Question

I’m a beginner in Assembly language. I want to know the difference between a declaration enclosed with ‘ ‘ and without it.

For example,

variable1 db ‘0’

variable2 db 0

I know that the one with ” is when printed, it will show what’s inside the ”.

Thanks! 🙂

Answer 1

With single quotes it’s an ASCII character, without quotes it’s just an integer value:

v1 db '0'    ; ASCII character '0' = 0x30 
v2 db 'A'    ; ASCII character 'A' = 0x41 

v3 db 0      ; integer value 0 = 0x00
v4 db 9      ; integer value 9 = 0x09