| 1 | /*************************************************************************\r |
| 2 | * *\r |
| 3 | * $Id: s100_disk2.c 1771 2008-01-09 07:10:46Z hharte $ *\r |
| 4 | * *\r |
| 5 | * Copyright (c) 2007-2008 Howard M. Harte. *\r |
| 6 | * http://www.hartetec.com *\r |
| 7 | * *\r |
| 8 | * Permission is hereby granted, free of charge, to any person obtaining *\r |
| 9 | * a copy of this software and associated documentation files (the *\r |
| 10 | * "Software"), to deal in the Software without restriction, including *\r |
| 11 | * without limitation the rights to use, copy, modify, merge, publish, *\r |
| 12 | * distribute, sublicense, and/or sell copies of the Software, and to *\r |
| 13 | * permit persons to whom the Software is furnished to do so, subject to *\r |
| 14 | * the following conditions: *\r |
| 15 | * *\r |
| 16 | * The above copyright notice and this permission notice shall be *\r |
| 17 | * included in all copies or substantial portions of the Software. *\r |
| 18 | * *\r |
| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, *\r |
| 20 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *\r |
| 21 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND *\r |
| 22 | * NONINFRINGEMENT. IN NO EVENT SHALL HOWARD M. HARTE BE LIABLE FOR ANY *\r |
| 23 | * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, *\r |
| 24 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE *\r |
| 25 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *\r |
| 26 | * *\r |
| 27 | * Except as contained in this notice, the name of Howard M. Harte shall *\r |
| 28 | * not be used in advertising or otherwise to promote the sale, use or *\r |
| 29 | * other dealings in this Software without prior written authorization *\r |
| 30 | * Howard M. Harte. *\r |
| 31 | * *\r |
| 32 | * SIMH Interface based on altairz80_hdsk.c, by Peter Schorn. *\r |
| 33 | * *\r |
| 34 | * Module Description: *\r |
| 35 | * CompuPro DISK2 Hard Disk Controller module for SIMH. *\r |
| 36 | * This module must be used in conjunction with the CompuPro Selector *\r |
| 37 | * Channel Module for proper operation. *\r |
| 38 | * *\r |
| 39 | * Environment: *\r |
| 40 | * User mode only *\r |
| 41 | * *\r |
| 42 | *************************************************************************/\r |
| 43 | \r |
| 44 | #include "altairz80_defs.h"\r |
| 45 | \r |
| 46 | #if defined (_WIN32)\r |
| 47 | #include <windows.h>\r |
| 48 | #endif\r |
| 49 | \r |
| 50 | #include "sim_imd.h"\r |
| 51 | \r |
| 52 | #define SEEK_MSG 0x01\r |
| 53 | #define BUG_MSG 0x02\r |
| 54 | #define CMD_MSG 0x04\r |
| 55 | #define RD_DATA_MSG 0x08\r |
| 56 | #define WR_DATA_MSG 0x10\r |
| 57 | #define STATUS_MSG 0x20\r |
| 58 | #define VERBOSE_MSG 0x80\r |
| 59 | \r |
| 60 | #define DISK2_MAX_DRIVES 4\r |
| 61 | \r |
| 62 | typedef union {\r |
| 63 | uint8 raw[2051];\r |
| 64 | struct {\r |
| 65 | uint8 header[3];\r |
| 66 | uint8 data[2048];\r |
| 67 | } u;\r |
| 68 | } SECTOR_FORMAT;\r |
| 69 | \r |
| 70 | static SECTOR_FORMAT sdata;\r |
| 71 | \r |
| 72 | typedef struct {\r |
| 73 | UNIT *uptr;\r |
| 74 | DISK_INFO *imd;\r |
| 75 | uint16 ntracks; /* number of tracks */\r |
| 76 | uint8 nheads; /* number of heads */\r |
| 77 | uint8 nsectors; /* number of sectors/track */\r |
| 78 | uint32 sectsize; /* sector size, not including pre/postamble */\r |
| 79 | uint16 track; /* Current Track */\r |
| 80 | uint8 ready; /* Is drive ready? */\r |
| 81 | } DISK2_DRIVE_INFO;\r |
| 82 | \r |
| 83 | typedef struct {\r |
| 84 | PNP_INFO pnp; /* Plug and Play */\r |
| 85 | uint8 sel_drive; /* Currently selected drive */\r |
| 86 | uint8 head_sel; /* Head select (signals to drive itself) */\r |
| 87 | uint8 head; /* Head set by write to the HEAD register */\r |
| 88 | uint8 cyl; /* Cyl that the current operation is targetting */\r |
| 89 | uint8 sector; /* Sector the current READ/WRITE operation is targetting */\r |
| 90 | uint8 hdr_sector; /* Current sector for WRITE_HEADER */\r |
| 91 | uint8 ctl_attn;\r |
| 92 | uint8 ctl_run;\r |
| 93 | uint8 ctl_op;\r |
| 94 | uint8 ctl_fault_clr;\r |
| 95 | uint8 ctl_us;\r |
| 96 | uint8 timeout;\r |
| 97 | uint8 crc_error;\r |
| 98 | uint8 overrun;\r |
| 99 | uint8 seek_complete;\r |
| 100 | uint8 write_fault;\r |
| 101 | DISK2_DRIVE_INFO drive[DISK2_MAX_DRIVES];\r |
| 102 | } DISK2_INFO;\r |
| 103 | \r |
| 104 | static DISK2_INFO disk2_info_data = { { 0x0, 0, 0xC8, 2 } };\r |
| 105 | static DISK2_INFO *disk2_info = &disk2_info_data;\r |
| 106 | \r |
| 107 | extern uint32 PCX;\r |
| 108 | extern REG *sim_PC;\r |
| 109 | extern t_stat set_iobase(UNIT *uptr, int32 val, char *cptr, void *desc);\r |
| 110 | extern t_stat show_iobase(FILE *st, UNIT *uptr, int32 val, void *desc);\r |
| 111 | extern uint32 sim_map_resource(uint32 baseaddr, uint32 size, uint32 resource_type,\r |
| 112 | int32 (*routine)(const int32, const int32, const int32), uint8 unmap);\r |
| 113 | extern int32 selchan_dma(uint8 *buf, uint32 len);\r |
| 114 | extern int32 find_unit_index(UNIT *uptr);\r |
| 115 | \r |
| 116 | /* These are needed for DMA. PIO Mode has not been implemented yet. */\r |
| 117 | extern void PutBYTEWrapper(const uint32 Addr, const uint32 Value);\r |
| 118 | extern uint8 GetBYTEWrapper(const uint32 Addr);\r |
| 119 | \r |
| 120 | #define UNIT_V_DISK2_WLK (UNIT_V_UF + 0) /* write locked */\r |
| 121 | #define UNIT_DISK2_WLK (1 << UNIT_V_DISK2_WLK)\r |
| 122 | #define UNIT_V_DISK2_VERBOSE (UNIT_V_UF + 1) /* verbose mode, i.e. show error messages */\r |
| 123 | #define UNIT_DISK2_VERBOSE (1 << UNIT_V_DISK2_VERBOSE)\r |
| 124 | #define DISK2_CAPACITY (77*2*16*256) /* Default Micropolis Disk Capacity */\r |
| 125 | #define IMAGE_TYPE_DSK 1 /* Flat binary "DSK" image file. */\r |
| 126 | #define IMAGE_TYPE_IMD 2 /* ImageDisk "IMD" image file. */\r |
| 127 | #define IMAGE_TYPE_CPT 3 /* CP/M Transfer "CPT" image file. */\r |
| 128 | \r |
| 129 | static t_stat disk2_reset(DEVICE *disk2_dev);\r |
| 130 | static t_stat disk2_attach(UNIT *uptr, char *cptr);\r |
| 131 | static t_stat disk2_detach(UNIT *uptr);\r |
| 132 | \r |
| 133 | static int32 disk2dev(const int32 port, const int32 io, const int32 data);\r |
| 134 | \r |
| 135 | static uint8 DISK2_Read(const uint32 Addr);\r |
| 136 | static uint8 DISK2_Write(const uint32 Addr, uint8 cData);\r |
| 137 | \r |
| 138 | static int32 trace_level = 0; /* Disable all tracing by default */\r |
| 139 | \r |
| 140 | static UNIT disk2_unit[] = {\r |
| 141 | { UDATA (NULL, UNIT_FIX + UNIT_ATTABLE + UNIT_DISABLE + UNIT_ROABLE, DISK2_CAPACITY) },\r |
| 142 | { UDATA (NULL, UNIT_FIX + UNIT_ATTABLE + UNIT_DISABLE + UNIT_ROABLE, DISK2_CAPACITY) },\r |
| 143 | { UDATA (NULL, UNIT_FIX + UNIT_ATTABLE + UNIT_DISABLE + UNIT_ROABLE, DISK2_CAPACITY) },\r |
| 144 | { UDATA (NULL, UNIT_FIX + UNIT_ATTABLE + UNIT_DISABLE + UNIT_ROABLE, DISK2_CAPACITY) }\r |
| 145 | };\r |
| 146 | \r |
| 147 | static REG disk2_reg[] = {\r |
| 148 | { HRDATA (TRACELEVEL, trace_level, 16), },\r |
| 149 | { NULL }\r |
| 150 | };\r |
| 151 | \r |
| 152 | static MTAB disk2_mod[] = {\r |
| 153 | { MTAB_XTD|MTAB_VDV, 0, "IOBASE", "IOBASE", &set_iobase, &show_iobase, NULL },\r |
| 154 | { UNIT_DISK2_WLK, 0, "WRTENB", "WRTENB", NULL },\r |
| 155 | { UNIT_DISK2_WLK, UNIT_DISK2_WLK, "WRTLCK", "WRTLCK", NULL },\r |
| 156 | /* quiet, no warning messages */\r |
| 157 | { UNIT_DISK2_VERBOSE, 0, "QUIET", "QUIET", NULL },\r |
| 158 | /* verbose, show warning messages */\r |
| 159 | { UNIT_DISK2_VERBOSE, UNIT_DISK2_VERBOSE, "VERBOSE", "VERBOSE", NULL },\r |
| 160 | { 0 }\r |
| 161 | };\r |
| 162 | \r |
| 163 | DEVICE disk2_dev = {\r |
| 164 | "DISK2", disk2_unit, disk2_reg, disk2_mod,\r |
| 165 | DISK2_MAX_DRIVES, 10, 31, 1, DISK2_MAX_DRIVES, DISK2_MAX_DRIVES,\r |
| 166 | NULL, NULL, &disk2_reset,\r |
| 167 | NULL, &disk2_attach, &disk2_detach,\r |
| 168 | &disk2_info_data, (DEV_DISABLE | DEV_DIS), 0,\r |
| 169 | NULL, NULL, NULL\r |
| 170 | };\r |
| 171 | \r |
| 172 | /* Reset routine */\r |
| 173 | static t_stat disk2_reset(DEVICE *dptr)\r |
| 174 | {\r |
| 175 | PNP_INFO *pnp = (PNP_INFO *)dptr->ctxt;\r |
| 176 | \r |
| 177 | if(dptr->flags & DEV_DIS) { /* Disconnect I/O Ports */\r |
| 178 | sim_map_resource(pnp->io_base, pnp->io_size, RESOURCE_TYPE_IO, &disk2dev, TRUE);\r |
| 179 | } else {\r |
| 180 | /* Connect DISK2 at base address */\r |
| 181 | if(sim_map_resource(pnp->io_base, pnp->io_size, RESOURCE_TYPE_IO, &disk2dev, FALSE) != 0) {\r |
| 182 | printf("%s: error mapping I/O resource at 0x%04x\n", __FUNCTION__, pnp->io_base);\r |
| 183 | return SCPE_ARG;\r |
| 184 | }\r |
| 185 | }\r |
| 186 | return SCPE_OK;\r |
| 187 | }\r |
| 188 | \r |
| 189 | \r |
| 190 | /* Attach routine */\r |
| 191 | static t_stat disk2_attach(UNIT *uptr, char *cptr)\r |
| 192 | {\r |
| 193 | t_stat r = SCPE_OK;\r |
| 194 | DISK2_DRIVE_INFO *pDrive;\r |
| 195 | char header[4];\r |
| 196 | unsigned int i = 0;\r |
| 197 | \r |
| 198 | i = find_unit_index(uptr);\r |
| 199 | if (i == -1) {\r |
| 200 | return (SCPE_IERR);\r |
| 201 | }\r |
| 202 | pDrive = &disk2_info->drive[i];\r |
| 203 | \r |
| 204 | pDrive->ready = 1;\r |
| 205 | disk2_info->write_fault = 1;\r |
| 206 | pDrive->track = 5;\r |
| 207 | pDrive->ntracks = 243;\r |
| 208 | pDrive->nheads = 8;\r |
| 209 | pDrive->nsectors = 11;\r |
| 210 | pDrive->sectsize = 1024;\r |
| 211 | \r |
| 212 | r = attach_unit(uptr, cptr); /* attach unit */\r |
| 213 | if ( r != SCPE_OK) /* error? */\r |
| 214 | return r;\r |
| 215 | \r |
| 216 | /* Determine length of this disk */\r |
| 217 | if(sim_fsize(uptr->fileref) != 0) {\r |
| 218 | uptr->capac = sim_fsize(uptr->fileref);\r |
| 219 | } else {\r |
| 220 | uptr->capac = (pDrive->ntracks * pDrive->nsectors * pDrive->nheads * pDrive->sectsize);\r |
| 221 | }\r |
| 222 | \r |
| 223 | pDrive->uptr = uptr;\r |
| 224 | \r |
| 225 | /* Default for new file is DSK */\r |
| 226 | uptr->u3 = IMAGE_TYPE_DSK;\r |
| 227 | \r |
| 228 | if(uptr->capac > 0) {\r |
| 229 | fgets(header, 4, uptr->fileref);\r |
| 230 | if(!strcmp(header, "IMD")) {\r |
| 231 | uptr->u3 = IMAGE_TYPE_IMD;\r |
| 232 | } else if(!strcmp(header, "CPT")) {\r |
| 233 | printf("CPT images not yet supported\n");\r |
| 234 | uptr->u3 = IMAGE_TYPE_CPT;\r |
| 235 | disk2_detach(uptr);\r |
| 236 | return SCPE_OPENERR;\r |
| 237 | } else {\r |
| 238 | uptr->u3 = IMAGE_TYPE_DSK;\r |
| 239 | }\r |
| 240 | }\r |
| 241 | \r |
| 242 | if (uptr->flags & UNIT_DISK2_VERBOSE)\r |
| 243 | printf("DISK2%d, attached to '%s', type=%s, len=%d\n", i, cptr,\r |
| 244 | uptr->u3 == IMAGE_TYPE_IMD ? "IMD" : uptr->u3 == IMAGE_TYPE_CPT ? "CPT" : "DSK",\r |
| 245 | uptr->capac);\r |
| 246 | \r |
| 247 | if(uptr->u3 == IMAGE_TYPE_IMD) {\r |
| 248 | if(uptr->capac < 318000) {\r |
| 249 | printf("Cannot create IMD files with SIMH.\nCopy an existing file and format it with CP/M.\n");\r |
| 250 | disk2_detach(uptr);\r |
| 251 | return SCPE_OPENERR;\r |
| 252 | }\r |
| 253 | \r |
| 254 | if (uptr->flags & UNIT_DISK2_VERBOSE)\r |
| 255 | printf("--------------------------------------------------------\n");\r |
| 256 | disk2_info->drive[i].imd = diskOpen((uptr->fileref), (uptr->flags & UNIT_DISK2_VERBOSE));\r |
| 257 | if (uptr->flags & UNIT_DISK2_VERBOSE) printf("\n");\r |
| 258 | } else {\r |
| 259 | disk2_info->drive[i].imd = NULL;\r |
| 260 | }\r |
| 261 | \r |
| 262 | return SCPE_OK;\r |
| 263 | }\r |
| 264 | \r |
| 265 | \r |
| 266 | /* Detach routine */\r |
| 267 | t_stat disk2_detach(UNIT *uptr)\r |
| 268 | {\r |
| 269 | t_stat r;\r |
| 270 | int8 i;\r |
| 271 | \r |
| 272 | i = find_unit_index(uptr);\r |
| 273 | \r |
| 274 | if (i == -1) {\r |
| 275 | return (SCPE_IERR);\r |
| 276 | }\r |
| 277 | \r |
| 278 | if (uptr->flags & UNIT_DISK2_VERBOSE)\r |
| 279 | printf("Detach DISK2%d\n", i);\r |
| 280 | \r |
| 281 | r = detach_unit(uptr); /* detach unit */\r |
| 282 | if ( r != SCPE_OK)\r |
| 283 | return r;\r |
| 284 | \r |
| 285 | return SCPE_OK;\r |
| 286 | }\r |
| 287 | \r |
| 288 | \r |
| 289 | static int32 disk2dev(const int32 port, const int32 io, const int32 data)\r |
| 290 | {\r |
| 291 | /* TRACE_PRINT(VERBOSE_MSG, ("DISK2: " ADDRESS_FORMAT " IO %s, Port %02x" NLP, PCX, io ? "WR" : "RD", port)); */\r |
| 292 | if(io) {\r |
| 293 | DISK2_Write(port, data);\r |
| 294 | return 0;\r |
| 295 | } else {\r |
| 296 | return(DISK2_Read(port));\r |
| 297 | }\r |
| 298 | }\r |
| 299 | \r |
| 300 | #define DISK2_CSR 0 /* R=DISK2 Status / W=DISK2 Control Register */\r |
| 301 | #define DISK2_DATA 1 /* R=Step Pulse / W=Write Data Register */\r |
| 302 | \r |
| 303 | static uint8 DISK2_Read(const uint32 Addr)\r |
| 304 | {\r |
| 305 | uint8 cData;\r |
| 306 | DISK2_DRIVE_INFO *pDrive;\r |
| 307 | \r |
| 308 | pDrive = &disk2_info->drive[disk2_info->sel_drive];\r |
| 309 | cData = 0x00;\r |
| 310 | \r |
| 311 | switch(Addr & 0x1) {\r |
| 312 | case DISK2_CSR:\r |
| 313 | cData = (disk2_info->ctl_attn) << 7;\r |
| 314 | cData |= (disk2_info->timeout) << 6;\r |
| 315 | cData |= (disk2_info->crc_error) << 5;\r |
| 316 | cData |= (disk2_info->overrun) << 4;\r |
| 317 | cData |= (pDrive->ready == 0) ? 0x08 : 0x00;\r |
| 318 | cData |= (disk2_info->seek_complete == 0) ? 0x04 : 0x00;\r |
| 319 | cData |= (disk2_info->write_fault) << 1;\r |
| 320 | cData |= ((pDrive->track != 0) || (disk2_info->seek_complete == 0)) ? 0x01 : 0x00;\r |
| 321 | TRACE_PRINT(STATUS_MSG, ("DISK2: " ADDRESS_FORMAT " RD STATUS = 0x%02x" NLP, PCX, cData));\r |
| 322 | \r |
| 323 | disk2_info->seek_complete = 1;\r |
| 324 | break;\r |
| 325 | case DISK2_DATA:\r |
| 326 | if(disk2_info->ctl_op & 0x04) {\r |
| 327 | if(pDrive->track < pDrive->ntracks) {\r |
| 328 | pDrive->track ++;\r |
| 329 | }\r |
| 330 | } else {\r |
| 331 | if(pDrive->track > 0) {\r |
| 332 | pDrive->track --;\r |
| 333 | }\r |
| 334 | }\r |
| 335 | TRACE_PRINT(SEEK_MSG, ("DISK2: " ADDRESS_FORMAT " Step %s, Track=%d" NLP,\r |
| 336 | PCX, disk2_info->ctl_op & 0x04 ? "IN" : "OUT", pDrive->track));\r |
| 337 | disk2_info->seek_complete = 0;\r |
| 338 | cData = 0xFF; /* Return High-Z data */\r |
| 339 | break;\r |
| 340 | }\r |
| 341 | \r |
| 342 | return (cData);\r |
| 343 | }\r |
| 344 | \r |
| 345 | #define DISK2_OP_DRIVE 0x00\r |
| 346 | #define DISK2_OP_CYL 0x01\r |
| 347 | #define DISK2_OP_HEAD 0x02\r |
| 348 | #define DISK2_OP_SECTOR 0x03\r |
| 349 | \r |
| 350 | #define DISK2_CMD_NULL 0x00\r |
| 351 | #define DISK2_CMD_READ_DATA 0x01\r |
| 352 | #define DISK2_CMD_WRITE_DATA 0x02\r |
| 353 | #define DISK2_CMD_WRITE_HEADER 0x03\r |
| 354 | #define DISK2_CMD_READ_HEADER 0x04\r |
| 355 | \r |
| 356 | static uint8 DISK2_Write(const uint32 Addr, uint8 cData)\r |
| 357 | {\r |
| 358 | uint32 track_offset;\r |
| 359 | uint8 result = 0;\r |
| 360 | uint8 i;\r |
| 361 | long file_offset;\r |
| 362 | DISK2_DRIVE_INFO *pDrive;\r |
| 363 | \r |
| 364 | pDrive = &disk2_info->drive[disk2_info->sel_drive];\r |
| 365 | \r |
| 366 | switch(Addr & 0x1) {\r |
| 367 | case DISK2_CSR: /* Write CTL register */\r |
| 368 | disk2_info->ctl_attn = (cData & 0x80) >> 7;\r |
| 369 | disk2_info->ctl_run = (cData & 0x40) >> 6;\r |
| 370 | disk2_info->ctl_op = (cData & 0x38) >> 3;\r |
| 371 | disk2_info->ctl_fault_clr = (cData & 0x04) >> 2;\r |
| 372 | if(disk2_info->ctl_fault_clr == 1) {\r |
| 373 | disk2_info->timeout = 0;\r |
| 374 | }\r |
| 375 | disk2_info->ctl_us = (cData & 0x03);\r |
| 376 | TRACE_PRINT(VERBOSE_MSG, ("DISK2: " ADDRESS_FORMAT " ATTN*=%d, RUN=%d, OP=%d, FAULT_CLR=%d, US=%d" NLP,\r |
| 377 | PCX,\r |
| 378 | disk2_info->ctl_attn,\r |
| 379 | disk2_info->ctl_run,\r |
| 380 | disk2_info->ctl_op,\r |
| 381 | disk2_info->ctl_fault_clr,\r |
| 382 | disk2_info->ctl_us));\r |
| 383 | \r |
| 384 | /* FIXME: seek_complete = 1 is needed by CP/M, but why? Also, maybe related,\r |
| 385 | * there appears to be a bug in the seeking logic. For some reason, the\r |
| 386 | * pDrive->track does not equal the disk2_info->cyl, when doing READ_DATA and\r |
| 387 | * WRITE_DATA commands. For this reason, disk2_info->cyl is used instead of\r |
| 388 | * pDrive->track for these commands. For READ_HEADER and WRITE_HEADER,\r |
| 389 | * pDrive->track is used, because the DISK2 format program (DISK2.COM) does not\r |
| 390 | * issue DISK2_OP_CYL. The root cause of this anomaly needs to be determined,\r |
| 391 | * because it is surely a bug in the logic somewhere.\r |
| 392 | */\r |
| 393 | /* pDrive->track may be different from disk2_info->cyl when a program such as DISK2.COM\r |
| 394 | moves the position of the track without informing the CP/M BIOS which stores the\r |
| 395 | current track for each drive. This appears to be an application program bug.\r |
| 396 | */\r |
| 397 | disk2_info->seek_complete = 1;\r |
| 398 | \r |
| 399 | if(disk2_info->ctl_run == 1) {\r |
| 400 | disk2_info->timeout = 0;\r |
| 401 | track_offset = disk2_info->cyl * pDrive->nheads * pDrive->nsectors * (pDrive->sectsize + 3);\r |
| 402 | \r |
| 403 | switch(disk2_info->ctl_op) {\r |
| 404 | case DISK2_CMD_NULL:\r |
| 405 | TRACE_PRINT(CMD_MSG, ("DISK2: " ADDRESS_FORMAT " NULL Command" NLP, PCX));\r |
| 406 | break;\r |
| 407 | case DISK2_CMD_READ_DATA:\r |
| 408 | TRACE_PRINT(RD_DATA_MSG, ("DISK2: " ADDRESS_FORMAT " READ_DATA: (C:%d/H:%d/S:%d)" NLP,\r |
| 409 | PCX,\r |
| 410 | disk2_info->cyl,\r |
| 411 | disk2_info->head,\r |
| 412 | disk2_info->sector));\r |
| 413 | if(disk2_info->head_sel != disk2_info->head) {\r |
| 414 | printf("DISK2: " ADDRESS_FORMAT " READ_DATA: head_sel != head" NLP, PCX);\r |
| 415 | }\r |
| 416 | /* See FIXME above... that might be why this does not work properly... */\r |
| 417 | if(disk2_info->cyl != pDrive->track) { /* problem, should not happen, see above */\r |
| 418 | TRACE_PRINT(BUG_MSG, ("DISK2: " ADDRESS_FORMAT " READ_DATA: cyl=%d, track=%d" NLP,\r |
| 419 | PCX, disk2_info->cyl, pDrive->track));\r |
| 420 | pDrive->track = disk2_info->cyl; /* update track */\r |
| 421 | }\r |
| 422 | fseek((pDrive->uptr)->fileref, track_offset + (disk2_info->head_sel * pDrive->nsectors * (pDrive->sectsize + 3)), SEEK_SET);\r |
| 423 | for(i=0;i<pDrive->nsectors;i++) {\r |
| 424 | /* Read sector */\r |
| 425 | fread(sdata.raw, (pDrive->sectsize + 3), 1, (pDrive->uptr)->fileref);\r |
| 426 | if(sdata.u.header[2] == disk2_info->sector) {\r |
| 427 | if(sdata.u.header[0] != disk2_info->cyl) { /*pDrive->track) { */\r |
| 428 | printf("DISK2: " ADDRESS_FORMAT " READ_DATA Incorrect header: track" NLP, PCX);\r |
| 429 | disk2_info->timeout = 1;\r |
| 430 | }\r |
| 431 | if(sdata.u.header[1] != disk2_info->head) {\r |
| 432 | printf("DISK2: " ADDRESS_FORMAT " READ_DATA Incorrect header: head" NLP, PCX);\r |
| 433 | disk2_info->timeout = 1;\r |
| 434 | }\r |
| 435 | \r |
| 436 | selchan_dma(sdata.u.data, pDrive->sectsize);\r |
| 437 | break;\r |
| 438 | }\r |
| 439 | if(i == pDrive->nsectors) {\r |
| 440 | printf("DISK2: " ADDRESS_FORMAT " Sector not found" NLP, PCX);\r |
| 441 | disk2_info->timeout = 1;\r |
| 442 | }\r |
| 443 | }\r |
| 444 | \r |
| 445 | break;\r |
| 446 | case DISK2_CMD_WRITE_DATA:\r |
| 447 | TRACE_PRINT(WR_DATA_MSG, ("DISK2: " ADDRESS_FORMAT " WRITE_DATA: (C:%d/H:%d/S:%d)" NLP,\r |
| 448 | PCX,\r |
| 449 | disk2_info->cyl,\r |
| 450 | disk2_info->head,\r |
| 451 | disk2_info->sector));\r |
| 452 | if(disk2_info->head_sel != disk2_info->head) {\r |
| 453 | printf("DISK2: " ADDRESS_FORMAT " WRITE_DATA: head_sel != head" NLP, PCX);\r |
| 454 | }\r |
| 455 | if(disk2_info->cyl != pDrive->track) { /* problem, should not happen, see above */\r |
| 456 | TRACE_PRINT(BUG_MSG, ("DISK2: " ADDRESS_FORMAT " WRITE_DATA = 0x%02x, cyl=%d, track=%d" NLP,\r |
| 457 | PCX, cData, disk2_info->cyl, pDrive->track));\r |
| 458 | pDrive->track = disk2_info->cyl; /* update track */\r |
| 459 | }\r |
| 460 | \r |
| 461 | fseek((pDrive->uptr)->fileref, track_offset + (disk2_info->head_sel * pDrive->nsectors * (pDrive->sectsize + 3)), SEEK_SET);\r |
| 462 | for(i=0;i<pDrive->nsectors;i++) {\r |
| 463 | /* Read sector */\r |
| 464 | file_offset = ftell((pDrive->uptr)->fileref);\r |
| 465 | fread(sdata.raw, 3, 1, (pDrive->uptr)->fileref);\r |
| 466 | if(sdata.u.header[2] == disk2_info->sector) {\r |
| 467 | if(sdata.u.header[0] != disk2_info->cyl) {\r |
| 468 | printf("DISK2: " ADDRESS_FORMAT " WRITE_DATA Incorrect header: track" NLP, PCX);\r |
| 469 | disk2_info->timeout = 1;\r |
| 470 | }\r |
| 471 | if(sdata.u.header[1] != disk2_info->head) {\r |
| 472 | printf("DISK2: " ADDRESS_FORMAT " WRITE_DATA Incorrect header: head" NLP, PCX);\r |
| 473 | disk2_info->timeout = 1;\r |
| 474 | }\r |
| 475 | \r |
| 476 | selchan_dma(sdata.u.data, pDrive->sectsize);\r |
| 477 | fseek((pDrive->uptr)->fileref, file_offset+3, SEEK_SET);\r |
| 478 | fwrite(sdata.u.data, (pDrive->sectsize), 1, (pDrive->uptr)->fileref);\r |
| 479 | break;\r |
| 480 | }\r |
| 481 | fread(sdata.raw, pDrive->sectsize, 1, (pDrive->uptr)->fileref);\r |
| 482 | if(i == pDrive->nsectors) {\r |
| 483 | printf("DISK2: " ADDRESS_FORMAT " Sector not found" NLP, PCX);\r |
| 484 | disk2_info->timeout = 1;\r |
| 485 | }\r |
| 486 | }\r |
| 487 | break;\r |
| 488 | case DISK2_CMD_WRITE_HEADER:\r |
| 489 | track_offset = pDrive->track * pDrive->nheads * pDrive->nsectors * (pDrive->sectsize + 3);\r |
| 490 | TRACE_PRINT(CMD_MSG, ("DISK2: " ADDRESS_FORMAT " WRITE_HEADER Command: track=%d (%d), Head=%d, Sector=%d" NLP,\r |
| 491 | PCX,\r |
| 492 | pDrive->track,\r |
| 493 | disk2_info->cyl,\r |
| 494 | disk2_info->head_sel,\r |
| 495 | disk2_info->hdr_sector));\r |
| 496 | \r |
| 497 | i = disk2_info->hdr_sector;\r |
| 498 | selchan_dma(sdata.raw, 3);\r |
| 499 | fseek((pDrive->uptr)->fileref, track_offset + (disk2_info->head_sel * (pDrive->sectsize + 3) * pDrive->nsectors) + (i * (pDrive->sectsize + 3)), SEEK_SET);\r |
| 500 | fwrite(sdata.raw, 3, 1, (pDrive->uptr)->fileref);\r |
| 501 | \r |
| 502 | disk2_info->hdr_sector++;\r |
| 503 | if(disk2_info->hdr_sector >= pDrive->nsectors) {\r |
| 504 | disk2_info->hdr_sector = 0;\r |
| 505 | disk2_info->timeout = 1;\r |
| 506 | }\r |
| 507 | break;\r |
| 508 | case DISK2_CMD_READ_HEADER:\r |
| 509 | track_offset = pDrive->track * pDrive->nheads * pDrive->nsectors * (pDrive->sectsize + 3);\r |
| 510 | TRACE_PRINT(CMD_MSG, ("DISK2: " ADDRESS_FORMAT " READ_HEADER Command" NLP, PCX));\r |
| 511 | fseek((pDrive->uptr)->fileref, track_offset + (disk2_info->head_sel * pDrive->nsectors * (pDrive->sectsize + 3)), SEEK_SET);\r |
| 512 | fread(sdata.raw, 3, 1, (pDrive->uptr)->fileref);\r |
| 513 | selchan_dma(sdata.raw, 3);\r |
| 514 | break;\r |
| 515 | default:\r |
| 516 | printf("DISK2: " ADDRESS_FORMAT " Unknown CMD=%d" NLP, PCX, disk2_info->ctl_op);\r |
| 517 | break;\r |
| 518 | }\r |
| 519 | \r |
| 520 | disk2_info->ctl_attn = 0;\r |
| 521 | }\r |
| 522 | \r |
| 523 | break;\r |
| 524 | case DISK2_DATA:\r |
| 525 | switch(disk2_info->ctl_op) {\r |
| 526 | case DISK2_OP_DRIVE:\r |
| 527 | switch(cData >> 4) {\r |
| 528 | case 0x01:\r |
| 529 | disk2_info->sel_drive = 0;\r |
| 530 | break;\r |
| 531 | case 0x02:\r |
| 532 | disk2_info->sel_drive = 1;\r |
| 533 | break;\r |
| 534 | case 0x04:\r |
| 535 | disk2_info->sel_drive = 2;\r |
| 536 | break;\r |
| 537 | case 0x08:\r |
| 538 | disk2_info->sel_drive = 3;\r |
| 539 | break;\r |
| 540 | default:\r |
| 541 | printf("DISK2: " ADDRESS_FORMAT " Error, invalid drive select=0x%x" NLP, PCX, cData >> 4);\r |
| 542 | break;\r |
| 543 | }\r |
| 544 | \r |
| 545 | disk2_info->head_sel = cData & 0x0F;\r |
| 546 | \r |
| 547 | TRACE_PRINT(VERBOSE_MSG, ("DISK2: " ADDRESS_FORMAT " Write DATA [DRIVE]=%d, Head=%d" NLP,\r |
| 548 | PCX, disk2_info->sel_drive, disk2_info->head));\r |
| 549 | break;\r |
| 550 | case DISK2_OP_CYL:\r |
| 551 | disk2_info->cyl = cData;\r |
| 552 | TRACE_PRINT(VERBOSE_MSG, ("DISK2: " ADDRESS_FORMAT " Write DATA [CYL] = %02x" NLP,\r |
| 553 | PCX, cData));\r |
| 554 | break;\r |
| 555 | case DISK2_OP_HEAD:\r |
| 556 | disk2_info->head = cData;\r |
| 557 | TRACE_PRINT(VERBOSE_MSG, ("DISK2: " ADDRESS_FORMAT " Write DATA [HEAD] = %02x" NLP,\r |
| 558 | PCX, cData));\r |
| 559 | break;\r |
| 560 | case DISK2_OP_SECTOR:\r |
| 561 | disk2_info->sector = cData;\r |
| 562 | TRACE_PRINT(VERBOSE_MSG, ("DISK2: " ADDRESS_FORMAT " Write Register [SECTOR] = %02x" NLP,\r |
| 563 | PCX, cData));\r |
| 564 | break;\r |
| 565 | default:\r |
| 566 | TRACE_PRINT(VERBOSE_MSG, ("DISK2: " ADDRESS_FORMAT " Write Register unknown op [%d] = %02x" NLP,\r |
| 567 | PCX, disk2_info->ctl_op, cData));\r |
| 568 | break;\r |
| 569 | }\r |
| 570 | }\r |
| 571 | \r |
| 572 | return (result);\r |
| 573 | }\r |
| 574 | \r |