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// license:BSD-3-Clause
// copyright-holders:Barry Rodewald
/*
VIA VT82C496G "Green PC" system chipset
*/
#ifndef __VT82C496_H__
#define __VT82C496_H__
#include "emu.h"
#include "ram.h"
#define MCFG_VT82C496_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, VT82C496, 0)
#define MCFG_VT82C496_CPU( _tag ) \
vt82c496_device::static_set_cpu(*device, _tag);
#define MCFG_VT82C496_REGION( _tag ) \
vt82c496_device::static_set_region(*device, _tag);
class vt82c496_device : public device_t
{
public:
// construction/destruction
vt82c496_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
static void static_set_cpu(device_t &device, const char *tag) { dynamic_cast<vt82c496_device &>(device).m_cpu_tag = tag; }
static void static_set_region(device_t &device, const char *tag) { dynamic_cast<vt82c496_device &>(device).m_region_tag = tag; }
DECLARE_READ8_MEMBER(read);
DECLARE_WRITE8_MEMBER(write);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
private:
const char* m_cpu_tag;
const char* m_region_tag;
// cpu_device* m_maincpu;
address_space* m_space;
ram_device* m_ram;
uint8_t* m_rom;
uint8_t m_reg[0x100];
uint8_t m_reg_select;
void update_mem_c0(uint8_t data);
void update_mem_d0(uint8_t data);
void update_mem_e0(uint8_t data);
};
// device type definition
extern const device_type VT82C496;
#endif /* __VT82C496_H__ */
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