ASM Community

I would like to know if it's possible to write a function for C++ using 32bit inline asm in order to get unbuffered input. I was able to use 16 bit asm on my dos compiler, but using the same call locks up all of my win32 compilers such as Code Warrior, VC6, and Dev C

My 16 bit code was something like

unsigned short GETCH(void)

{

    unsigned short raw;

    

    _asm

   {

        mov ah,0x10

        mov raw,ax

        int 0x16

    }

    

    return raw;

}

From there I would process the scan code to do what task that I needed. I cannot get unbuffered input at all using standard c++. Could someone explain why this code won't work with 32 bit compilers or possibly provide a snippit of inline code that I could use with the aforementioned compilers.

The apps are all console.

TIA

That should read 1 character from console in AL (ebx holds handle for STDIN):

        invoke GetConsoleMode ebx, addr oldstate

        invoke SetConsoleMode ebx, 0

        push   0

        mov edx, esp

        push   0

        mov ecx, esp

        invoke ReadConsole ebx, ecx, 1, edx, 0

        invoke SetConsoleMode ebx, oldstate

        pop   ecx

        pop   edx

        and   eax,eax

        jz    @F

        movzx eax,cl

@@: