static READ16_HANDLER( calendar_r )
{
mame_system_time systime;
mame_get_base_datetime(space->machine, &systime);
switch (offset)
{
case 0:
return ((systime.local_time.second/10)<<4) + (systime.local_time.second%10);
case 1:
return ((systime.local_time.minute/10)<<4) + (systime.local_time.minute%10);
case 2:
return ((systime.local_time.hour/10)<<4) + (systime.local_time.hour%10);
case 3:
return systime.local_time.weekday;
case 4:
return ((systime.local_time.mday/10)<<4) + (systime.local_time.mday%10);
case 5:
return (systime.local_time.month + 1);
case 6:
return (((systime.local_time.year%100)/10)<<4) + (systime.local_time.year%10);
case 7:
default:
return 0; /* status? the other registers are read only when bit 0 is clear */
}
}
static DEVICE_START(timekeeper)
{
timekeeper_state *c = get_safe_token(device);
emu_timer *timer;
attotime duration;
mame_system_time systime;
/* validate some basic stuff */
assert(device != NULL);
// assert(device->static_config != NULL);
assert(device->inline_config == NULL);
assert(device->machine != NULL);
assert(device->machine->config != NULL);
mame_get_base_datetime(device->machine, &systime);
c->device = device;
c->control = 0;
c->seconds = make_bcd( systime.local_time.second );
c->minutes = make_bcd( systime.local_time.minute );
c->hours = make_bcd( systime.local_time.hour );
c->day = make_bcd( systime.local_time.weekday + 1 );
c->date = make_bcd( systime.local_time.mday );
c->month = make_bcd( systime.local_time.month + 1 );
c->year = make_bcd( systime.local_time.year % 100 );
c->century = make_bcd( systime.local_time.year / 100 );
c->data = auto_alloc_array( device->machine, UINT8, c->size );
c->default_data = device->region;
if (c->default_data != NULL)
{
assert( device->regionbytes == c->size );
}
state_save_register_device_item( device, 0, c->control );
state_save_register_device_item( device, 0, c->seconds );
state_save_register_device_item( device, 0, c->minutes );
state_save_register_device_item( device, 0, c->hours );
state_save_register_device_item( device, 0, c->day );
state_save_register_device_item( device, 0, c->date );
state_save_register_device_item( device, 0, c->month );
state_save_register_device_item( device, 0, c->year );
state_save_register_device_item( device, 0, c->century );
state_save_register_device_item_pointer( device, 0, c->data, c->size );
timer = timer_alloc( device->machine, timekeeper_tick, c );
duration = ATTOTIME_IN_SEC(1);
timer_adjust_periodic( timer, duration, 0, duration );
}
void timekeeper_init( int chip, int type, UINT8 *data )
{
mame_timer *timer;
mame_time duration;
mame_system_time systime;
struct timekeeper_chip *c;
if( chip >= MAX_TIMEKEEPER_CHIPS )
{
logerror( "timekeeper_init( %d ) invalid chip\n", chip );
return;
}
c = &timekeeper[ chip ];
c->type = type;
switch( c->type )
{
case TIMEKEEPER_M48T02:
c->offset_control = 0x7f8;
c->offset_seconds = 0x7f9;
c->offset_minutes = 0x7fa;
c->offset_hours = 0x7fb;
c->offset_day = 0x7fc;
c->offset_date = 0x7fd;
c->offset_month = 0x7fe;
c->offset_year = 0x7ff;
c->offset_century = -1;
c->offset_flags = -1;
c->size = 0x800;
break;
case TIMEKEEPER_M48T58:
c->offset_control = 0x1ff8;
c->offset_seconds = 0x1ff9;
c->offset_minutes = 0x1ffa;
c->offset_hours = 0x1ffb;
c->offset_day = 0x1ffc;
c->offset_date = 0x1ffd;
c->offset_month = 0x1ffe;
c->offset_year = 0x1fff;
c->offset_century = -1;
c->offset_flags = -1;
c->size = 0x2000;
break;
case TIMEKEEPER_MK48T08:
c->offset_control = 0x1ff8;
c->offset_seconds = 0x1ff9;
c->offset_minutes = 0x1ffa;
c->offset_hours = 0x1ffb;
c->offset_day = 0x1ffc;
c->offset_date = 0x1ffd;
c->offset_month = 0x1ffe;
c->offset_year = 0x1fff;
c->offset_century = 0x1ff1;
c->offset_flags = 0x1ff0;
c->size = 0x2000;
break;
}
if( data == NULL )
{
data = auto_malloc( c->size );
memset( data, 0xff, c->size );
}
c->data = data;
mame_get_base_datetime(Machine, &systime);
c->control = 0;
c->seconds = make_bcd( systime.local_time.second );
c->minutes = make_bcd( systime.local_time.minute );
c->hours = make_bcd( systime.local_time.hour );
c->day = make_bcd( systime.local_time.weekday + 1 );
c->date = make_bcd( systime.local_time.mday );
c->month = make_bcd( systime.local_time.month + 1 );
c->year = make_bcd( systime.local_time.year % 100 );
c->century = make_bcd( systime.local_time.year / 100 );
state_save_register_item( "timekeeper", chip, c->control );
state_save_register_item( "timekeeper", chip, c->seconds );
state_save_register_item( "timekeeper", chip, c->minutes );
state_save_register_item( "timekeeper", chip, c->hours );
state_save_register_item( "timekeeper", chip, c->day );
state_save_register_item( "timekeeper", chip, c->date );
state_save_register_item( "timekeeper", chip, c->month );
state_save_register_item( "timekeeper", chip, c->year );
state_save_register_item( "timekeeper", chip, c->century );
state_save_register_item_pointer( "timekeeper", chip, c->data, c->size );
timer = mame_timer_alloc( timekeeper_tick );
duration = make_mame_time( 1, 0 );
mame_timer_adjust( timer, duration, chip, duration );
}
void DS1302_CLK(UINT8 val)
{
if(val!=LastClk)
{
if(val) //Rising, shift in command
{
ICount++;
if(ICount==8) //Command start
{
mame_system_time systime;
mame_get_base_datetime(Machine, &systime);
switch(ShiftIn)
{
case 0x81: //Sec
ShiftOut=bcd(systime.local_time.second);
break;
case 0x83: //Min
ShiftOut=bcd(systime.local_time.minute);
break;
case 0x85: //Hour
ShiftOut=bcd(systime.local_time.hour);
break;
case 0x87: //Day
ShiftOut=bcd(systime.local_time.mday);
break;
case 0x89: //Month
ShiftOut=bcd(systime.local_time.month+1);
break;
case 0x8b: //weekday
ShiftOut=bcd(systime.local_time.weekday);
break;
case 0x8d: //Year
ShiftOut=bcd(systime.local_time.year%100);
break;
default:
ShiftOut=0x0;
}
if(ShiftIn>0xc0)
ShiftOut=SRAM[(ShiftIn>>1)&0x1f];
LastCmd=ShiftIn&0xff;
ICount++;
}
if(ICount==17 && !(LastCmd&1))
{
UINT8 val=(ShiftIn>>9)&0xff;
switch(LastCmd)
{
case 0x80: //Sec
break;
case 0x82: //Min
break;
case 0x84: //Hour
break;
case 0x86: //Day
break;
case 0x88: //Month
break;
case 0x8a: //weekday
break;
case 0x8c: //Year
break;
default:
ShiftOut=0x0;
}
if(LastCmd>0xc0)
{
SRAM[(LastCmd>>1)&0x1f]=val;
}
}