2 Skelton for retropc emulator
5 Author : Takeda.Toshiya
8 [ MB8877 / MB8876 / MB8866 / MB89311 ]
18 #define SIG_MB8877_ACCESS 0
19 #define SIG_MB8877_DRIVEREG 1
20 #define SIG_MB8877_SIDEREG 2
21 #define SIG_MB8877_MOTOR 3
26 class MB8877 : public DEVICE
30 outputs_t outputs_irq;
31 outputs_t outputs_drq;
35 NOISE* d_noise_head_down;
36 NOISE* d_noise_head_up;
53 int next_trans_position;
54 int bytes_before_2nd_drq;
55 int next_am1_position;
57 bool count_immediate; // Hack for FLEX.
62 uint8_t status, status_tmp;
63 uint8_t cmdreg, cmdreg_tmp;
74 void cancel_my_event(int event);
75 void register_my_event(int event, double usec);
76 bool register_my_event_with_check(int event, double usec);
77 void register_seek_event(bool first);
78 void register_drq_event(int bytes);
79 void register_lost_event(int bytes);
81 bool check_drive(void);
82 bool check_drive2(void);
100 uint32_t prev_drq_clock;
101 uint32_t seekend_clock;
105 bool invert_registers;
106 bool type_fm77av_2dd;
113 bool mb8877_no_busy_after_seek;
114 int mb8877_delay_after_seek;
118 int __FASTCALL get_cur_position();
119 double __FASTCALL get_usec_to_start_trans(bool first_sector);
120 double __FASTCALL get_usec_to_next_trans_pos(bool delay);
121 double __FASTCALL get_usec_to_detect_index_hole(int count, bool delay);
124 uint8_t search_track();
125 uint8_t search_sector();
126 uint8_t search_addr();
135 void cmd_readdata(bool first_sector);
136 void cmd_writedata(bool first_sector);
138 void cmd_readtrack();
139 void cmd_writetrack();
144 void update_head_flag(int drv, bool head_load);
147 void __FASTCALL set_irq(bool val);
148 void __FASTCALL set_drq(bool val);
151 MB8877(VM_TEMPLATE* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
153 initialize_output_signals(&outputs_irq);
154 initialize_output_signals(&outputs_drq);
156 d_noise_head_down = NULL;
157 d_noise_head_up = NULL;
158 // these parameters may be modified before calling initialize()
159 drvreg = sidereg = 0;
160 motor_on = drive_sel = false;
162 mb8877_delay_after_seek = 0;
163 fdc_debug_log = invert_registers = type_fm77av_2dd = false;
164 type_mb8866 = type_mb89311 = false;
165 type_x1 = type_fm7 = type_fmr50 = type_fmr60 = false;
166 mb8877_no_busy_after_seek = false;
168 _drive_mask = _max_drive - 1;
169 //#if defined(HAS_MB89311)
170 // set_device_name(_T("MB89311 FDC"));
171 //#elif defined(HAS_MB8866)
172 // set_device_name(_T("MB8866 FDC"));
173 //#elif defined(HAS_MB8876)
174 // set_device_name(_T("MB8876 FDC"));
176 // set_device_name(_T("MB8877 FDC"));
185 void __FASTCALL write_io8(uint32_t addr, uint32_t data);
186 uint32_t __FASTCALL read_io8(uint32_t addr);
187 void __FASTCALL write_dma_io8(uint32_t addr, uint32_t data);
188 uint32_t __FASTCALL read_dma_io8(uint32_t addr);
189 void __FASTCALL write_signal(int id, uint32_t data, uint32_t mask);
190 uint32_t __FASTCALL read_signal(int ch);
191 void event_callback(int event_id, int err);
192 void update_config();
193 bool is_debugger_available()
197 bool get_debug_regs_info(_TCHAR *buffer, size_t buffer_len);
198 bool process_state(FILEIO* state_fio, bool loading);
201 void set_context_irq(DEVICE* device, int id, uint32_t mask)
203 register_output_signal(&outputs_irq, device, id, mask);
205 void set_context_drq(DEVICE* device, int id, uint32_t mask)
207 register_output_signal(&outputs_drq, device, id, mask);
209 void set_context_noise_seek(NOISE* device)
211 d_noise_seek = device;
213 NOISE* get_context_noise_seek()
217 void set_context_noise_head_down(NOISE* device)
219 d_noise_head_down = device;
221 NOISE* get_context_noise_head_down()
223 return d_noise_head_down;
225 void set_context_noise_head_up(NOISE* device)
227 d_noise_head_up = device;
229 NOISE* get_context_noise_head_up()
231 return d_noise_head_up;
233 DISK* get_disk_handler(int drv)
237 void open_disk(int drv, const _TCHAR* file_path, int bank);
238 void close_disk(int drv);
239 bool is_disk_inserted(int drv);
240 void is_disk_protected(int drv, bool value);
241 bool is_disk_protected(int drv);
242 uint8_t get_media_type(int drv);
243 void set_drive_type(int drv, uint8_t type);
244 uint8_t get_drive_type(int drv);
245 void set_drive_rpm(int drv, int rpm);
246 void set_drive_mfm(int drv, bool mfm);
247 void set_track_size(int drv, int size);
248 uint8_t fdc_status();