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-rw-r--r--src/devices/bus/a7800/cpuwiz.h74
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diff --git a/src/devices/bus/a7800/cpuwiz.h b/src/devices/bus/a7800/cpuwiz.h
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+// license:BSD-3-Clause
+// copyright-holders:Fabio Priuli
+#ifndef __A78_CPUWIZ_H
+#define __A78_CPUWIZ_H
+
+#include "a78_slot.h"
+#include "rom.h"
+
+
+// ======================> a78_versaboard_device
+
+class a78_versaboard_device : public a78_rom_sg_device
+{
+public:
+ // construction/destruction
+ a78_versaboard_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);
+ a78_versaboard_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+
+ // reading and writing
+ virtual DECLARE_READ8_MEMBER(read_40xx);
+ virtual DECLARE_WRITE8_MEMBER(write_40xx);
+
+protected:
+ int m_ram_bank;
+};
+
+
+// ======================> a78_megacart_device
+
+class a78_megacart_device : public a78_versaboard_device
+{
+public:
+ // construction/destruction
+ a78_megacart_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // reading and writing
+ virtual DECLARE_WRITE8_MEMBER(write_40xx);
+};
+
+
+// VersaBoard variants of the standard carts + POKEY at 0x0450!
+
+// ======================> a78_rom_p450_vb_device
+
+class a78_rom_p450_vb_device : public a78_versaboard_device
+{
+public:
+ // construction/destruction
+ a78_rom_p450_vb_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // device-level overrides
+ virtual machine_config_constructor device_mconfig_additions() const;
+
+ // reading and writing
+ virtual DECLARE_READ8_MEMBER(read_04xx) { if (offset >= 0x50 && offset < 0x60) return m_pokey450->read(space, offset & 0x0f); else return 0xff; }
+ virtual DECLARE_WRITE8_MEMBER(write_04xx) { if (offset >= 0x50 && offset < 0x60) m_pokey450->write(space, offset & 0x0f, data); }
+
+protected:
+ required_device<pokey_device> m_pokey450;
+};
+
+
+
+// device type definition
+extern const device_type A78_ROM_VERSABOARD;
+extern const device_type A78_ROM_MEGACART;
+
+extern const device_type A78_ROM_P450_VB;
+
+#endif