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CROSS ASSEMBLER->Predefined Symbols->Predefined 8051 data addresses

    

	ACC	E0H	Accumulator
	B	F0H	Multiplication register
	DPH	83H	Data pointer (high byte)
	DPL	82H	Data pointer (low byte)
	IE	A8H	Interrupt enable
	IP	B8H	Interrupt priority
	P0	80H	Port 0
	P1	90H	Port 1
	P2	A0H	Port 2
	P3	B0H	Port 3
	PSW	D0H	Program status word
	SBUF	99H	Serial port buffer
	SCON	98H	Serial port controller
	SP	81H	Stack pointer
	TCON	88H	Timer control
	TH0	8CH	Timer 0 (high byte)
	TH1	8DH	Timer 1 (high byte)
	TL0	8AH	Timer 0 (low byte)
	TL1	8BH	Timer 1 (low byte)
	TMOD	89H	Timer mode
	PCON	87H	Power control register