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Angelo Salese
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@ -974,6 +974,8 @@ src/emu/machine/upd4701.c svneol=native#text/plain
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src/emu/machine/upd4701.h svneol=native#text/plain
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src/emu/machine/upd7201.c svneol=native#text/plain
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src/emu/machine/upd7201.h svneol=native#text/plain
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src/emu/machine/v3021.c svneol=native#text/plain
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src/emu/machine/v3021.h svneol=native#text/plain
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src/emu/machine/wd17xx.c svneol=native#text/plain
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src/emu/machine/wd17xx.h svneol=native#text/plain
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src/emu/machine/wd33c93.c svneol=native#text/plain
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190
src/emu/machine/v3021.c
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190
src/emu/machine/v3021.c
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/***************************************************************************
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v3021.c
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EM Microelectronic-Marin SA Ultra Low Power 32kHz CMOS RTC (DIP8)
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Serial Real Time Clock
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- very preliminary, borrowed from hard-coded PGM implementation.
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***************************************************************************/
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#include "emu.h"
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#include "machine/v3021.h"
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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// device type definition
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const device_type v3021 = &device_creator<v3021_device>;
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// rtc9701_device - constructor
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//-------------------------------------------------
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v3021_device::v3021_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: device_t(mconfig, v3021, "v3021", tag, owner, clock)
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{
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}
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void v3021_device::timer_callback()
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{
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static const UINT8 dpm[12] = { 0x31, 0x28, 0x31, 0x30, 0x31, 0x30, 0x31, 0x31, 0x30, 0x31, 0x30, 0x31 };
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int dpm_count;
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m_rtc.sec++;
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if((m_rtc.sec & 0x0f) >= 0x0a) { m_rtc.sec+=0x10; m_rtc.sec&=0xf0; }
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if((m_rtc.sec & 0xf0) >= 0x60) { m_rtc.min++; m_rtc.sec = 0; }
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if((m_rtc.min & 0x0f) >= 0x0a) { m_rtc.min+=0x10; m_rtc.min&=0xf0; }
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if((m_rtc.min & 0xf0) >= 0x60) { m_rtc.hour++; m_rtc.min = 0; }
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if((m_rtc.hour & 0x0f) >= 0x0a) { m_rtc.hour+=0x10; m_rtc.hour&=0xf0; }
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if((m_rtc.hour & 0xff) >= 0x24) { m_rtc.day++; m_rtc.wday<<=1; m_rtc.hour = 0; }
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if(m_rtc.wday & 0x80) { m_rtc.wday = 1; }
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if((m_rtc.day & 0x0f) >= 0x0a) { m_rtc.day+=0x10; m_rtc.day&=0xf0; }
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/* TODO: crude leap year support */
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dpm_count = (m_rtc.month & 0xf) + (((m_rtc.month & 0x10) >> 4)*10)-1;
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if(((m_rtc.year % 4) == 0) && m_rtc.month == 2)
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{
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if((m_rtc.day & 0xff) >= dpm[dpm_count]+1+1)
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{ m_rtc.month++; m_rtc.day = 0x01; }
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}
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else if((m_rtc.day & 0xff) >= dpm[dpm_count]+1){ m_rtc.month++; m_rtc.day = 0x01; }
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if((m_rtc.month & 0x0f) >= 0x0a) { m_rtc.month = 0x10; }
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if(m_rtc.month >= 0x13) { m_rtc.year++; m_rtc.month = 1; }
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if((m_rtc.year & 0x0f) >= 0x0a) { m_rtc.year+=0x10; m_rtc.year&=0xf0; }
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if((m_rtc.year & 0xf0) >= 0xa0) { m_rtc.year = 0; } //2000-2099 possible timeframe
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}
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TIMER_CALLBACK( v3021_device::rtc_inc_callback )
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{
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reinterpret_cast<v3021_device *>(ptr)->timer_callback();
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}
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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 v3021_device::device_validity_check(emu_options &options, const game_driver &driver) const
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{
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bool error = false;
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return error;
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void v3021_device::device_start()
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{
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/* let's call the timer callback every second */
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if(clock() >= XTAL_32_768kHz)
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machine().scheduler().timer_pulse(attotime::from_hz(clock() / XTAL_32_768kHz), FUNC(rtc_inc_callback), 0, (void *)this);
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system_time systime;
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machine().base_datetime(systime);
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m_rtc.day = ((systime.local_time.mday / 10)<<4) | ((systime.local_time.mday % 10) & 0xf);
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m_rtc.month = (((systime.local_time.month+1) / 10) << 4) | (((systime.local_time.month+1) % 10) & 0xf);
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m_rtc.wday = 1 << systime.local_time.weekday;
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m_rtc.year = (((systime.local_time.year % 100)/10)<<4) | ((systime.local_time.year % 10) & 0xf);
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m_rtc.hour = ((systime.local_time.hour / 10)<<4) | ((systime.local_time.hour % 10) & 0xf);
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m_rtc.min = ((systime.local_time.minute / 10)<<4) | ((systime.local_time.minute % 10) & 0xf);
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m_rtc.sec = ((systime.local_time.second / 10)<<4) | ((systime.local_time.second % 10) & 0xf);
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void v3021_device::device_reset()
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{
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}
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//**************************************************************************
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// READ/WRITE HANDLERS
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//**************************************************************************
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READ8_MEMBER( v3021_device::read )
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{
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UINT8 calr = (m_cal_val & m_cal_mask) ? 1 : 0;
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m_cal_mask <<= 1;
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return calr;
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}
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WRITE8_MEMBER( v3021_device::write )
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{
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//pgm_state *state = space->machine().driver_data<pgm_state>();
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//space->machine().base_datetime(state->m_systime);
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m_cal_com <<= 1;
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m_cal_com |= data & 1;
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++m_cal_cnt;
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if (m_cal_cnt == 4)
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{
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m_cal_mask = 1;
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m_cal_val = 1;
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m_cal_cnt = 0;
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switch (m_cal_com & 0xf)
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{
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case 1: case 3: case 5: case 7: case 9: case 0xb: case 0xd:
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m_cal_val++;
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break;
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case 0:
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m_cal_val = (m_rtc.wday); //??
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break;
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case 2: //Hours
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m_cal_val = (m_rtc.hour);
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break;
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case 4: //Seconds
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m_cal_val = (m_rtc.sec);
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break;
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case 6: //Month
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m_cal_val = (m_rtc.month); //?? not bcd in MVS
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break;
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case 8:
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m_cal_val = 0; //Controls blinking speed, maybe milliseconds
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break;
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case 0xa: //Day
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m_cal_val = (m_rtc.day);
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break;
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case 0xc: //Minute
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m_cal_val = (m_rtc.min);
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break;
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case 0xe: //Year
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m_cal_val = (m_rtc.year % 100);
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break;
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case 0xf: //Load Date
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//space->machine().base_datetime(m_systime);
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break;
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}
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}
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}
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77
src/emu/machine/v3021.h
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77
src/emu/machine/v3021.h
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/***************************************************************************
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v3021.h
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EM Microelectronic-Marin SA Ultra Low Power 32kHz CMOS RTC (DIP8)
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Serial Real Time Clock
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***************************************************************************/
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#pragma once
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#ifndef __rtc9701DEV_H__
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#define __rtc9701DEV_H__
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//**************************************************************************
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// INTERFACE CONFIGURATION MACROS
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//**************************************************************************
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#define MCFG_V3021_ADD(_tag, _clock ) \
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MCFG_DEVICE_ADD(_tag, v3021, _clock) \
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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typedef struct
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{
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UINT8 sec, min, hour, day, wday, month, year;
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} rtc_regs_t;
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// ======================> v3021_device
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class v3021_device : public device_t
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{
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public:
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// construction/destruction
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v3021_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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// I/O operations
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DECLARE_WRITE8_MEMBER( write );
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DECLARE_READ8_MEMBER( read );
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void timer_callback();
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protected:
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// device-level overrides
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virtual bool device_validity_check(emu_options &options, const game_driver &driver) const;
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virtual void device_start();
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virtual void device_reset();
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inline UINT8 rtc_read(UINT8 offset);
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inline void rtc_write(UINT8 offset,UINT8 data);
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static TIMER_CALLBACK( rtc_inc_callback );
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UINT8 m_cal_mask,m_cal_com,m_cal_cnt,m_cal_val;
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rtc_regs_t m_rtc;
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};
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// device type definition
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extern const device_type v3021;
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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#endif
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