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+/***************************************************************************
+
+ CR-511-B CD-ROM drive
+
+ license: MAME, GPL-2.0+
+ copyright-holders: Dirk Best
+
+ CD-ROM drive with a custom MKE/Panasonic interface as used in the
+ Commodore CDTV and early SoundBlaster cards.
+
+ 1 _RESET 2 GND
+ 3 EFFK 4 SCCK
+ 5 SBCP 6 SCOR
+ 7 GND 8 GND
+ 9 C16M 10 GND
+ 11 _XAEN 12 GND
+ 13 EMPASIS 14 D0
+ 15 LRCK 16 DSCK
+ 17 _MUTE 18 GND
+ 19 _BUSY 20 _STCH
+ 21 _ENABLE 22 DRQ
+ 23 _HWR 24 GND
+ 25 _DTEN 26 _HRD
+ 27 _STEN 28 _CMD
+ 29 _EOP 30 GND
+ 31 DB7 32 GND
+ 33 DB6 34 DB5
+ 35 DB4 36 GND
+ 37 DB3 38 DB2
+ 39 DB1 40 DB0
+
+***************************************************************************/
+
+#pragma once
+
+#ifndef __CR511B_H__
+#define __CR511B_H__
+
+#include "emu.h"
+#include "imagedev/chd_cd.h"
+#include "sound/cdda.h"
+
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_CR511B_ADD(_tag) \
+ MCFG_DEVICE_ADD(_tag, CR511B, 0) \
+
+#define MCFG_CR511B_STCH_HANDLER(_devcb) \
+ devcb = &cr511b_device::set_stch_handler(*device, DEVCB2_##_devcb);
+
+#define MCFG_CR511B_STEN_HANDLER(_devcb) \
+ devcb = &cr511b_device::set_sten_handler(*device, DEVCB2_##_devcb);
+
+#define MCFG_CR511B_DRQ_HANDLER(_devcb) \
+ devcb = &cr511b_device::set_drq_handler(*device, DEVCB2_##_devcb);
+
+#define MCFG_CR511B_DTEN_HANDLER(_devcb) \
+ devcb = &cr511b_device::set_dten_handler(*device, DEVCB2_##_devcb);
+
+#define MCFG_CR511B_SCOR_HANDLER(_devcb) \
+ devcb = &cr511b_device::set_scor_handler(*device, DEVCB2_##_devcb);
+
+#define MCFG_CR511B_XAEN_HANDLER(_devcb) \
+ devcb = &cr511b_device::set_xaen_handler(*device, DEVCB2_##_devcb);
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> cr511b_device
+
+class cr511b_device : public device_t
+{
+public:
+ // construction/destruction
+ cr511b_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // callbacks
+ template<class _Object> static devcb2_base &set_stch_handler(device_t &device, _Object object)
+ { return downcast<cr511b_device &>(device).m_stch_handler.set_callback(object); }
+
+ template<class _Object> static devcb2_base &set_sten_handler(device_t &device, _Object object)
+ { return downcast<cr511b_device &>(device).m_sten_handler.set_callback(object); }
+
+ template<class _Object> static devcb2_base &set_drq_handler(device_t &device, _Object object)
+ { return downcast<cr511b_device &>(device).m_drq_handler.set_callback(object); }
+
+ template<class _Object> static devcb2_base &set_dten_handler(device_t &device, _Object object)
+ { return downcast<cr511b_device &>(device).m_dten_handler.set_callback(object); }
+
+ template<class _Object> static devcb2_base &set_scor_handler(device_t &device, _Object object)
+ { return downcast<cr511b_device &>(device).m_scor_handler.set_callback(object); }
+
+ template<class _Object> static devcb2_base &set_xaen_handler(device_t &device, _Object object)
+ { return downcast<cr511b_device &>(device).m_xaen_handler.set_callback(object); }
+
+ DECLARE_READ8_MEMBER( read );
+ DECLARE_WRITE8_MEMBER ( write );
+
+ DECLARE_WRITE_LINE_MEMBER( enable_w );
+ DECLARE_WRITE_LINE_MEMBER( cmd_w );
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+ virtual machine_config_constructor device_mconfig_additions() const;
+ virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
+
+private:
+ enum
+ {
+ STATUS_DOOR_CLOSED = 0x80,
+ STATUS_MEDIA = 0x40,
+ STATUS_MOTOR = 0x20,
+ STATUS_ERROR = 0x10,
+ STATUS_SUCCESS = 0x08,
+ STATUS_PLAYING = 0x04,
+ STATUS_DOOR_LOCKED = 0x02,
+ STATUS_READY = 0x01
+ };
+
+ required_device<cdrom_image_device> m_cdrom;
+ required_device<cdda_device> m_cdda;
+
+ devcb2_write_line m_stch_handler;
+ devcb2_write_line m_sten_handler;
+ devcb2_write_line m_drq_handler;
+ devcb2_write_line m_dten_handler;
+ devcb2_write_line m_scor_handler;
+ devcb2_write_line m_xaen_handler;
+
+ emu_timer *m_frame_timer;
+
+ bool m_motor;
+
+ // state of lines
+ int m_enabled;
+ int m_cmd;
+
+ // data transfer
+ UINT8 m_sector_buffer[CD_MAX_SECTOR_DATA];
+};
+
+// device type definition
+extern const device_type CR511B;
+
+#endif