add pit8253 dev

makefile.burn_rules

@@ -103,7 +103,7 @@ depobj	= 	burn.o burn_bitmap.o burn_gun.o burn_led.o burn_shift.o burn_memory.o
 			\
 			6821pia.o 6840ptm.o 8255ppi.o 8257dma.o c169.o atariic.o atarijsa.o atarimo.o atarirle.o atarivad.o avgdvg.o bsmt2000.o decobsmt.o ds2404.o dtimer.o earom.o eeprom.o epic12.o gaelco_crypt.o i4x00.o intelfsh.o \
 			joyprocess.o nb1414m4.o nb1414m4_8bit.o nmk004.o nmk112.o k1ge.o kaneko_hit.o kaneko_tmap.o mathbox.o mb87078.o mermaid.o midcsd.o midsat.o midsg.o midcvsd.o midssio.o midtcs.o \
-			namco_c45.o namcoio.o pandora.o pic8259.o poly.o qs1000.o resnet.o rtc9701.o seibucop.o seibusnd.o serflash.o sknsspr.o slapstic.o st0020.o t5182.o timekpr.o tlc34076.o tms34061.o v3021.o vdc.o \
+			namco_c45.o namcoio.o pandora.o pic8259.o pit8253.o poly.o qs1000.o resnet.o rtc9701.o seibucop.o seibusnd.o serflash.o sknsspr.o slapstic.o st0020.o t5182.o timekpr.o tlc34076.o tms34061.o v3021.o vdc.o \
 			tms9928a.o watchdog.o x2212.o \
 			\
 			asteroids.o ay8910.o burn_y8950.o burn_ym2151.o burn_ym2203.o burn_ym2413.o burn_ym2608.o burn_ym2610.o burn_ym2612.o burn_md2612.o \

src/burn/devices/pit8253.h

@@ -0,0 +1,75 @@
+/***************************************************************************
+
+    Intel 8253/8254
+    Programmable Interval Timer
+
+    As uPD71054C (8MHz), uPD71054C-10 (10MHz) - it is a clone of Intel 82C54
+    also available in 28-pin QFP and 44-pin PLCC (many pins NC)
+
+                            _____   _____
+                    D7   1 |*    \_/     | 24  VCC
+                    D6   2 |             | 23  _WR
+                    D5   3 |             | 22  _RD
+                    D4   4 |             | 21  _CS
+                    D3   5 |             | 20  A1
+                    D2   6 |    8253     | 19  A0
+                    D1   7 |    8254     | 18  CLK2
+                    D0   8 |             | 17  OUT2
+                  CLK0   9 |             | 16  GATE2
+                  OUT0  10 |             | 15  CLK1
+                 GATE0  11 |             | 14  GATE1
+                   GND  12 |_____________| 13  OUT1
+
+
+***************************************************************************/
+
+void pit8253_init(INT32 clock0, INT32 clock1, INT32 clock2, void (*cb0)(INT32),void (*cb1)(INT32),void (*cb2)(INT32));
+void pit8253_exit();
+void pit8253_reset();
+void pit8253_scan();
+
+void pit8253NewFrame();
+INT32 pit8253TotalCycles();
+INT32 pit8253Idle(INT32 cycles);
+INT32 pit8253Run(INT32 cycles);
+
+
+UINT8 pit8253_read(INT32 offset);
+void pit8253_write(INT32 offset, UINT8 data);
+void pit8253_gate_write(INT32 gate, INT32 state);
+
+void pit8253_set_clockin(INT32 timerno, double new_clockin);
+void pit8253_set_clock_signal(INT32 timerno, INT32 state);
+
+#if 0
+	// static configuration helpers
+	static void set_clk0(device_t &device, double clk0) { downcast<pit8253_device &>(device).m_clk0 = clk0; }
+	static void set_clk1(device_t &device, double clk1) { downcast<pit8253_device &>(device).m_clk1 = clk1; }
+	static void set_clk2(device_t &device, double clk2) { downcast<pit8253_device &>(device).m_clk2 = clk2; }
+	template<class _Object> static devcb_base &set_out0_handler(device_t &device, _Object object) { return downcast<pit8253_device &>(device).m_out0_handler.set_callback(object); }
+	template<class _Object> static devcb_base &set_out1_handler(device_t &device, _Object object) { return downcast<pit8253_device &>(device).m_out1_handler.set_callback(object); }
+	template<class _Object> static devcb_base &set_out2_handler(device_t &device, _Object object) { return downcast<pit8253_device &>(device).m_out2_handler.set_callback(object); }
+
+	DECLARE_READ8_MEMBER(read);
+	DECLARE_WRITE8_MEMBER(write);
+
+	WRITE_LINE_MEMBER(write_gate0);
+	WRITE_LINE_MEMBER(write_gate1);
+	WRITE_LINE_MEMBER(write_gate2);
+
+	/* In the 8253/8254 the CLKx input lines can be attached to a regular clock
+	 signal. Another option is to use the output from one timer as the input
+	 clock to another timer.
+
+	 The functions below should supply both functionalities. If the signal is
+	 a regular clock signal, use the pit8253_set_clockin function. If the
+	 CLKx input signal is the output of the different source, set the new_clockin
+	 to 0 with pit8253_set_clockin and call pit8253_clkX_w to change
+	 the state of the input CLKx signal.
+	 */
+	WRITE_LINE_MEMBER(write_clk0);
+	WRITE_LINE_MEMBER(write_clk1);
+	WRITE_LINE_MEMBER(write_clk2);
+
+	void set_clockin(int timer, double new_clockin);
+#endif