;; x, y, brightness putpixel: push ebp mov ebp, esp push eax push ebx push ecx push edi cld ; Destination mov edi, [mbootinfo.fb_addr] mov eax, [mbootinfo.fb_pitch] mul dword [ebp+12] ;y add edi, eax mov eax, [ebp+8] ;x mul byte [mbootinfo.fb_bytespp] add edi, eax ; Brightness mov eax, [ebp + 16] ; Poke videomemory stosb stosb stosb cmp [mbootinfo.fb_bpp], 24 je .done stosb .done: pop edi pop ecx pop ebx pop eax pop ebp ret