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.