.CTRL LDX #1 \ Set X to the internal key number for CTRL and fall \ through into DKS4 to scan the keyboardName: CTRL [Show more] Type: Subroutine Category: Keyboard Summary: Scan the keyboard to see if CTRL is currently pressedContext: See this subroutine in context in the source code Variations: See code variations for this subroutine in the different versions References: This subroutine is called as follows: * hyp calls CTRL * savscr calls CTRL * TRADEMODE calls CTRL * TT18 calls CTRL
Returns: X X = %10000001 (i.e. 129 or -127) if CTRL is being pressed X = 1 if CTRL is not being pressed A Contains the same as X