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+/**********************************************************************
+
+ Western Digital WDXT-GEN ISA XT MFM Hard Disk Controller
+
+ Copyright MESS Team.
+ Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************
+
+ Emulated here is the variant supplied with Amstrad PC1512/1640,
+ which has a custom BIOS and is coupled with a Tandom TM262 HDD.
+
+ chdman -createblankhd tandon_tm262.chd 615 4 17 512
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __WDXT_GEN__
+#define __WDXT_GEN__
+
+
+#include "emu.h"
+#include "cpu/mcs48/mcs48.h"
+#include "machine/isa.h"
+#include "machine/wd11c00_17.h"
+#include "machine/wd2010.h"
+#include "imagedev/harddriv.h"
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> wdxt_gen_device
+
+class wdxt_gen_device : public device_t,
+ public device_isa8_card_interface
+{
+public:
+ // construction/destruction
+ wdxt_gen_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // optional information overrides
+ virtual machine_config_constructor device_mconfig_additions() const;
+ virtual const rom_entry *device_rom_region() const;
+
+ // not really public
+ DECLARE_WRITE_LINE_MEMBER( irq5_w );
+ DECLARE_WRITE_LINE_MEMBER( drq3_w );
+ DECLARE_WRITE_LINE_MEMBER( mr_w );
+ DECLARE_READ8_MEMBER( rd322_r );
+ DECLARE_READ8_MEMBER( ram_r );
+ DECLARE_WRITE8_MEMBER( ram_w );
+ DECLARE_READ8_MEMBER( wd1015_t0_r );
+ DECLARE_READ8_MEMBER( wd1015_t1_r );
+ DECLARE_READ8_MEMBER( wd1015_p1_r );
+ DECLARE_WRITE8_MEMBER( wd1015_p1_w );
+ DECLARE_READ8_MEMBER( wd1015_p2_r );
+ DECLARE_WRITE8_MEMBER( wd1015_p2_w );
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+ virtual void device_config_complete() { m_shortname = "wdxt_gen"; }
+
+ // device_isa8_card_interface
+ virtual UINT8 dack_r(int line);
+ virtual void dack_w(int line, UINT8 data);
+
+private:
+ required_device<cpu_device> m_maincpu;
+ required_device<wd11c00_17_device> m_host;
+ required_device<wd2010_device> m_hdc;
+
+ UINT8 m_ram[0x800];
+
+ UINT8 m_hdc_addr;
+};
+
+
+// device type definition
+extern const device_type WDXT_GEN;
+
+#endif