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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
/***************************************************************************
Sun bwtwo monochrome video controller
***************************************************************************/
#ifndef MAME_BUS_SBUS_BWTWO_H
#define MAME_BUS_SBUS_BWTWO_H
#pragma once
#include "sbus.h"
class sbus_bwtwo_device : public device_t, public device_sbus_card_interface
{
public:
// construction/destruction
sbus_bwtwo_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
// device_t overrides
virtual const tiny_rom_entry *device_rom_region() const override;
virtual void device_add_mconfig(machine_config &config) override;
virtual void device_start() override;
// device_sbus_slot_interface overrides
virtual void install_device() override;
uint8_t regs_r(offs_t offset);
void regs_w(offs_t offset, uint8_t data);
uint32_t rom_r(offs_t offset);
uint8_t vram_r(offs_t offset);
void vram_w(offs_t offset, uint8_t data);
private:
uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
void mem_map(address_map &map) override;
required_memory_region m_rom;
std::unique_ptr<uint8_t[]> m_vram;
required_device<screen_device> m_screen;
uint32_t m_mono_lut[256][8];
};
DECLARE_DEVICE_TYPE(SBUS_BWTWO, sbus_bwtwo_device)
#endif // MAME_BUS_SBUS_BWTWO_H
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