Nightshade: Routine at CBAC

CBAC: Check Player Dead

Used by the routine at StartGame. Checks whether the player has died. If so, a new life is started (or the game is over if there are no lives left). The routine also checks that the instruction at CBDD has not been changed, which is part of the copy protection. The computer is reset if it has been.
CheckPlayerDead	CBAC	LD A,($BC8E)	Return if the player is still alive.
	CBAF	AND A
	CBB0	RET NZ
See Infinite Lives.
	CBB1	LD A,($CBDD)	Fetch the opcode of the instruction at CBDD, and reset the computer by jumping to BuildRandomTable_Reset unless it is 35 (DEC (HL)).
	CBB4	CP $35
	CBB6	JP NZ,BuildRandomTable_Reset
	CBB9	LD A,($BBCD)	Fetch the number of lives left and jump to StartNewLife to start a new life if there are none.
	CBBC	AND A
	CBBD	JR Z,StartNewLife
	CBBF	LD DE,$C839	Play the tune for losing a life.
	CBC2	CALL PlayMusic	Play the tune for losing a life.