XON/XOFF handshaking capability, not available in HP BASIC, has been added to HTBasic. This capability is turned on by CONTROL 9,100;1 and turned off by CONTROL 9,100;0. It is on by default. XON is ^Q (DC1) and XOFF is ^S (DC3).
Hardware handshaking is also supported. It is turned on by
CONTROL 9,5;0 ! use DTR and RTS
CONTROL 9,12;0 ! read DSR, CD, and CTS
CONTROL 9,100;0 ! make sure XON/XOFF is disabled
It is turned off by
CONTROL 9,5;3 ! hold DTR and RTS active
CONTROL 9,12;176 ! ignore DSR, CD, and CTS
CONTROL 9,100;1 ! optionally enable XON/XOFF
By default, hardware handshaking is off.
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