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-rw-r--r--src/devices/bus/megadrive/jcart.h84
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diff --git a/src/devices/bus/megadrive/jcart.h b/src/devices/bus/megadrive/jcart.h
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+++ b/src/devices/bus/megadrive/jcart.h
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+// 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