Hi, I am just trying to learn ASM today, sorry if what I ask is a bit stupid! I have a soldi state HDD I need to stress test. I want to write a boot sector to a FDD, that will write all 1's to the first sector of the first HDD, and then write all 0's, and do it over and over, and display a count on screen of how many time it has done it so far (a read/verify in the middle would be good too). I am finding it all a bit alien atm though. So far I have writing of some txt (kind of) working:
[BITS 16]
[ORG 0x7c00]
wdata db "TESTTESTTESTTEST"
mov ah, 02h ;Set to 1,1
mov dh, 1
mov dl, 1
Int 10h
mov ah, 0eh ; Print S
xor bl, bl
mov al, 'S'
Int 10h
mov ah, 0eh ; Print T
xor bl, bl
mov al, 'T'
Int 10h
mov ah, 0eh ; Print A
xor bl, bl
mov al, 'A'
Int 10h
mov ah, 0eh ; Print R
xor bl, bl
mov al, 'R'
Int 10h
mov ah, 0eh ; Print T
xor bl, bl
mov al, 'T'
Int 10h
loop:
mov ah, 03h ;Write mode
mov al, 1 ; write 1 sector (512 bytes).
mov cl, 1 ; sector
mov ch, 0 ; cylinder
mov dh, 0 ; head
mov dl, 80h ; first HDD
mov bx, wdata
mov es, [wdata]
Int 13h
jmp loop
TIMES 510-($-$$) DB 0
DW 0xAA55
Can anyone give me any advice? thanks!
