Help me please to convert this Sudoku code into Assembly

char pollReadKey() {

char ch = NOKEY; // Initialized as no key.

int count = POLLCOUNT; // Number of checks to be done

PORTA = 0x0f; // Resets PORTA

do {

if (PORTA != 0x0f) { // Checks for key press

delayms(1);

if (PORTA != 0x0f) { // Check again for key press

ch = readKey(); // Reads key and converts to ASCII

break; // End loop

}

}

count--;

} while (count);

return ch;

}