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/***************************************************************************
h8_watchdog.h
H8 watchdog/timer
****************************************************************************
Copyright Olivier Galibert
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name 'MAME' nor the names of its contributors may be
used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY OLIVIER GALIBERT ''AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL OLIVIER GALIBERT BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***************************************************************************/
#ifndef __H8_WATCHDOG_H__
#define __H8_WATCHDOG_H__
#include "h8.h"
#include "h8_intc.h"
#define MCFG_H8_WATCHDOG_ADD( _tag, intc, irq, type ) \
MCFG_DEVICE_ADD( _tag, H8_WATCHDOG, 0 ) \
downcast<h8_watchdog_device *>(device)->set_info(intc, irq, type);
class h8_watchdog_device : public device_t {
public:
enum { B, H, S };
h8_watchdog_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
void set_info(const char *intc, int irq, int type);
UINT64 internal_update(UINT64 current_time);
DECLARE_READ16_MEMBER(wd_r);
DECLARE_WRITE16_MEMBER(wd_w);
DECLARE_READ16_MEMBER(rst_r);
DECLARE_WRITE16_MEMBER(rst_w);
protected:
virtual void device_start() override;
virtual void device_reset() override;
private:
enum {
TCSR_CKS = 0x07,
TCSR_NMI = 0x08,
TCSR_TME = 0x20,
TCSR_WT = 0x40,
TCSR_OVF = 0x80,
RST_RSTS = 0x20,
RST_RSTE = 0x40,
RST_RSTEO = 0x40,
RST_WRST = 0x80
};
static const int div_bh[8];
static const int div_s[8];
required_device<h8_device> cpu;
h8_intc_device *intc;
const char *intc_tag;
int irq;
int type;
UINT8 tcnt, tcsr, rst;
UINT64 tcnt_cycle_base;
void tcnt_update(UINT64 current_time = 0);
};
extern const device_type H8_WATCHDOG;
#endif
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