mirror of
https://github.com/holub/mame
synced 2025-10-06 09:00:04 +03:00
72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
/**********************************************************************
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Wang PC Low-Resolution Video Controller emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************/
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#pragma once
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#ifndef __WANGPC_LVC__
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#define __WANGPC_LVC__
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#include "emu.h"
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#include "machine/wangpcbus.h"
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#include "video/mc6845.h"
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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// ======================> wangpc_lvc_device
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class wangpc_lvc_device : public device_t,
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public device_wangpcbus_card_interface
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{
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public:
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// construction/destruction
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wangpc_lvc_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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// optional information overrides
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virtual machine_config_constructor device_mconfig_additions() const;
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// not really public
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void crtc_update_row(mc6845_device *device, bitmap_rgb32 &bitmap, const rectangle &cliprect, UINT16 ma, UINT8 ra, UINT16 y, UINT8 x_count, INT8 cursor_x, void *param);
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DECLARE_WRITE_LINE_MEMBER( vsync_w );
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protected:
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// device-level overrides
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virtual void device_start();
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virtual void device_reset();
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virtual void device_config_complete() { m_shortname = "wangpc_lvc"; }
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// device_wangpcbus_card_interface overrides
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virtual UINT16 wangpcbus_mrdc_r(address_space &space, offs_t offset, UINT16 mem_mask);
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virtual void wangpcbus_amwc_w(address_space &space, offs_t offset, UINT16 mem_mask, UINT16 data);
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virtual UINT16 wangpcbus_iorc_r(address_space &space, offs_t offset, UINT16 mem_mask);
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virtual void wangpcbus_aiowc_w(address_space &space, offs_t offset, UINT16 mem_mask, UINT16 data);
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private:
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inline void set_irq(int state);
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required_device<mc6845_device> m_crtc;
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optional_shared_ptr<UINT16> m_video_ram;
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rgb_t m_palette[16];
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UINT8 m_option;
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UINT16 m_scroll;
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int m_irq;
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};
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// device type definition
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extern const device_type WANGPC_LVC;
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#endif
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