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First Commit of my working state
[simh.git] / NOVA / nova_dkp.c
1 /* nova_dkp.c: NOVA moving head disk simulator
2
3 Copyright (c) 1993-2008, Robert M. Supnik
4
5 Permission is hereby granted, free of charge, to any person obtaining a
6 copy of this software and associated documentation files (the "Software"),
7 to deal in the Software without restriction, including without limitation
8 the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 and/or sell copies of the Software, and to permit persons to whom the
10 Software is furnished to do so, subject to the following conditions:
11
12 The above copyright notice and this permission notice shall be included in
13 all copies or substantial portions of the Software.
14
15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
19 IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21
22 Except as contained in this notice, the name of Robert M Supnik shall not be
23 used in advertising or otherwise to promote the sale, use or other dealings
24 in this Software without prior written authorization from Robert M Supnik.
25
26 dkp moving head disk
27
28 04-Jul-04 BKR device name changed to DG's DKP from DEC's DP,
29 DEV_SET/CLR/INTR macro use started,
30 fixed 'P' pulse code and secret quirks,
31 added 6097 diag and size support,
32 fixed losing unit drive type during unit change,
33 tightened sector size determination calculations,
34 controller DONE flag handling fixed,
35 fixed cylinder overflow test error,
36 seek error code fixed,
37 restructured dkp_go() and dkp_svc() routines
38 (for known future fixes needed),
39 fixed DIA status calculation,
40 fixed DKP read/write loop to properly emulate DG cylinder and sector overflows,
41 added trace facility,
42 changed 'stime' calculation to force delay time if no cylinders are crossed
43 (this fixes some DG code that assumes disk seek takes some time),
44 fixed boot code to match DG hardware standard
45 04-Jan-04 RMS Changed attach routine to use sim_fsize
46 28-Nov-03 CEO Boot from DP now puts device address in SR
47 24-Nov-03 CEO Added support for disk sizing on 6099/6103
48 19-Nov-03 CEO Corrected major DMA Mapping bug
49 25-Apr-03 RMS Revised autosizing
50 08-Oct-02 RMS Added DIB
51 06-Jan-02 RMS Revised enable/disable support
52 30-Nov-01 RMS Added read only unit, extended SET/SHOW support
53 24-Nov-01 RMS Changed FLG, CAPAC to arrays
54 26-Apr-01 RMS Added device enable/disable support
55 12-Dec-00 RMS Added Eclipse support from Charles Owen
56 15-Oct-00 RMS Editorial changes
57 14-Apr-99 RMS Changed t_addr to unsigned
58 15-Sep-97 RMS Fixed bug in DIB/DOB for new disks
59 15-Sep-97 RMS Fixed bug in cylinder extraction (found by Charles Owen)
60 10-Sep-97 RMS Fixed bug in error reporting (found by Charles Owen)
61 25-Nov-96 RMS Defaulted to autosize
62 29-Jun-96 RMS Added unit disable support
63 */
64
65 #include "nova_defs.h"
66
67 #define DKP_NUMDR 4 /* #drives */
68 #define DKP_NUMWD 256 /* words/sector */
69 #define UNIT_V_WLK (UNIT_V_UF + 0) /* write locked */
70 #define UNIT_V_DTYPE (UNIT_V_UF + 1) /* disk type */
71 #define UNIT_M_DTYPE 017
72 #define UNIT_V_AUTO (UNIT_V_UF + 5) /* autosize */
73 #define UNIT_WLK (1 << UNIT_V_WLK)
74 #define UNIT_DTYPE (UNIT_M_DTYPE << UNIT_V_DTYPE)
75 #define UNIT_AUTO (1 << UNIT_V_AUTO)
76 #define GET_DTYPE(x) (((x) >> UNIT_V_DTYPE) & UNIT_M_DTYPE)
77 #define FUNC u3 /* function */
78 #define CYL u4 /* on cylinder */
79 #define UNIT_WPRT (UNIT_WLK | UNIT_RO) /* write protect */
80
81 /* Unit, surface, sector, count register
82
83 Original format: 2b, 6b, 4b, 4b
84 Revised format: 2b, 5b, 5b, 4b
85 */
86
87 #define USSC_V_COUNT 0 /* count */
88 #define USSC_M_COUNT 017
89 #define USSC_V_OSECTOR 4 /* old: sector */
90 #define USSC_M_OSECTOR 017
91 #define USSC_V_OSURFACE 8 /* old: surface */
92 #define USSC_M_OSURFACE 077
93 #define USSC_V_NSECTOR 4 /* new: sector */
94 #define USSC_M_NSECTOR 037
95 #define USSC_V_NSURFACE 9 /* new: surface */
96 #define USSC_M_NSURFACE 037
97 #define USSC_V_UNIT 14 /* unit */
98 #define USSC_M_UNIT 03
99 #define USSC_UNIT (USSC_M_UNIT << USSC_V_UNIT)
100 #define GET_COUNT(x) (((x) >> USSC_V_COUNT) & USSC_M_COUNT)
101 #define GET_SECT(x,dt) ((drv_tab[dt].newf)? \
102 (((x) >> USSC_V_NSECTOR) & USSC_M_NSECTOR): \
103 (((x) >> USSC_V_OSECTOR) & USSC_M_OSECTOR) )
104 #define GET_SURF(x,dt) ((drv_tab[dt].newf)? \
105 (((x) >> USSC_V_NSURFACE) & USSC_M_NSURFACE): \
106 (((x) >> USSC_V_OSURFACE) & USSC_M_OSURFACE) )
107 #define GET_UNIT(x) (((x) >> USSC_V_UNIT) & USSC_M_UNIT)
108
109 /* Flags, command, cylinder register
110
111 Original format: 5b, 2b, 1b + 8b (surrounding command)
112 Revised format: 5b, 2b, 9b
113 */
114
115 #define FCCY_V_OCYL 0 /* old: cylinder */
116 #define FCCY_M_OCYL 0377
117 #define FCCY_V_OCMD 8 /* old: command */
118 #define FCCY_M_OCMD 3
119 #define FCCY_V_OCEX 10 /* old: cyl extend */
120 #define FCCY_OCEX (1 << FCCY_V_OCEX)
121 #define FCCY_V_NCYL 0 /* new: cylinder */
122 #define FCCY_M_NCYL 0777
123 #define FCCY_V_NCMD 9 /* new: command */
124 #define FCCY_M_NCMD 3
125 #define FCCY_READ 0
126 #define FCCY_WRITE 1
127 #define FCCY_SEEK 2
128 #define FCCY_RECAL 3
129 #define FCCY_FLAGS 0174000 /* flags */
130
131 #define GET_CMD(x,dt) ((drv_tab[dt].newf)? \
132 (((x) >> FCCY_V_NCMD) & FCCY_M_NCMD): \
133 (((x) >> FCCY_V_OCMD) & FCCY_M_OCMD) )
134
135 #define SET_CMD(x,dt) dkp_fccy = (dkp_fccy & ((drv_tab[dt].newf)? \
136 (FCCY_M_NCMD << FCCY_V_NCMD) : (FCCY_M_OCMD << FCCY_V_OCMD))) | \
137 ((drv_tab[dt].newf)? \
138 (((x) & FCCY_M_NCMD) << FCCY_V_NCMD): \
139 (((x) & FCCY_M_OCMD) << FCCY_V_OCMD) )
140
141 #define GET_CYL(x,dt) ((drv_tab[dt].newf)? \
142 (((x) >> FCCY_V_NCYL) & FCCY_M_NCYL): \
143 ((((x) >> FCCY_V_OCYL) & FCCY_M_OCYL) | \
144 ((dt != TYPE_D44)? 0: \
145 (((x) & FCCY_OCEX) >> (FCCY_V_OCEX - FCCY_V_OCMD)))) )
146
147
148 /* (Warning: no sector or surface masking is done!) */
149
150 #define DKP_UPDATE_USSC( type, count, surf, sect ) \
151 dkp_ussc = (dkp_ussc & USSC_UNIT) \
152 | ((dkp_ussc + count) & USSC_M_COUNT) \
153 | ((drv_tab[dtype].newf)? \
154 ((surf << USSC_V_NSURFACE) | (sect << USSC_V_NSECTOR)): \
155 ((surf << USSC_V_OSURFACE) | (sect << USSC_V_OSECTOR)) \
156 );
157
158
159 /* Status */
160
161 #define STA_ERR 0000001 /* error */
162 #define STA_DLT 0000002 /* data late */
163 #define STA_CRC 0000004 /* crc error */
164 #define STA_UNS 0000010 /* unsafe */
165 #define STA_XCY 0000020 /* cross cylinder */
166 #define STA_CYL 0000040 /* nx cylinder */
167 #define STA_DRDY 0000100 /* drive ready */
168 #define STA_SEEK3 0000200 /* seeking unit 3 */
169 #define STA_SEEK2 0000400 /* seeking unit 2 */
170 #define STA_SEEK1 0001000 /* seeking unit 1 */
171 #define STA_SEEK0 0002000 /* seeking unit 0 */
172 #define STA_SKDN3 0004000 /* seek done unit 3 */
173 #define STA_SKDN2 0010000 /* seek done unit 2 */
174 #define STA_SKDN1 0020000 /* seek done unit 1 */
175 #define STA_SKDN0 0040000 /* seek done unit 0 */
176 #define STA_DONE 0100000 /* operation done */
177
178 #define STA_DYN (STA_DRDY | STA_CYL) /* set from unit */
179 #define STA_EFLGS (STA_ERR | STA_DLT | STA_CRC | STA_UNS | \
180 STA_XCY | STA_CYL) /* error flags */
181 #define STA_DFLGS (STA_DONE | STA_SKDN0 | STA_SKDN1 | \
182 STA_SKDN2 | STA_SKDN3) /* done flags */
183
184 #define GET_SA(cy,sf,sc,t) (((((cy)*drv_tab[t].surf)+(sf))* \
185 drv_tab[t].sect)+(sc))
186
187 /* This controller supports many different disk drive types:
188
189 type #sectors/ #surfaces/ #cylinders/ new format?
190 surface cylinder drive
191
192 floppy 8 1 77 no
193 DS/DD floppy 16 2 77 yes
194 (6097 "quad floppy")
195 Diablo 31 12 2 203 no
196 6225 20 2 245 yes
197 Century 111 6 10 203 no
198 4048 (same as Century 111)
199 Diablo 44 12 4 408 no
200 6099 32 4 192 yes
201 6227 20 6 245 yes
202 6070 24 4 408 yes
203 Century 114 12 20 203 no
204 4057 (same as Century 114)
205 6103 32 8 192 yes
206 4231 23 19 411 yes
207
208 In theory, each drive can be a different type. The size field in
209 each unit selects the drive capacity for each drive and thus the
210 drive type. DISKS MUST BE DECLARED IN ASCENDING SIZE.
211 */
212
213 #define TYPE_FLP 0
214 #define SECT_FLP 8
215 #define SURF_FLP 1
216 #define CYL_FLP 77
217 #define SIZE_FLP (SECT_FLP * SURF_FLP * CYL_FLP * DKP_NUMWD)
218 #define NFMT_FLP FALSE
219
220 #define TYPE_DSDD 1
221 #define TYPE_6097 TYPE_DSDD
222 #define SECT_DSDD 16
223 #define SURF_DSDD 2
224 #define CYL_DSDD 77
225 #define SIZE_DSDD (SECT_DSDD * SURF_DSDD * CYL_DSDD * DKP_NUMWD)
226 #define NFMT_DSDD TRUE
227
228 #define TYPE_D31 2
229 #define SECT_D31 12
230 #define SURF_D31 2
231 #define CYL_D31 203
232 #define SIZE_D31 (SECT_D31 * SURF_D31 * CYL_D31 * DKP_NUMWD)
233 #define NFMT_D31 FALSE
234
235 #define TYPE_6225 3
236 #define SECT_6225 20
237 #define SURF_6225 2
238 #define CYL_6225 245
239 #define SIZE_6225 (SECT_6225 * SURF_6225 * CYL_6225 * DKP_NUMWD)
240 #define NFMT_6225 TRUE
241
242 #define TYPE_C111 4
243 #define SECT_C111 6
244 #define SURF_C111 10
245 #define CYL_C111 203
246 #define SIZE_C111 (SECT_C111 * SURF_C111 * CYL_C111 * DKP_NUMWD)
247 #define NFMT_C111 FALSE
248
249 #define TYPE_D44 5
250 #define SECT_D44 12
251 #define SURF_D44 4
252 #define CYL_D44 408
253 #define SIZE_D44 (SECT_D44 * SURF_D44 * CYL_D44 * DKP_NUMWD)
254 #define NFMT_D44 FALSE
255
256 #define TYPE_6099 6
257 #define SECT_6099 32
258 #define SURF_6099 4
259 #define CYL_6099 192
260 #define SIZE_6099 (SECT_6099 * SURF_6099 * CYL_6099 * DKP_NUMWD)
261 #define NFMT_6099 TRUE
262
263 #define TYPE_6227 7
264 #define SECT_6227 20
265 #define SURF_6227 6
266 #define CYL_6227 245
267 #define SIZE_6227 (SECT_6227 * SURF_6227 * CYL_6227 * DKP_NUMWD)
268 #define NFMT_6227 TRUE
269
270 #define TYPE_6070 8
271 #define SECT_6070 24
272 #define SURF_6070 4
273 #define CYL_6070 408
274 #define SIZE_6070 (SECT_6070 * SURF_6070 * CYL_6070 * DKP_NUMWD)
275 #define NFMT_6070 TRUE
276
277 #define TYPE_C114 9
278 #define SECT_C114 12
279 #define SURF_C114 20
280 #define CYL_C114 203
281 #define SIZE_C114 (SECT_C114 * SURF_C114 * CYL_C114 * DKP_NUMWD)
282 #define NFMT_C114 FALSE
283
284 #define TYPE_6103 10
285 #define SECT_6103 32
286 #define SURF_6103 8
287 #define CYL_6103 192
288 #define SIZE_6103 (SECT_6103 * SURF_6103 * CYL_6103 * DKP_NUMWD)
289 #define NFMT_6103 TRUE
290
291 #define TYPE_4231 11
292 #define SECT_4231 23
293 #define SURF_4231 19
294 #define CYL_4231 411
295 #define SIZE_4231 (SECT_4231 * SURF_4231 * CYL_4231 * DKP_NUMWD)
296 #define NFMT_4231 TRUE
297
298 struct drvtyp {
299 int32 sect; /* sectors */
300 int32 surf; /* surfaces */
301 int32 cyl; /* cylinders */
302 int32 size; /* #blocks */
303 int32 newf; /* new format flag */
304 };
305
306 struct drvtyp drv_tab[] = {
307 { SECT_FLP, SURF_FLP, CYL_FLP, SIZE_FLP, NFMT_FLP },
308 { SECT_DSDD, SURF_DSDD, CYL_DSDD, SIZE_DSDD, NFMT_DSDD },
309 { SECT_D31, SURF_D31, CYL_D31, SIZE_D31, NFMT_D31 },
310 { SECT_6225, SURF_6225, CYL_6225, SIZE_6225, NFMT_6225 },
311 { SECT_C111, SURF_C111, CYL_C111, SIZE_C111, NFMT_C111 },
312 { SECT_D44, SURF_D44, CYL_D44, SIZE_D44, NFMT_D44 },
313 { SECT_6099, SURF_6099, CYL_6099, SIZE_6099, NFMT_6099 },
314 { SECT_6227, SURF_6227, CYL_6227, SIZE_6227, NFMT_6227 },
315 { SECT_6070, SURF_6070, CYL_6070, SIZE_6070, NFMT_6070 },
316 { SECT_C114, SURF_C114, CYL_C114, SIZE_C114, NFMT_C114 },
317 { SECT_6103, SURF_6103, CYL_6103, SIZE_6103, NFMT_6103 },
318 { SECT_4231, SURF_4231, CYL_4231, SIZE_4231, NFMT_4231 },
319 { 0 }
320 };
321
322 #define DKP_TRACE(x) (dkp_trace & (1<<(x)))
323 #define DKP_TRACE_FP stderr
324 /* current trace bit use (bit 0 = LSB)
325 0 I/O instructions
326 1 pre-seek/read/write event setup
327 2 seek events
328 3 read/write events
329 4 post read/write events
330 */
331
332 extern uint16 M[];
333 extern UNIT cpu_unit;
334 extern int32 int_req, dev_busy, dev_done, dev_disable;
335 extern int32 saved_PC, SR, AMASK;
336
337 int32 dkp_ma = 0; /* memory address */
338 int32 dkp_map = 0; /* DCH map 0=A 3=B */
339 int32 dkp_ussc = 0; /* unit/sf/sc/cnt */
340 int32 dkp_fccy = 0; /* flags/cylinder */
341 int32 dkp_sta = 0; /* status register */
342 int32 dkp_swait = 100; /* seek latency */
343 int32 dkp_rwait = 100; /* rotate latency */
344 int32 dkp_diagmode = 0; /* diagnostic mode */
345
346 int32 dkp_trace = 0 ;
347
348 DEVICE dkp_dev;
349 int32 dkp (int32 pulse, int32 code, int32 AC);
350 t_stat dkp_svc (UNIT *uptr);
351 t_stat dkp_reset (DEVICE *dptr);
352 t_stat dkp_boot (int32 unitno, DEVICE *dptr);
353 t_stat dkp_attach (UNIT *uptr, char *cptr);
354 t_stat dkp_go ( int32 pulse );
355 t_stat dkp_set_size (UNIT *uptr, int32 val, char *cptr, void *desc);
356
357 /* DKP data structures
358
359 dkp_dev DKP device descriptor
360 dkp_unit DKP unit list
361 dkp_reg DKP register list
362 dkp_mod DKP modifier list
363 */
364
365 DIB dkp_dib = { DEV_DKP, INT_DKP, PI_DKP, &dkp };
366
367 UNIT dkp_unit[] = {
368 { UDATA (&dkp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_AUTO+
369 UNIT_ROABLE+(TYPE_D31 << UNIT_V_DTYPE), SIZE_D31) },
370 { UDATA (&dkp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_AUTO+
371 UNIT_ROABLE+(TYPE_D31 << UNIT_V_DTYPE), SIZE_D31) },
372 { UDATA (&dkp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_AUTO+
373 UNIT_ROABLE+(TYPE_D31 << UNIT_V_DTYPE), SIZE_D31) },
374 { UDATA (&dkp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_AUTO+
375 UNIT_ROABLE+(TYPE_D31 << UNIT_V_DTYPE), SIZE_D31) }
376 };
377
378 REG dkp_reg[] = {
379 { ORDATA (FCCY, dkp_fccy, 16) },
380 { ORDATA (USSC, dkp_ussc, 16) },
381 { ORDATA (STA, dkp_sta, 16) },
382 { ORDATA (MA, dkp_ma, 16) },
383 { FLDATA (INT, int_req, INT_V_DKP) },
384 { FLDATA (BUSY, dev_busy, INT_V_DKP) },
385 { FLDATA (DONE, dev_done, INT_V_DKP) },
386 { FLDATA (DISABLE, dev_disable, INT_V_DKP) },
387 { FLDATA (DIAG, dkp_diagmode, 0) },
388 { DRDATA (TRACE, dkp_trace, 32) },
389 { ORDATA (MAP, dkp_map, 2) },
390 { DRDATA (STIME, dkp_swait, 24), PV_LEFT },
391 { DRDATA (RTIME, dkp_rwait, 24), PV_LEFT },
392 { URDATA (CAPAC, dkp_unit[0].capac, 10, T_ADDR_W, 0,
393 DKP_NUMDR, PV_LEFT | REG_HRO) },
394 { NULL }
395 };
396
397 MTAB dkp_mod[] = {
398 { UNIT_WLK, 0, "write enabled", "WRITEENABLED", NULL },
399 { UNIT_WLK, UNIT_WLK, "write locked", "LOCKED", NULL },
400 { (UNIT_DTYPE+UNIT_ATT), (TYPE_FLP << UNIT_V_DTYPE) + UNIT_ATT,
401 "6030 (floppy)", NULL, NULL },
402 { (UNIT_DTYPE+UNIT_ATT), (TYPE_DSDD << UNIT_V_DTYPE) + UNIT_ATT,
403 "6097 (DS/DD floppy)", NULL, NULL },
404 { (UNIT_DTYPE+UNIT_ATT), (TYPE_D31 << UNIT_V_DTYPE) + UNIT_ATT,
405 "4047 (Diablo 31)", NULL, NULL },
406 { (UNIT_DTYPE+UNIT_ATT), (TYPE_D44 << UNIT_V_DTYPE) + UNIT_ATT,
407 "4234/6045 (Diablo 44)", NULL, NULL },
408 { (UNIT_DTYPE+UNIT_ATT), (TYPE_C111 << UNIT_V_DTYPE) + UNIT_ATT,
409 "4048 (Century 111)", NULL, NULL },
410 { (UNIT_DTYPE+UNIT_ATT), (TYPE_C114 << UNIT_V_DTYPE) + UNIT_ATT,
411 "2314/4057 (Century 114)", NULL, NULL },
412 { (UNIT_DTYPE+UNIT_ATT), (TYPE_6225 << UNIT_V_DTYPE) + UNIT_ATT,
413 "6225", NULL, NULL },
414 { (UNIT_DTYPE+UNIT_ATT), (TYPE_6227 << UNIT_V_DTYPE) + UNIT_ATT,
415 "6227", NULL, NULL },
416 { (UNIT_DTYPE+UNIT_ATT), (TYPE_6099 << UNIT_V_DTYPE) + UNIT_ATT,
417 "6099", NULL, NULL },
418 { (UNIT_DTYPE+UNIT_ATT), (TYPE_6103 << UNIT_V_DTYPE) + UNIT_ATT,
419 "6103", NULL, NULL },
420 { (UNIT_DTYPE+UNIT_ATT), (TYPE_6070 << UNIT_V_DTYPE) + UNIT_ATT,
421 "6070", NULL, NULL },
422 { (UNIT_DTYPE+UNIT_ATT), (TYPE_4231 << UNIT_V_DTYPE) + UNIT_ATT,
423 "4231/3330", NULL, NULL },
424 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_FLP << UNIT_V_DTYPE),
425 "6030 (floppy)", NULL, NULL },
426 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_DSDD << UNIT_V_DTYPE),
427 "6097 (DS/DD floppy)", NULL, NULL },
428 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_D31 << UNIT_V_DTYPE),
429 "4047 (Diablo 31)", NULL, NULL },
430 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_D44 << UNIT_V_DTYPE),
431 "4234/6045 (Diablo 44)", NULL, NULL },
432 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_C111 << UNIT_V_DTYPE),
433 "4048 (Century 111)", NULL, NULL },
434 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_C114 << UNIT_V_DTYPE),
435 "2314/4057 (Century 114)", NULL, NULL },
436 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_6225 << UNIT_V_DTYPE),
437 "6225", NULL, NULL },
438 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_6227 << UNIT_V_DTYPE),
439 "6227", NULL, NULL },
440 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_6099 << UNIT_V_DTYPE),
441 "6099", NULL, NULL },
442 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_6103 << UNIT_V_DTYPE),
443 "6103", NULL, NULL },
444 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_6070 << UNIT_V_DTYPE),
445 "6070", NULL, NULL },
446 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_4231 << UNIT_V_DTYPE),
447 "4231/3330", NULL, NULL },
448 { (UNIT_AUTO+UNIT_ATT), UNIT_AUTO, "autosize", NULL, NULL },
449 { UNIT_AUTO, UNIT_AUTO, NULL, "AUTOSIZE", NULL },
450 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_FLP << UNIT_V_DTYPE),
451 NULL, "FLOPPY", &dkp_set_size },
452 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_FLP << UNIT_V_DTYPE),
453 NULL, "6030", &dkp_set_size },
454 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_DSDD << UNIT_V_DTYPE),
455 NULL, "DSDDFLOPPY", &dkp_set_size },
456 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_DSDD << UNIT_V_DTYPE),
457 NULL, "6097", &dkp_set_size },
458 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_D31 << UNIT_V_DTYPE),
459 NULL, "D31", &dkp_set_size },
460 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_D31 << UNIT_V_DTYPE),
461 NULL, "4047", &dkp_set_size },
462 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_D44 << UNIT_V_DTYPE),
463 NULL, "D44", &dkp_set_size },
464 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_D44 << UNIT_V_DTYPE),
465 NULL, "4234", &dkp_set_size },
466 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_D44 << UNIT_V_DTYPE),
467 NULL, "6045", &dkp_set_size },
468 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_C111 << UNIT_V_DTYPE),
469 NULL, "C111", &dkp_set_size },
470 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_C111 << UNIT_V_DTYPE),
471 NULL, "4048", &dkp_set_size },
472 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_C114 << UNIT_V_DTYPE),
473 NULL, "C114", &dkp_set_size },
474 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_C114 << UNIT_V_DTYPE),
475 NULL, "2314", &dkp_set_size },
476 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_C114 << UNIT_V_DTYPE),
477 NULL, "4057", &dkp_set_size },
478 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_6225 << UNIT_V_DTYPE),
479 NULL, "6225", &dkp_set_size },
480 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_6227 << UNIT_V_DTYPE),
481 NULL, "6227", &dkp_set_size },
482 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_6099 << UNIT_V_DTYPE),
483 NULL, "6099", &dkp_set_size },
484 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_6103 << UNIT_V_DTYPE),
485 NULL, "6103", &dkp_set_size },
486 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_6070 << UNIT_V_DTYPE),
487 NULL, "6070", &dkp_set_size },
488 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_4231 << UNIT_V_DTYPE),
489 NULL, "4231", &dkp_set_size },
490 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_4231 << UNIT_V_DTYPE),
491 NULL, "3330", &dkp_set_size },
492 { 0 }
493 };
494
495 DEVICE dkp_dev = {
496 "DKP", dkp_unit, dkp_reg, dkp_mod,
497 DKP_NUMDR, 8, 30, 1, 8, 16,
498 NULL, NULL, &dkp_reset,
499 &dkp_boot, &dkp_attach, NULL,
500 &dkp_dib, DEV_DISABLE
501 };
502
503
504 /* IOT routine */
505
506 int32 dkp (int32 pulse, int32 code, int32 AC)
507 {
508 UNIT *uptr;
509 int32 u, rval, dtype;
510
511 rval = 0;
512 uptr = dkp_dev.units + GET_UNIT (dkp_ussc); /* select unit */
513 dtype = GET_DTYPE (uptr->flags); /* get drive type */
514
515 if ( DKP_TRACE(0) )
516 {
517 static char * f[8] =
518 { "NIO", "DIA", "DOA", "DIB", "DOB", "DIC", "DOC", "SKP" } ;
519 static char * s[4] =
520 { " ", "S", "C", "P" } ;
521
522 printf( " [DKP %s%s %06o ", f[code & 0x07], s[pulse & 0x03], (AC & 0xFFFF) ) ;
523 }
524
525 switch (code) { /* decode IR<5:7> */
526
527 case ioDIA: /* DIA */
528 dkp_sta = dkp_sta & (~STA_DRDY) ; /* keep error flags */
529 if (uptr->flags & UNIT_ATT) /* update ready */
530 dkp_sta = dkp_sta | STA_DRDY;
531 if (uptr->CYL >= drv_tab[dtype].cyl)
532 dkp_sta = dkp_sta | STA_CYL; /* bad cylinder? */
533 if (dkp_sta & STA_EFLGS)
534 dkp_sta = dkp_sta | STA_ERR;
535 rval = dkp_sta;
536 break;
537
538 case ioDOA: /* DOA */
539 if (AC & 0100000) /* clear rw done? */
540 dkp_sta = dkp_sta & ~(STA_CYL|STA_XCY|STA_UNS|STA_CRC);
541 if ((dev_busy & INT_DKP) == 0) {
542 dkp_fccy = AC; /* save cmd, cyl */
543 dkp_sta = dkp_sta & ~(AC & FCCY_FLAGS);
544 }
545 DEV_CLR_DONE( INT_DKP ) ; /* assume done flags 0 */
546 if ( dkp_sta & STA_DFLGS ) /* done flags = 0? */
547 DEV_SET_DONE( INT_DKP ) ; /* nope - set done */
548 DEV_UPDATE_INTR ; /* update intr */
549 break;
550
551 case ioDIB: /* DIB */
552 rval = dkp_ma & 077777 ; /* return buf addr */
553 /* with B0 clear (no DCH B map support) */
554 break;
555
556 case ioDOB: /* DOB */
557 if ((dev_busy & INT_DKP) == 0) {
558 dkp_ma = AC & (drv_tab[dtype].newf? DMASK: AMASK);
559 if (AC & 0100000)
560 dkp_map = 3; /* high bit is map */
561 else
562 dkp_map = 0;
563 }
564 break;
565
566 case ioDIC: /* DIC */
567 rval = dkp_ussc; /* return unit, sect */
568 break;
569
570 case ioDOC: /* DOC */
571 if ((dev_busy & INT_DKP) == 0) /* if device is not busy */
572 dkp_ussc = AC ; /* save unit, sect */
573 if (((dtype == TYPE_6099) || /* (BKR: don't forget 6097) */
574 (dtype == TYPE_6097) || /* for 6099 and 6103 */
575 (dtype == TYPE_6103)) && /* if data<0> set, */
576 (AC & 010000) )
577 dkp_diagmode = 1; /* set diagnostic mode */
578 break;
579 } /* end switch code */
580
581 u = GET_UNIT(dkp_ussc); /* update current unit */
582 uptr = dkp_dev.units + u ; /* select unit */
583 dtype = GET_DTYPE (uptr->flags); /* get drive type */
584
585 if ( DKP_TRACE(0) )
586 {
587 if ( code & 1 )
588 printf( " [%06o] ", (rval & 0xFFFF) ) ;
589 printf( "] \n" ) ;
590 }
591
592 switch (pulse) { /* decode IR<8:9> */
593
594 case iopS: /* start */
595 DEV_SET_BUSY( INT_DKP ) ; /* set busy */
596 DEV_CLR_DONE( INT_DKP ) ; /* clear done */
597 DEV_UPDATE_INTR ; /* update ints */
598 if (dkp_diagmode) { /* in diagnostic mode? */
599 dkp_diagmode = 0; /* reset it */
600 if (dtype == TYPE_6097) dkp_ussc = 010001; /* (BKR - quad floppy) */
601 if (dtype == TYPE_6099) dkp_ussc = 010002; /* return size bits */
602 if (dtype == TYPE_6103) dkp_ussc = 010003; /* for certain types */
603 }
604 else { /* normal mode ... */
605 if (dkp_go (pulse)) /* do command */
606 break ; /* break if no error */
607 }
608 DEV_CLR_BUSY( INT_DKP ) ; /* clear busy */
609 DEV_SET_DONE( INT_DKP ) ; /* set done */
610 DEV_UPDATE_INTR ; /* update ints */
611 dkp_sta = dkp_sta | STA_DONE; /* set controller done */
612 break;
613
614 case iopC: /* clear */
615 DEV_CLR_BUSY( INT_DKP ) ; /* clear busy */
616 DEV_CLR_DONE( INT_DKP ) ; /* set done */
617 DEV_UPDATE_INTR ; /* update ints */
618 dkp_sta = dkp_sta & ~(STA_DFLGS + STA_EFLGS); /* clear controller flags */
619 if (dkp_unit[u].FUNC != FCCY_SEEK)
620 sim_cancel (&dkp_unit[u]); /* cancel any r/w op */
621 break;
622
623 case iopP: /* pulse */
624 if ( dkp_diagmode )
625 {
626 dkp_diagmode = 0 ; /* clear DG diagnostic mode */
627 }
628 else
629 {
630 DEV_CLR_DONE( INT_DKP ) ; /* clear done */
631 DEV_UPDATE_INTR ;
632
633 /* DG "undocumented feature": 'P' pulse can not start a read/write operation!
634 * Diagnostic routines will use this crock to do 'crazy things' to size a disk
635 * and many assume that a recal is done, other assume that they can stop the
636 * read operation before any damage is done. Must also [re]calculate unit, function
637 * and type because DOx instruction may have updated the controller info after
638 * start of this procedure and before our 'P' handler. BKR
639 */
640 if (dkp_go(pulse))
641 break; /* no error - do not set done and status */
642 }
643
644 DEV_SET_DONE( INT_DKP ) ; /* set done */
645 DEV_UPDATE_INTR ; /* update ints */
646 dkp_sta = dkp_sta | (STA_SKDN0 >> u); /* set controller seek done */
647 break;
648 } /* end case pulse */
649
650 return rval;
651 }
652
653
654 /* New command, start vs pulse handled externally
655 Returns true if command ok, false if error
656 */
657
658 t_stat dkp_go ( int32 pulse )
659 {
660 UNIT * uptr;
661 int32 oldCyl, u, dtype;
662
663 dkp_sta = dkp_sta & ~STA_EFLGS; /* clear errors */
664 u = GET_UNIT (dkp_ussc); /* get unit number */
665 uptr = dkp_dev.units + u; /* get unit */
666 if (((uptr->flags & UNIT_ATT) == 0) || sim_is_active (uptr)) {
667 dkp_sta = dkp_sta | STA_ERR; /* attached or busy? */
668 return FALSE;
669 }
670
671 if (dkp_diagmode) { /* diagnostic mode? */
672 dkp_sta = (dkp_sta | STA_DONE); /* Set error bit only */
673 DEV_CLR_BUSY( INT_DKP ) ; /* clear busy */
674 DEV_SET_DONE( INT_DKP ) ; /* set done */
675 DEV_UPDATE_INTR ; /* update interrupts */
676 return ( TRUE ) ; /* do not do function */
677 }
678
679 oldCyl = uptr->CYL ; /* get old cylinder */
680 dtype = GET_DTYPE (uptr->flags); /* get drive type */
681 uptr->FUNC = GET_CMD (dkp_fccy, dtype) ; /* save command */
682 uptr->CYL = GET_CYL (dkp_fccy, dtype) ;
683
684 if ( DKP_TRACE(1) )
685 {
686 int32 xSect ;
687 int32 xSurf ;
688 int32 xCyl ;
689 int32 xCnt ;
690
691 xSect = GET_SECT(dkp_ussc, dtype) ;
692 xSurf = GET_SURF(dkp_ussc, dtype) ;
693 xCyl = GET_CYL (dkp_fccy, dtype) ;
694 xCnt = 16 - (GET_COUNT(dkp_ussc)) ;
695
696 fprintf( DKP_TRACE_FP,
697 " [%s:%c %-5s: %3d / %2d / %2d %2d %06o ] \r\n",
698 "DKP",
699 (char) (u + '0'),
700 ((uptr->FUNC == FCCY_READ) ?
701 "read"
702 : ((uptr->FUNC == FCCY_WRITE) ?
703 "write"
704 : ((uptr->FUNC == FCCY_SEEK) ?
705 "seek"
706 : "<???>"
707 )
708 )
709 ),
710 (unsigned) xCyl,
711 (unsigned) xSurf,
712 (unsigned) xSect,
713 (unsigned) (16 - xCnt),
714 (unsigned) (dkp_ma & 0xFFFF) /* show all 16-bits in case DCH B */
715 ) ;
716 }
717
718
719 switch (uptr->FUNC) { /* decode command */
720
721 case FCCY_READ:
722 case FCCY_WRITE:
723 if (((uptr->flags & UNIT_ATT) == 0) || /* not attached? */
724 ((uptr->flags & UNIT_WPRT) && (uptr->FUNC == FCCY_WRITE)))
725 {
726 dkp_sta = dkp_sta | STA_DONE | STA_ERR; /* error */
727 }
728 else if ( uptr->CYL >= drv_tab[dtype].cyl ) /* bad cylinder */
729 {
730 dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_CYL ;
731 }
732 else if ( GET_SURF(dkp_ussc, dtype) >= drv_tab[dtype].surf ) /* bad surface */
733 {
734 dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_UNS; /* older drives may not even do this... */
735 /* dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_XCY ; /- newer disks give this error */
736 }
737 else if ( GET_SECT(dkp_ussc, dtype) >= drv_tab[dtype].sect ) /* or bad sector? */
738 {
739 /* dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_UNS; /- older drives may not even do this... */
740 dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_XCY ; /* newer disks give this error */
741 }
742 if ( (pulse != iopS) || (dkp_sta & STA_ERR) )
743 {
744 return ( FALSE ) ;
745 }
746 sim_activate (uptr, dkp_rwait); /* schedule read or write request */
747 break;
748
749 case FCCY_RECAL: /* recalibrate */
750 uptr->FUNC = FCCY_SEEK ; /* save command */
751 uptr->CYL = 0 ;
752
753 case FCCY_SEEK: /* seek */
754 if ( ! (uptr->flags & UNIT_ATT) ) /* not attached? */
755 {
756 dkp_sta = dkp_sta | STA_DONE | STA_ERR; /* error */
757 }
758 else if ( uptr->CYL >= drv_tab[dtype].cyl ) /* bad cylinder? */
759 {
760 dkp_sta = dkp_sta | STA_ERR | STA_CYL;
761 }
762 if ( (pulse != iopP) || (dkp_sta & STA_ERR) )
763 {
764 return ( FALSE ) ; /* only 'P' pulse start seeks! */
765 }
766
767 /* do the seek */
768 /* must check for "do we support seeking bits" flag before setting SEEK0'ish bits! */
769 dkp_sta = dkp_sta | (STA_SEEK0 >> u); /* set seeking */
770 oldCyl = abs(oldCyl - uptr->CYL) ;
771 if ( (dkp_swait) && (! (oldCyl)) ) /* enforce minimum wait if req */
772 oldCyl = 1 ;
773 sim_activate ( uptr, (dkp_swait * oldCyl) ) ;
774 break;
775 } /* end case command */
776
777 return ( TRUE ) ; /* no error */
778 }
779
780
781 /* Unit service
782
783 If seek done, put on cylinder;
784 else, do read or write
785 If controller was busy, clear busy, set done, interrupt
786
787 Memory access: sectors are read into/written from an intermediate
788 buffer to allow word-by-word mapping of memory addresses on the
789 Eclipse. This allows each word written to memory to be tested
790 for out of range.
791 */
792
793 t_stat dkp_svc (UNIT *uptr)
794 {
795 int32 sa, bda;
796 int32 dx, pa, u;
797 int32 dtype, err, newsect, newsurf;
798 uint32 awc;
799 t_stat rval;
800 static uint16 tbuf[DKP_NUMWD]; /* transfer buffer */
801
802
803 rval = SCPE_OK;
804 dtype = GET_DTYPE (uptr->flags); /* get drive type */
805 u = uptr - dkp_dev.units; /* get unit number */
806
807 if (uptr->FUNC == FCCY_SEEK) { /* seek? */
808 if ( ! (uptr->flags & UNIT_ATT) ) /* not attached? */
809 {
810 dkp_sta = dkp_sta | STA_DONE | STA_ERR; /* error (changed during queue time?) */
811 }
812 else if ( uptr->CYL >= drv_tab[dtype].cyl ) /* bad cylinder? */
813 {
814 dkp_sta = dkp_sta | STA_ERR | STA_CYL;
815 }
816 DEV_SET_DONE( INT_DKP ) ;
817 DEV_UPDATE_INTR ;
818 dkp_sta = (dkp_sta | (STA_SKDN0 >> u)) /* set seek done */
819 & ~(STA_SEEK0 >> u); /* clear seeking */
820 if ( DKP_TRACE(2) )
821 {
822 fprintf( DKP_TRACE_FP,
823 " [%s:%c seek : %4d ] \r\n",
824 "DKP",
825 (char) (u + '0'),
826 (unsigned) (uptr->CYL)
827 ) ;
828 }
829 return SCPE_OK;
830 }
831
832 /* read or write */
833
834 if (((uptr->flags & UNIT_ATT) == 0) || /* not attached? */
835 ((uptr->flags & UNIT_WPRT) && (uptr->FUNC == FCCY_WRITE)))
836 {
837 dkp_sta = dkp_sta | STA_DONE | STA_ERR; /* error */
838 }
839 else if ( uptr->CYL >= drv_tab[dtype].cyl ) /* bad cylinder */
840 {
841 dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_CYL ;
842 dkp_sta = dkp_sta | STA_ERR | STA_CYL;
843 DEV_SET_DONE( INT_DKP ) ;
844 DEV_UPDATE_INTR ;
845 return SCPE_OK ;
846 }
847 else if ( GET_SURF(dkp_ussc, dtype) >= drv_tab[dtype].surf ) /* bad surface */
848 {
849 dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_UNS; /* older drives may not even do this... */
850 /* dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_XCY ; /- newer disks give this error */
851 /* set sector to some bad value and wait then exit? */
852 }
853 else if ( GET_SECT(dkp_ussc, dtype) >= drv_tab[dtype].sect ) /* or bad sector? */
854 {
855 /* dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_UNS; /- older DG drives do not even give error(!), but we do */
856 dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_XCY ; /* newer disks give this error */
857 }
858 else {
859 err = 0 ;
860 do {
861 if ( DKP_TRACE(3) )
862 {
863 fprintf( DKP_TRACE_FP,
864 " [%s:%c %-5s: %3d / %2d / %2d %06o ] \r\n",
865 "DKP",
866 (char) (u + '0'),
867 ((uptr->FUNC == FCCY_READ) ?
868 "read"
869 : ((uptr->FUNC == FCCY_WRITE) ?
870 "write"
871 : "<???>")
872 ),
873 (unsigned) (uptr->CYL),
874 (unsigned) (GET_SURF(dkp_ussc, dtype)),
875 (unsigned) (GET_SECT(dkp_ussc, dtype)),
876 (unsigned) (dkp_ma & 0xFFFF) /* show all 16-bits in case DCH B */
877 ) ;
878 }
879
880
881 if ( GET_SECT(dkp_ussc, dtype) >= drv_tab[dtype].sect ) /* or bad sector? */
882 {
883 /* sector overflows to 0 ;
884 * surface gets incremented
885 */
886 newsurf = GET_SURF(dkp_ussc, dtype) + 1 ;
887 newsurf = newsurf & ((drv_tab[dtype].newf) ? USSC_M_NSURFACE : USSC_M_OSURFACE) ;
888 DKP_UPDATE_USSC( type, 0, newsurf, 0 )
889
890 if ( (GET_SURF(dkp_ussc, dtype)) >= drv_tab[dtype].surf )
891 {
892 /* dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_UNS; /- older drives may not even do this... */
893 dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_XCY ; /* newer disks give this error */
894 /* DG retains overflowed surface number,
895 * other vendors have different/expanded options
896 */
897 break ;
898 }
899 }
900 sa = GET_SA (uptr->CYL, GET_SURF (dkp_ussc, dtype),
901 GET_SECT (dkp_ussc, dtype), dtype); /* get disk block */
902 bda = sa * DKP_NUMWD * sizeof(uint16) ; /* to words, bytes */
903 err = fseek (uptr->fileref, bda, SEEK_SET); /* position drive */
904
905 if (uptr->FUNC == FCCY_READ) { /* read? */
906 awc = fxread (tbuf, sizeof(uint16), DKP_NUMWD, uptr->fileref);
907 for ( ; awc < DKP_NUMWD; awc++) tbuf[awc] = 0;
908 if (err = ferror (uptr->fileref)) break;
909 for (dx = 0; dx < DKP_NUMWD; dx++) { /* loop thru buffer */
910 pa = MapAddr (dkp_map, (dkp_ma & AMASK));
911 if (MEM_ADDR_OK (pa)) M[pa] = tbuf[dx];
912 dkp_ma = (dkp_ma + 1) & AMASK;
913 }
914 }
915 else if (uptr->FUNC == FCCY_WRITE) { /* write? */
916 for (dx = 0; dx < DKP_NUMWD; dx++) { /* loop into buffer */
917 pa = MapAddr (dkp_map, (dkp_ma & AMASK));
918 tbuf[dx] = M[pa];
919 dkp_ma = (dkp_ma + 1) & AMASK;
920 }
921 fxwrite (tbuf, sizeof(int16), DKP_NUMWD, uptr->fileref);
922 if (err = ferror (uptr->fileref)) break;
923 }
924
925 if (err != 0) {
926 perror ("DKP I/O error");
927 clearerr (uptr->fileref);
928 rval = SCPE_IOERR;
929 break ;
930 }
931
932 newsect = GET_SECT (dkp_ussc, dtype) + 1 ; /* update next sector */
933 newsurf = GET_SURF (dkp_ussc, dtype) ; /* and next head */
934 /* (count set below) */
935 DKP_UPDATE_USSC( type, 1, newsurf, newsect )
936 } /* end read/write loop */
937
938 while ( (GET_COUNT(dkp_ussc)) ) ;
939 dkp_sta = dkp_sta | STA_DONE; /* set status */
940
941 if ( DKP_TRACE(4) )
942 {
943 fprintf( DKP_TRACE_FP,
944 " [%s:%c %-5s: %3d / %2d / %2d %06o ] \r\n",
945 "DKP",
946 (char) (u + '0'),
947 "post",
948 (unsigned) (uptr->CYL),
949 (unsigned) (GET_SURF(dkp_ussc, dtype)),
950 (unsigned) (GET_SECT(dkp_ussc, dtype)),
951 (unsigned) (dkp_ma & 0xFFFF) /* show all 16-bits in case DCH B */
952 ) ;
953 }
954 }
955
956 DEV_CLR_BUSY( INT_DKP ) ;
957 DEV_SET_DONE( INT_DKP ) ;
958 DEV_UPDATE_INTR ;
959 return rval;
960 }
961
962 /* Reset routine */
963
964 t_stat dkp_reset (DEVICE *dptr)
965 {
966 int32 u;
967 UNIT *uptr;
968
969 DEV_CLR_BUSY( INT_DKP ) ; /* clear busy */
970 DEV_CLR_DONE( INT_DKP ) ; /* clear done */
971 DEV_UPDATE_INTR ; /* update ints */
972 dkp_fccy = dkp_ussc = dkp_ma = dkp_sta = 0; /* clear registers */
973 dkp_diagmode = 0; /* clear diagnostic mode */
974 dkp_map = 0;
975 for (u = 0; u < DKP_NUMDR; u++) { /* loop thru units */
976 uptr = dkp_dev.units + u;
977 sim_cancel (uptr); /* cancel activity */
978 uptr->CYL = uptr->FUNC = 0;
979 }
980 return SCPE_OK;
981 }
982
983 /* Attach routine (with optional autosizing) */
984
985 t_stat dkp_attach (UNIT *uptr, char *cptr)
986 {
987 int32 i, p;
988 t_stat r;
989
990 uptr->capac = drv_tab[GET_DTYPE (uptr->flags)].size; /* restore capac */
991 r = attach_unit (uptr, cptr); /* attach */
992 if ((r != SCPE_OK) || !(uptr->flags & UNIT_AUTO)) return r;
993 if ((p = sim_fsize (uptr->fileref)) == 0) return SCPE_OK; /* get file size */
994 for (i = 0; drv_tab[i].sect != 0; i++) {
995 if (p <= (drv_tab[i].size * (int32) sizeof (uint16))) {
996 uptr->flags = (uptr->flags & ~UNIT_DTYPE) | (i << UNIT_V_DTYPE);
997 uptr->capac = drv_tab[i].size;
998 return SCPE_OK;
999 }
1000 }
1001 return SCPE_OK;
1002 }
1003
1004 /* Set size command validation routine */
1005
1006 t_stat dkp_set_size (UNIT *uptr, int32 val, char *cptr, void *desc)
1007 {
1008 if (uptr->flags & UNIT_ATT) return SCPE_ALATT;
1009 uptr->capac = drv_tab[GET_DTYPE (val)].size;
1010 return SCPE_OK;
1011 }
1012
1013 /* Bootstrap routine */
1014
1015 #if defined(_OLD_CODE_)
1016
1017 #define BOOT_START 02000
1018 #define BOOT_UNIT 02021
1019 #define BOOT_SEEK 02022
1020 #define BOOT_LEN (sizeof(boot_rom) / sizeof(int32))
1021
1022 static const int32 boot_rom[] = {
1023 0060233, /* NIOC 0,DKP ; clear disk */
1024 0020420, /* LDA 0,USSC ; unit, sfc, sec, cnt */
1025 0063033, /* DOC 0,DKP ; select disk */
1026 0020417, /* LDA 0,SEKCMD ; command, cylinder */
1027 0061333, /* DOAP 0,DKP ; start seek */
1028 0024415, /* LDA 1,SEKDN */
1029 0060433, /* DIA 0,DKP ; get status */
1030 0123415, /* AND# 1,0,SZR ; skip if done */
1031 0000776, /* JMP .-2 */
1032 0102400, /* SUB 0,0 ; mem addr = 0 */
1033 0062033, /* DOB 0,DKP */
1034 0020411, /* LDA 0,REDCMD ; command, cylinder */
1035 0061133, /* DOAS 0,DKP ; start read */
1036 0060433, /* DIA 0, DKP ; get status */
1037 0101113, /* MOVL# 0,0,SNC ; skip if done */
1038 0000776, /* JMP .-2 */
1039 0000377, /* JMP 377 */
1040 0000016, /* USSC: 0.B1+0.B7+0.B11+16 */
1041 0175000, /* SEKCMD: 175000 */
1042 0074000, /* SEKDN: 074000 */
1043 0174000 /* REDCMD: 174000 */
1044 };
1045
1046
1047 t_stat dkp_boot (int32 unitno, DEVICE *dptr)
1048 {
1049 int32 i, dtype;
1050 extern int32 saved_PC, SR;
1051
1052 for (i = 0; i < BOOT_LEN; i++) M[BOOT_START + i] = boot_rom[i];
1053 unitno = unitno & USSC_M_UNIT;
1054 dtype = GET_DTYPE (dkp_unit[unitno].flags);
1055 M[BOOT_UNIT] = M[BOOT_UNIT] | (unitno << USSC_V_UNIT);
1056 if (drv_tab[dtype].newf) M[BOOT_SEEK] = 0176000;
1057 saved_PC = BOOT_START;
1058 SR = 0100000 + DEV_DKP;
1059 return SCPE_OK;
1060 }
1061
1062 #endif /* _OLD_CODE_ */
1063
1064
1065
1066 #define BOOT_START 0375
1067 #define BOOT_LEN (sizeof (boot_rom) / sizeof (int32))
1068
1069 static const int32 boot_rom[] = {
1070 0062677 /* IORST ; reset the I/O system */
1071 , 0060133 /* NIOS DKP ; start the disk */
1072 , 0000377 /* JMP 377 ; wait for the world */
1073 } ;
1074
1075
1076 t_stat dkp_boot (int32 unitno, DEVICE *dptr)
1077 {
1078 int32 i;
1079
1080 for (i = 0; i < BOOT_LEN; i++) M[BOOT_START + i] = (uint16) boot_rom[i];
1081 saved_PC = BOOT_START;
1082 SR = 0100000 + DEV_DKP;
1083 return SCPE_OK;
1084 }
Magically enhanced SIMH