Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-23 08:49:55 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

Added proper RTC support to the ST-V driver [Angelo Salese]

Browse Source
This commit is contained in:
Angelo Salese 2010-06-04 15:02:39 +00:00
parent 92d89f1516
commit 11e9b120c9
1 changed files with 93 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

107
src/mame/drivers/stv.c
View File

@ -249,6 +249,8 @@ attotime minit_boost_timeslice, sinit_boost_timeslice;
//static int scanline;
static emu_timer *stv_rtc_timer;
/*A-Bus IRQ checks,where they could be located these?*/
#define ABUSIRQ(_irq_,_vector_) \
@ -625,13 +627,13 @@ static void stv_SMPC_w8 (const address_space *space, int offset, UINT8 data)
if(LOG_SMPC) logerror ("SMPC: Status Acquire\n");
smpc_ram[0x5f]=0x10;
smpc_ram[0x21] = (0x80) | ((NMI_reset & 1) << 6);
smpc_ram[0x23] = DectoBCD(systime.local_time.year /100);
smpc_ram[0x25] = DectoBCD(systime.local_time.year %100);
smpc_ram[0x27] = (systime.local_time.weekday << 4) | (systime.local_time.month+1);
smpc_ram[0x29] = DectoBCD(systime.local_time.mday);
smpc_ram[0x2b] = DectoBCD(systime.local_time.hour);
smpc_ram[0x2d] = DectoBCD(systime.local_time.minute);
smpc_ram[0x2f] = DectoBCD(systime.local_time.second);
//smpc_ram[0x23] = DectoBCD(systime.local_time.year /100);
//smpc_ram[0x25] = DectoBCD(systime.local_time.year %100);
//smpc_ram[0x27] = (systime.local_time.weekday << 4) | (systime.local_time.month+1);
//smpc_ram[0x29] = DectoBCD(systime.local_time.mday);
//smpc_ram[0x2b] = DectoBCD(systime.local_time.hour);
//smpc_ram[0x2d] = DectoBCD(systime.local_time.minute);
//smpc_ram[0x2f] = DectoBCD(systime.local_time.second);
smpc_ram[0x31]=0x00; //?
@ -2359,13 +2361,6 @@ DRIVER_INIT ( stv )
memory_install_write32_handler(cputag_get_address_space(machine, "slave", ADDRESS_SPACE_PROGRAM), 0x60ffc44, 0x60ffc47, 0, 0, w60ffc44_write );
memory_install_write32_handler(cputag_get_address_space(machine, "slave", ADDRESS_SPACE_PROGRAM), 0x60ffc48, 0x60ffc4b, 0, 0, w60ffc48_write );
smpc_ram[0x23] = DectoBCD(systime.local_time.year /100);
smpc_ram[0x25] = DectoBCD(systime.local_time.year %100);
smpc_ram[0x27] = (systime.local_time.weekday << 4) | (systime.local_time.month+1);
smpc_ram[0x29] = DectoBCD(systime.local_time.mday);
smpc_ram[0x2b] = DectoBCD(systime.local_time.hour);
smpc_ram[0x2d] = DectoBCD(systime.local_time.minute);
smpc_ram[0x2f] = DectoBCD(systime.local_time.second);
smpc_ram[0x31] = 0x00; //CTG1=0 CTG0=0 (correct??)
// smpc_ram[0x33] = input_port_read(machine, "FAKE");
smpc_ram[0x5f] = 0x10;
@ -2521,8 +2516,80 @@ static const scsp_interface scsp_config =
scsp_irq
};
static TIMER_CALLBACK(stv_rtc_increment)
{
static const UINT8 dpm[12] = { 0x31, 0x28, 0x31, 0x30, 0x31, 0x30, 0x31, 0x31, 0x30, 0x31, 0x30, 0x31 };
static int year_num, year_count;
/*
smpc_ram[0x23] = DectoBCD(systime.local_time.year /100);
smpc_ram[0x25] = DectoBCD(systime.local_time.year %100);
smpc_ram[0x27] = (systime.local_time.weekday << 4) | (systime.local_time.month+1);
smpc_ram[0x29] = DectoBCD(systime.local_time.mday);
smpc_ram[0x2b] = DectoBCD(systime.local_time.hour);
smpc_ram[0x2d] = DectoBCD(systime.local_time.minute);
smpc_ram[0x2f] = DectoBCD(systime.local_time.second);
*/
smpc_ram[0x2f]++;
/* seconds from 9 -> 10*/
if((smpc_ram[0x2f] & 0x0f) >= 0x0a) { smpc_ram[0x2f]+=0x10; smpc_ram[0x2f]&=0xf0; }
/* seconds from 59 -> 0 */
if((smpc_ram[0x2f] & 0xf0) >= 0x60) { smpc_ram[0x2d]++; smpc_ram[0x2f] = 0; }
/* minutes from 9 -> 10 */
if((smpc_ram[0x2d] & 0x0f) >= 0x0a) { smpc_ram[0x2d]+=0x10; smpc_ram[0x2d]&=0xf0; }
/* minutes from 59 -> 0 */
if((smpc_ram[0x2d] & 0xf0) >= 0x60) { smpc_ram[0x2b]++; smpc_ram[0x2d] = 0; }
/* hours from 9 -> 10 */
if((smpc_ram[0x2b] & 0x0f) >= 0x0a) { smpc_ram[0x2b]+=0x10; smpc_ram[0x2b]&=0xf0; }
/* hours from 23 -> 0 */
if((smpc_ram[0x2b] & 0xff) >= 0x24) { smpc_ram[0x29]++; smpc_ram[0x27]+=0x10; smpc_ram[0x2b] = 0; }
/* week day name sunday -> monday */
if((smpc_ram[0x27] & 0xf0) >= 0x70) { smpc_ram[0x27]&=0x0f; }
/* day number 9 -> 10 */
if((smpc_ram[0x29] & 0x0f) >= 0x0a) { smpc_ram[0x29]+=0x10; smpc_ram[0x29]&=0xf0; }
// year BCD to dec conversion (for the leap year stuff)
{
year_num = (smpc_ram[0x25] & 0xf);
for(year_count = 0; year_count < (smpc_ram[0x25] & 0xf0); year_count += 0x10)
year_num += 0xa;
year_num += (smpc_ram[0x23] & 0xf)*0x64;
for(year_count = 0; year_count < (smpc_ram[0x23] & 0xf0); year_count += 0x10)
year_num += 0x3e8;
}
/* month +1 check */
/* the RTC have a range of 1980 - 2100, so we don't actually need to support the leap year special conditions */
if(((year_num % 4) == 0) && (smpc_ram[0x27] & 0xf) == 2)
{
if((smpc_ram[0x29] & 0xff) >= dpm[(smpc_ram[0x27] & 0xf)-1]+1+1)
{ smpc_ram[0x27]++; smpc_ram[0x29] = 0x01; }
}
else if((smpc_ram[0x29] & 0xff) >= dpm[(smpc_ram[0x27] & 0xf)-1]+1){ smpc_ram[0x27]++; smpc_ram[0x29] = 0x01; }
/* year +1 check */
if((smpc_ram[0x27] & 0x0f) > 12) { smpc_ram[0x25]++; smpc_ram[0x27] = (smpc_ram[0x27] & 0xf0) | 0x01; }
/* year from 9 -> 10 */
if((smpc_ram[0x25] & 0x0f) >= 0x0a) { smpc_ram[0x25]+=0x10; smpc_ram[0x25]&=0xf0; }
/* year from 99 -> 100 */
if((smpc_ram[0x25] & 0xf0) >= 0xa0) { smpc_ram[0x23]++; smpc_ram[0x25] = 0; }
// probably not SO precise, here just for reference ...
/* year from 999 -> 1000 */
//if((smpc_ram[0x23] & 0x0f) >= 0x0a) { smpc_ram[0x23]+=0x10; smpc_ram[0x23]&=0xf0; }
/* year from 9999 -> 0 */
//if((smpc_ram[0x23] & 0xf0) >= 0xa0) { smpc_ram[0x23] = 0; } //roll over
}
static MACHINE_START( stv )
{
mame_system_time systime;
mame_get_base_datetime(machine, &systime);
scsp_set_ram_base(devtag_get_device(machine, "scsp"), sound_ram);
// save states
@ -2550,6 +2617,16 @@ static MACHINE_START( stv )
stv_register_protection_savestates(machine); // machine/stvprot.c
add_exit_callback(machine, stvcd_exit);
smpc_ram[0x23] = DectoBCD(systime.local_time.year /100);
smpc_ram[0x25] = DectoBCD(systime.local_time.year %100);
smpc_ram[0x27] = (systime.local_time.weekday << 4) | (systime.local_time.month+1);
smpc_ram[0x29] = DectoBCD(systime.local_time.mday);
smpc_ram[0x2b] = DectoBCD(systime.local_time.hour);
smpc_ram[0x2d] = DectoBCD(systime.local_time.minute);
smpc_ram[0x2f] = DectoBCD(systime.local_time.second);
stv_rtc_timer = timer_alloc(machine, stv_rtc_increment, 0);
}
/*
@ -2763,6 +2840,8 @@ static MACHINE_RESET( stv )
vblank_out_timer = devtag_get_device(machine, "vbout_timer");
timer_device_adjust_oneshot(vblank_out_timer,video_screen_get_time_until_pos(machine->primary_screen, 0, 0), 0);
timer_device_adjust_oneshot(scan_timer, video_screen_get_time_until_pos(machine->primary_screen, 224, 352), 0);
timer_adjust_periodic(stv_rtc_timer, attotime_zero, 0, ATTOTIME_IN_SEC(1));
}