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1 | /*************************************************************************\r |
2 | * *\r | |
3 | * $Id: s100_mdsad.c 1773 2008-01-11 05:46:19Z 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 | * Northstar MDS-AD Disk Controller module for SIMH *\r | |
36 | * Only Double-Density is supported for now. *\r | |
37 | * *\r | |
38 | * Environment: *\r | |
39 | * User mode only *\r | |
40 | * *\r | |
41 | *************************************************************************/\r | |
42 | \r | |
43 | /*#define DBG_MSG*/\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 | #ifdef DBG_MSG\r | |
53 | #define DBG_PRINT(args) printf args\r | |
54 | #else\r | |
55 | #define DBG_PRINT(args)\r | |
56 | #endif\r | |
57 | \r | |
58 | #define SEEK_MSG 0x01\r | |
59 | #define ORDERS_MSG 0x02\r | |
60 | #define CMD_MSG 0x04\r | |
61 | #define RD_DATA_MSG 0x08\r | |
62 | #define WR_DATA_MSG 0x10\r | |
63 | #define STATUS_MSG 0x20\r | |
64 | #define RD_DATA_DETAIL_MSG 0x40\r | |
65 | #define WR_DATA_DETAIL_MSG 0x80\r | |
66 | \r | |
67 | extern uint32 PCX;\r | |
68 | extern t_stat set_membase(UNIT *uptr, int32 val, char *cptr, void *desc);\r | |
69 | extern t_stat show_membase(FILE *st, UNIT *uptr, int32 val, void *desc);\r | |
70 | extern uint32 sim_map_resource(uint32 baseaddr, uint32 size, uint32 resource_type,\r | |
71 | int32 (*routine)(const int32, const int32, const int32), uint8 unmap);\r | |
72 | extern REG *sim_PC;\r | |
73 | \r | |
74 | #define MDSAD_MAX_DRIVES 4\r | |
75 | #define MDSAD_SECTOR_LEN 512\r | |
76 | #define MDSAD_SECTORS_PER_TRACK 10\r | |
77 | #define MDSAD_TRACKS 35\r | |
78 | #define MDSAD_RAW_LEN (32 + 2 + MDSAD_SECTOR_LEN + 1)\r | |
79 | \r | |
80 | typedef union {\r | |
81 | struct {\r | |
82 | uint8 zeros[32];\r | |
83 | uint8 sync[2];\r | |
84 | uint8 data[MDSAD_SECTOR_LEN];\r | |
85 | uint8 checksum;\r | |
86 | } u;\r | |
87 | uint8 raw[MDSAD_RAW_LEN];\r | |
88 | \r | |
89 | } SECTOR_FORMAT;\r | |
90 | \r | |
91 | typedef struct {\r | |
92 | UNIT *uptr;\r | |
93 | DISK_INFO *imd;\r | |
94 | uint8 track;\r | |
95 | uint8 wp; /* Disk write protected */\r | |
96 | uint8 sector; /* Current Sector number */\r | |
97 | uint32 sector_wait_count;\r | |
98 | } MDSAD_DRIVE_INFO;\r | |
99 | \r | |
100 | typedef struct {\r | |
101 | uint8 dd; /* Controls density on write DD=1 for double density and DD=0 for single density. */\r | |
102 | uint8 ss; /* Specifies the side of a double-sided diskette. The bottom side (and only side of a single-sided diskette) is selected when SS=0. The second (top) side is selected when SS=1. */\r | |
103 | uint8 dp; /* has shared use. During stepping operations, DP=O specifies a step out and DP=1 specifies a step in. During write operations, write procompensation is invoked if and only if DP=1. */\r | |
104 | uint8 st; /* controls the level of the head step signal to the disk drives. */\r | |
105 | uint8 ds; /* is the drive select field, encoded as follows: */\r | |
106 | /* 0=no drive selected\r | |
107 | * 1=drive 1 selected\r | |
108 | * 2=drive 2 selected\r | |
109 | * 4=drive 3 selected\r | |
110 | * 8=drive 4 selected\r | |
111 | */\r | |
112 | } ORDERS;\r | |
113 | \r | |
114 | typedef struct {\r | |
115 | uint8 sf; /* Sector Flag: set when sector hole detected, reset by software. */\r | |
116 | uint8 ix; /* Index Detect: true if index hole detected during previous sector. */\r | |
117 | uint8 dd; /* Double Density Indicator: true if data being read is encoded in double density. */\r | |
118 | uint8 mo; /* Motor On: true while motor(s) are on. */\r | |
119 | } COM_STATUS;\r | |
120 | \r | |
121 | typedef struct {\r | |
122 | uint8 wi; /* Window: true during 96-microsecond window at beginning of sector. */\r | |
123 | uint8 re; /* Read Enable: true while phase-locked loop is enabled. */\r | |
124 | uint8 sp; /* Spare: reserved for future use. */\r | |
125 | uint8 bd; /* Body: set when sync character is detected. */\r | |
126 | } A_STATUS;\r | |
127 | \r | |
128 | typedef struct {\r | |
129 | uint8 wr; /* Write: true during valid write operation. */\r | |
130 | uint8 sp; /* Spare: reserved for future use. */\r | |
131 | uint8 wp; /* Write Protect: true while the diskette installed in the selected drive is write protected. */\r | |
132 | uint8 t0; /* Track 0: true if selected drive is at track zero. */\r | |
133 | } B_STATUS;\r | |
134 | \r | |
135 | typedef struct {\r | |
136 | uint8 sc; /* Sector Counter: indicates the current sector position. */\r | |
137 | } C_STATUS;\r | |
138 | \r | |
139 | typedef struct {\r | |
140 | PNP_INFO pnp; /* Plug and Play */\r | |
141 | \r | |
142 | ORDERS orders;\r | |
143 | COM_STATUS com_status;\r | |
144 | A_STATUS a_status;\r | |
145 | B_STATUS b_status;\r | |
146 | C_STATUS c_status;\r | |
147 | \r | |
148 | uint8 int_enable; /* Interrupt Enable */\r | |
149 | uint32 datacount; /* Number of data bytes transferred from controller for current sector */\r | |
150 | MDSAD_DRIVE_INFO drive[MDSAD_MAX_DRIVES];\r | |
151 | } MDSAD_INFO;\r | |
152 | \r | |
153 | static MDSAD_INFO mdsad_info_data = { { 0xE800, 1024, 0, 0 } };\r | |
154 | static MDSAD_INFO *mdsad_info = &mdsad_info_data;\r | |
155 | \r | |
156 | static SECTOR_FORMAT sdata;\r | |
157 | \r | |
158 | #define UNIT_V_MDSAD_WLK (UNIT_V_UF + 0) /* write locked */\r | |
159 | #define UNIT_MDSAD_WLK (1 << UNIT_V_MDSAD_WLK)\r | |
160 | #define UNIT_V_MDSAD_VERBOSE (UNIT_V_UF + 1) /* verbose mode, i.e. show error messages */\r | |
161 | #define UNIT_MDSAD_VERBOSE (1 << UNIT_V_MDSAD_VERBOSE)\r | |
162 | #define MDSAD_CAPACITY (70*10*MDSAD_SECTOR_LEN) /* Default North Star Disk Capacity */\r | |
163 | #define IMAGE_TYPE_DSK 1 /* Flat binary "DSK" image file. */\r | |
164 | #define IMAGE_TYPE_IMD 2 /* ImageDisk "IMD" image file. */\r | |
165 | #define IMAGE_TYPE_CPT 3 /* CP/M Transfer "CPT" image file. */\r | |
166 | \r | |
167 | /* MDS-AD Controller Subcases */\r | |
168 | #define MDSAD_READ_ROM 0\r | |
169 | #define MDSAD_WRITE_DATA 1\r | |
170 | #define MDSAD_CTLR_ORDERS 2\r | |
171 | #define MDSAD_CTLR_COMMAND 3\r | |
172 | \r | |
173 | /* MDS-AD Controller Commands */\r | |
174 | #define MDSAD_CMD_NOP 0\r | |
175 | #define MDSAD_CMD_RESET_SF 1\r | |
176 | #define MDSAD_CMD_INTR_DIS 2\r | |
177 | #define MDSAD_CMD_INTR_ARM 3\r | |
178 | #define MDSAD_CMD_SET_BODY 4\r | |
179 | #define MDSAD_CMD_MOTORS_ON 5\r | |
180 | #define MDSAD_CMD_BEGIN_WR 6\r | |
181 | #define MDSAD_CMD_RESET 7\r | |
182 | \r | |
183 | /* MDS-AD Data returned on DI bus */\r | |
184 | #define MDSAD_A_STATUS 1\r | |
185 | #define MDSAD_B_STATUS 2\r | |
186 | #define MDSAD_C_STATUS 3\r | |
187 | #define MDSAD_READ_DATA 4\r | |
188 | \r | |
189 | /* MDS-AD status byte masks */\r | |
190 | /* A-Status */\r | |
191 | #define MDSAD_A_SF 0x80\r | |
192 | #define MDSAD_A_IX 0x40\r | |
193 | #define MDSAD_A_DD 0x20\r | |
194 | #define MDSAD_A_MO 0x10\r | |
195 | #define MDSAD_A_WI 0x08\r | |
196 | #define MDSAD_A_RE 0x04\r | |
197 | #define MDSAD_A_SP 0x02\r | |
198 | #define MDSAD_A_BD 0x01\r | |
199 | \r | |
200 | /* B-Status */\r | |
201 | #define MDSAD_B_SF 0x80\r | |
202 | #define MDSAD_B_IX 0x40\r | |
203 | #define MDSAD_B_DD 0x20\r | |
204 | #define MDSAD_B_MO 0x10\r | |
205 | #define MDSAD_B_WR 0x08\r | |
206 | #define MDSAD_B_SP 0x04\r | |
207 | #define MDSAD_B_WP 0x02\r | |
208 | #define MDSAD_B_T0 0x01\r | |
209 | \r | |
210 | /* C-Status */\r | |
211 | #define MDSAD_C_SF 0x80\r | |
212 | #define MDSAD_C_IX 0x40\r | |
213 | #define MDSAD_C_DD 0x20\r | |
214 | #define MDSAD_C_MO 0x10\r | |
215 | #define MDSAD_C_SC 0x0f\r | |
216 | \r | |
217 | /* Local function prototypes */\r | |
218 | static t_stat mdsad_reset(DEVICE *mdsad_dev);\r | |
219 | static t_stat mdsad_attach(UNIT *uptr, char *cptr);\r | |
220 | static t_stat mdsad_detach(UNIT *uptr);\r | |
221 | static t_stat mdsad_boot(int32 unitno, DEVICE *dptr);\r | |
222 | static uint8 MDSAD_Read(const uint32 Addr);\r | |
223 | \r | |
224 | static int32 mdsaddev(const int32 Addr, const int32 rw, const int32 data);\r | |
225 | \r | |
226 | static int32 trace_level = 0;\r | |
227 | \r | |
228 | static UNIT mdsad_unit[] = {\r | |
229 | { UDATA (NULL, UNIT_FIX + UNIT_ATTABLE + UNIT_DISABLE + UNIT_ROABLE, MDSAD_CAPACITY) },\r | |
230 | { UDATA (NULL, UNIT_FIX + UNIT_ATTABLE + UNIT_DISABLE + UNIT_ROABLE, MDSAD_CAPACITY) },\r | |
231 | { UDATA (NULL, UNIT_FIX + UNIT_ATTABLE + UNIT_DISABLE + UNIT_ROABLE, MDSAD_CAPACITY) },\r | |
232 | { UDATA (NULL, UNIT_FIX + UNIT_ATTABLE + UNIT_DISABLE + UNIT_ROABLE, MDSAD_CAPACITY) }\r | |
233 | };\r | |
234 | \r | |
235 | static REG mdsad_reg[] = {\r | |
236 | { HRDATA (TRACELEVEL, trace_level, 16), },\r | |
237 | { NULL }\r | |
238 | };\r | |
239 | \r | |
240 | static MTAB mdsad_mod[] = {\r | |
241 | { MTAB_XTD|MTAB_VDV, 0, "MEMBASE", "MEMBASE", &set_membase, &show_membase, NULL },\r | |
242 | { UNIT_MDSAD_WLK, 0, "WRTENB", "WRTENB", NULL },\r | |
243 | { UNIT_MDSAD_WLK, UNIT_MDSAD_WLK, "WRTLCK", "WRTLCK", NULL },\r | |
244 | /* quiet, no warning messages */\r | |
245 | { UNIT_MDSAD_VERBOSE, 0, "QUIET", "QUIET", NULL },\r | |
246 | /* verbose, show warning messages */\r | |
247 | { UNIT_MDSAD_VERBOSE, UNIT_MDSAD_VERBOSE, "VERBOSE", "VERBOSE", NULL },\r | |
248 | { 0 }\r | |
249 | };\r | |
250 | \r | |
251 | DEVICE mdsad_dev = {\r | |
252 | "MDSAD", mdsad_unit, mdsad_reg, mdsad_mod,\r | |
253 | MDSAD_MAX_DRIVES, 10, 31, 1, MDSAD_MAX_DRIVES, MDSAD_MAX_DRIVES,\r | |
254 | NULL, NULL, &mdsad_reset,\r | |
255 | &mdsad_boot, &mdsad_attach, &mdsad_detach,\r | |
256 | &mdsad_info_data, (DEV_DISABLE | DEV_DIS), 0,\r | |
257 | NULL, NULL, NULL\r | |
258 | };\r | |
259 | \r | |
260 | /* Reset routine */\r | |
261 | t_stat mdsad_reset(DEVICE *dptr)\r | |
262 | {\r | |
263 | PNP_INFO *pnp = (PNP_INFO *)dptr->ctxt;\r | |
264 | \r | |
265 | if(dptr->flags & DEV_DIS) {\r | |
266 | sim_map_resource(pnp->mem_base, pnp->mem_size,\r | |
267 | RESOURCE_TYPE_MEMORY, &mdsaddev, TRUE);\r | |
268 | } else {\r | |
269 | /* Connect MDSAD at base address */\r | |
270 | if(sim_map_resource(pnp->mem_base, pnp->mem_size,\r | |
271 | RESOURCE_TYPE_MEMORY, &mdsaddev, FALSE) != 0) {\r | |
272 | printf("%s: error mapping resource at 0x%04x\n",\r | |
273 | __FUNCTION__, pnp->mem_base);\r | |
274 | dptr->flags |= DEV_DIS;\r | |
275 | return SCPE_ARG;\r | |
276 | }\r | |
277 | }\r | |
278 | return SCPE_OK;\r | |
279 | }\r | |
280 | \r | |
281 | /* Attach routine */\r | |
282 | t_stat mdsad_attach(UNIT *uptr, char *cptr)\r | |
283 | {\r | |
284 | char header[4];\r | |
285 | t_stat r;\r | |
286 | unsigned int i = 0;\r | |
287 | \r | |
288 | r = attach_unit(uptr, cptr); /* attach unit */\r | |
289 | if(r != SCPE_OK) /* error? */\r | |
290 | return r;\r | |
291 | \r | |
292 | /* Determine length of this disk */\r | |
293 | if(sim_fsize(uptr->fileref) != 0) {\r | |
294 | uptr->capac = sim_fsize(uptr->fileref);\r | |
295 | } else {\r | |
296 | uptr->capac = MDSAD_CAPACITY;\r | |
297 | }\r | |
298 | \r | |
299 | for(i = 0; i < MDSAD_MAX_DRIVES; i++) {\r | |
300 | mdsad_info->drive[i].uptr = &mdsad_dev.units[i];\r | |
301 | }\r | |
302 | \r | |
303 | for(i = 0; i < MDSAD_MAX_DRIVES; i++) {\r | |
304 | if(mdsad_dev.units[i].fileref == uptr->fileref) {\r | |
305 | break;\r | |
306 | }\r | |
307 | }\r | |
308 | \r | |
309 | /* Default for new file is DSK */\r | |
310 | uptr->u3 = IMAGE_TYPE_DSK;\r | |
311 | \r | |
312 | if(uptr->capac > 0) {\r | |
313 | fgets(header, 4, uptr->fileref);\r | |
314 | if(!strcmp(header, "IMD")) {\r | |
315 | uptr->u3 = IMAGE_TYPE_IMD;\r | |
316 | } else if(!strcmp(header, "CPT")) {\r | |
317 | printf("CPT images not yet supported\n");\r | |
318 | uptr->u3 = IMAGE_TYPE_CPT;\r | |
319 | mdsad_detach(uptr);\r | |
320 | return SCPE_OPENERR;\r | |
321 | } else {\r | |
322 | uptr->u3 = IMAGE_TYPE_DSK;\r | |
323 | }\r | |
324 | }\r | |
325 | \r | |
326 | if (uptr->flags & UNIT_MDSAD_VERBOSE)\r | |
327 | printf("MDSAD%d, attached to '%s', type=%s, len=%d\n", i, cptr,\r | |
328 | uptr->u3 == IMAGE_TYPE_IMD ? "IMD" : uptr->u3 == IMAGE_TYPE_CPT ? "CPT" : "DSK",\r | |
329 | uptr->capac);\r | |
330 | \r | |
331 | if(uptr->u3 == IMAGE_TYPE_IMD) {\r | |
332 | if(uptr->capac < 318000) {\r | |
333 | printf("Cannot create IMD files with SIMH.\nCopy an existing file and format it with CP/M.\n");\r | |
334 | mdsad_detach(uptr);\r | |
335 | return SCPE_OPENERR;\r | |
336 | }\r | |
337 | \r | |
338 | if (uptr->flags & UNIT_MDSAD_VERBOSE)\r | |
339 | printf("--------------------------------------------------------\n");\r | |
340 | mdsad_info->drive[i].imd = diskOpen((uptr->fileref), (uptr->flags & UNIT_MDSAD_VERBOSE));\r | |
341 | if (uptr->flags & UNIT_MDSAD_VERBOSE)\r | |
342 | printf("\n");\r | |
343 | } else {\r | |
344 | mdsad_info->drive[i].imd = NULL;\r | |
345 | }\r | |
346 | \r | |
347 | return SCPE_OK;\r | |
348 | }\r | |
349 | \r | |
350 | \r | |
351 | /* Detach routine */\r | |
352 | t_stat mdsad_detach(UNIT *uptr)\r | |
353 | {\r | |
354 | t_stat r;\r | |
355 | int8 i;\r | |
356 | \r | |
357 | for(i = 0; i < MDSAD_MAX_DRIVES; i++) {\r | |
358 | if(mdsad_dev.units[i].fileref == uptr->fileref) {\r | |
359 | break;\r | |
360 | }\r | |
361 | }\r | |
362 | \r | |
363 | if (i >= MDSAD_MAX_DRIVES) return SCPE_ARG;\r | |
364 | \r | |
365 | DBG_PRINT(("Detach MDSAD%d\n", i));\r | |
366 | diskClose(mdsad_info->drive[i].imd);\r | |
367 | \r | |
368 | r = detach_unit(uptr); /* detach unit */\r | |
369 | if(r != SCPE_OK)\r | |
370 | return r;\r | |
371 | \r | |
372 | mdsad_dev.units[i].fileref = NULL; /* psco check if ok */\r | |
373 | return SCPE_OK;\r | |
374 | }\r | |
375 | \r | |
376 | static t_stat mdsad_boot(int32 unitno, DEVICE *dptr)\r | |
377 | {\r | |
378 | \r | |
379 | PNP_INFO *pnp = (PNP_INFO *)dptr->ctxt;\r | |
380 | \r | |
381 | DBG_PRINT(("Booting MDSAD Controller at 0x%04x, unit %d" NLP,\r | |
382 | pnp->mem_base+1+(unitno&3), unitno & 3));\r | |
383 | \r | |
384 | /* Unit 3 can't be booted yet. This involves modifying the A register. */\r | |
385 | *((int32 *) sim_PC->loc) = pnp->mem_base+1+(unitno&3);\r | |
386 | return SCPE_OK;\r | |
387 | }\r | |
388 | \r | |
389 | static int32 mdsaddev(const int32 Addr, const int32 rw, const int32 data)\r | |
390 | {\r | |
391 | if(rw == 0) { /* Read */\r | |
392 | return(MDSAD_Read(Addr));\r | |
393 | } else { /* Write */\r | |
394 | DBG_PRINT(("MDSAD: write attempt at 0x%04x ignored." NLP, Addr));\r | |
395 | return (-1);\r | |
396 | }\r | |
397 | }\r | |
398 | \r | |
399 | /* This ROM image is taken from the Solace Emulator, which uses */\r | |
400 | /* a ROM from a "Micro Complex Phase Lock II" dual- */\r | |
401 | /* density controller card. It is supposedly compatible with the */\r | |
402 | /* Northstar-designed dual density floppy controller. It has the */\r | |
403 | /* interesting property that by jumping to base_addr+0 (or +1) and */\r | |
404 | /* it boots from floppy 0; jump to base_addr+2 you boot from floppy 1; */\r | |
405 | /* jump to base_addr+3 and you boot from floppy 2. You can boot from */\r | |
406 | /* floppy 3 by loading A with 08H and jumping to base_addr+7. */\r | |
407 | static uint8 mdsad_rom[] = {\r | |
408 | 0x44, 0x01, 0x01, 0x01, 0x82, 0x84, 0x78, 0xE6, 0x07, 0x4F, 0x00, 0x31, 0x30, 0x00, 0x21, 0x29, /* 0x00 */\r | |
409 | 0x00, 0xE5, 0x21, 0x2C, 0xC2, 0xE5, 0x21, 0x77, 0x13, 0xE5, 0x21, 0xC9, 0x1A, 0xE5, 0xCD, 0x28, /* 0x10 */\r | |
410 | 0x00, 0x21, 0x30, 0x00, 0x5B, 0x52, 0x44, 0x54, 0x5D, 0x3A, 0x27, 0x00, 0x57, 0xC3, 0x29, 0x00, /* 0x20 */\r | |
411 | 0x14, 0x14, 0x1E, 0x15, 0x1A, 0x26, 0x30, 0xCD, 0xD9, 0x00, 0x42, 0x05, 0x0A, 0xCD, 0xD4, 0x00, /* 0x30 */\r | |
412 | 0x2E, 0x0D, 0x2D, 0xCA, 0x43, 0x00, 0xCD, 0xD7, 0x00, 0x1A, 0xE6, 0x40, 0xCA, 0x42, 0x00, 0x3E, /* 0x40 */\r | |
413 | 0x0A, 0xF5, 0xCD, 0xC1, 0x00, 0x1E, 0x20, 0x1A, 0xE6, 0x01, 0xC2, 0x63, 0x00, 0xCD, 0xC5, 0x00, /* 0x50 */\r | |
414 | 0xC3, 0x55, 0x00, 0x2E, 0x04, 0xCD, 0xE7, 0x00, 0x1E, 0x10, 0x1A, 0xE6, 0x04, 0xCA, 0x68, 0x00, /* 0x60 */\r | |
415 | 0x3E, 0x09, 0x3D, 0xC2, 0x72, 0x00, 0x1A, 0xE6, 0x20, 0xC2, 0x84, 0x00, 0xCD, 0xC1, 0x00, 0x2E, /* 0x70 */\r | |
416 | 0x08, 0xCD, 0xE7, 0x00, 0x06, 0xA3, 0x1E, 0x10, 0x05, 0xCA, 0xF4, 0x00, 0x1A, 0x0F, 0xD2, 0x88, /* 0x80 */\r | |
417 | 0x00, 0x1E, 0x40, 0x1A, 0x67, 0x2E, 0x00, 0x36, 0x59, 0x07, 0x47, 0x23, 0x1A, 0x77, 0xA8, 0x07, /* 0x90 */\r | |
418 | 0x47, 0x2C, 0xC2, 0x9C, 0x00, 0x24, 0x1A, 0x77, 0xA8, 0x07, 0x47, 0x2C, 0xC2, 0xA6, 0x00, 0x1A, /* 0xA0 */\r | |
419 | 0xA8, 0xC2, 0xF4, 0x00, 0x25, 0x2E, 0x03, 0x71, 0x2D, 0x36, 0x59, 0xC2, 0xB8, 0x00, 0x2E, 0x0A, /* 0xB0 */\r | |
420 | 0xE9, 0x3E, 0x20, 0x81, 0x4F, 0x0A, 0x3E, 0x10, 0x81, 0x4F, 0x0A, 0x3E, 0xF0, 0x81, 0x4F, 0x0A, /* 0xC0 */\r | |
421 | 0x79, 0xE6, 0x0F, 0x4F, 0xCD, 0xD7, 0x00, 0x26, 0x01, 0x1E, 0x11, 0x1A, 0x1D, 0x1A, 0xB7, 0xF2, /* 0xD0 */\r | |
422 | 0xDD, 0x00, 0x25, 0xC2, 0xD9, 0x00, 0xC9, 0xCD, 0xD7, 0x00, 0x1E, 0x35, 0x1A, 0xE6, 0x0F, 0xBD, /* 0xE0 */\r | |
423 | 0xC2, 0xE7, 0x00, 0xC9, 0xF1, 0x3D, 0xF5, 0xC2, 0x55, 0x00, 0xC3, 0xFA, 0x00, 0x52, 0x44, 0x54 /* 0xF0 */\r | |
424 | };\r | |
425 | \r | |
426 | static void showdata(int32 isRead) {\r | |
427 | int32 i;\r | |
428 | printf("MDSAD: " ADDRESS_FORMAT " %s Sector =" NLP "\t", PCX, isRead ? "Read" : "Write");\r | |
429 | for(i=0; i < MDSAD_SECTOR_LEN; i++) {\r | |
430 | printf("%02X ", sdata.u.data[i]);\r | |
431 | if(((i+1) & 0xf) == 0) printf(NLP "\t");\r | |
432 | }\r | |
433 | printf(NLP);\r | |
434 | }\r | |
435 | \r | |
436 | static int checksum;\r | |
437 | static uint32 sec_offset;\r | |
438 | \r | |
439 | static uint8 MDSAD_Read(const uint32 Addr)\r | |
440 | {\r | |
441 | uint8 cData;\r | |
442 | uint8 ds;\r | |
443 | MDSAD_DRIVE_INFO *pDrive;\r | |
444 | \r | |
445 | cData = 0x00;\r | |
446 | \r | |
447 | pDrive = &mdsad_info->drive[mdsad_info->orders.ds];\r | |
448 | \r | |
449 | switch( (Addr & 0x300) >> 8 ) {\r | |
450 | case MDSAD_READ_ROM:\r | |
451 | cData = mdsad_rom[Addr & 0xFF];\r | |
452 | break;\r | |
453 | case MDSAD_WRITE_DATA:\r | |
454 | {\r | |
455 | unsigned int flags = 0;\r | |
456 | unsigned int writelen;\r | |
457 | \r | |
458 | if(mdsad_info->datacount == 0) {\r | |
459 | TRACE_PRINT(WR_DATA_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
460 | " WRITE Start: Drive: %d, Track=%d, Head=%d, Sector=%d" NLP,\r | |
461 | PCX,\r | |
462 | mdsad_info->orders.ds,\r | |
463 | pDrive->track,\r | |
464 | mdsad_info->orders.ss,\r | |
465 | pDrive->sector));\r | |
466 | \r | |
467 | sec_offset = (pDrive->track * (MDSAD_SECTOR_LEN * MDSAD_SECTORS_PER_TRACK)) +\r | |
468 | (mdsad_info->orders.ss * ((MDSAD_SECTOR_LEN * MDSAD_SECTORS_PER_TRACK) * MDSAD_TRACKS)) +\r | |
469 | (pDrive->sector * MDSAD_SECTOR_LEN);\r | |
470 | \r | |
471 | }\r | |
472 | \r | |
473 | DBG_PRINT(("MDSAD: " ADDRESS_FORMAT\r | |
474 | " WRITE-DATA[offset:%06x+%03x]=%02x" NLP,\r | |
475 | PCX, sec_offset, mdsad_info->datacount, Addr & 0xFF));\r | |
476 | mdsad_info->datacount++;\r | |
477 | if(mdsad_info->datacount < MDSAD_RAW_LEN)\r | |
478 | sdata.raw[mdsad_info->datacount] = Addr & 0xFF;\r | |
479 | \r | |
480 | if(mdsad_info->datacount == (MDSAD_RAW_LEN - 1)) {\r | |
481 | TRACE_PRINT(WR_DATA_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
482 | " Write Complete" NLP, PCX));\r | |
483 | \r | |
484 | if ((pDrive->uptr == NULL) || (pDrive->uptr->fileref == NULL)) {\r | |
485 | TRACE_PRINT(WR_DATA_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
486 | " Drive: %d not attached - write ignored." NLP,\r | |
487 | PCX, mdsad_info->orders.ds));\r | |
488 | return 0x00;\r | |
489 | }\r | |
490 | if(trace_level & WR_DATA_DETAIL_MSG) showdata(FALSE);\r | |
491 | switch((pDrive->uptr)->u3)\r | |
492 | {\r | |
493 | case IMAGE_TYPE_IMD:\r | |
494 | if(pDrive->imd == NULL) {\r | |
495 | printf(".imd is NULL!" NLP);\r | |
496 | }\r | |
497 | sectWrite(pDrive->imd,\r | |
498 | pDrive->track,\r | |
499 | mdsad_info->orders.ss,\r | |
500 | pDrive->sector,\r | |
501 | sdata.u.data,\r | |
502 | MDSAD_SECTOR_LEN,\r | |
503 | &flags,\r | |
504 | &writelen);\r | |
505 | break;\r | |
506 | case IMAGE_TYPE_DSK:\r | |
507 | if(pDrive->uptr->fileref == NULL) {\r | |
508 | printf(".fileref is NULL!" NLP);\r | |
509 | } else {\r | |
510 | fseek((pDrive->uptr)->fileref, sec_offset, SEEK_SET);\r | |
511 | fwrite(sdata.u.data, MDSAD_SECTOR_LEN, 1,\r | |
512 | (pDrive->uptr)->fileref);\r | |
513 | }\r | |
514 | break;\r | |
515 | case IMAGE_TYPE_CPT:\r | |
516 | printf("%s: CPT Format not supported" NLP, __FUNCTION__);\r | |
517 | break;\r | |
518 | default:\r | |
519 | printf("%s: Unknown image Format" NLP, __FUNCTION__);\r | |
520 | break;\r | |
521 | }\r | |
522 | }\r | |
523 | break;\r | |
524 | }\r | |
525 | case MDSAD_CTLR_ORDERS:\r | |
526 | mdsad_info->orders.dd = (Addr & 0x80) >> 7;\r | |
527 | mdsad_info->orders.ss = (Addr & 0x40) >> 6;\r | |
528 | mdsad_info->orders.dp = (Addr & 0x20) >> 5;\r | |
529 | mdsad_info->orders.st = (Addr & 0x10) >> 4;\r | |
530 | mdsad_info->orders.ds = (Addr & 0x0F);\r | |
531 | \r | |
532 | ds = mdsad_info->orders.ds;\r | |
533 | switch(mdsad_info->orders.ds) {\r | |
534 | case 0:\r | |
535 | case 1:\r | |
536 | mdsad_info->orders.ds = 0;\r | |
537 | break;\r | |
538 | case 2:\r | |
539 | mdsad_info->orders.ds = 1;\r | |
540 | break;\r | |
541 | case 4:\r | |
542 | mdsad_info->orders.ds = 2;\r | |
543 | break;\r | |
544 | case 8:\r | |
545 | mdsad_info->orders.ds = 3;\r | |
546 | break;\r | |
547 | }\r | |
548 | \r | |
549 | TRACE_PRINT(ORDERS_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
550 | " Controller Orders: Drive=%x[%x], DD=%d, SS=%d, DP=%d, ST=%d" NLP,\r | |
551 | PCX,\r | |
552 | mdsad_info->orders.ds, ds,\r | |
553 | mdsad_info->orders.dd,\r | |
554 | mdsad_info->orders.ss,\r | |
555 | mdsad_info->orders.dp,\r | |
556 | mdsad_info->orders.st));\r | |
557 | \r | |
558 | /* use latest selected drive */\r | |
559 | pDrive = &mdsad_info->drive[mdsad_info->orders.ds];\r | |
560 | \r | |
561 | if(mdsad_info->orders.st == 1) {\r | |
562 | if(mdsad_info->orders.dp == 0) {\r | |
563 | TRACE_PRINT(SEEK_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
564 | " Step out: Track=%d%s" NLP, PCX, pDrive->track,\r | |
565 | pDrive->track == 0 ? "[Warn: already at 0]" : ""));\r | |
566 | if(pDrive->track > 0) /* anything to do? */\r | |
567 | pDrive->track--;\r | |
568 | } else {\r | |
569 | TRACE_PRINT(SEEK_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
570 | " Step in: Track=%d%s" NLP, PCX, pDrive->track,\r | |
571 | pDrive->track == (MDSAD_TRACKS - 1) ?\r | |
572 | "[Warn: already at highest track]" : ""));\r | |
573 | if(pDrive->track < (MDSAD_TRACKS - 1)) /* anything to do? */\r | |
574 | pDrive->track++;\r | |
575 | }\r | |
576 | }\r | |
577 | /* always update t0 */\r | |
578 | mdsad_info->b_status.t0 = (pDrive->track == 0);\r | |
579 | break;\r | |
580 | case MDSAD_CTLR_COMMAND:\r | |
581 | /* TRACE_PRINT(CMD_MSG, ("MDSAD: " ADDRESS_FORMAT " DM=%x" NLP, PCX, (Addr & 0xF0) >> 4)); */\r | |
582 | switch(Addr & 0x0F) {\r | |
583 | case MDSAD_CMD_MOTORS_ON:\r | |
584 | TRACE_PRINT(CMD_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
585 | " CMD=Motors On" NLP, PCX));\r | |
586 | mdsad_info->com_status.mo = 1; /* Turn motors on */\r | |
587 | break;\r | |
588 | \r | |
589 | case MDSAD_CMD_NOP:\r | |
590 | pDrive->sector_wait_count++;\r | |
591 | switch(pDrive->sector_wait_count) {\r | |
592 | case 10:\r | |
593 | {\r | |
594 | mdsad_info->com_status.sf = 1;\r | |
595 | mdsad_info->a_status.wi = 0;\r | |
596 | mdsad_info->a_status.re = 0;\r | |
597 | mdsad_info->a_status.bd = 0;\r | |
598 | pDrive->sector_wait_count = 0;\r | |
599 | pDrive->sector++;\r | |
600 | if(pDrive->sector >= MDSAD_SECTORS_PER_TRACK) {\r | |
601 | pDrive->sector = 0;\r | |
602 | mdsad_info->com_status.ix = 1;\r | |
603 | } else {\r | |
604 | mdsad_info->com_status.ix = 0;\r | |
605 | }\r | |
606 | break;\r | |
607 | }\r | |
608 | case 2:\r | |
609 | mdsad_info->a_status.wi = 1;\r | |
610 | break;\r | |
611 | case 3:\r | |
612 | mdsad_info->a_status.re = 1;\r | |
613 | mdsad_info->a_status.bd = 1;\r | |
614 | break;\r | |
615 | default:\r | |
616 | break;\r | |
617 | }\r | |
618 | break;\r | |
619 | case MDSAD_CMD_RESET_SF:\r | |
620 | TRACE_PRINT(CMD_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
621 | " CMD=Reset Sector Flag" NLP, PCX));\r | |
622 | mdsad_info->com_status.sf = 0;\r | |
623 | mdsad_info->datacount = 0;\r | |
624 | break;\r | |
625 | case MDSAD_CMD_INTR_DIS:\r | |
626 | TRACE_PRINT(CMD_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
627 | " CMD=Disarm Interrupt" NLP, PCX));\r | |
628 | mdsad_info->int_enable = 0;\r | |
629 | break;\r | |
630 | case MDSAD_CMD_INTR_ARM:\r | |
631 | TRACE_PRINT(CMD_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
632 | " CMD=Arm Interrupt" NLP, PCX));\r | |
633 | mdsad_info->int_enable = 1;\r | |
634 | break;\r | |
635 | case MDSAD_CMD_SET_BODY:\r | |
636 | TRACE_PRINT(CMD_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
637 | " CMD=Set Body (Diagnostic)" NLP, PCX));\r | |
638 | break;\r | |
639 | case MDSAD_CMD_BEGIN_WR:\r | |
640 | TRACE_PRINT(CMD_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
641 | " CMD=Begin Write" NLP, PCX));\r | |
642 | break;\r | |
643 | case MDSAD_CMD_RESET:\r | |
644 | TRACE_PRINT(CMD_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
645 | " CMD=Reset Controller" NLP, PCX));\r | |
646 | mdsad_info->com_status.mo = 0; /* Turn motors off */\r | |
647 | break;\r | |
648 | default:\r | |
649 | TRACE_PRINT(CMD_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
650 | " Unsupported CMD=0x%x" NLP, PCX, Addr & 0x0F));\r | |
651 | break;\r | |
652 | }\r | |
653 | \r | |
654 | /* Always Double-Density for now... */\r | |
655 | mdsad_info->com_status.dd = 1;\r | |
656 | \r | |
657 | cData = (mdsad_info->com_status.sf & 1) << 7;\r | |
658 | cData |= (mdsad_info->com_status.ix & 1) << 6;\r | |
659 | cData |= (mdsad_info->com_status.dd & 1) << 5;\r | |
660 | cData |= (mdsad_info->com_status.mo & 1) << 4;\r | |
661 | \r | |
662 | mdsad_info->c_status.sc = pDrive->sector;\r | |
663 | \r | |
664 | switch( (Addr & 0xF0) >> 4) {\r | |
665 | case MDSAD_A_STATUS: /* A-STATUS */\r | |
666 | cData |= (mdsad_info->a_status.wi & 1) << 3;\r | |
667 | cData |= (mdsad_info->a_status.re & 1) << 2;\r | |
668 | cData |= (mdsad_info->a_status.sp & 1) << 1;\r | |
669 | cData |= (mdsad_info->a_status.bd & 1);\r | |
670 | TRACE_PRINT(STATUS_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
671 | " A-Status = <%s %s %s %s %s %s %s %s>" NLP, PCX,\r | |
672 | cData & MDSAD_A_SF ? "SF" : " ",\r | |
673 | cData & MDSAD_A_IX ? "IX" : " ",\r | |
674 | cData & MDSAD_A_DD ? "DD" : " ",\r | |
675 | cData & MDSAD_A_MO ? "MO" : " ",\r | |
676 | cData & MDSAD_A_WI ? "WI" : " ",\r | |
677 | cData & MDSAD_A_RE ? "RE" : " ",\r | |
678 | cData & MDSAD_A_SP ? "SP" : " ",\r | |
679 | cData & MDSAD_A_BD ? "BD" : " "));\r | |
680 | break;\r | |
681 | case MDSAD_B_STATUS: /* B-STATUS */\r | |
682 | cData |= (mdsad_info->b_status.wr & 1) << 3;\r | |
683 | cData |= (mdsad_info->b_status.sp & 1) << 2;\r | |
684 | cData |= (mdsad_info->b_status.wp & 1) << 1;\r | |
685 | cData |= (mdsad_info->b_status.t0 & 1);\r | |
686 | TRACE_PRINT(STATUS_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
687 | " B-Status = <%s %s %s %s %s %s %s %s>" NLP, PCX,\r | |
688 | cData & MDSAD_B_SF ? "SF" : " ",\r | |
689 | cData & MDSAD_B_IX ? "IX" : " ",\r | |
690 | cData & MDSAD_B_DD ? "DD" : " ",\r | |
691 | cData & MDSAD_B_MO ? "MO" : " ",\r | |
692 | cData & MDSAD_B_WR ? "WR" : " ",\r | |
693 | cData & MDSAD_B_SP ? "SP" : " ",\r | |
694 | cData & MDSAD_B_WP ? "WP" : " ",\r | |
695 | cData & MDSAD_B_T0 ? "T0" : " "));\r | |
696 | break;\r | |
697 | case MDSAD_C_STATUS: /* C-STATUS */\r | |
698 | cData |= (mdsad_info->c_status.sc & 0xF);\r | |
699 | TRACE_PRINT(STATUS_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
700 | " C-Status = <%s %s %s %s %i>" NLP, PCX,\r | |
701 | cData & MDSAD_C_SF ? "SF" : " ",\r | |
702 | cData & MDSAD_C_IX ? "IX" : " ",\r | |
703 | cData & MDSAD_C_DD ? "DD" : " ",\r | |
704 | cData & MDSAD_C_MO ? "MO" : " ", cData & MDSAD_C_SC));\r | |
705 | break;\r | |
706 | case MDSAD_READ_DATA: /* READ DATA */\r | |
707 | {\r | |
708 | unsigned int flags;\r | |
709 | unsigned int readlen;\r | |
710 | \r | |
711 | if(mdsad_info->datacount == 0) {\r | |
712 | TRACE_PRINT(RD_DATA_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
713 | " READ Start: Drive: %d, Track=%d, Head=%d, Sector=%d" NLP,\r | |
714 | PCX,\r | |
715 | mdsad_info->orders.ds,\r | |
716 | pDrive->track,\r | |
717 | mdsad_info->orders.ss,\r | |
718 | pDrive->sector));\r | |
719 | \r | |
720 | checksum = 0;\r | |
721 | \r | |
722 | sec_offset = (pDrive->track * (MDSAD_SECTOR_LEN * MDSAD_SECTORS_PER_TRACK)) +\r | |
723 | (mdsad_info->orders.ss * ((MDSAD_SECTOR_LEN * MDSAD_SECTORS_PER_TRACK) * MDSAD_TRACKS)) +\r | |
724 | (pDrive->sector * MDSAD_SECTOR_LEN);\r | |
725 | \r | |
726 | if ((pDrive->uptr == NULL) ||\r | |
727 | (pDrive->uptr->fileref == NULL)) {\r | |
728 | TRACE_PRINT(RD_DATA_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
729 | " Drive: %d not attached - read ignored." NLP,\r | |
730 | PCX, mdsad_info->orders.ds));\r | |
731 | return 0xe5;\r | |
732 | }\r | |
733 | \r | |
734 | switch((pDrive->uptr)->u3)\r | |
735 | {\r | |
736 | case IMAGE_TYPE_IMD:\r | |
737 | if(pDrive->imd == NULL) {\r | |
738 | printf(".imd is NULL!" NLP);\r | |
739 | }\r | |
740 | /* DBG_PRINT(("%s: Read: imd=%p" NLP, __FUNCTION__, mdsad_info->drive[mdsad_info->sel_drive].imd)); */\r | |
741 | sectRead(pDrive->imd,\r | |
742 | pDrive->track,\r | |
743 | mdsad_info->orders.ss,\r | |
744 | pDrive->sector,\r | |
745 | sdata.u.data,\r | |
746 | MDSAD_SECTOR_LEN,\r | |
747 | &flags,\r | |
748 | &readlen);\r | |
749 | break;\r | |
750 | case IMAGE_TYPE_DSK:\r | |
751 | if(pDrive->uptr->fileref == NULL) {\r | |
752 | printf(".fileref is NULL!" NLP);\r | |
753 | } else {\r | |
754 | fseek((pDrive->uptr)->fileref,\r | |
755 | sec_offset, SEEK_SET);\r | |
756 | fread(&sdata.u.data[0], MDSAD_SECTOR_LEN,\r | |
757 | 1, (pDrive->uptr)->fileref);\r | |
758 | }\r | |
759 | break;\r | |
760 | case IMAGE_TYPE_CPT:\r | |
761 | printf("%s: CPT Format not supported"\r | |
762 | NLP, __FUNCTION__);\r | |
763 | break;\r | |
764 | default:\r | |
765 | printf("%s: Unknown image Format"\r | |
766 | NLP, __FUNCTION__);\r | |
767 | break;\r | |
768 | }\r | |
769 | if(trace_level & RD_DATA_DETAIL_MSG) showdata(TRUE);\r | |
770 | }\r | |
771 | \r | |
772 | if(mdsad_info->datacount < 0x200) {\r | |
773 | cData = sdata.u.data[mdsad_info->datacount];\r | |
774 | \r | |
775 | /* Exclusive OR */\r | |
776 | checksum ^= cData;\r | |
777 | /* Rotate Left Circular */\r | |
778 | checksum = ((checksum << 1) | ((checksum & 0x80) != 0)) & 0xff;\r | |
779 | \r | |
780 | DBG_PRINT(("MDSAD: " ADDRESS_FORMAT\r | |
781 | " READ-DATA[offset:%06x+%03x]=%02x" NLP,\r | |
782 | PCX, sec_offset, mdsad_info->datacount, cData));\r | |
783 | } else { /* checksum */\r | |
784 | cData = checksum;\r | |
785 | TRACE_PRINT(RD_DATA_MSG, ("MDSAD: " ADDRESS_FORMAT\r | |
786 | " READ-DATA: Checksum is: 0x%02x" NLP,\r | |
787 | PCX, cData));\r | |
788 | }\r | |
789 | \r | |
790 | mdsad_info->datacount++;\r | |
791 | break;\r | |
792 | }\r | |
793 | default:\r | |
794 | DBG_PRINT(("MDSAD: " ADDRESS_FORMAT\r | |
795 | " Invalid DM=%x" NLP, PCX, Addr & 0xF));\r | |
796 | break;\r | |
797 | }\r | |
798 | \r | |
799 | break;\r | |
800 | }\r | |
801 | return (cData);\r | |
802 | }\r |