PureBasic Forums - English

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DataSection 
  !memory: rd 256 
  !value1: dd 10     ;change to 20 
  !value2: dd 20 
  !result: dd 0 
  out: 
EndDataSection

!mov eax, ptr value1
!mov dword [memory + eax], 0
; Step 2: Store 1 at memory[value2]
!mov eax, [value2]              ; Load value2 into eax
!mov byte [memory + eax], 1     ; Store 1 at memory[value2]

; Step 3: Read the value at memory[value1] into result
!mov eax, [value1]               ; Load value1 into eax
!mov bl, [memory + eax]     ; Move the value at memory[value1] into bl
!mov byte [result], bl           ; Move the value of bl into result

Debug PeekL(?out-4)

Code: Select all

    ; Step 4: Convert the value in result to ASCII
    add byte [result], '0'  ; Convert 0 to '0' or 1 to '1'
    mov al, [result]        ; Load the value of result into al
    mov [output], al        ; Store the ASCII value in the output string

    ; Step 5: Print the value in result (just to see outout)
    mov eax, 1          ; syscall: write
    mov edi, 1          ; file descriptor: stdout
    lea rsi, [output]   ; address of output string
    mov edx, 1          ; number of bytes to write
    syscall

    ; Exit the program
    mov eax, 60         ; syscall: exit
    xor edi, edi        ; status: 0
    syscall