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author Ryan Holtz <rholtz@batcountryentertainment.com>2010-08-26 04:44:49 +0000
committer Ryan Holtz <rholtz@batcountryentertainment.com>2010-08-26 04:44:49 +0000
commitd84d4f15626a3b30c9e962858186d917527d0d34 (patch)
treeef8490cc90d3c9b873657ff202f16a0e258ca486 /src/emu/machine/6840ptm.h
parent553d18f64666d478f0daf2d8671c03ebfcb2d4d3 (diff)
Updated the PTM 6840 device to no longer be legacy. [Harmony]
Non-whatsnew note: I tested cchasm, seems to still work properly, though I really suck at it. I notice it's used by mpu4drvr, but that driver scares me, so hopefully someone else can test that one.
Diffstat (limited to 'src/emu/machine/6840ptm.h')
-rw-r--r--src/emu/machine/6840ptm.h148
1 files changed, 138 insertions, 10 deletions
diff --git a/src/emu/machine/6840ptm.h b/src/emu/machine/6840ptm.h
index f038ba6981f..85677adc800 100644
--- a/src/emu/machine/6840ptm.h
+++ b/src/emu/machine/6840ptm.h
@@ -6,18 +6,19 @@
***************************************************************************/
+#pragma once
+
#ifndef __6840PTM_H__
#define __6840PTM_H__
-#include "devlegcy.h"
+#include "emu.h"
+
/***************************************************************************
- MACROS / CONSTANTS
+ DEVICE CONFIGURATION MACROS
***************************************************************************/
-DECLARE_LEGACY_DEVICE(PTM6840, ptm6840);
-
#define MDRV_PTM6840_ADD(_tag, _config) \
MDRV_DEVICE_ADD(_tag, PTM6840, 0) \
MDRV_DEVICE_CONFIG(_config)
@@ -27,18 +28,145 @@ DECLARE_LEGACY_DEVICE(PTM6840, ptm6840);
TYPE DEFINITIONS
***************************************************************************/
+// ======================> ptm6840_interface
-typedef struct _ptm6840_interface ptm6840_interface;
-struct _ptm6840_interface
+struct ptm6840_interface
{
- double internal_clock;
- double external_clock[3];
+ double m_internal_clock;
+ double m_external_clock[3];
- devcb_write8 out_func[3]; // function to call when output[idx] changes
- devcb_write_line irq_func; // function called if IRQ line changes
+ devcb_write8 m_out_func[3]; // function to call when output[idx] changes
+ devcb_write_line m_irq_func; // function called if IRQ line changes
};
+
+// ======================> ptm6840_device_config
+
+class ptm6840_device_config : public device_config,
+ public ptm6840_interface
+{
+ friend class ptm6840_device;
+
+ // construction/destruction
+ ptm6840_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock);
+
+public:
+ // allocators
+ static device_config *static_alloc_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock);
+ virtual device_t *alloc_device(running_machine &machine) const;
+
+protected:
+ // device_config overrides
+ virtual void device_config_complete();
+};
+
+
+
+// ======================> ptm6840_device
+
+class ptm6840_device : public device_t
+{
+ friend class ptm6840_device_config;
+
+ // construction/destruction
+ ptm6840_device(running_machine &_machine, const ptm6840_device_config &_config);
+
+public:
+
+ int ptm6840_get_status(int clock); // get whether timer is enabled
+ int ptm6840_get_irq(); // get IRQ state
+ UINT16 ptm6840_get_count(int counter); // get counter value
+ void ptm6840_set_ext_clock(int counter, double clock); // set clock frequency
+ int ptm6840_get_ext_clock(int counter); // get clock frequency
+
+ void ptm6840_set_g1(UINT32 offset, UINT8 data); // set gate1 state
+ void ptm6840_set_g2(UINT32 offset, UINT8 data); // set gate2 state
+ void ptm6840_set_g3(UINT32 offset, UINT8 data); // set gate3 state
+ void ptm6840_set_c1(UINT32 offset, UINT8 data); // set clock1 state
+ void ptm6840_set_c2(UINT32 offset, UINT8 data); // set clock2 state
+ void ptm6840_set_c3(UINT32 offset, UINT8 data); // set clock3 state
+
+ void ptm6840_write(UINT32 offset, UINT8 data);
+ UINT8 ptm6840_read(UINT32 offset);
+
+ void ptm6840_set_gate(int state, int idx);
+ void ptm6840_set_clock(int state, int idx);
+
+ void update_interrupts();
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+ virtual void device_post_load() { }
+ virtual void device_clock_changed() { }
+
+ static TIMER_CALLBACK( ptm6840_timer1_cb );
+ static TIMER_CALLBACK( ptm6840_timer2_cb );
+ static TIMER_CALLBACK( ptm6840_timer3_cb );
+
+private:
+
+ void subtract_from_counter(int counter, int count);
+ void ptm_tick(int counter, int count);
+
+ void ptm6840_timeout(int idx);
+
+ UINT16 compute_counter(int counter);
+ void reload_count(int idx);
+
+ enum
+ {
+ PTM_6840_CTRL1 = 0,
+ PTM_6840_CTRL2 = 1,
+ PTM_6840_STATUS = 1,
+ PTM_6840_MSBBUF1 = 2,
+ PTM_6840_LSB1 = 3,
+ PTM_6840_MSBBUF2 = 4,
+ PTM_6840_LSB2 = 5,
+ PTM_6840_MSBBUF3 = 6,
+ PTM_6840_LSB3 = 7,
+ };
+
+ double m_internal_clock;
+ double m_external_clock[3];
+
+ devcb_resolved_write8 m_out_func[3]; // function to call when output[idx] changes
+ devcb_resolved_write_line m_irq_func; // function called if IRQ line changes
+
+ UINT8 m_control_reg[3];
+ UINT8 m_output[3]; /* Output states */
+ UINT8 m_gate[3]; /* Input gate states */
+ UINT8 m_clk[3]; /* Clock states */
+ UINT8 m_enabled[3];
+ UINT8 m_mode[3];
+ UINT8 m_fired[3];
+ UINT8 m_t3_divisor;
+ UINT8 m_t3_scaler;
+ UINT8 m_IRQ;
+ UINT8 m_status_reg;
+ UINT8 m_status_read_since_int;
+ UINT8 m_lsb_buffer;
+ UINT8 m_msb_buffer;
+
+ /* Each PTM has 3 timers */
+ emu_timer *m_timer[3];
+
+ UINT16 m_latch[3];
+ UINT16 m_counter[3];
+
+ const ptm6840_device_config &m_config;
+
+ static const char *const opmode[];
+};
+
+
+// device type definition
+extern const device_type PTM6840;
+
+
+
/***************************************************************************
PROTOTYPES
***************************************************************************/