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-rw-r--r--src/devices/bus/sdk85/memexp.h76
1 files changed, 76 insertions, 0 deletions
diff --git a/src/devices/bus/sdk85/memexp.h b/src/devices/bus/sdk85/memexp.h
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+++ b/src/devices/bus/sdk85/memexp.h
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+// license:BSD-3-Clause
+// copyright-holders:AJR
+
+#ifndef MAME_BUS_SDK85_MEMEXP_H
+#define MAME_BUS_SDK85_MEMEXP_H
+
+#pragma once
+
+#include "imagedev/cartrom.h"
+
+// ======================> device_sdk85_romexp_card_interface
+
+class device_sdk85_romexp_card_interface : public device_interface
+{
+ friend class sdk85_romexp_device;
+
+protected:
+ device_sdk85_romexp_card_interface(const machine_config &mconfig, device_t &device);
+
+ virtual u8 read_memory(offs_t offset) = 0;
+ virtual void write_memory(offs_t offset, u8 data) = 0;
+ virtual u8 read_io(offs_t offset) = 0;
+ virtual void write_io(offs_t offset, u8 data) = 0;
+
+ virtual u8 *get_rom_base(u32 size);
+};
+
+// ======================> sdk85_romexp_device
+
+class sdk85_romexp_device : public device_t,
+ public device_rom_image_interface,
+ public device_single_card_slot_interface<device_sdk85_romexp_card_interface>
+{
+public:
+ // construction/destruction
+ sdk85_romexp_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+ template <typename T>
+ sdk85_romexp_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock, T &&opts, const char *dflt)
+ : sdk85_romexp_device(mconfig, tag, owner, clock)
+ {
+ option_reset();
+ opts(*this);
+ set_default_option(dflt);
+ set_fixed(false);
+ }
+
+ static void rom_options(device_slot_interface &device);
+
+ u8 memory_r(offs_t offset);
+ void memory_w(offs_t offset, u8 data);
+ u8 io_r(offs_t offset);
+ void io_w(offs_t offset, u8 data);
+
+protected:
+ // device_t implementation
+ virtual void device_start() override ATTR_COLD;
+
+ // device_image_interface implementation
+ virtual std::pair<std::error_condition, std::string> call_load() override;
+ virtual void call_unload() override { }
+
+ virtual bool is_reset_on_load() const noexcept override { return true; }
+ virtual const char *image_interface() const noexcept override { return "sdk85_rom"; }
+ virtual const char *file_extensions() const noexcept override { return "bin"; }
+
+ // device_slot_interface implementation
+ virtual std::string get_default_card_software(get_default_card_software_hook &hook) const override;
+
+private:
+ device_sdk85_romexp_card_interface *m_dev;
+};
+
+// device type declaration
+DECLARE_DEVICE_TYPE(SDK85_ROMEXP, sdk85_romexp_device)
+
+#endif // MAME_BUS_SDK85_MEMEXP_H