Question

What will be the MASM alternative for this NASM statement?

times 510 - ($-$$) db 0

I was making a MBR bootloader. Basically this statement fills up the remaining 510 bytes on memory with 0 as a bootloader should be 512 bytes in size.

Answer 1

code segment use16
assume cs:code
org 7c00h
start:

; your code
db 510-($-start) dup(0)
dw 0AA55h

code ends
end start

Another alternative is using org to actually seek in the output file, mentioned by the NASM manual as something that works in MASM but not NASM:

; MASM only
        ORG 0 

        ; some boot sector code 

        ORG 510 
        DW 0xAA55