mirror of
https://github.com/holub/mame
synced 2025-04-21 07:52:35 +03:00
removed PD4990A_OLD device
This commit is contained in:
Michaël Banaan Ananas
parent
04ccc28928
commit
062e17036b
2
.gitattributes
vendored
2
.gitattributes
vendored
@ -2377,8 +2377,6 @@ src/emu/machine/pci.c svneol=native#text/plain
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src/emu/machine/pci.h svneol=native#text/plain
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src/emu/machine/pckeybrd.c svneol=native#text/plain
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src/emu/machine/pckeybrd.h svneol=native#text/plain
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src/emu/machine/pd4990a.c svneol=native#text/plain
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src/emu/machine/pd4990a.h svneol=native#text/plain
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src/emu/machine/pic8259.c svneol=native#text/plain
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src/emu/machine/pic8259.h svneol=native#text/plain
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src/emu/machine/pit8253.c svneol=native#text/plain
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@ -1072,15 +1072,6 @@ ifneq ($(filter PCKEYBRD,$(MACHINES)),)
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MACHINEOBJS += $(MACHINEOBJ)/pckeybrd.o
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endif
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#-------------------------------------------------
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#
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#@src/emu/machine/pd4990a.h,MACHINES += PD4990A_OLD
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#-------------------------------------------------
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ifneq ($(filter PD4990A_OLD,$(MACHINES)),)
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MACHINEOBJS += $(MACHINEOBJ)/pd4990a.o
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endif
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#-------------------------------------------------
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#
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#@src/emu/machine/pic8259.h,MACHINES += PIC8259
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@ -1,474 +0,0 @@
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/***************************************************************************
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NEC uPD4990A
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Serial I/O Calendar & Clock IC used in the
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NEO GEO and probably a couple of other machines.
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Completed by ElSemi.
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I haven't found any schematics for this device
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so I had to make some assumptions about how it works.
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The three input bits seem to be used for a serial protocol
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bit 0 - data
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bit 1 - clock
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bit 2 - command end (?)
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the commands I've found so far are:
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0x0 - ?? sent after 2
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0x1 - Reset the (probable) shift register used for output
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0x2 - Store the contents of the shift reg to the current date
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0x3 - Load Shift register with current date
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0x7 - Switch test bit every frame
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0x8 - Switch test bit every half-second
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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 "machine/pd4990a.h"
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/***************************************************************************
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CONSTANTS
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***************************************************************************/
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#define DATA_BIT 0x01
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#define CLOCK_BIT 0x02
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#define END_BIT 0x04
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/***************************************************************************
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INLINE FUNCTIONS
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***************************************************************************/
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INLINE UINT8 convert_to_bcd(int val)
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{
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return ((val / 10) << 4) | (val % 10);
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}
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const device_type UPD4990A_OLD = &device_creator<upd4990a_old_device>;
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upd4990a_old_device::upd4990a_old_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: device_t(mconfig, UPD4990A_OLD, "NEC uPD4990A", tag, owner, clock, "upd4990a_old", __FILE__)
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{
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}
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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 upd4990a_old_device::device_config_complete()
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{
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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 upd4990a_old_device::device_start()
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{
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system_time curtime, *systime = &curtime;
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machine().current_datetime(curtime);
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#if 0
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m_seconds = 0x00;
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m_minutes = 0x00;
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m_hours = 0x00;
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m_days = 0x09;
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m_month = 9;
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m_year = 0x73;
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m_weekday = 1;
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#endif
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/* HACK: load time counter from system time */
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m_seconds = convert_to_bcd(systime->local_time.second);
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m_minutes = convert_to_bcd(systime->local_time.minute);
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m_hours = convert_to_bcd(systime->local_time.hour);
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m_days = convert_to_bcd(systime->local_time.mday);
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m_month = systime->local_time.month + 1;
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m_year = ((((systime->local_time.year - 1900) % 100) / 10) << 4) | ((systime->local_time.year - 1900) % 10);
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m_weekday = systime->local_time.weekday;
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/* register for state saving */
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save_item(NAME(m_seconds));
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save_item(NAME(m_minutes));
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save_item(NAME(m_hours));
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save_item(NAME(m_days));
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save_item(NAME(m_month));
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save_item(NAME(m_year));
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save_item(NAME(m_weekday));
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save_item(NAME(m_shiftlo));
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save_item(NAME(m_shifthi));
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save_item(NAME(m_retraces));
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save_item(NAME(m_testwaits));
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save_item(NAME(m_maxwaits));
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save_item(NAME(m_testbit));
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save_item(NAME(m_outputbit));
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save_item(NAME(m_bitno));
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save_item(NAME(m_reading));
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save_item(NAME(m_writing));
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save_item(NAME(m_clock_line));
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save_item(NAME(m_command_line));
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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 upd4990a_old_device::device_reset()
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{
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m_shiftlo = 0;
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m_shifthi = 0;
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m_retraces = 0;
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m_testwaits = 0;
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m_maxwaits = 1;
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m_testbit = 0;
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m_outputbit = 0;
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m_bitno = 0;
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m_reading = 0;
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m_writing = 0;
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m_clock_line = 0;
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m_command_line = 0;
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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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increment_month
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-------------------------------------------------*/
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void upd4990a_old_device::increment_month()
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{
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m_month++;
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if (m_month == 13)
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{
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m_month = 1;
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m_year++;
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if ((m_year & 0x0f) >= 10)
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{
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m_year &= 0xf0;
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m_year += 0x10;
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}
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if (m_year == 0xA0)
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m_year = 0;
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}
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}
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/*-------------------------------------------------
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increment_day
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-------------------------------------------------*/
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void upd4990a_old_device::increment_day()
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{
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int real_year;
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m_days++;
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if ((m_days & 0x0f) >= 10)
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{
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m_days &= 0xf0;
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m_days += 0x10;
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}
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m_weekday++;
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if (m_weekday == 7)
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m_weekday = 0;
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switch (m_month)
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{
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case 1: case 3: case 5: case 7: case 8: case 10: case 12:
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if (m_days == 0x32)
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{
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m_days = 1;
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increment_month();
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}
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break;
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case 2:
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real_year = (m_year >> 4) * 10 + (m_year & 0xf);
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if ((real_year % 4) && (!(real_year % 100) || (real_year % 400)))
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{
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if (m_days == 0x29)
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{
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m_days = 1;
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increment_month();
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}
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}
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else
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{
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if (m_days == 0x30)
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{
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m_days = 1;
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increment_month();
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}
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}
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break;
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case 4: case 6: case 9: case 11:
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if (m_days == 0x31)
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{
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m_days = 1;
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increment_month();
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}
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break;
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}
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}
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/*-------------------------------------------------
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addretrace
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-------------------------------------------------*/
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void upd4990a_old_device::addretrace()
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{
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++m_testwaits;
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if(m_testwaits >= m_maxwaits)
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{
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m_testbit ^= 1;
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m_testwaits = 0;
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}
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m_retraces++;
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if (m_retraces < 60)
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return;
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m_retraces = 0;
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m_seconds++;
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if ((m_seconds & 0x0f) < 10)
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return;
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m_seconds &= 0xf0;
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m_seconds += 0x10;
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if (m_seconds < 0x60)
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return;
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m_seconds = 0;
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m_minutes++;
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if ((m_minutes & 0x0f) < 10)
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return;
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m_minutes &= 0xf0;
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m_minutes += 0x10;
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if (m_minutes < 0x60)
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return;
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m_minutes = 0;
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m_hours++;
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if ((m_hours & 0x0f) < 10)
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return;
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m_hours &= 0xf0;
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m_hours += 0x10;
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if (m_hours < 0x24)
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return;
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m_hours = 0;
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increment_day();
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}
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/*-------------------------------------------------
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testbit_r
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-------------------------------------------------*/
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READ8_MEMBER( upd4990a_old_device::testbit_r )
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{
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return m_testbit;
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}
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/*-------------------------------------------------
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databit_r
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-------------------------------------------------*/
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READ8_MEMBER( upd4990a_old_device::databit_r )
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{
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return m_outputbit;
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}
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/*-------------------------------------------------
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readbit
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-------------------------------------------------*/
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void upd4990a_old_device::readbit()
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{
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switch (m_bitno)
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{
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case 0x00: case 0x01: case 0x02: case 0x03:
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case 0x04: case 0x05: case 0x06: case 0x07:
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m_outputbit = (m_seconds >> m_bitno) & 0x01;
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break;
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case 0x08: case 0x09: case 0x0a: case 0x0b:
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case 0x0c: case 0x0d: case 0x0e: case 0x0f:
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m_outputbit = (m_minutes >> (m_bitno - 0x08)) & 0x01;
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break;
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case 0x10: case 0x11: case 0x12: case 0x13:
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case 0x14: case 0x15: case 0x16: case 0x17:
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m_outputbit = (m_hours >> (m_bitno - 0x10)) & 0x01;
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break;
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case 0x18: case 0x19: case 0x1a: case 0x1b:
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case 0x1c: case 0x1d: case 0x1e: case 0x1f:
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m_outputbit = (m_days >> (m_bitno - 0x18)) & 0x01;
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break;
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case 0x20: case 0x21: case 0x22: case 0x23:
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m_outputbit = (m_weekday >> (m_bitno - 0x20)) & 0x01;
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break;
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case 0x24: case 0x25: case 0x26: case 0x27:
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m_outputbit = (m_month >> (m_bitno - 0x24)) & 0x01;
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break;
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case 0x28: case 0x29: case 0x2a: case 0x2b:
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case 0x2c: case 0x2d: case 0x2e: case 0x2f:
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m_outputbit = (m_year >> (m_bitno - 0x28)) & 0x01;
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break;
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case 0x30: case 0x31: case 0x32: case 0x33:
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//unknown
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break;
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}
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}
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/*-------------------------------------------------
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resetbitstream
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-------------------------------------------------*/
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void upd4990a_old_device::resetbitstream()
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{
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m_shiftlo = 0;
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m_shifthi = 0;
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m_bitno = 0;
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}
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/*-------------------------------------------------
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writebit
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-------------------------------------------------*/
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void upd4990a_old_device::writebit( UINT8 bit )
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{
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if (m_bitno <= 31) //low part
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m_shiftlo |= bit << m_bitno;
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else //high part
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m_shifthi |= bit << (m_bitno - 32);
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}
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/*-------------------------------------------------
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nextbit
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-------------------------------------------------*/
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void upd4990a_old_device::nextbit()
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{
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++m_bitno;
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if (m_reading)
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readbit();
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if (m_reading && m_bitno == 0x34)
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{
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m_reading = 0;
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resetbitstream();
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}
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}
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/*-------------------------------------------------
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getcommand
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-------------------------------------------------*/
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UINT8 upd4990a_old_device::getcommand()
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{
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//Warning: problems if the 4 bits are in different
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//parts, It's very strange that this case could happen.
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if(m_bitno <= 31)
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return m_shiftlo >> (m_bitno - 4);
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else
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return m_shifthi >> (m_bitno - 32 - 4);
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}
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/*-------------------------------------------------
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update_date
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-------------------------------------------------*/
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void upd4990a_old_device::update_date()
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{
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m_seconds = (m_shiftlo >> 0 ) & 0xff;
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m_minutes = (m_shiftlo >> 8 ) & 0xff;
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m_hours = (m_shiftlo >> 16) & 0xff;
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m_days = (m_shiftlo >> 24) & 0xff;
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m_weekday = (m_shifthi >> 0 ) & 0x0f;
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m_month = (m_shifthi >> 4 ) & 0x0f;
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m_year = (m_shifthi >> 8 ) & 0xff;
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}
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/*-------------------------------------------------
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process_command
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-------------------------------------------------*/
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void upd4990a_old_device::process_command()
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{
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switch(getcommand())
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{
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case 0x1: //load output register
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m_bitno = 0;
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if (m_reading)
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readbit(); //prepare first bit
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m_shiftlo = 0;
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m_shifthi = 0;
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break;
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case 0x2:
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m_writing = 0; //store register to current date
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update_date();
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break;
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case 0x3: //start reading
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m_reading = 1;
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break;
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case 0x7: //switch testbit every frame
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m_maxwaits = 1;
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break;
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case 0x8: //switch testbit every half-second
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m_maxwaits = 30;
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break;
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}
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resetbitstream();
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}
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/*-------------------------------------------------
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serial_control
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-------------------------------------------------*/
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void upd4990a_old_device::serial_control( UINT8 data )
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{
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//Check for command end
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if(m_command_line && !(data & END_BIT)) //end of command
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{
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process_command();
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}
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m_command_line = data & END_BIT;
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if(m_clock_line && !(data & CLOCK_BIT)) //clock lower edge
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{
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writebit(data & DATA_BIT);
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nextbit();
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}
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m_clock_line = data & CLOCK_BIT;
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}
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/*-------------------------------------------------
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control_16_w
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-------------------------------------------------*/
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WRITE16_MEMBER( upd4990a_old_device::control_16_w )
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{
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serial_control(data & 0x7);
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}
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@ -1,81 +0,0 @@
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/***************************************************************************
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|
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NEC uPD4990A
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|
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Serial I/O Calendar & Clock IC
|
||||
|
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***************************************************************************/
|
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#ifndef __PD4990A_OLD_H__
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#define __PD4990A_OLD_H__
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/***************************************************************************
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MACROS / CONSTANTS
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***************************************************************************/
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class upd4990a_old_device : public device_t
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{
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public:
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upd4990a_old_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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~upd4990a_old_device() {}
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|
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/* this should be refactored, once RTCs get unified */
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void addretrace();
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DECLARE_READ8_MEMBER( testbit_r );
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DECLARE_READ8_MEMBER( databit_r );
|
||||
DECLARE_WRITE16_MEMBER( control_16_w );
|
||||
|
||||
protected:
|
||||
// device-level overrides
|
||||
virtual void device_config_complete();
|
||||
virtual void device_start();
|
||||
virtual void device_reset();
|
||||
|
||||
private:
|
||||
// internal state
|
||||
int m_seconds; /* seconds BCD */
|
||||
int m_minutes; /* minutes BCD */
|
||||
int m_hours; /* hours BCD */
|
||||
int m_days; /* days BCD */
|
||||
int m_month; /* month Hexadecimal form */
|
||||
int m_year; /* year BCD */
|
||||
int m_weekday; /* weekday BCD */
|
||||
|
||||
UINT32 m_shiftlo;
|
||||
UINT32 m_shifthi;
|
||||
|
||||
int m_retraces; /* Assumes 60 retraces a second */
|
||||
int m_testwaits;
|
||||
int m_maxwaits; /* Switch test every frame*/
|
||||
int m_testbit; /* Pulses a bit in order to simulate test output */
|
||||
|
||||
int m_outputbit;
|
||||
int m_bitno;
|
||||
INT8 m_reading;
|
||||
INT8 m_writing;
|
||||
|
||||
int m_clock_line;
|
||||
int m_command_line; //??
|
||||
|
||||
void increment_month();
|
||||
void increment_day();
|
||||
void readbit();
|
||||
void resetbitstream();
|
||||
void writebit( UINT8 bit );
|
||||
void nextbit();
|
||||
UINT8 getcommand();
|
||||
void update_date();
|
||||
void process_command();
|
||||
void serial_control( UINT8 data );
|
||||
};
|
||||
|
||||
extern ATTR_DEPRECATED const device_type UPD4990A_OLD;
|
||||
|
||||
|
||||
#define MCFG_UPD4990A_OLD_ADD(_tag) \
|
||||
MCFG_DEVICE_ADD(_tag, UPD4990A_OLD, 0)
|
||||
|
||||
#endif /*__PD4990A_H__*/
|
||||
@ -435,7 +435,6 @@ MACHINES += NSCSI
|
||||
MACHINES += PCF8593
|
||||
MACHINES += PCI
|
||||
MACHINES += PCKEYBRD
|
||||
MACHINES += PD4990A_OLD
|
||||
MACHINES += PIC8259
|
||||
MACHINES += PIT8253
|
||||
MACHINES += PLA
|
||||
|
||||
@ -419,7 +419,6 @@ MACHINES += NSCSI
|
||||
MACHINES += PCCARD
|
||||
MACHINES += PCF8593
|
||||
MACHINES += PCKEYBRD
|
||||
MACHINES += PD4990A_OLD
|
||||
MACHINES += PIC8259
|
||||
MACHINES += PIT8253
|
||||
MACHINES += PLA
|
||||
|
||||
Loading…
Reference in New Issue
Block a user