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-rw-r--r--src/devices/bus/hp_dio/hp98543.h59
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diff --git a/src/devices/bus/hp_dio/hp98543.h b/src/devices/bus/hp_dio/hp98543.h
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+++ b/src/devices/bus/hp_dio/hp98543.h
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+// license:BSD-3-Clause
+// copyright-holders:Sven Schnelle
+
+#ifndef MAME_BUS_HPDIO_98543_H
+#define MAME_BUS_HPDIO_98543_H
+
+#pragma once
+
+#include "hp_dio.h"
+#include "video/topcat.h"
+#include "video/nereid.h"
+#include "machine/ram.h"
+
+class dio16_98543_device :
+ public device_t,
+ public device_dio16_card_interface,
+ public device_memory_interface
+{
+public:
+ dio16_98543_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+ DECLARE_READ16_MEMBER(rom_r);
+ DECLARE_WRITE16_MEMBER(rom_w);
+
+ DECLARE_READ16_MEMBER(ctrl_r);
+ DECLARE_WRITE16_MEMBER(ctrl_w);
+ DECLARE_READ16_MEMBER(vram_r);
+ DECLARE_WRITE16_MEMBER(vram_w);
+
+ required_device_array<topcat_device, 4> m_topcat;
+ required_device<nereid_device> m_nereid;
+
+ uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
+protected:
+ dio16_98543_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
+
+ virtual void device_start() override;
+ virtual void device_reset() override;
+
+ virtual void device_add_mconfig(machine_config &config) override;
+ virtual const tiny_rom_entry *device_rom_region() const override;
+
+ virtual space_config_vector memory_space_config() const override;
+private:
+ const address_space_config m_space_config;
+ void map(address_map &map);
+
+ static constexpr int m_h_pix = 1024;
+ static constexpr int m_v_pix = 400;
+
+ required_region_ptr<uint8_t> m_rom;
+ required_shared_ptr<uint8_t> m_vram;
+
+};
+
+// device type definition
+DECLARE_DEVICE_TYPE(HPDIO_98543, dio16_98543_device)
+
+#endif // MAME_BUS_HPDIO_98543_H