mirror of
https://github.com/holub/mame
synced 2025-06-01 18:41:47 +03:00
72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
/*********************************************************************
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a2memexp.h
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Implementation of the Apple II Memory Expansion Card
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*********************************************************************/
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#ifndef __A2BUS_MEMEXP__
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#define __A2BUS_MEMEXP__
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#include "emu.h"
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#include "machine/a2bus.h"
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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class a2bus_memexp_device:
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public device_t,
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public device_a2bus_card_interface
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{
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public:
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// construction/destruction
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a2bus_memexp_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock);
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// optional information overrides
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virtual machine_config_constructor device_mconfig_additions() const;
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virtual const rom_entry *device_rom_region() const;
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bool m_isramfactor;
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UINT8 m_bankhior;
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int m_addrmask;
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protected:
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virtual void device_start();
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virtual void device_reset();
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// overrides of standard a2bus slot functions
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virtual UINT8 read_c0nx(address_space &space, UINT8 offset);
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virtual void write_c0nx(address_space &space, UINT8 offset, UINT8 data);
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virtual UINT8 read_cnxx(address_space &space, UINT8 offset);
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virtual UINT8 read_c800(address_space &space, UINT16 offset);
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private:
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UINT8 *m_rom;
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UINT8 m_regs[0x10];
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UINT8 m_ram[8*1024*1024];
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int m_wptr, m_liveptr;
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};
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class a2bus_memexpapple_device : public a2bus_memexp_device
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{
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public:
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a2bus_memexpapple_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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};
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class a2bus_ramfactor_device : public a2bus_memexp_device
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{
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public:
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a2bus_ramfactor_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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virtual const rom_entry *device_rom_region() const;
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};
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// device type definition
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extern const device_type A2BUS_MEMEXP;
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extern const device_type A2BUS_RAMFACTOR;
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#endif /* __A2BUS_MEMEXP__ */
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