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author | 2012-08-21 10:41:19 +0000 | |
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committer | 2012-08-21 10:41:19 +0000 | |
commit | 7285b359d259b2ae0fdf85096571c386ec8c991a (patch) | |
tree | a027aff57f1a255f9ec6cfd3b68cabe4b6683998 /src/mess/machine/a2memexp.h | |
parent | 67c425e90757876a6716b7867df30c0149912e74 (diff) |
Merge of MESS sources (no whatsnew)
Diffstat (limited to 'src/mess/machine/a2memexp.h')
-rw-r--r-- | src/mess/machine/a2memexp.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/mess/machine/a2memexp.h b/src/mess/machine/a2memexp.h new file mode 100644 index 00000000000..6fb1583d47a --- /dev/null +++ b/src/mess/machine/a2memexp.h @@ -0,0 +1,71 @@ +/********************************************************************* + + a2memexp.h + + Implementation of the Apple II Memory Expansion Card + +*********************************************************************/ + +#ifndef __A2BUS_MEMEXP__ +#define __A2BUS_MEMEXP__ + +#include "emu.h" +#include "machine/a2bus.h" + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +class a2bus_memexp_device: + public device_t, + public device_a2bus_card_interface +{ +public: + // construction/destruction + a2bus_memexp_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock); + + // optional information overrides + virtual machine_config_constructor device_mconfig_additions() const; + virtual const rom_entry *device_rom_region() const; + + bool m_isramfactor; + UINT8 m_bankhior; + int m_addrmask; + +protected: + virtual void device_start(); + virtual void device_reset(); + + // overrides of standard a2bus slot functions + virtual UINT8 read_c0nx(address_space &space, UINT8 offset); + virtual void write_c0nx(address_space &space, UINT8 offset, UINT8 data); + virtual UINT8 read_cnxx(address_space &space, UINT8 offset); + virtual UINT8 read_c800(address_space &space, UINT16 offset); + +private: + UINT8 *m_rom; + UINT8 m_regs[0x10]; + UINT8 m_ram[8*1024*1024]; + int m_wptr, m_liveptr; +}; + +class a2bus_memexpapple_device : public a2bus_memexp_device +{ +public: + a2bus_memexpapple_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); +}; + +class a2bus_ramfactor_device : public a2bus_memexp_device +{ +public: + a2bus_ramfactor_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + virtual const rom_entry *device_rom_region() const; +}; + +// device type definition +extern const device_type A2BUS_MEMEXP; +extern const device_type A2BUS_RAMFACTOR; + +#endif /* __A2BUS_MEMEXP__ */ + |