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Diffstat (limited to 'src/devices/bus/megadrive/jcart.h')
-rw-r--r-- | src/devices/bus/megadrive/jcart.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/devices/bus/megadrive/jcart.h b/src/devices/bus/megadrive/jcart.h new file mode 100644 index 00000000000..c59f3af7572 --- /dev/null +++ b/src/devices/bus/megadrive/jcart.h @@ -0,0 +1,84 @@ +// license:BSD-3-Clause +// copyright-holders:Fabio Priuli +#ifndef __MD_JCART_H +#define __MD_JCART_H + +#include "md_slot.h" +#include "machine/i2cmem.h" + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> md_jcart_device + +class md_jcart_device : public device_t, + public device_md_cart_interface +{ +public: + // construction/destruction + md_jcart_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source); + md_jcart_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + // device-level overrides + virtual void device_start(); + virtual void device_reset(); + virtual ioport_constructor device_input_ports() const; + + // reading and writing + virtual DECLARE_READ16_MEMBER(read); + virtual DECLARE_WRITE16_MEMBER(write); + + required_ioport m_jcart3; + required_ioport m_jcart4; + +private: + UINT8 m_jcart_io_data[2]; +}; + +// ======================> md_seprom_codemast_device + +class md_seprom_codemast_device : public md_jcart_device +{ +public: + // construction/destruction + md_seprom_codemast_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source); + md_seprom_codemast_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + // device-level overrides + virtual void device_start(); + virtual void device_reset(); + virtual machine_config_constructor device_mconfig_additions() const; + + // reading and writing + virtual DECLARE_READ16_MEMBER(read); + virtual DECLARE_WRITE16_MEMBER(write); + + required_device<i2cmem_device> m_i2cmem; + +private: + UINT8 m_jcart_io_data[2]; + UINT8 m_i2c_mem, m_i2c_clk; +}; + +// ======================> md_seprom_mm96_device (same read/write as codemast, but different I2C type) + +class md_seprom_mm96_device : public md_seprom_codemast_device +{ +public: + // construction/destruction + md_seprom_mm96_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + // device-level overrides + virtual machine_config_constructor device_mconfig_additions() const; +}; + + + +// device type definition +extern const device_type MD_JCART; +extern const device_type MD_SEPROM_CODEMAST; +extern const device_type MD_SEPROM_MM96; + +#endif |