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https://github.com/holub/mame
synced 2025-05-25 15:25:33 +03:00
converted mb3773 from a legacy device to a c++ device.
tidied up comments in at28c16
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smf-
parent
76c8372f25
commit
220497769e
@ -8,110 +8,150 @@
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Todo:
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Calculate the timeout from parameters.
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2009-06 Converted to be a device
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***************************************************************************/
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#include "emu.h"
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#include "mb3773.h"
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/***************************************************************************
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TYPE DEFINITIONS
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***************************************************************************/
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typedef struct _mb3773_state mb3773_state;
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struct _mb3773_state
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//**************************************************************************
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// DEVICE CONFIGURATION
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//**************************************************************************
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//-------------------------------------------------
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// mb3773_device_config - constructor
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//-------------------------------------------------
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mb3773_device_config::mb3773_device_config( const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock ) :
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device_config( mconfig, static_alloc_device_config, "MB3773", tag, owner, clock)
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{
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emu_timer *watchdog_timer;
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UINT8 ck;
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};
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/***************************************************************************
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INLINE FUNCTIONS
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***************************************************************************/
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INLINE mb3773_state *get_safe_token(running_device *device)
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{
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assert(device != NULL);
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assert((device->type() == MB3773));
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return (mb3773_state *)downcast<legacy_device_base *>(device)->token();
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}
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/***************************************************************************
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IMPLEMENTATION
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***************************************************************************/
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/*-------------------------------------------------
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TIMER_CALLBACK( watchdog_timeout )
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-------------------------------------------------*/
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static TIMER_CALLBACK( watchdog_timeout )
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//-------------------------------------------------
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// static_alloc_device_config - allocate a new
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// configuration object
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//-------------------------------------------------
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device_config *mb3773_device_config::static_alloc_device_config( const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock )
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{
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machine->schedule_soft_reset();
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return global_alloc( mb3773_device_config( mconfig, tag, owner, clock ) );
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}
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/*-------------------------------------------------
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reset_timer
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-------------------------------------------------*/
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static void reset_timer( running_device *device )
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//-------------------------------------------------
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// alloc_device - allocate a new device object
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//-------------------------------------------------
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device_t *mb3773_device_config::alloc_device( running_machine &machine ) const
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{
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mb3773_state *mb3773 = get_safe_token(device);
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timer_adjust_oneshot(mb3773->watchdog_timer, ATTOTIME_IN_SEC( 5 ), 0);
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return auto_alloc( &machine, mb3773_device( machine, *this ) );
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}
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/*-------------------------------------------------
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mb3773_set_ck
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-------------------------------------------------*/
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WRITE8_DEVICE_HANDLER( mb3773_set_ck )
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//-------------------------------------------------
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// device_config_complete - perform any
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// operations now that the configuration is
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// complete
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//-------------------------------------------------
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void mb3773_device_config::device_config_complete()
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{
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mb3773_state *mb3773 = get_safe_token(device);
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if( data == 0 && mb3773->ck != 0 )
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{
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reset_timer(device);
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}
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mb3773->ck = data;
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}
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/*-------------------------------------------------
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DEVICE_START( mb3773 )
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-------------------------------------------------*/
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static DEVICE_START( mb3773 )
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//-------------------------------------------------
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// device_validity_check - perform validity checks
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// on this device
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//-------------------------------------------------
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bool mb3773_device_config::device_validity_check( const game_driver &driver ) const
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{
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mb3773_state *mb3773 = get_safe_token(device);
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/* create the timer */
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mb3773->watchdog_timer = timer_alloc(device->machine, watchdog_timeout, NULL);
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reset_timer(device);
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/* register for state saving */
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state_save_register_device_item(device, 0, mb3773->ck);
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return false;
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}
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/*-------------------------------------------------
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DEVICE_RESET( mb3773 )
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-------------------------------------------------*/
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static DEVICE_RESET( mb3773 )
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// mb3773_device - constructor
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//-------------------------------------------------
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mb3773_device::mb3773_device( running_machine &_machine, const mb3773_device_config &config ) :
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device_t( _machine, config ),
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m_config( config )
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{
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mb3773_state *mb3773 = get_safe_token(device);
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mb3773->ck = 0;
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}
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/*-------------------------------------------------
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DEVICE_GET_INFO( mb3773 )
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-------------------------------------------------*/
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static const char DEVTEMPLATE_SOURCE[] = __FILE__;
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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#define DEVTEMPLATE_ID(p,s) p##mb3773##s
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#define DEVTEMPLATE_FEATURES DT_HAS_START | DT_HAS_RESET
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#define DEVTEMPLATE_NAME "Fujistu MB3773"
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#define DEVTEMPLATE_FAMILY "Fujistu Power Supply Monitor"
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#include "devtempl.h"
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void mb3773_device::device_start()
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{
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m_watchdog_timer = timer_alloc( &m_machine, watchdog_timeout, this );
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reset_timer();
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state_save_register_device_item( this, 0, m_ck );
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}
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DEFINE_LEGACY_DEVICE(MB3773, mb3773);
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void mb3773_device::device_reset()
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{
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m_ck = 0;
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}
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//**************************************************************************
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// READ/WRITE HANDLERS
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//**************************************************************************
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WRITE_LINE_DEVICE_HANDLER( mb3773_set_ck )
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{
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downcast<mb3773_device *>( device )->set_ck( state );
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}
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void mb3773_device::set_ck( int state )
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{
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state &= 1;
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if( state == 0 && m_ck != 0 )
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{
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reset_timer();
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}
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m_ck = state;
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}
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//**************************************************************************
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// INTERNAL HELPERS
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//**************************************************************************
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void mb3773_device::reset_timer()
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{
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timer_adjust_oneshot( m_watchdog_timer, ATTOTIME_IN_SEC( 5 ), 0 );
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}
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TIMER_CALLBACK( mb3773_device::watchdog_timeout )
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{
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reinterpret_cast<mb3773_device *>(ptr)->m_machine.schedule_soft_reset();
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}
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const device_type MB3773 = mb3773_device_config::static_alloc_device_config;
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@ -6,26 +6,80 @@
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***************************************************************************/
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#pragma once
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#ifndef __MB3773_H__
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#define __MB3773_H__
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#include "devlegcy.h"
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/***************************************************************************
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MACROS / CONSTANTS
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***************************************************************************/
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DECLARE_LEGACY_DEVICE(MB3773, mb3773);
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//**************************************************************************
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// INTERFACE CONFIGURATION MACROS
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//**************************************************************************
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#define MDRV_MB3773_ADD(_tag) \
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MDRV_DEVICE_ADD(_tag, MB3773, 0)
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/***************************************************************************
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PROTOTYPES
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***************************************************************************/
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// ======================> mb3773_device_config
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extern WRITE8_DEVICE_HANDLER( mb3773_set_ck );
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class mb3773_device_config :
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public device_config
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{
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friend class mb3773_device;
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#endif /* __MB3773_H__ */
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// construction/destruction
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mb3773_device_config( const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock );
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public:
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// allocators
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static device_config *static_alloc_device_config( const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock );
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virtual device_t *alloc_device( running_machine &machine ) const;
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protected:
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// device_config overrides
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virtual void device_config_complete();
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virtual bool device_validity_check( const game_driver &driver ) const;
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};
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// ======================> mb3773_device
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class mb3773_device :
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public device_t
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{
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friend class mb3773_device_config;
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// construction/destruction
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mb3773_device( running_machine &_machine, const mb3773_device_config &config );
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public:
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// I/O operations
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void set_ck( int state );
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protected:
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// device-level overrides
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virtual void device_start();
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virtual void device_reset();
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// internal helpers
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static TIMER_CALLBACK( watchdog_timeout );
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void reset_timer();
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// internal state
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const mb3773_device_config &m_config;
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emu_timer *m_watchdog_timer;
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int m_ck;
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};
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// device type definition
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extern const device_type MB3773;
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//**************************************************************************
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// READ/WRITE HANDLERS
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//**************************************************************************
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WRITE_LINE_DEVICE_HANDLER( mb3773_set_ck );
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#endif
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@ -552,7 +552,7 @@ static WRITE32_HANDLER(control_w)
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COMBINE_DATA(&control);
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mb3773_set_ck(mb3773, 0, (control & 0x20) >> 5);
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mb3773_set_ck(mb3773, (control & 0x20) >> 5);
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#if 0
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if((p ^ control) & ~0x20)
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@ -1157,7 +1157,7 @@ static UINT8 *taitofx1_eeprom2 = NULL;
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static WRITE32_HANDLER( bank_coh1000t_w )
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{
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running_device *mb3773 = space->machine->device("mb3773");
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mb3773_set_ck(mb3773, 0, (data & 0x20) >> 5);
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mb3773_set_ck(mb3773, (data & 0x20) >> 5);
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verboselog( space->machine, 1, "bank_coh1000t_w( %08x, %08x, %08x )\n", offset, data, mem_mask );
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memory_set_bankptr(space->machine, "bank1", memory_region( space->machine, "user2" ) + ( ( data & 3 ) * 0x800000 ) );
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}
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