// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Wang PC PM-001B Medium-Resolution Video Controller emulation **********************************************************************/ #pragma once #ifndef __WANGPC_MVC__ #define __WANGPC_MVC__ #include "wangpc.h" #include "video/mc6845.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> wangpc_mvc_device class wangpc_mvc_device : public device_t, public device_wangpcbus_card_interface { public: // construction/destruction wangpc_mvc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); // optional information overrides virtual machine_config_constructor device_mconfig_additions() const override; // not really public MC6845_UPDATE_ROW( crtc_update_row ); DECLARE_WRITE_LINE_MEMBER( vsync_w ); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; // device_wangpcbus_card_interface overrides virtual uint16_t wangpcbus_mrdc_r(address_space &space, offs_t offset, uint16_t mem_mask) override; virtual void wangpcbus_amwc_w(address_space &space, offs_t offset, uint16_t mem_mask, uint16_t data) override; virtual uint16_t wangpcbus_iorc_r(address_space &space, offs_t offset, uint16_t mem_mask) override; virtual void wangpcbus_aiowc_w(address_space &space, offs_t offset, uint16_t mem_mask, uint16_t data) override; private: inline void set_irq(int state); required_device m_crtc; optional_shared_ptr m_video_ram; optional_shared_ptr m_char_ram; optional_shared_ptr m_bitmap_ram; uint8_t m_option; int m_irq; }; // device type definition extern const device_type WANGPC_MVC; #endif