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Diffstat (limited to 'src/mess/machine/z88_ram.h')
-rw-r--r-- | src/mess/machine/z88_ram.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/mess/machine/z88_ram.h b/src/mess/machine/z88_ram.h new file mode 100644 index 00000000000..e87bb72ccc7 --- /dev/null +++ b/src/mess/machine/z88_ram.h @@ -0,0 +1,93 @@ +#pragma once + +#ifndef __Z88_RAM_H__ +#define __Z88_RAM_H__ + +#include "emu.h" +#include "machine/z88cart.h" + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> z88_32k_ram_device + +class z88_32k_ram_device : public device_t, + public device_z88cart_interface +{ +public: + // construction/destruction + z88_32k_ram_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + z88_32k_ram_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock); + +protected: + // device-level overrides + virtual void device_start(); + virtual void device_config_complete() { m_shortname = "z88_32k_ram"; } + + // z88cart_interface overrides + virtual DECLARE_READ8_MEMBER(read); + virtual DECLARE_WRITE8_MEMBER(write); + virtual UINT8* get_cart_base(); + virtual UINT32 get_cart_size() { return 0x8000; } + +protected: + // internal state + UINT8 * m_ram; +}; + +// ======================> z88_128k_ram_device + +class z88_128k_ram_device : public z88_32k_ram_device +{ +public: + // construction/destruction + z88_128k_ram_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + +protected: + // device-level overrides + virtual void device_config_complete() { m_shortname = "z88_128k_ram"; } + + // z88cart_interface overrides + virtual UINT32 get_cart_size() { return 0x20000; } +}; + +// ======================> z88_512k_ram_device + +class z88_512k_ram_device : public z88_32k_ram_device +{ +public: + // construction/destruction + z88_512k_ram_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + +protected: + // device-level overrides + virtual void device_config_complete() { m_shortname = "z88_512k_ram"; } + + // z88cart_interface overrides + virtual UINT32 get_cart_size() { return 0x80000; } +}; + +// ======================> z88_1024k_ram_device + +class z88_1024k_ram_device : public z88_32k_ram_device +{ +public: + // construction/destruction + z88_1024k_ram_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + +protected: + // device-level overrides + virtual void device_config_complete() { m_shortname = "z88_1024k_ram"; } + + // z88cart_interface overrides + virtual UINT32 get_cart_size() { return 0x100000; } +}; + +// device type definition +extern const device_type Z88_32K_RAM; +extern const device_type Z88_128K_RAM; +extern const device_type Z88_512K_RAM; +extern const device_type Z88_1024K_RAM; + +#endif /* __Z88_RAM_H__ */ |