// license:??? // copyright-holders:??? /* 990_hd.h: include file for 990_hd.c */ #ifndef __990_HD_H_ #define __990_HD_H_ #include "imagedev/harddriv.h" /* max disk units per controller: 4 is the protocol limit, but it may be overriden if more than one controller is used */ #define MAX_DISK_UNIT 4 class ti990_hdc_device : public device_t { public: ti990_hdc_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); template static devcb_base &static_set_int_callback(device_t &device, _Object object) { return downcast(device).m_interrupt_callback.set_callback(object); } DECLARE_READ16_MEMBER(read); DECLARE_WRITE16_MEMBER(write); DECLARE_DEVICE_IMAGE_LOAD_MEMBER( ti990_hd ); DECLARE_DEVICE_IMAGE_UNLOAD_MEMBER( ti990_hd ); protected: // device-level overrides virtual void device_start(); virtual machine_config_constructor device_mconfig_additions() const; int get_id_from_device( device_t *device ); inline int is_unit_loaded(int unit); int cur_disk_unit(void); void update_interrupt(); int check_sector_address(int unit, unsigned int cylinder, unsigned int head, unsigned int sector); int sector_to_lba(int unit, unsigned int cylinder, unsigned int head, unsigned int sector, unsigned int *lba); int read_sector(int unit, unsigned int lba, void *buffer, unsigned int bytes_to_read); int write_sector(int unit, unsigned int lba, const void *buffer, unsigned int bytes_to_write); void store_registers(); void write_format(); void read_data(); void write_data(); void unformatted_read(); void restore(); void execute_command(); private: enum format_t { format_mame, format_old }; /* disk drive unit descriptor */ struct hd_unit_t { device_image_interface *img; /* image descriptor */ format_t format; hard_disk_file *hd_handle; /* mame hard disk descriptor - only if format == format_mame */ unsigned int wp : 1; /* TRUE if disk is write-protected */ unsigned int unsafe : 1; /* TRUE when a disk has just been connected */ /* disk geometry */ unsigned int cylinders, heads, sectors_per_track, bytes_per_sector; }; UINT16 m_w[8]; devcb_write_line m_interrupt_callback; hd_unit_t m_d[MAX_DISK_UNIT]; }; #define MCFG_TI990_HDC_INT_CALLBACK( _write ) \ devcb = &ti990_hdc_device::static_set_int_callback( *device, DEVCB_##_write ); extern const device_type TI990_HDC; #endif