mirror of
https://github.com/holub/mame
synced 2025-06-04 03:46:29 +03:00
115 lines
3.3 KiB
C++
115 lines
3.3 KiB
C++
/**********************************************************************
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PC-style floppy disk controller emulation
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**********************************************************************/
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#ifndef PC_FDC_H
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#define PC_FDC_H
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#include "emu.h"
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#include "machine/upd765.h"
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#define MCFG_PC_FDC_XT_ADD(_tag) \
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MCFG_DEVICE_ADD(_tag, PC_FDC_XT, 0)
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#define MCFG_PC_FDC_AT_ADD(_tag) \
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MCFG_DEVICE_ADD(_tag, PC_FDC_AT, 0)
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class pc_fdc_family_device : public pc_fdc_interface {
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public:
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pc_fdc_family_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
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required_device<upd765a_device> fdc;
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virtual void setup_intrq_cb(line_cb cb);
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virtual void setup_drq_cb(line_cb cb);
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virtual DECLARE_ADDRESS_MAP(map, 8);
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virtual void tc_w(bool state);
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virtual UINT8 dma_r();
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virtual void dma_w(UINT8 data);
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virtual UINT8 do_dir_r();
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READ8_MEMBER(dor_r);
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WRITE8_MEMBER(dor_w);
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READ8_MEMBER(dir_r);
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WRITE8_MEMBER(ccr_w);
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protected:
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virtual void device_start();
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virtual void device_reset();
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virtual machine_config_constructor device_mconfig_additions() const;
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line_cb intrq_cb, drq_cb;
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bool irq, drq, fdc_drq, fdc_irq;
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UINT8 dor;
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floppy_image_device *floppy[4];
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void irq_w(bool state);
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void drq_w(bool state);
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void check_irq();
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void check_drq();
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};
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class pc_fdc_xt_device : public pc_fdc_family_device {
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public:
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pc_fdc_xt_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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virtual DECLARE_ADDRESS_MAP(map, 8);
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WRITE8_MEMBER(dor_fifo_w);
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};
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class pc_fdc_at_device : public pc_fdc_family_device {
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public:
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pc_fdc_at_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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virtual DECLARE_ADDRESS_MAP(map, 8);
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};
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extern const device_type PC_FDC_XT;
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extern const device_type PC_FDC_AT;
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#if 0
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/* interface has been seperated, so that it can be used in the super i/o chip */
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#define PC_FDC_STATUS_REGISTER_A 0
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#define PC_FDC_STATUS_REGISTER_B 1
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#define PC_FDC_DIGITAL_OUTPUT_REGISTER 2
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#define PC_FDC_TAPE_DRIVE_REGISTER 3
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#define PC_FDC_MAIN_STATUS_REGISTER 4
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#define PC_FDC_DATA_RATE_REGISTER 4
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#define PC_FDC_DATA_REGISTER 5
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#define PC_FDC_RESERVED_REGISTER 6
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#define PC_FDC_DIGITIAL_INPUT_REGISTER 7
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#define PC_FDC_CONFIGURATION_CONTROL_REGISTER 8
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/* main interface */
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struct pc_fdc_interface
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{
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void (*pc_fdc_interrupt)(running_machine&,int);
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void (*pc_fdc_dma_drq)(running_machine&,int);
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device_t *(*get_image)(running_machine&, int floppy_index);
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device_t *(*get_device)(running_machine&);
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};
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extern const upd765_interface pc_fdc_upd765_connected_interface;
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extern const upd765_interface pc_fdc_upd765_not_connected_interface;
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extern const upd765_interface pc_fdc_upd765_connected_1_drive_interface;
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extern const upd765_interface pcjr_fdc_upd765_interface;
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void pc_fdc_reset(running_machine &machine);
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void pc_fdc_init(running_machine &machine, const struct pc_fdc_interface *iface);
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void pc_fdc_set_tc_state(running_machine &machine, int state);
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int pc_fdc_dack_r(running_machine &machine, address_space &space);
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void pc_fdc_dack_w(running_machine &machine, address_space &space, int data);
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DECLARE_READ8_HANDLER(pc_fdc_r);
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DECLARE_WRITE8_HANDLER(pc_fdc_w);
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DECLARE_WRITE8_HANDLER ( pcjr_fdc_w );
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#endif
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#endif /* PC_FDC_H */
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