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-rw-r--r--src/devices/bus/megadrive/svp.h75
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diff --git a/src/devices/bus/megadrive/svp.h b/src/devices/bus/megadrive/svp.h
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+++ b/src/devices/bus/megadrive/svp.h
@@ -0,0 +1,75 @@
+// license:???
+// copyright-holders:Fabio Priuli,Pierpaolo Prazzoli,Grazvydas Ignotas
+#ifndef __MD_SVP_H
+#define __MD_SVP_H
+
+#include "md_slot.h"
+#include "cpu/ssp1601/ssp1601.h"
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> md_rom_svp_device
+
+class md_rom_svp_device : public device_t,
+ public device_md_cart_interface
+{
+public:
+ // construction/destruction
+ md_rom_svp_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_rom_svp_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+//protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual machine_config_constructor device_mconfig_additions() const;
+ virtual ioport_constructor device_input_ports() const;
+ virtual void set_bank_to_rom(const char *banktag, UINT32 offset);
+
+ required_device<device_t> m_svp;
+ required_ioport m_test_ipt;
+
+ // reading and writing
+ virtual DECLARE_READ16_MEMBER(read);
+ virtual DECLARE_WRITE16_MEMBER(write);
+ virtual DECLARE_READ16_MEMBER(read_a15);
+ virtual DECLARE_WRITE16_MEMBER(write_a15);
+
+ virtual int read_test();
+
+ virtual DECLARE_READ16_MEMBER(rom_read1);
+ virtual DECLARE_READ16_MEMBER(rom_read2);
+
+ virtual DECLARE_READ16_MEMBER(read_pm0);
+ virtual DECLARE_READ16_MEMBER(read_pm1);
+ virtual DECLARE_READ16_MEMBER(read_pm2);
+ virtual DECLARE_READ16_MEMBER(read_pm4);
+ virtual DECLARE_READ16_MEMBER(read_xst);
+ virtual DECLARE_READ16_MEMBER(read_pmc);
+ virtual DECLARE_READ16_MEMBER(read_al);
+ virtual DECLARE_WRITE16_MEMBER(write_pm0);
+ virtual DECLARE_WRITE16_MEMBER(write_pm1);
+ virtual DECLARE_WRITE16_MEMBER(write_pm2);
+ virtual DECLARE_WRITE16_MEMBER(write_pm4);
+ virtual DECLARE_WRITE16_MEMBER(write_xst);
+ virtual DECLARE_WRITE16_MEMBER(write_pmc);
+ virtual DECLARE_WRITE16_MEMBER(write_al);
+
+ UINT32 pm_io(int reg, int write, UINT32 d);
+
+ UINT32 m_pmac_read[6]; // read modes/addrs for PM0-PM5
+ UINT32 m_pmac_write[6]; // write ...
+ PAIR m_pmc;
+ UINT32 m_emu_status;
+ UINT16 m_xst; // external status, mapped at a15000 and a15002 on 68k side.
+ UINT16 m_xst2; // status of XST (bit1 set when 68k writes to XST)
+ UINT8 m_iram[0x800]; // IRAM (0-0x7ff)
+ UINT8 m_dram[0x20000]; // [0x20000];
+};
+
+
+// device type definition
+extern const device_type MD_ROM_SVP;
+
+#endif