NAME
        KPutChar - put a character to the console
                   (defaults to the serial port at 9600 baud)

   SYNOPSIS
        char = KPutChar(char)
        D0              D0

   FUNCTION
        Put a character to the console.  This function will not return
        until the character has been completely transmitted.

   INPUTS
        KPutChar is the assembly interface, the character must be in D0.
        _KPutChar and _kputc are the C interfaces, the character must be
        a longword on the stack.