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px4: support clock reading & writing

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This commit is contained in:
Dirk Best 2014-11-03 21:08:44 +01:00
parent e90699883e
commit f4737e2a4e
1 changed files with 181 additions and 109 deletions
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94
src/mess/drivers/px4.c
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@ -21,6 +21,7 @@
#include "sound/speaker.h"
#include "bus/generic/slot.h"
#include "bus/generic/carts.h"
#include "coreutil.h"
#include "px4.lh"
@ -70,6 +71,7 @@ public:
m_swr(0),
m_one_sec_int_enabled(true), m_alarm_int_enabled(true), m_key_int_enabled(true),
m_key_status(0), m_interrupt_status(0),
m_time(), m_clock_state(0),
m_ear_last_state(0),
m_sio_pin(0), m_serial_rx(0), m_rs232_dcd(0), m_rs232_cts(0),
m_centronics_busy(0), m_centronics_perror(0)
@ -230,6 +232,9 @@ private:
UINT8 m_key_status;
UINT8 m_interrupt_status;
system_time m_time;
int m_clock_state;
// external cassette/barcode reader
int m_ear_last_state;
@ -553,6 +558,26 @@ READ8_MEMBER( px4_state::sior_r )
if (0)
logerror("%s: sior_r 0x%02x\n", machine().describe_context(), m_sior);
// reading clock?
if (m_clock_state > 0)
{
switch (m_clock_state++)
{
case 1: m_sior = (dec_2_bcd(m_time.local_time.year) >> 4) & 0xf; break;
case 2: m_sior = dec_2_bcd(m_time.local_time.year) & 0xf; break;
case 3: m_sior = dec_2_bcd(m_time.local_time.month + 1); break;
case 4: m_sior = dec_2_bcd(m_time.local_time.mday); break;
case 5: m_sior = dec_2_bcd(m_time.local_time.hour); break;
case 6: m_sior = dec_2_bcd(m_time.local_time.minute); break;
case 7: m_sior = dec_2_bcd(m_time.local_time.second); break;
case 8: m_sior = dec_2_bcd(m_time.local_time.weekday); break;
}
// done?
if (m_clock_state == 9)
m_clock_state = 0;
}
return m_sior;
}
@ -562,19 +587,55 @@ WRITE8_MEMBER( px4_state::sior_w )
if (0)
logerror("%s: sior_w (0x%02x)\n", machine().describe_context(), data);
// writing clock?
if (m_clock_state > 0)
{
struct tm *t = localtime(&m_time.time);
switch (m_clock_state++)
{
case 1:
{
int year = dec_2_bcd(m_time.local_time.year);
year = (year & 0xff0f) | ((data & 0xf) << 4);
t->tm_year = bcd_2_dec(year) - 1900;
}
break;
case 2:
{
int year = dec_2_bcd(m_time.local_time.year);
year = (year & 0xfff0) | (data & 0xf);
t->tm_year = bcd_2_dec(year) - 1900;
}
break;
case 3: t->tm_mon = bcd_2_dec(data & 0x7f) - 1; break;
case 4: t->tm_mday = bcd_2_dec(data & 0x7f); break;
case 5: t->tm_hour = bcd_2_dec(data & 0x7f); break;
case 6: t->tm_min = bcd_2_dec(data & 0x7f); break;
case 7: t->tm_sec = bcd_2_dec(data & 0x7f); break;
case 8: t->tm_wday = bcd_2_dec(data & 0x7f); break;
}
// update
m_time.set(mktime(t));
// done?
if (m_clock_state == 9)
m_clock_state = 0;
}
else
{
m_sior = data;
switch (data)
{
case 0x01:
if (VERBOSE)
logerror("7508 cmd: Power OFF\n");
break;
case 0x02:
if (VERBOSE)
logerror("7508 cmd: Read Status\n");
@ -609,7 +670,6 @@ WRITE8_MEMBER( px4_state::sior_w )
case 0x15: if (VERBOSE) logerror("7508 cmd: KB Repeat ON\n"); break;
case 0x06:
if (VERBOSE)
logerror("7508 cmd: KB Interrupt OFF\n");
@ -617,18 +677,27 @@ WRITE8_MEMBER( px4_state::sior_w )
break;
case 0x16:
if (VERBOSE)
logerror("7508 cmd: KB Interrupt ON\n");
m_key_int_enabled = true;
break;
case 0x07: if (VERBOSE) logerror("7508 cmd: Clock Read\n"); break;
case 0x17: if (VERBOSE) logerror("7508 cmd: Clock Write\n"); break;
case 0x07:
if (VERBOSE)
logerror("7508 cmd: Clock Read\n");
m_clock_state = 1;
break;
case 0x17:
if (VERBOSE)
logerror("7508 cmd: Clock Write\n");
m_clock_state = 1;
break;
case 0x08:
if (VERBOSE)
logerror("7508 cmd: Power Switch Read\n");
@ -642,7 +711,6 @@ WRITE8_MEMBER( px4_state::sior_w )
case 0x39: if (VERBOSE) logerror("7508 cmd: Alarm ON\n"); break;
case 0x0a:
if (VERBOSE)
logerror("7508 cmd: DIP Switch Read\n");
m_sior = ioport("dips")->read();
@ -654,7 +722,6 @@ WRITE8_MEMBER( px4_state::sior_w )
case 0x1c: if (VERBOSE) logerror("7508 cmd: 1 chr. Buffer\n"); break;
case 0x0d:
if (VERBOSE)
logerror("7508 cmd: 1 sec. Interrupt OFF\n");
@ -662,7 +729,6 @@ WRITE8_MEMBER( px4_state::sior_w )
break;
case 0x1d:
if (VERBOSE)
logerror("7508 cmd: 1 sec. Interrupt ON\n");
@ -670,7 +736,6 @@ WRITE8_MEMBER( px4_state::sior_w )
break;
case 0x0e:
if (VERBOSE)
logerror("7508 cmd: KB Clear\n");
@ -680,6 +745,7 @@ WRITE8_MEMBER( px4_state::sior_w )
case 0x0f: if (VERBOSE) logerror("7508 cmd: System Reset\n"); break;
}
}
}
//**************************************************************************
@ -1000,6 +1066,9 @@ TIMER_DEVICE_CALLBACK_MEMBER( px4_state::upd7508_1sec_callback )
m_isr |= INT0_7508;
gapnit_interrupt();
}
// update clock
m_time.set(m_time.time + 1);
}
INPUT_CHANGED_MEMBER( px4_state::key_callback )
@ -1163,6 +1232,9 @@ void px4_state::machine_start()
m_caps2_rom = memregion(region_tag.cpy(m_caps2->tag()).cat(GENERIC_ROM_REGION_TAG));
m_nvram->set_base(m_ram->pointer(), 0x10000);
// initialize clock
machine().base_datetime(m_time);
}
void px4_state::machine_reset()