Oki MSM83C154S Timer control register Tcon, Interrupt request flag for external interrupt, TR1

¡ Semiconductor						MSM80C154S/83C154S
Timer control register (TCON)
NAME	ADDRESS	MSB							LSB
		7	6	5	4	3	2	1	0
TCON	88H	TF1	TR1	TF0	TR0	IE1	IT1	IE0	IT0
BIT LOCATION	FLAG				FUNCTION
TCON.0	IT0	External interrupt 0 signal is used in level-detect mode when this bit is "0" and in
		trigger detect mode when "1".
TCON.1	IE0	Interrupt request flag for external interrupt 0.
		The bit is reset automatically when an interrupt is serviced.
		The bit can be set and reset by software when IT0 = "1".
TCON.2	IT1	External interrupt 1 signal is used in level detect mode when this bit is "0", and in
		trigger detect mode when "1".
TCON.3	IE1	Interrupt request flag for external interrupt 1.
		The bit is reset automatically when an interrupt is serviced.
		The bit can be set and reset by software when IT1 = "1".
TCON.4	TR0	Counting start and stop control bit for timer/counter 0.
		Timer/counter 0 starts counting when this bit is "1", and stops counitng when "0".
TCON.5	TF0	Interrupt request flag for timer interrupt 0.
		The bit is reset automatically when an interrupt is serviced.
		The bit is set to "1" when a carry signal is generated from timer/counter 0.
TCON.6	TR1	Counting start and stop control bit for timer/counter 1.
		The timer/counter 1 starts counting when this bit is "1", and stops counting when "0".
TCON.7	TF1	Interrupt request flag for timer interrupt 1.
		The bit is reset automatically when interrupt is serviced.
		The bit is set to "1" when carry signal is generated from timer/counter 1.

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