Function 01h Get Keyboard Input Waits for char at STDIN (if nescessary), echoes to STDOUT entry AH 01h return AL ASCII character from STDIN (8 bits) note 1) Checks char for Ctrl-C, if char is Ctrl-C, executes Int\23. 2) For function call 06h, extended ASCII codes require two function calls. The first call returns 00h as an indicator that the next call will be an extended ASCII code. 3) Input and output are redirectable. If redirected, there is no way to detect EOF. Redirection can be detected using Int\21f\44 -redirection
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Ashley Roll has put together a really nice little unit here. Leave off the MAX232 and keep these handy for the few times you need true RS232! |
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