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-rw-r--r--src/emu/bus/wangpc/lvc.h71
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diff --git a/src/emu/bus/wangpc/lvc.h b/src/emu/bus/wangpc/lvc.h
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+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ Wang PC Low-Resolution Video Controller emulation
+
+ Copyright MESS Team.
+ Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __WANGPC_LVC__
+#define __WANGPC_LVC__
+
+#include "emu.h"
+#include "wangpc.h"
+#include "video/mc6845.h"
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> wangpc_lvc_device
+
+class wangpc_lvc_device : public device_t,
+ public device_wangpcbus_card_interface
+{
+public:
+ // construction/destruction
+ wangpc_lvc_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // optional information overrides
+ virtual machine_config_constructor device_mconfig_additions() const;
+
+ // not really public
+ 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);
+ DECLARE_WRITE_LINE_MEMBER( vsync_w );
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+
+ // device_wangpcbus_card_interface overrides
+ virtual UINT16 wangpcbus_mrdc_r(address_space &space, offs_t offset, UINT16 mem_mask);
+ virtual void wangpcbus_amwc_w(address_space &space, offs_t offset, UINT16 mem_mask, UINT16 data);
+ virtual UINT16 wangpcbus_iorc_r(address_space &space, offs_t offset, UINT16 mem_mask);
+ virtual void wangpcbus_aiowc_w(address_space &space, offs_t offset, UINT16 mem_mask, UINT16 data);
+
+private:
+ inline void set_irq(int state);
+
+ required_device<mc6845_device> m_crtc;
+ optional_shared_ptr<UINT16> m_video_ram;
+
+ rgb_t m_palette[16];
+ UINT8 m_option;
+ UINT16 m_scroll;
+ int m_irq;
+};
+
+
+// device type definition
+extern const device_type WANGPC_LVC;
+
+
+#endif