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Updated the ACIA 6850 device to no longer be legacy. [Harmony]

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Non-whatsnew note: I tested quizvadr, seems to still work properly.  Given how finicky gambling games are, I'm confident that it's actually okay this time around.
This commit is contained in:
Ryan Holtz 2010-08-26 03:30:50 +00:00
parent dc3a3e86b4
commit 553d18f646
2 changed files with 488 additions and 423 deletions
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725
src/emu/machine/6850acia.c
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File diff suppressed because it is too large Load Diff

186
src/emu/machine/6850acia.h
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@ -6,18 +6,19 @@
*********************************************************************/
#pragma once
#ifndef __ACIA6850_H__
#define __ACIA6850_H__
#include "devlegcy.h"
#include "emu.h"
/***************************************************************************
MACROS
EXTERNAL MACROS
***************************************************************************/
DECLARE_LEGACY_DEVICE(ACIA6850, acia6850);
#define ACIA6850_STATUS_RDRF 0x01
#define ACIA6850_STATUS_TDRE 0x02
#define ACIA6850_STATUS_DCD 0x04
@ -27,6 +28,12 @@ DECLARE_LEGACY_DEVICE(ACIA6850, acia6850);
#define ACIA6850_STATUS_PE 0x40
#define ACIA6850_STATUS_IRQ 0x80
/***************************************************************************
DEVICE CONFIGURATION MACROS
***************************************************************************/
#define MDRV_ACIA6850_ADD(_tag, _config) \
MDRV_DEVICE_ADD(_tag, ACIA6850, 0) \
MDRV_DEVICE_CONFIG(_config)
@ -39,25 +46,174 @@ DECLARE_LEGACY_DEVICE(ACIA6850, acia6850);
TYPE DEFINITIONS
***************************************************************************/
typedef struct _acia6850_interface acia6850_interface;
struct _acia6850_interface
// ======================> acia6850_interface
struct acia6850_interface
{
int tx_clock;
int rx_clock;
int m_tx_clock;
int m_rx_clock;
devcb_read_line in_rx_func;
devcb_write_line out_tx_func;
devcb_read_line m_in_rx_func;
devcb_write_line m_out_tx_func;
devcb_read_line in_cts_func;
devcb_write_line out_rts_func;
devcb_read_line in_dcd_func;
devcb_read_line m_in_cts_func;
devcb_write_line m_out_rts_func;
devcb_read_line m_in_dcd_func;
devcb_write_line out_irq_func;
devcb_write_line m_out_irq_func;
};
// ======================> acia6850_device_config
class acia6850_device_config : public device_config,
public acia6850_interface
{
friend class acia6850_device;
// construction/destruction
acia6850_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();
};
// ======================> acia6850_device
class acia6850_device : public device_t
{
friend class acia6850_device_config;
// construction/destruction
acia6850_device(running_machine &_machine, const acia6850_device_config &_config);
public:
void acia6850_tx_clock_in();
void acia6850_rx_clock_in();
void acia6850_set_rx_clock(int clock);
void acia6850_set_tx_clock(int clock);
void acia6850_ctrl_w(UINT32 offset, UINT8 data);
UINT8 acia6850_stat_r(UINT32 offset);
void acia6850_data_w(UINT32 offset, UINT8 data);
UINT8 acia6850_data_r(UINT32 offset);
void tx_clock_in();
void rx_clock_in();
void set_rx_clock(int clock) { m_rx_clock = clock; }
void set_tx_clock(int clock) { m_tx_clock = clock; }
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( transmit_event_callback );
static TIMER_CALLBACK( receive_event_callback );
private:
void check_interrupts();
void tx_tick();
void transmit_event();
void rx_tick();
void receive_event();
enum serial_state
{
START,
DATA,
PARITY,
STOP,
STOP2,
};
enum parity_type
{
NONE,
ODD,
EVEN
};
devcb_resolved_read_line m_in_rx_func;
devcb_resolved_write_line m_out_tx_func;
devcb_resolved_read_line m_in_cts_func;
devcb_resolved_write_line m_out_rts_func;
devcb_resolved_read_line m_in_dcd_func;
devcb_resolved_write_line m_out_irq_func;
UINT8 m_ctrl;
UINT8 m_status;
UINT8 m_tdr;
UINT8 m_rdr;
UINT8 m_rx_shift;
UINT8 m_tx_shift;
UINT8 m_rx_counter;
UINT8 m_tx_counter;
int m_rx_clock;
int m_tx_clock;
int m_divide;
/* Counters */
int m_tx_bits;
int m_rx_bits;
int m_tx_parity;
int m_rx_parity;
/* TX/RX state */
int m_bits;
parity_type m_parity;
int m_stopbits;
int m_tx_int;
/* Signals */
int m_overrun;
int m_reset;
int m_rts;
int m_brk;
int m_first_reset;
int m_status_read;
serial_state m_rx_state;
serial_state m_tx_state;
int m_irq;
emu_timer *m_rx_timer;
emu_timer *m_tx_timer;
const acia6850_device_config &m_config;
static const int ACIA6850_DIVIDE[3];
static const int ACIA6850_WORD[8][3];
};
// device type definition
extern const device_type ACIA6850;
/***************************************************************************
FUNCTION PROTOTYPES
PROTOTYPES
***************************************************************************/
void acia6850_tx_clock_in(running_device *device) ATTR_NONNULL(1);