How to convert the following code/task to Assembly language?

Question

I want something like this:

if(input == 0)
not; negate accumulator
else
mov 0 acc

mov acc output
slp 1
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Some of this code is already in assembler, but how do I implement the "if" and "else" in a low level assembly language?

Answer 1

you would do something like
load ds:bx, [input] ;; load ds:bx with the address of input
mov ax,ds:[bx] ;; load first byte of input into ax
cmp ax,0 ;; see if the first byte is a nul char
jnz ZeroOutACC
not ax
jmp AAA
:ZeroOutACC
xor ax, ax ;; or just mov ax,0
:AAA
etc etc
It's been a while so I don't remember 8086 syntax that well

Answer 2

Nestor Thank you, that's it 👌🏻