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/**********************************************************************
PC-style floppy disk controller emulation
**********************************************************************/
#ifndef PC_FDC_H
#define PC_FDC_H
#include "emu.h"
#include "machine/upd765.h"
#define MCFG_PC_FDC_XT_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, PC_FDC_XT, 0)
#define MCFG_PC_FDC_AT_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, PC_FDC_AT, 0)
class pc_fdc_family_device : public pc_fdc_interface {
public:
pc_fdc_family_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock);
required_device<upd765a_device> fdc;
virtual void setup_intrq_cb(line_cb cb);
virtual void setup_drq_cb(line_cb cb);
virtual DECLARE_ADDRESS_MAP(map, 8);
virtual void tc_w(bool state);
virtual UINT8 dma_r();
virtual void dma_w(UINT8 data);
virtual UINT8 do_dir_r();
READ8_MEMBER(dor_r);
WRITE8_MEMBER(dor_w);
READ8_MEMBER(dir_r);
WRITE8_MEMBER(ccr_w);
protected:
virtual void device_start();
virtual void device_reset();
virtual machine_config_constructor device_mconfig_additions() const;
line_cb intrq_cb, drq_cb;
bool irq, drq, fdc_drq, fdc_irq;
UINT8 dor;
floppy_image_device *floppy[4];
void irq_w(bool state);
void drq_w(bool state);
void check_irq();
void check_drq();
};
class pc_fdc_xt_device : public pc_fdc_family_device {
public:
pc_fdc_xt_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
virtual DECLARE_ADDRESS_MAP(map, 8);
WRITE8_MEMBER(dor_fifo_w);
};
class pc_fdc_at_device : public pc_fdc_family_device {
public:
pc_fdc_at_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
virtual DECLARE_ADDRESS_MAP(map, 8);
};
extern const device_type PC_FDC_XT;
extern const device_type PC_FDC_AT;
#if 0
/* interface has been seperated, so that it can be used in the super i/o chip */
#define PC_FDC_STATUS_REGISTER_A 0
#define PC_FDC_STATUS_REGISTER_B 1
#define PC_FDC_DIGITAL_OUTPUT_REGISTER 2
#define PC_FDC_TAPE_DRIVE_REGISTER 3
#define PC_FDC_MAIN_STATUS_REGISTER 4
#define PC_FDC_DATA_RATE_REGISTER 4
#define PC_FDC_DATA_REGISTER 5
#define PC_FDC_RESERVED_REGISTER 6
#define PC_FDC_DIGITIAL_INPUT_REGISTER 7
#define PC_FDC_CONFIGURATION_CONTROL_REGISTER 8
/* main interface */
struct pc_fdc_interface
{
void (*pc_fdc_interrupt)(running_machine&,int);
void (*pc_fdc_dma_drq)(running_machine&,int);
device_t *(*get_image)(running_machine&, int floppy_index);
device_t *(*get_device)(running_machine&);
};
extern const upd765_interface pc_fdc_upd765_connected_interface;
extern const upd765_interface pc_fdc_upd765_not_connected_interface;
extern const upd765_interface pc_fdc_upd765_connected_1_drive_interface;
extern const upd765_interface pcjr_fdc_upd765_interface;
void pc_fdc_reset(running_machine &machine);
void pc_fdc_init(running_machine &machine, const struct pc_fdc_interface *iface);
void pc_fdc_set_tc_state(running_machine &machine, int state);
int pc_fdc_dack_r(running_machine &machine, address_space &space);
void pc_fdc_dack_w(running_machine &machine, address_space &space, int data);
DECLARE_READ8_HANDLER(pc_fdc_r);
DECLARE_WRITE8_HANDLER(pc_fdc_w);
DECLARE_WRITE8_HANDLER ( pcjr_fdc_w );
#endif
#endif /* PC_FDC_H */
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