set PC 0,
set RAM[0] 8,
set RAM[1] 10,
set RAM[2] 0,
set RAM[3] 1,
set RAM[4] -5,
set RAM[5] 0,
set RAM[6] 10,
set RAM[7] 9,
set RAM[8] -20,
set RAM[9] -10,
set RAM[10] 0,
repeat 200 {
ticktock;
}
output;

set PC 0,
set RAM[0] 8,
set RAM[1] 10,
set RAM[2] 0,
set RAM[3] 1,
set RAM[4] -5,
set RAM[5] 8,
set RAM[6] 10,
set RAM[7] 9,
set RAM[8] -20,
set RAM[9] -10,
set RAM[10] 0,
repeat 200 {
ticktock;
}
output;

set PC 0,
set RAM[0] 8,
set RAM[1] 10,
set RAM[2] 0,
set RAM[3] 1,
set RAM[4] -5,
set RAM[5] 0,
set RAM[6] 10,
set RAM[7] 9,
set RAM[8] -20,
set RAM[9] -10,
set RAM[10] 8,
repeat 200 {
ticktock;
}
output;

set PC 0,
set RAM[0] 8,
set RAM[1] 10,
set RAM[2] 0,
set RAM[3] 1,
set RAM[4] -5,
set RAM[5] 5,
set RAM[6] 10,
set RAM[7] 9,
set RAM[8] -20,
set RAM[9] -10,
set RAM[10] 0,
set RAM[11] 8,
repeat 200 {
ticktock;
}
output;

set PC 0,
set RAM[0] 8,
set RAM[1] 10,
set RAM[2] 0,
set RAM[3] 1,
set RAM[4] -5,
set RAM[5] 5,
set RAM[6] 10,
set RAM[7] 9,
set RAM[8] -20,
set RAM[9] -10,
set RAM[10] 0,
set RAM[11] 7,
set RAM[12] 8,
repeat 200 {
ticktock;
}
output;

Answer 1

 xor cx,cx   ; cx-register is the counter, set to 0
loop1   nop         ; Whatever you wanna do goes here, should not change cx
        inc cx      ; Increment
        cmp cx,3    ; Compare cx to the limit
        jle loop1   ; Loop while less or equal

you can code be like it works.