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Updated the 6522 VIA device to no longer be legacy. [Harmony]

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Not in whatsnew: Tested wcbowl, verified that wcbowl still has proper audio.
This commit is contained in:
Ryan Holtz 2010-08-22 20:06:42 +00:00
parent 11e42b025c
commit 3bc56f97b5
2 changed files with 725 additions and 575 deletions
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1109
src/emu/machine/6522via.c
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191
src/emu/machine/6522via.h
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@ -11,22 +11,29 @@
**********************************************************************/
#pragma once
#ifndef __6522VIA_H__
#define __6522VIA_H__
#include "devlegcy.h"
#include "emu.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MDRV_VIA6522_ADD(_tag, _clock, _intrf) \
MDRV_DEVICE_ADD(_tag, VIA6522, _clock) \
MDRV_DEVICE_CONFIG(_intrf)
/***************************************************************************
MACROS / CONSTANTS
***************************************************************************/
DECLARE_LEGACY_DEVICE(VIA6522, via6522);
#define MDRV_VIA6522_ADD(_tag, _clock, _intrf) \
MDRV_DEVICE_ADD(_tag, VIA6522, _clock) \
MDRV_DEVICE_CONFIG(_intrf)
#define VIA_PB 0
#define VIA_PA 1
#define VIA_DDRB 2
@ -49,25 +56,165 @@ DECLARE_LEGACY_DEVICE(VIA6522, via6522);
TYPE DEFINITIONS
***************************************************************************/
typedef struct _via6522_interface via6522_interface;
struct _via6522_interface
// ======================> z80dart_interface
struct via6522_interface
{
devcb_read8 in_a_func;
devcb_read8 in_b_func;
devcb_read_line in_ca1_func;
devcb_read_line in_cb1_func;
devcb_read_line in_ca2_func;
devcb_read_line in_cb2_func;
devcb_write8 out_a_func;
devcb_write8 out_b_func;
devcb_write_line out_ca1_func;
devcb_write_line out_cb1_func;
devcb_write_line out_ca2_func;
devcb_write_line out_cb2_func;
devcb_write_line irq_func;
devcb_read8 m_in_a_func;
devcb_read8 m_in_b_func;
devcb_read_line m_in_ca1_func;
devcb_read_line m_in_cb1_func;
devcb_read_line m_in_ca2_func;
devcb_read_line m_in_cb2_func;
devcb_write8 m_out_a_func;
devcb_write8 m_out_b_func;
devcb_write_line m_out_ca1_func;
devcb_write_line m_out_cb1_func;
devcb_write_line m_out_ca2_func;
devcb_write_line m_out_cb2_func;
devcb_write_line m_irq_func;
};
// ======================> z80dart_device_config
class via6522_device_config : public device_config,
public via6522_interface
{
friend class via6522_device;
// construction/destruction
via6522_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();
};
// ======================> via6522_device
class via6522_device : public device_t
{
friend class via6522_device_config;
friend class dart_channel;
// construction/destruction
via6522_device(running_machine &_machine, const via6522_device_config &_config);
public:
UINT8 reg_r(UINT8 offset);
void reg_w(UINT8 offset, UINT8 data);
void porta_w(UINT8 data) { m_in_a = data; }
UINT8 portb_r() { return m_in_b; }
void portb_w(UINT8 data) { m_in_b = data; }
UINT8 ca1_r() { return m_in_ca1; }
void ca1_w(UINT8 data);
UINT8 ca2_r() { return m_in_ca2; }
void ca2_w(UINT8 data);
UINT8 cb1_r() { return m_in_cb1; }
void cb1_w(UINT8 data);
UINT8 cb2_r() { return m_in_cb2; }
void cb2_w(UINT8 data);
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( t1_timeout_callback );
static TIMER_CALLBACK( t2_timeout_callback );
static TIMER_CALLBACK( shift_callback );
private:
attotime cycles_to_time(int c);
UINT32 time_to_cycles(attotime t);
UINT16 get_counter1_value();
void set_int(int data);
void clear_int(int data);
void shift();
void t1_timeout();
void t2_timeout();
devcb_resolved_read8 m_in_a_func;
devcb_resolved_read8 m_in_b_func;
devcb_resolved_read_line m_in_ca1_func;
devcb_resolved_read_line m_in_cb1_func;
devcb_resolved_read_line m_in_ca2_func;
devcb_resolved_read_line m_in_cb2_func;
devcb_resolved_write8 m_out_a_func;
devcb_resolved_write8 m_out_b_func;
devcb_resolved_write_line m_out_ca1_func;
devcb_resolved_write_line m_out_cb1_func;
devcb_resolved_write_line m_out_ca2_func;
devcb_resolved_write_line m_out_cb2_func;
devcb_resolved_write_line m_irq_func;
UINT8 m_in_a;
UINT8 m_in_ca1;
UINT8 m_in_ca2;
UINT8 m_out_a;
UINT8 m_out_ca2;
UINT8 m_ddr_a;
UINT8 m_in_b;
UINT8 m_in_cb1;
UINT8 m_in_cb2;
UINT8 m_out_b;
UINT8 m_out_cb2;
UINT8 m_ddr_b;
UINT8 m_t1cl;
UINT8 m_t1ch;
UINT8 m_t1ll;
UINT8 m_t1lh;
UINT8 m_t2cl;
UINT8 m_t2ch;
UINT8 m_t2ll;
UINT8 m_t2lh;
UINT8 m_sr;
UINT8 m_pcr;
UINT8 m_acr;
UINT8 m_ier;
UINT8 m_ifr;
emu_timer *m_t1;
attotime m_time1;
UINT8 m_t1_active;
emu_timer *m_t2;
attotime m_time2;
UINT8 m_t2_active;
emu_timer *m_shift_timer;
UINT8 m_shift_counter;
const via6522_device_config &m_config;
};
// device type definition
extern const device_type VIA6522;
/***************************************************************************
PROTOTYPES
***************************************************************************/