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hp9845: cleanups & more info in 98035 driver

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This commit is contained in:
fulivi 2016-11-03 14:50:40 +01:00
parent 3594f410b2
commit 18d72a5cec
1 changed files with 72 additions and 22 deletions
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94
src/devices/bus/hp9845_io/98035.cpp
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@ -26,6 +26,54 @@
For further info on this module see also:
http://www.hp9825.com/html/real-time_clock.html
Here's what I know about the clock chip.
* Packaged in a 24-pin DIP
* Runs on a 2.4V NiCd battery
* Keeps time with a standard 32.768 kHz oscillator
* Drives a 3 1/2 digit LED display with 7-segment digits
* Multiplexes digits with a 32768 Hz / 64 clock
* Has 3 buttons to read/set time (READ, SET & CHG)
* Counts month, day, hour, minute & seconds (no year)
* Doesn't support leap years
* On Tony Duell's schematics the chip is marked "AC5954"
All my attempts to find something like a datasheet of this chip
failed.
This driver emulates the clock chip with a FSM that reacts to
"short" and "long" pressings of keys. Here's a summary of the FSM.
| State | Key pressed | New state | Display |
|-------+-------------+-----------+--------------------------------|
| OFF | | | Blank, no multiplexing |
| | Short READ | HHMM | |
| | Short SET | HH | |
| HHMM | | | "HH:mm" (Hours 1-12 and mins.) |
| | | | On real chip it probably |
| | | | returns to OFF after a couple |
| | | | of seconds. |
| | Long READ | SS | |
| SS | | | " :SS" (just seconds) |
| | Short SET | HH | |
| | Long SET | OFF | |
| | READ + CHG | | seconds++ |
| HH | | | "HH: A/P" (hours & AM/PM) |
| | Short SET | MIN | |
| | Long SET | OFF | |
| | READ + CHG | | hours++ |
| MIN | | | " :mm" (just minutes) |
| | Short SET | MON | |
| | Long SET | OFF | |
| | READ + CHG | | minutes++ |
| MON | | | "MM: " (just month) |
| | Short SET | DOM | |
| | Long SET | OFF | |
| | READ + CHG | | month++ |
| DOM | | | " :DD" (just day of month) |
| | Short SET | OFF | |
| | Long SET | OFF | |
| | READ + CHG | | day++ |
The main reference for this module is this manual:
HP, 98035A Real Time Clock Installation and Operation Manual
@ -35,7 +83,7 @@
#include "coreutil.h"
// Debugging
#define VERBOSE 1
#define VERBOSE 0
#define LOG(x) do { if (VERBOSE) logerror x; } while (0)
#define BIT_MASK(n) (1U << (n))
@ -514,13 +562,13 @@ void hp98035_io_card::regen_clock_image(void)
m_clock_state = CLOCK_OFF;
break;
}
logerror("St=%d segh=%d %02x:%02x:%02x\n" , m_clock_state , m_clock_segh , m_clock_digits[ 2 ] ,
m_clock_digits[ 1 ] , m_clock_digits[ 0 ]);
LOG(("St=%d segh=%d %02x:%02x:%02x\n" , m_clock_state , m_clock_segh , m_clock_digits[ 2 ] ,
m_clock_digits[ 1 ] , m_clock_digits[ 0 ]));
}
void hp98035_io_card::clock_short_press(void)
{
logerror("Short press:%u\n" , m_clock_keys);
LOG(("Short press:%u\n" , m_clock_keys));
bool regen = false;
int tmp;
@ -610,7 +658,7 @@ void hp98035_io_card::clock_short_press(void)
} else if (m_clock_keys == (KEY_CHG_MASK | KEY_READ_MASK)) {
tmp = get_clock_register(RTC_DAY);
tmp++;
if (tmp > gregorian_days_in_month(get_clock_register(RTC_MONTH) , 1)) {
if (tmp > gregorian_days_in_month(get_clock_register(RTC_MONTH) , 0)) {
tmp = 1;
}
set_clock_register(RTC_DAY , tmp);
@ -630,7 +678,7 @@ void hp98035_io_card::clock_short_press(void)
void hp98035_io_card::clock_long_press(void)
{
logerror("Long press:%u\n" , m_clock_keys);
LOG(("Long press:%u\n" , m_clock_keys));
bool regen = false;
@ -664,7 +712,9 @@ void hp98035_io_card::clock_long_press(void)
void hp98035_io_card::log_current_time(void)
{
logerror("Time = %d:%d:%d:%d:%d\n" , get_clock_register(RTC_MONTH) , get_clock_register(RTC_DAY) , get_clock_register(RTC_HOUR) , get_clock_register(RTC_MINUTE) , get_clock_register(RTC_SECOND));
LOG(("Time = %d:%d:%d:%d:%d\n" , get_clock_register(RTC_MONTH) ,
get_clock_register(RTC_DAY) , get_clock_register(RTC_HOUR) ,
get_clock_register(RTC_MINUTE) , get_clock_register(RTC_SECOND)));
}
void hp98035_io_card::rtc_clock_updated(int year, int month, int day, int day_of_week, int hour, int minute, int second)
@ -678,32 +728,32 @@ ROM_START(hp98035)
ROM_END
static ADDRESS_MAP_START(np_program_map , AS_PROGRAM , 8 , hp98035_io_card)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x000 , 0x7ff) AM_ROM AM_REGION("np" , 0)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x000 , 0x7ff) AM_ROM AM_REGION("np" , 0)
ADDRESS_MAP_END
static ADDRESS_MAP_START(np_io_map , AS_IO , 8 , hp98035_io_card)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0 , 0x0) AM_WRITE(ram_addr_w)
AM_RANGE(0x1 , 0x1) AM_READ(ram_data_r)
AM_RANGE(0x2 , 0x2) AM_WRITE(ram_addr_data_w)
AM_RANGE(0x3 , 0x3) AM_WRITE(ram_data_w)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0 , 0x0) AM_WRITE(ram_addr_w)
AM_RANGE(0x1 , 0x1) AM_READ(ram_data_r)
AM_RANGE(0x2 , 0x2) AM_WRITE(ram_addr_data_w)
AM_RANGE(0x3 , 0x3) AM_WRITE(ram_data_w)
AM_RANGE(0x5 , 0x5) AM_WRITE(clock_key_w)
AM_RANGE(0x7 , 0x7) AM_READ(clock_digit_r)
AM_RANGE(0x8 , 0x8) AM_WRITE(odr_w)
AM_RANGE(0x9 , 0x9) AM_READ(idr_r)
AM_RANGE(0xa , 0xa) AM_READ(np_status_r)
AM_RANGE(0x8 , 0x8) AM_WRITE(odr_w)
AM_RANGE(0x9 , 0x9) AM_READ(idr_r)
AM_RANGE(0xa , 0xa) AM_READ(np_status_r)
AM_RANGE(0xb , 0xb) AM_WRITE(clear_np_irq_w)
AM_RANGE(0xc , 0xc) AM_READ(clock_mux_r)
AM_RANGE(0xc , 0xc) AM_READ(clock_mux_r)
AM_RANGE(0xd , 0xd) AM_WRITE(set_irq_w)
AM_RANGE(0xe , 0xe) AM_READWRITE(clr_inten_r , clr_inten_w)
ADDRESS_MAP_END
static MACHINE_CONFIG_FRAGMENT(hp98035)
MCFG_CPU_ADD("np" , HP_NANOPROCESSOR , XTAL_1MHz)
MCFG_CPU_PROGRAM_MAP(np_program_map)
MCFG_CPU_IO_MAP(np_io_map)
MCFG_HP_NANO_DC_CHANGED(WRITE8(hp98035_io_card , dc_w))
MCFG_CPU_ADD("np" , HP_NANOPROCESSOR , XTAL_1MHz)
MCFG_CPU_PROGRAM_MAP(np_program_map)
MCFG_CPU_IO_MAP(np_io_map)
MCFG_HP_NANO_DC_CHANGED(WRITE8(hp98035_io_card , dc_w))
MACHINE_CONFIG_END
const tiny_rom_entry *hp98035_io_card::device_rom_region() const