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First Commit of my working state
[simh.git] / NOVA / nova_dkp.c
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196ba1fc
PH		 1/* nova_dkp.c: NOVA moving head disk simulator\r
2\r
3 Copyright (c) 1993-2008, Robert M. Supnik\r
4\r
5 Permission is hereby granted, free of charge, to any person obtaining a\r
6 copy of this software and associated documentation files (the "Software"),\r
7 to deal in the Software without restriction, including without limitation\r
8 the rights to use, copy, modify, merge, publish, distribute, sublicense,\r
9 and/or sell copies of the Software, and to permit persons to whom the\r
10 Software is furnished to do so, subject to the following conditions:\r
11\r
12 The above copyright notice and this permission notice shall be included in\r
13 all copies or substantial portions of the Software.\r
14\r
15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r
17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\r
18 ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
19 IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
20 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
21\r
22 Except as contained in this notice, the name of Robert M Supnik shall not be\r
23 used in advertising or otherwise to promote the sale, use or other dealings\r
24 in this Software without prior written authorization from Robert M Supnik.\r
25\r
26 dkp moving head disk\r
27\r
28 04-Jul-04 BKR device name changed to DG's DKP from DEC's DP,\r
29 DEV_SET/CLR/INTR macro use started,\r
30 fixed 'P' pulse code and secret quirks,\r
31 added 6097 diag and size support,\r
32 fixed losing unit drive type during unit change,\r
33 tightened sector size determination calculations,\r
34 controller DONE flag handling fixed,\r
35 fixed cylinder overflow test error,\r
36 seek error code fixed,\r
37 restructured dkp_go() and dkp_svc() routines\r
38 (for known future fixes needed),\r
39 fixed DIA status calculation,\r
40 fixed DKP read/write loop to properly emulate DG cylinder and sector overflows,\r
41 added trace facility,\r
42 changed 'stime' calculation to force delay time if no cylinders are crossed\r
43 (this fixes some DG code that assumes disk seek takes some time),\r
44 fixed boot code to match DG hardware standard\r
45 04-Jan-04 RMS Changed attach routine to use sim_fsize\r
46 28-Nov-03 CEO Boot from DP now puts device address in SR\r
47 24-Nov-03 CEO Added support for disk sizing on 6099/6103\r
48 19-Nov-03 CEO Corrected major DMA Mapping bug\r
49 25-Apr-03 RMS Revised autosizing\r
50 08-Oct-02 RMS Added DIB\r
51 06-Jan-02 RMS Revised enable/disable support\r
52 30-Nov-01 RMS Added read only unit, extended SET/SHOW support\r
53 24-Nov-01 RMS Changed FLG, CAPAC to arrays\r
54 26-Apr-01 RMS Added device enable/disable support\r
55 12-Dec-00 RMS Added Eclipse support from Charles Owen\r
56 15-Oct-00 RMS Editorial changes\r
57 14-Apr-99 RMS Changed t_addr to unsigned\r
58 15-Sep-97 RMS Fixed bug in DIB/DOB for new disks\r
59 15-Sep-97 RMS Fixed bug in cylinder extraction (found by Charles Owen)\r
60 10-Sep-97 RMS Fixed bug in error reporting (found by Charles Owen)\r
61 25-Nov-96 RMS Defaulted to autosize\r
62 29-Jun-96 RMS Added unit disable support\r
63*/\r
64\r
65#include "nova_defs.h"\r
66\r
67#define DKP_NUMDR 4 /* #drives */\r
68#define DKP_NUMWD 256 /* words/sector */\r
69#define UNIT_V_WLK (UNIT_V_UF + 0) /* write locked */\r
70#define UNIT_V_DTYPE (UNIT_V_UF + 1) /* disk type */\r
71#define UNIT_M_DTYPE 017\r
72#define UNIT_V_AUTO (UNIT_V_UF + 5) /* autosize */\r
73#define UNIT_WLK (1 << UNIT_V_WLK)\r
74#define UNIT_DTYPE (UNIT_M_DTYPE << UNIT_V_DTYPE)\r
75#define UNIT_AUTO (1 << UNIT_V_AUTO)\r
76#define GET_DTYPE(x) (((x) >> UNIT_V_DTYPE) & UNIT_M_DTYPE)\r
77#define FUNC u3 /* function */\r
78#define CYL u4 /* on cylinder */\r
79#define UNIT_WPRT (UNIT_WLK | UNIT_RO) /* write protect */\r
80\r
81/* Unit, surface, sector, count register\r
82\r
83 Original format: 2b, 6b, 4b, 4b\r
84 Revised format: 2b, 5b, 5b, 4b\r
85*/\r
86\r
87#define USSC_V_COUNT 0 /* count */\r
88#define USSC_M_COUNT 017\r
89#define USSC_V_OSECTOR 4 /* old: sector */\r
90#define USSC_M_OSECTOR 017\r
91#define USSC_V_OSURFACE 8 /* old: surface */\r
92#define USSC_M_OSURFACE 077\r
93#define USSC_V_NSECTOR 4 /* new: sector */\r
94#define USSC_M_NSECTOR 037\r
95#define USSC_V_NSURFACE 9 /* new: surface */\r
96#define USSC_M_NSURFACE 037\r
97#define USSC_V_UNIT 14 /* unit */\r
98#define USSC_M_UNIT 03\r
99#define USSC_UNIT (USSC_M_UNIT << USSC_V_UNIT)\r
100#define GET_COUNT(x) (((x) >> USSC_V_COUNT) & USSC_M_COUNT)\r
101#define GET_SECT(x,dt) ((drv_tab[dt].newf)? \\r
102 (((x) >> USSC_V_NSECTOR) & USSC_M_NSECTOR): \\r
103 (((x) >> USSC_V_OSECTOR) & USSC_M_OSECTOR) )\r
104#define GET_SURF(x,dt) ((drv_tab[dt].newf)? \\r
105 (((x) >> USSC_V_NSURFACE) & USSC_M_NSURFACE): \\r
106 (((x) >> USSC_V_OSURFACE) & USSC_M_OSURFACE) )\r
107#define GET_UNIT(x) (((x) >> USSC_V_UNIT) & USSC_M_UNIT)\r
108\r
109/* Flags, command, cylinder register\r
110\r
111 Original format: 5b, 2b, 1b + 8b (surrounding command)\r
112 Revised format: 5b, 2b, 9b\r
113*/\r
114\r
115#define FCCY_V_OCYL 0 /* old: cylinder */\r
116#define FCCY_M_OCYL 0377\r
117#define FCCY_V_OCMD 8 /* old: command */\r
118#define FCCY_M_OCMD 3\r
119#define FCCY_V_OCEX 10 /* old: cyl extend */\r
120#define FCCY_OCEX (1 << FCCY_V_OCEX)\r
121#define FCCY_V_NCYL 0 /* new: cylinder */\r
122#define FCCY_M_NCYL 0777\r
123#define FCCY_V_NCMD 9 /* new: command */\r
124#define FCCY_M_NCMD 3\r
125#define FCCY_READ 0\r
126#define FCCY_WRITE 1\r
127#define FCCY_SEEK 2\r
128#define FCCY_RECAL 3\r
129#define FCCY_FLAGS 0174000 /* flags */\r
130\r
131#define GET_CMD(x,dt) ((drv_tab[dt].newf)? \\r
132 (((x) >> FCCY_V_NCMD) & FCCY_M_NCMD): \\r
133 (((x) >> FCCY_V_OCMD) & FCCY_M_OCMD) )\r
134\r
135#define SET_CMD(x,dt) dkp_fccy = (dkp_fccy & ((drv_tab[dt].newf)? \\r
136 (FCCY_M_NCMD << FCCY_V_NCMD) : (FCCY_M_OCMD << FCCY_V_OCMD))) | \\r
137 ((drv_tab[dt].newf)? \\r
138 (((x) & FCCY_M_NCMD) << FCCY_V_NCMD): \\r
139 (((x) & FCCY_M_OCMD) << FCCY_V_OCMD) )\r
140\r
141#define GET_CYL(x,dt) ((drv_tab[dt].newf)? \\r
142 (((x) >> FCCY_V_NCYL) & FCCY_M_NCYL): \\r
143 ((((x) >> FCCY_V_OCYL) & FCCY_M_OCYL) | \\r
144 ((dt != TYPE_D44)? 0: \\r
145 (((x) & FCCY_OCEX) >> (FCCY_V_OCEX - FCCY_V_OCMD)))) )\r
146\r
147\r
148 /* (Warning: no sector or surface masking is done!) */\r
149\r
150#define DKP_UPDATE_USSC( type, count, surf, sect ) \\r
151 dkp_ussc = (dkp_ussc & USSC_UNIT) \\r
152 | ((dkp_ussc + count) & USSC_M_COUNT) \\r
153 | ((drv_tab[dtype].newf)? \\r
154 ((surf << USSC_V_NSURFACE) | (sect << USSC_V_NSECTOR)): \\r
155 ((surf << USSC_V_OSURFACE) | (sect << USSC_V_OSECTOR)) \\r
156 );\r
157\r
158\r
159/* Status */\r
160\r
161#define STA_ERR 0000001 /* error */\r
162#define STA_DLT 0000002 /* data late */\r
163#define STA_CRC 0000004 /* crc error */\r
164#define STA_UNS 0000010 /* unsafe */\r
165#define STA_XCY 0000020 /* cross cylinder */\r
166#define STA_CYL 0000040 /* nx cylinder */\r
167#define STA_DRDY 0000100 /* drive ready */\r
168#define STA_SEEK3 0000200 /* seeking unit 3 */\r
169#define STA_SEEK2 0000400 /* seeking unit 2 */\r
170#define STA_SEEK1 0001000 /* seeking unit 1 */\r
171#define STA_SEEK0 0002000 /* seeking unit 0 */\r
172#define STA_SKDN3 0004000 /* seek done unit 3 */\r
173#define STA_SKDN2 0010000 /* seek done unit 2 */\r
174#define STA_SKDN1 0020000 /* seek done unit 1 */\r
175#define STA_SKDN0 0040000 /* seek done unit 0 */\r
176#define STA_DONE 0100000 /* operation done */\r
177\r
178#define STA_DYN (STA_DRDY | STA_CYL) /* set from unit */\r
179#define STA_EFLGS (STA_ERR | STA_DLT | STA_CRC | STA_UNS | \\r
180 STA_XCY | STA_CYL) /* error flags */\r
181#define STA_DFLGS (STA_DONE | STA_SKDN0 | STA_SKDN1 | \\r
182 STA_SKDN2 | STA_SKDN3) /* done flags */\r
183\r
184#define GET_SA(cy,sf,sc,t) (((((cy)*drv_tab[t].surf)+(sf))* \\r
185 drv_tab[t].sect)+(sc))\r
186\r
187/* This controller supports many different disk drive types:\r
188\r
189 type #sectors/ #surfaces/ #cylinders/ new format?\r
190 surface cylinder drive\r
191\r
192 floppy 8 1 77 no\r
193 DS/DD floppy 16 2 77 yes\r
194 (6097 "quad floppy")\r
195 Diablo 31 12 2 203 no\r
196 6225 20 2 245 yes\r
197 Century 111 6 10 203 no\r
198 4048 (same as Century 111)\r
199 Diablo 44 12 4 408 no\r
200 6099 32 4 192 yes\r
201 6227 20 6 245 yes\r
202 6070 24 4 408 yes \r
203 Century 114 12 20 203 no\r
204 4057 (same as Century 114)\r
205 6103 32 8 192 yes\r
206 4231 23 19 411 yes\r
207\r
208 In theory, each drive can be a different type. The size field in\r
209 each unit selects the drive capacity for each drive and thus the\r
210 drive type. DISKS MUST BE DECLARED IN ASCENDING SIZE.\r
211*/\r
212\r
213#define TYPE_FLP 0\r
214#define SECT_FLP 8\r
215#define SURF_FLP 1\r
216#define CYL_FLP 77\r
217#define SIZE_FLP (SECT_FLP * SURF_FLP * CYL_FLP * DKP_NUMWD)\r
218#define NFMT_FLP FALSE\r
219\r
220#define TYPE_DSDD 1\r
221#define TYPE_6097 TYPE_DSDD\r
222#define SECT_DSDD 16\r
223#define SURF_DSDD 2\r
224#define CYL_DSDD 77\r
225#define SIZE_DSDD (SECT_DSDD * SURF_DSDD * CYL_DSDD * DKP_NUMWD)\r
226#define NFMT_DSDD TRUE\r
227\r
228#define TYPE_D31 2\r
229#define SECT_D31 12\r
230#define SURF_D31 2\r
231#define CYL_D31 203\r
232#define SIZE_D31 (SECT_D31 * SURF_D31 * CYL_D31 * DKP_NUMWD)\r
233#define NFMT_D31 FALSE\r
234\r
235#define TYPE_6225 3\r
236#define SECT_6225 20\r
237#define SURF_6225 2\r
238#define CYL_6225 245\r
239#define SIZE_6225 (SECT_6225 * SURF_6225 * CYL_6225 * DKP_NUMWD)\r
240#define NFMT_6225 TRUE\r
241\r
242#define TYPE_C111 4\r
243#define SECT_C111 6\r
244#define SURF_C111 10\r
245#define CYL_C111 203\r
246#define SIZE_C111 (SECT_C111 * SURF_C111 * CYL_C111 * DKP_NUMWD)\r
247#define NFMT_C111 FALSE\r
248\r
249#define TYPE_D44 5\r
250#define SECT_D44 12\r
251#define SURF_D44 4\r
252#define CYL_D44 408\r
253#define SIZE_D44 (SECT_D44 * SURF_D44 * CYL_D44 * DKP_NUMWD)\r
254#define NFMT_D44 FALSE\r
255\r
256#define TYPE_6099 6\r
257#define SECT_6099 32\r
258#define SURF_6099 4\r
259#define CYL_6099 192\r
260#define SIZE_6099 (SECT_6099 * SURF_6099 * CYL_6099 * DKP_NUMWD)\r
261#define NFMT_6099 TRUE \r
262\r
263#define TYPE_6227 7\r
264#define SECT_6227 20\r
265#define SURF_6227 6\r
266#define CYL_6227 245\r
267#define SIZE_6227 (SECT_6227 * SURF_6227 * CYL_6227 * DKP_NUMWD)\r
268#define NFMT_6227 TRUE\r
269\r
270#define TYPE_6070 8\r
271#define SECT_6070 24\r
272#define SURF_6070 4\r
273#define CYL_6070 408\r
274#define SIZE_6070 (SECT_6070 * SURF_6070 * CYL_6070 * DKP_NUMWD)\r
275#define NFMT_6070 TRUE\r
276\r
277#define TYPE_C114 9\r
278#define SECT_C114 12\r
279#define SURF_C114 20\r
280#define CYL_C114 203\r
281#define SIZE_C114 (SECT_C114 * SURF_C114 * CYL_C114 * DKP_NUMWD)\r
282#define NFMT_C114 FALSE\r
283\r
284#define TYPE_6103 10\r
285#define SECT_6103 32\r
286#define SURF_6103 8\r
287#define CYL_6103 192\r
288#define SIZE_6103 (SECT_6103 * SURF_6103 * CYL_6103 * DKP_NUMWD)\r
289#define NFMT_6103 TRUE\r
290\r
291#define TYPE_4231 11\r
292#define SECT_4231 23\r
293#define SURF_4231 19\r
294#define CYL_4231 411\r
295#define SIZE_4231 (SECT_4231 * SURF_4231 * CYL_4231 * DKP_NUMWD)\r
296#define NFMT_4231 TRUE\r
297\r
298struct drvtyp {\r
299 int32 sect; /* sectors */\r
300 int32 surf; /* surfaces */\r
301 int32 cyl; /* cylinders */\r
302 int32 size; /* #blocks */\r
303 int32 newf; /* new format flag */\r
304 };\r
305\r
306struct drvtyp drv_tab[] = {\r
307 { SECT_FLP, SURF_FLP, CYL_FLP, SIZE_FLP, NFMT_FLP },\r
308 { SECT_DSDD, SURF_DSDD, CYL_DSDD, SIZE_DSDD, NFMT_DSDD },\r
309 { SECT_D31, SURF_D31, CYL_D31, SIZE_D31, NFMT_D31 },\r
310 { SECT_6225, SURF_6225, CYL_6225, SIZE_6225, NFMT_6225 },\r
311 { SECT_C111, SURF_C111, CYL_C111, SIZE_C111, NFMT_C111 },\r
312 { SECT_D44, SURF_D44, CYL_D44, SIZE_D44, NFMT_D44 },\r
313 { SECT_6099, SURF_6099, CYL_6099, SIZE_6099, NFMT_6099 },\r
314 { SECT_6227, SURF_6227, CYL_6227, SIZE_6227, NFMT_6227 },\r
315 { SECT_6070, SURF_6070, CYL_6070, SIZE_6070, NFMT_6070 },\r
316 { SECT_C114, SURF_C114, CYL_C114, SIZE_C114, NFMT_C114 },\r
317 { SECT_6103, SURF_6103, CYL_6103, SIZE_6103, NFMT_6103 },\r
318 { SECT_4231, SURF_4231, CYL_4231, SIZE_4231, NFMT_4231 },\r
319 { 0 }\r
320 };\r
321\r
322#define DKP_TRACE(x) (dkp_trace & (1<<(x)))\r
323#define DKP_TRACE_FP stderr\r
324/* current trace bit use (bit 0 = LSB)\r
325 0 I/O instructions\r
326 1 pre-seek/read/write event setup\r
327 2 seek events\r
328 3 read/write events\r
329 4 post read/write events\r
330 */\r
331\r
332extern uint16 M[];\r
333extern UNIT cpu_unit;\r
334extern int32 int_req, dev_busy, dev_done, dev_disable;\r
335extern int32 saved_PC, SR, AMASK;\r
336\r
337int32 dkp_ma = 0; /* memory address */\r
338int32 dkp_map = 0; /* DCH map 0=A 3=B */\r
339int32 dkp_ussc = 0; /* unit/sf/sc/cnt */\r
340int32 dkp_fccy = 0; /* flags/cylinder */\r
341int32 dkp_sta = 0; /* status register */\r
342int32 dkp_swait = 100; /* seek latency */\r
343int32 dkp_rwait = 100; /* rotate latency */\r
344int32 dkp_diagmode = 0; /* diagnostic mode */\r
345\r
346int32 dkp_trace = 0 ;\r
347\r
348DEVICE dkp_dev;\r
349int32 dkp (int32 pulse, int32 code, int32 AC);\r
350t_stat dkp_svc (UNIT *uptr);\r
351t_stat dkp_reset (DEVICE *dptr);\r
352t_stat dkp_boot (int32 unitno, DEVICE *dptr);\r
353t_stat dkp_attach (UNIT *uptr, char *cptr);\r
354t_stat dkp_go ( int32 pulse );\r
355t_stat dkp_set_size (UNIT *uptr, int32 val, char *cptr, void *desc);\r
356\r
357/* DKP data structures\r
358\r
359 dkp_dev DKP device descriptor\r
360 dkp_unit DKP unit list\r
361 dkp_reg DKP register list\r
362 dkp_mod DKP modifier list\r
363*/\r
364\r
365DIB dkp_dib = { DEV_DKP, INT_DKP, PI_DKP, &dkp };\r
366\r
367UNIT dkp_unit[] = {\r
368 { UDATA (&dkp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_AUTO+\r
369 UNIT_ROABLE+(TYPE_D31 << UNIT_V_DTYPE), SIZE_D31) },\r
370 { UDATA (&dkp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_AUTO+\r
371 UNIT_ROABLE+(TYPE_D31 << UNIT_V_DTYPE), SIZE_D31) },\r
372 { UDATA (&dkp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_AUTO+\r
373 UNIT_ROABLE+(TYPE_D31 << UNIT_V_DTYPE), SIZE_D31) },\r
374 { UDATA (&dkp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_AUTO+\r
375 UNIT_ROABLE+(TYPE_D31 << UNIT_V_DTYPE), SIZE_D31) }\r
376 };\r
377\r
378REG dkp_reg[] = {\r
379 { ORDATA (FCCY, dkp_fccy, 16) },\r
380 { ORDATA (USSC, dkp_ussc, 16) },\r
381 { ORDATA (STA, dkp_sta, 16) },\r
382 { ORDATA (MA, dkp_ma, 16) },\r
383 { FLDATA (INT, int_req, INT_V_DKP) },\r
384 { FLDATA (BUSY, dev_busy, INT_V_DKP) },\r
385 { FLDATA (DONE, dev_done, INT_V_DKP) },\r
386 { FLDATA (DISABLE, dev_disable, INT_V_DKP) },\r
387 { FLDATA (DIAG, dkp_diagmode, 0) },\r
388 { DRDATA (TRACE, dkp_trace, 32) },\r
389 { ORDATA (MAP, dkp_map, 2) },\r
390 { DRDATA (STIME, dkp_swait, 24), PV_LEFT },\r
391 { DRDATA (RTIME, dkp_rwait, 24), PV_LEFT },\r
392 { URDATA (CAPAC, dkp_unit[0].capac, 10, T_ADDR_W, 0,\r
393 DKP_NUMDR, PV_LEFT | REG_HRO) },\r
394 { NULL }\r
395 };\r
396\r
397MTAB dkp_mod[] = {\r
398 { UNIT_WLK, 0, "write enabled", "WRITEENABLED", NULL },\r
399 { UNIT_WLK, UNIT_WLK, "write locked", "LOCKED", NULL },\r
400 { (UNIT_DTYPE+UNIT_ATT), (TYPE_FLP << UNIT_V_DTYPE) + UNIT_ATT,\r
401 "6030 (floppy)", NULL, NULL },\r
402 { (UNIT_DTYPE+UNIT_ATT), (TYPE_DSDD << UNIT_V_DTYPE) + UNIT_ATT,\r
403 "6097 (DS/DD floppy)", NULL, NULL },\r
404 { (UNIT_DTYPE+UNIT_ATT), (TYPE_D31 << UNIT_V_DTYPE) + UNIT_ATT,\r
405 "4047 (Diablo 31)", NULL, NULL },\r
406 { (UNIT_DTYPE+UNIT_ATT), (TYPE_D44 << UNIT_V_DTYPE) + UNIT_ATT,\r
407 "4234/6045 (Diablo 44)", NULL, NULL },\r
408 { (UNIT_DTYPE+UNIT_ATT), (TYPE_C111 << UNIT_V_DTYPE) + UNIT_ATT,\r
409 "4048 (Century 111)", NULL, NULL },\r
410 { (UNIT_DTYPE+UNIT_ATT), (TYPE_C114 << UNIT_V_DTYPE) + UNIT_ATT,\r
411 "2314/4057 (Century 114)", NULL, NULL },\r
412 { (UNIT_DTYPE+UNIT_ATT), (TYPE_6225 << UNIT_V_DTYPE) + UNIT_ATT,\r
413 "6225", NULL, NULL },\r
414 { (UNIT_DTYPE+UNIT_ATT), (TYPE_6227 << UNIT_V_DTYPE) + UNIT_ATT,\r
415 "6227", NULL, NULL },\r
416 { (UNIT_DTYPE+UNIT_ATT), (TYPE_6099 << UNIT_V_DTYPE) + UNIT_ATT,\r
417 "6099", NULL, NULL },\r
418 { (UNIT_DTYPE+UNIT_ATT), (TYPE_6103 << UNIT_V_DTYPE) + UNIT_ATT,\r
419 "6103", NULL, NULL },\r
420 { (UNIT_DTYPE+UNIT_ATT), (TYPE_6070 << UNIT_V_DTYPE) + UNIT_ATT,\r
421 "6070", NULL, NULL },\r
422 { (UNIT_DTYPE+UNIT_ATT), (TYPE_4231 << UNIT_V_DTYPE) + UNIT_ATT,\r
423 "4231/3330", NULL, NULL },\r
424 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_FLP << UNIT_V_DTYPE),\r
425 "6030 (floppy)", NULL, NULL },\r
426 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_DSDD << UNIT_V_DTYPE),\r
427 "6097 (DS/DD floppy)", NULL, NULL },\r
428 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_D31 << UNIT_V_DTYPE),\r
429 "4047 (Diablo 31)", NULL, NULL },\r
430 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_D44 << UNIT_V_DTYPE),\r
431 "4234/6045 (Diablo 44)", NULL, NULL },\r
432 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_C111 << UNIT_V_DTYPE),\r
433 "4048 (Century 111)", NULL, NULL },\r
434 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_C114 << UNIT_V_DTYPE),\r
435 "2314/4057 (Century 114)", NULL, NULL },\r
436 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_6225 << UNIT_V_DTYPE),\r
437 "6225", NULL, NULL },\r
438 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_6227 << UNIT_V_DTYPE),\r
439 "6227", NULL, NULL },\r
440 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_6099 << UNIT_V_DTYPE),\r
441 "6099", NULL, NULL },\r
442 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_6103 << UNIT_V_DTYPE),\r
443 "6103", NULL, NULL },\r
444 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_6070 << UNIT_V_DTYPE),\r
445 "6070", NULL, NULL },\r
446 { (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (TYPE_4231 << UNIT_V_DTYPE),\r
447 "4231/3330", NULL, NULL },\r
448 { (UNIT_AUTO+UNIT_ATT), UNIT_AUTO, "autosize", NULL, NULL },\r
449 { UNIT_AUTO, UNIT_AUTO, NULL, "AUTOSIZE", NULL },\r
450 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_FLP << UNIT_V_DTYPE),\r
451 NULL, "FLOPPY", &dkp_set_size },\r
452 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_FLP << UNIT_V_DTYPE),\r
453 NULL, "6030", &dkp_set_size },\r
454 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_DSDD << UNIT_V_DTYPE),\r
455 NULL, "DSDDFLOPPY", &dkp_set_size },\r
456 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_DSDD << UNIT_V_DTYPE),\r
457 NULL, "6097", &dkp_set_size },\r
458 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_D31 << UNIT_V_DTYPE),\r
459 NULL, "D31", &dkp_set_size }, \r
460 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_D31 << UNIT_V_DTYPE),\r
461 NULL, "4047", &dkp_set_size }, \r
462 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_D44 << UNIT_V_DTYPE),\r
463 NULL, "D44", &dkp_set_size },\r
464 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_D44 << UNIT_V_DTYPE),\r
465 NULL, "4234", &dkp_set_size },\r
466 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_D44 << UNIT_V_DTYPE),\r
467 NULL, "6045", &dkp_set_size },\r
468 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_C111 << UNIT_V_DTYPE),\r
469 NULL, "C111", &dkp_set_size },\r
470 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_C111 << UNIT_V_DTYPE),\r
471 NULL, "4048", &dkp_set_size },\r
472 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_C114 << UNIT_V_DTYPE),\r
473 NULL, "C114", &dkp_set_size },\r
474 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_C114 << UNIT_V_DTYPE),\r
475 NULL, "2314", &dkp_set_size },\r
476 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_C114 << UNIT_V_DTYPE),\r
477 NULL, "4057", &dkp_set_size },\r
478 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_6225 << UNIT_V_DTYPE),\r
479 NULL, "6225", &dkp_set_size },\r
480 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_6227 << UNIT_V_DTYPE),\r
481 NULL, "6227", &dkp_set_size },\r
482 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_6099 << UNIT_V_DTYPE),\r
483 NULL, "6099", &dkp_set_size },\r
484 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_6103 << UNIT_V_DTYPE),\r
485 NULL, "6103", &dkp_set_size },\r
486 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_6070 << UNIT_V_DTYPE),\r
487 NULL, "6070", &dkp_set_size },\r
488 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_4231 << UNIT_V_DTYPE),\r
489 NULL, "4231", &dkp_set_size },\r
490 { (UNIT_AUTO+UNIT_DTYPE), (TYPE_4231 << UNIT_V_DTYPE),\r
491 NULL, "3330", &dkp_set_size },\r
492 { 0 }\r
493 };\r
494\r
495DEVICE dkp_dev = {\r
496 "DKP", dkp_unit, dkp_reg, dkp_mod,\r
497 DKP_NUMDR, 8, 30, 1, 8, 16,\r
498 NULL, NULL, &dkp_reset,\r
499 &dkp_boot, &dkp_attach, NULL,\r
500 &dkp_dib, DEV_DISABLE\r
501 };\r
502\r
503\r
504/* IOT routine */\r
505\r
506int32 dkp (int32 pulse, int32 code, int32 AC)\r
507{\r
508UNIT *uptr;\r
509int32 u, rval, dtype;\r
510\r
511rval = 0;\r
512uptr = dkp_dev.units + GET_UNIT (dkp_ussc); /* select unit */\r
513dtype = GET_DTYPE (uptr->flags); /* get drive type */\r
514\r
515if ( DKP_TRACE(0) )\r
516 {\r
517 static char * f[8] =\r
518 { "NIO", "DIA", "DOA", "DIB", "DOB", "DIC", "DOC", "SKP" } ;\r
519 static char * s[4] =\r
520 { " ", "S", "C", "P" } ;\r
521\r
522 printf( " [DKP %s%s %06o ", f[code & 0x07], s[pulse & 0x03], (AC & 0xFFFF) ) ;\r
523 }\r
524\r
525switch (code) { /* decode IR<5:7> */\r
526\r
527 case ioDIA: /* DIA */\r
528 dkp_sta = dkp_sta & (~STA_DRDY) ; /* keep error flags */\r
529 if (uptr->flags & UNIT_ATT) /* update ready */\r
530 dkp_sta = dkp_sta | STA_DRDY;\r
531 if (uptr->CYL >= drv_tab[dtype].cyl)\r
532 dkp_sta = dkp_sta | STA_CYL; /* bad cylinder? */\r
533 if (dkp_sta & STA_EFLGS)\r
534 dkp_sta = dkp_sta | STA_ERR;\r
535 rval = dkp_sta;\r
536 break;\r
537\r
538 case ioDOA: /* DOA */\r
539 if (AC & 0100000) /* clear rw done? */\r
540 dkp_sta = dkp_sta & ~(STA_CYL|STA_XCY|STA_UNS|STA_CRC);\r
541 if ((dev_busy & INT_DKP) == 0) {\r
542 dkp_fccy = AC; /* save cmd, cyl */\r
543 dkp_sta = dkp_sta & ~(AC & FCCY_FLAGS);\r
544 }\r
545 DEV_CLR_DONE( INT_DKP ) ; /* assume done flags 0 */\r
546 if ( dkp_sta & STA_DFLGS ) /* done flags = 0? */\r
547 DEV_SET_DONE( INT_DKP ) ; /* nope - set done */\r
548 DEV_UPDATE_INTR ; /* update intr */\r
549 break;\r
550\r
551 case ioDIB: /* DIB */\r
552 rval = dkp_ma & 077777 ; /* return buf addr */\r
553 /* with B0 clear (no DCH B map support) */\r
554 break;\r
555\r
556 case ioDOB: /* DOB */\r
557 if ((dev_busy & INT_DKP) == 0) {\r
558 dkp_ma = AC & (drv_tab[dtype].newf? DMASK: AMASK);\r
559 if (AC & 0100000)\r
560 dkp_map = 3; /* high bit is map */\r
561 else\r
562 dkp_map = 0;\r
563 }\r
564 break;\r
565\r
566 case ioDIC: /* DIC */\r
567 rval = dkp_ussc; /* return unit, sect */\r
568 break;\r
569\r
570 case ioDOC: /* DOC */\r
571 if ((dev_busy & INT_DKP) == 0) /* if device is not busy */\r
572 dkp_ussc = AC ; /* save unit, sect */\r
573 if (((dtype == TYPE_6099) || /* (BKR: don't forget 6097) */\r
574 (dtype == TYPE_6097) || /* for 6099 and 6103 */\r
575 (dtype == TYPE_6103)) && /* if data<0> set, */\r
576 (AC & 010000) )\r
577 dkp_diagmode = 1; /* set diagnostic mode */\r
578 break;\r
579 } /* end switch code */\r
580\r
581u = GET_UNIT(dkp_ussc); /* update current unit */\r
582uptr = dkp_dev.units + u ; /* select unit */\r
583dtype = GET_DTYPE (uptr->flags); /* get drive type */\r
584\r
585if ( DKP_TRACE(0) )\r
586 {\r
587 if ( code & 1 )\r
588 printf( " [%06o] ", (rval & 0xFFFF) ) ;\r
589 printf( "] \n" ) ;\r
590 }\r
591\r
592switch (pulse) { /* decode IR<8:9> */\r
593\r
594 case iopS: /* start */\r
595 DEV_SET_BUSY( INT_DKP ) ; /* set busy */\r
596 DEV_CLR_DONE( INT_DKP ) ; /* clear done */\r
597 DEV_UPDATE_INTR ; /* update ints */\r
598 if (dkp_diagmode) { /* in diagnostic mode? */\r
599 dkp_diagmode = 0; /* reset it */\r
600 if (dtype == TYPE_6097) dkp_ussc = 010001; /* (BKR - quad floppy) */\r
601 if (dtype == TYPE_6099) dkp_ussc = 010002; /* return size bits */\r
602 if (dtype == TYPE_6103) dkp_ussc = 010003; /* for certain types */\r
603 } \r
604 else { /* normal mode ... */\r
605 if (dkp_go (pulse)) /* do command */\r
606 break ; /* break if no error */\r
607 }\r
608 DEV_CLR_BUSY( INT_DKP ) ; /* clear busy */\r
609 DEV_SET_DONE( INT_DKP ) ; /* set done */\r
610 DEV_UPDATE_INTR ; /* update ints */\r
611 dkp_sta = dkp_sta | STA_DONE; /* set controller done */\r
612 break;\r
613\r
614 case iopC: /* clear */\r
615 DEV_CLR_BUSY( INT_DKP ) ; /* clear busy */\r
616 DEV_CLR_DONE( INT_DKP ) ; /* set done */\r
617 DEV_UPDATE_INTR ; /* update ints */\r
618 dkp_sta = dkp_sta & ~(STA_DFLGS + STA_EFLGS); /* clear controller flags */\r
619 if (dkp_unit[u].FUNC != FCCY_SEEK)\r
620 sim_cancel (&dkp_unit[u]); /* cancel any r/w op */\r
621 break;\r
622\r
623 case iopP: /* pulse */\r
624 if ( dkp_diagmode )\r
625 {\r
626 dkp_diagmode = 0 ; /* clear DG diagnostic mode */\r
627 }\r
628 else\r
629 {\r
630 DEV_CLR_DONE( INT_DKP ) ; /* clear done */\r
631 DEV_UPDATE_INTR ;\r
632\r
633 /* DG "undocumented feature": 'P' pulse can not start a read/write operation!\r
634 * Diagnostic routines will use this crock to do 'crazy things' to size a disk\r
635 * and many assume that a recal is done, other assume that they can stop the\r
636 * read operation before any damage is done. Must also [re]calculate unit, function\r
637 * and type because DOx instruction may have updated the controller info after\r
638 * start of this procedure and before our 'P' handler. BKR\r
639 */\r
640 if (dkp_go(pulse))\r
641 break; /* no error - do not set done and status */\r
642 }\r
643\r
644 DEV_SET_DONE( INT_DKP ) ; /* set done */\r
645 DEV_UPDATE_INTR ; /* update ints */\r
646 dkp_sta = dkp_sta | (STA_SKDN0 >> u); /* set controller seek done */\r
647 break;\r
648 } /* end case pulse */\r
649\r
650return rval;\r
651}\r
652\r
653\r
654/* New command, start vs pulse handled externally\r
655 Returns true if command ok, false if error\r
656*/\r
657\r
658t_stat dkp_go ( int32 pulse )\r
659{\r
660UNIT * uptr;\r
661int32 oldCyl, u, dtype;\r
662\r
663dkp_sta = dkp_sta & ~STA_EFLGS; /* clear errors */\r
664u = GET_UNIT (dkp_ussc); /* get unit number */\r
665uptr = dkp_dev.units + u; /* get unit */\r
666if (((uptr->flags & UNIT_ATT) == 0) || sim_is_active (uptr)) {\r
667 dkp_sta = dkp_sta | STA_ERR; /* attached or busy? */\r
668 return FALSE;\r
669 }\r
670\r
671if (dkp_diagmode) { /* diagnostic mode? */\r
672 dkp_sta = (dkp_sta | STA_DONE); /* Set error bit only */\r
673 DEV_CLR_BUSY( INT_DKP ) ; /* clear busy */\r
674 DEV_SET_DONE( INT_DKP ) ; /* set done */\r
675 DEV_UPDATE_INTR ; /* update interrupts */\r
676 return ( TRUE ) ; /* do not do function */\r
677 }\r
678\r
679oldCyl = uptr->CYL ; /* get old cylinder */\r
680dtype = GET_DTYPE (uptr->flags); /* get drive type */\r
681uptr->FUNC = GET_CMD (dkp_fccy, dtype) ; /* save command */\r
682uptr->CYL = GET_CYL (dkp_fccy, dtype) ;\r
683\r
684if ( DKP_TRACE(1) )\r
685 {\r
686 int32 xSect ;\r
687 int32 xSurf ;\r
688 int32 xCyl ;\r
689 int32 xCnt ;\r
690\r
691 xSect = GET_SECT(dkp_ussc, dtype) ;\r
692 xSurf = GET_SURF(dkp_ussc, dtype) ;\r
693 xCyl = GET_CYL (dkp_fccy, dtype) ;\r
694 xCnt = 16 - (GET_COUNT(dkp_ussc)) ;\r
695\r
696 fprintf( DKP_TRACE_FP,\r
697 " [%s:%c %-5s: %3d / %2d / %2d %2d %06o ] \r\n",\r
698 "DKP",\r
699 (char) (u + '0'),\r
700 ((uptr->FUNC == FCCY_READ) ?\r
701 "read"\r
702 : ((uptr->FUNC == FCCY_WRITE) ?\r
703 "write"\r
704 : ((uptr->FUNC == FCCY_SEEK) ?\r
705 "seek"\r
706 : "<???>"\r
707 )\r
708 )\r
709 ),\r
710 (unsigned) xCyl,\r
711 (unsigned) xSurf,\r
712 (unsigned) xSect,\r
713 (unsigned) (16 - xCnt),\r
714 (unsigned) (dkp_ma & 0xFFFF) /* show all 16-bits in case DCH B */\r
715 ) ;\r
716 }\r
717\r
718\r
719switch (uptr->FUNC) { /* decode command */\r
720\r
721 case FCCY_READ:\r
722 case FCCY_WRITE:\r
723 if (((uptr->flags & UNIT_ATT) == 0) || /* not attached? */\r
724 ((uptr->flags & UNIT_WPRT) && (uptr->FUNC == FCCY_WRITE)))\r
725 {\r
726 dkp_sta = dkp_sta | STA_DONE | STA_ERR; /* error */\r
727 }\r
728 else if ( uptr->CYL >= drv_tab[dtype].cyl ) /* bad cylinder */\r
729 {\r
730 dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_CYL ;\r
731 }\r
732 else if ( GET_SURF(dkp_ussc, dtype) >= drv_tab[dtype].surf ) /* bad surface */\r
733 {\r
734 dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_UNS; /* older drives may not even do this... */\r
735 /* dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_XCY ; /- newer disks give this error */\r
736 }\r
737 else if ( GET_SECT(dkp_ussc, dtype) >= drv_tab[dtype].sect ) /* or bad sector? */\r
738 {\r
739 /* dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_UNS; /- older drives may not even do this... */\r
740 dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_XCY ; /* newer disks give this error */\r
741 }\r
742 if ( (pulse != iopS) || (dkp_sta & STA_ERR) )\r
743 {\r
744 return ( FALSE ) ;\r
745 }\r
746 sim_activate (uptr, dkp_rwait); /* schedule read or write request */\r
747 break;\r
748\r
749 case FCCY_RECAL: /* recalibrate */\r
750 uptr->FUNC = FCCY_SEEK ; /* save command */\r
751 uptr->CYL = 0 ;\r
752\r
753 case FCCY_SEEK: /* seek */\r
754 if ( ! (uptr->flags & UNIT_ATT) ) /* not attached? */\r
755 {\r
756 dkp_sta = dkp_sta | STA_DONE | STA_ERR; /* error */\r
757 }\r
758 else if ( uptr->CYL >= drv_tab[dtype].cyl ) /* bad cylinder? */\r
759 {\r
760 dkp_sta = dkp_sta | STA_ERR | STA_CYL;\r
761 }\r
762 if ( (pulse != iopP) || (dkp_sta & STA_ERR) )\r
763 {\r
764 return ( FALSE ) ; /* only 'P' pulse start seeks! */\r
765 }\r
766\r
767 /* do the seek */\r
768 /* must check for "do we support seeking bits" flag before setting SEEK0'ish bits! */\r
769 dkp_sta = dkp_sta | (STA_SEEK0 >> u); /* set seeking */\r
770 oldCyl = abs(oldCyl - uptr->CYL) ;\r
771 if ( (dkp_swait) && (! (oldCyl)) ) /* enforce minimum wait if req */\r
772 oldCyl = 1 ;\r
773 sim_activate ( uptr, (dkp_swait * oldCyl) ) ;\r
774 break;\r
775 } /* end case command */\r
776\r
777return ( TRUE ) ; /* no error */\r
778}\r
779\r
780\r
781/* Unit service\r
782\r
783 If seek done, put on cylinder;\r
784 else, do read or write\r
785 If controller was busy, clear busy, set done, interrupt\r
786\r
787 Memory access: sectors are read into/written from an intermediate\r
788 buffer to allow word-by-word mapping of memory addresses on the\r
789 Eclipse. This allows each word written to memory to be tested\r
790 for out of range.\r
791*/\r
792\r
793t_stat dkp_svc (UNIT *uptr)\r
794{\r
795int32 sa, bda;\r
796int32 dx, pa, u;\r
797int32 dtype, err, newsect, newsurf;\r
798uint32 awc;\r
799t_stat rval;\r
800static uint16 tbuf[DKP_NUMWD]; /* transfer buffer */\r
801\r
802\r
803rval = SCPE_OK;\r
804dtype = GET_DTYPE (uptr->flags); /* get drive type */\r
805u = uptr - dkp_dev.units; /* get unit number */\r
806\r
807if (uptr->FUNC == FCCY_SEEK) { /* seek? */\r
808 if ( ! (uptr->flags & UNIT_ATT) ) /* not attached? */\r
809 {\r
810 dkp_sta = dkp_sta | STA_DONE | STA_ERR; /* error (changed during queue time?) */\r
811 }\r
812 else if ( uptr->CYL >= drv_tab[dtype].cyl ) /* bad cylinder? */\r
813 {\r
814 dkp_sta = dkp_sta | STA_ERR | STA_CYL;\r
815 }\r
816 DEV_SET_DONE( INT_DKP ) ;\r
817 DEV_UPDATE_INTR ;\r
818 dkp_sta = (dkp_sta | (STA_SKDN0 >> u)) /* set seek done */\r
819 & ~(STA_SEEK0 >> u); /* clear seeking */\r
820 if ( DKP_TRACE(2) )\r
821 {\r
822 fprintf( DKP_TRACE_FP,\r
823 " [%s:%c seek : %4d ] \r\n",\r
824 "DKP",\r
825 (char) (u + '0'),\r
826 (unsigned) (uptr->CYL)\r
827 ) ;\r
828 }\r
829 return SCPE_OK;\r
830 }\r
831\r
832/* read or write */\r
833\r
834if (((uptr->flags & UNIT_ATT) == 0) || /* not attached? */\r
835 ((uptr->flags & UNIT_WPRT) && (uptr->FUNC == FCCY_WRITE)))\r
836 {\r
837 dkp_sta = dkp_sta | STA_DONE | STA_ERR; /* error */\r
838 }\r
839else if ( uptr->CYL >= drv_tab[dtype].cyl ) /* bad cylinder */\r
840 {\r
841 dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_CYL ;\r
842 dkp_sta = dkp_sta | STA_ERR | STA_CYL;\r
843 DEV_SET_DONE( INT_DKP ) ;\r
844 DEV_UPDATE_INTR ;\r
845 return SCPE_OK ;\r
846 }\r
847else if ( GET_SURF(dkp_ussc, dtype) >= drv_tab[dtype].surf ) /* bad surface */\r
848 {\r
849 dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_UNS; /* older drives may not even do this... */\r
850/* dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_XCY ; /- newer disks give this error */\r
851/* set sector to some bad value and wait then exit? */\r
852 }\r
853else if ( GET_SECT(dkp_ussc, dtype) >= drv_tab[dtype].sect ) /* or bad sector? */\r
854 {\r
855/* dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_UNS; /- older DG drives do not even give error(!), but we do */\r
856 dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_XCY ; /* newer disks give this error */\r
857 }\r
858else {\r
859err = 0 ;\r
860do {\r
861 if ( DKP_TRACE(3) )\r
862 {\r
863 fprintf( DKP_TRACE_FP,\r
864 " [%s:%c %-5s: %3d / %2d / %2d %06o ] \r\n",\r
865 "DKP",\r
866 (char) (u + '0'),\r
867 ((uptr->FUNC == FCCY_READ) ?\r
868 "read"\r
869 : ((uptr->FUNC == FCCY_WRITE) ?\r
870 "write"\r
871 : "<???>")\r
872 ),\r
873 (unsigned) (uptr->CYL),\r
874 (unsigned) (GET_SURF(dkp_ussc, dtype)),\r
875 (unsigned) (GET_SECT(dkp_ussc, dtype)),\r
876 (unsigned) (dkp_ma & 0xFFFF) /* show all 16-bits in case DCH B */\r
877 ) ;\r
878 }\r
879\r
880\r
881 if ( GET_SECT(dkp_ussc, dtype) >= drv_tab[dtype].sect ) /* or bad sector? */\r
882 {\r
883 /* sector overflows to 0 ;\r
884 * surface gets incremented\r
885 */\r
886 newsurf = GET_SURF(dkp_ussc, dtype) + 1 ;\r
887 newsurf = newsurf & ((drv_tab[dtype].newf) ? USSC_M_NSURFACE : USSC_M_OSURFACE) ;\r
888 DKP_UPDATE_USSC( type, 0, newsurf, 0 )\r
889\r
890 if ( (GET_SURF(dkp_ussc, dtype)) >= drv_tab[dtype].surf )\r
891 {\r
892 /* dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_UNS; /- older drives may not even do this... */\r
893 dkp_sta = dkp_sta | STA_DONE | STA_ERR | STA_XCY ; /* newer disks give this error */\r
894 /* DG retains overflowed surface number,\r
895 * other vendors have different/expanded options\r
896 */\r
897 break ;\r
898 }\r
899 }\r
900 sa = GET_SA (uptr->CYL, GET_SURF (dkp_ussc, dtype),\r
901 GET_SECT (dkp_ussc, dtype), dtype); /* get disk block */\r
902 bda = sa * DKP_NUMWD * sizeof(uint16) ; /* to words, bytes */\r
903 err = fseek (uptr->fileref, bda, SEEK_SET); /* position drive */\r
904\r
905 if (uptr->FUNC == FCCY_READ) { /* read? */\r
906 awc = fxread (tbuf, sizeof(uint16), DKP_NUMWD, uptr->fileref);\r
907 for ( ; awc < DKP_NUMWD; awc++) tbuf[awc] = 0;\r
908 if (err = ferror (uptr->fileref)) break;\r
909 for (dx = 0; dx < DKP_NUMWD; dx++) { /* loop thru buffer */\r
910 pa = MapAddr (dkp_map, (dkp_ma & AMASK));\r
911 if (MEM_ADDR_OK (pa)) M[pa] = tbuf[dx];\r
912 dkp_ma = (dkp_ma + 1) & AMASK;\r
913 }\r
914 }\r
915 else if (uptr->FUNC == FCCY_WRITE) { /* write? */\r
916 for (dx = 0; dx < DKP_NUMWD; dx++) { /* loop into buffer */\r
917 pa = MapAddr (dkp_map, (dkp_ma & AMASK));\r
918 tbuf[dx] = M[pa];\r
919 dkp_ma = (dkp_ma + 1) & AMASK;\r
920 }\r
921 fxwrite (tbuf, sizeof(int16), DKP_NUMWD, uptr->fileref);\r
922 if (err = ferror (uptr->fileref)) break;\r
923 }\r
924\r
925 if (err != 0) {\r
926 perror ("DKP I/O error");\r
927 clearerr (uptr->fileref);\r
928 rval = SCPE_IOERR;\r
929 break ;\r
930 }\r
931\r
932newsect = GET_SECT (dkp_ussc, dtype) + 1 ; /* update next sector */\r
933newsurf = GET_SURF (dkp_ussc, dtype) ; /* and next head */\r
934 /* (count set below) */\r
935DKP_UPDATE_USSC( type, 1, newsurf, newsect )\r
936} /* end read/write loop */\r
937\r
938 while ( (GET_COUNT(dkp_ussc)) ) ;\r
939 dkp_sta = dkp_sta | STA_DONE; /* set status */\r
940\r
941 if ( DKP_TRACE(4) )\r
942 {\r
943 fprintf( DKP_TRACE_FP,\r
944 " [%s:%c %-5s: %3d / %2d / %2d %06o ] \r\n",\r
945 "DKP",\r
946 (char) (u + '0'),\r
947 "post",\r
948 (unsigned) (uptr->CYL),\r
949 (unsigned) (GET_SURF(dkp_ussc, dtype)),\r
950 (unsigned) (GET_SECT(dkp_ussc, dtype)),\r
951 (unsigned) (dkp_ma & 0xFFFF) /* show all 16-bits in case DCH B */\r
952 ) ;\r
953 }\r
954 }\r
955\r
956DEV_CLR_BUSY( INT_DKP ) ;\r
957DEV_SET_DONE( INT_DKP ) ;\r
958DEV_UPDATE_INTR ;\r
959return rval;\r
960}\r
961\r
962/* Reset routine */\r
963\r
964t_stat dkp_reset (DEVICE *dptr)\r
965{\r
966int32 u;\r
967UNIT *uptr;\r
968\r
969DEV_CLR_BUSY( INT_DKP ) ; /* clear busy */\r
970DEV_CLR_DONE( INT_DKP ) ; /* clear done */\r
971DEV_UPDATE_INTR ; /* update ints */\r
972dkp_fccy = dkp_ussc = dkp_ma = dkp_sta = 0; /* clear registers */\r
973dkp_diagmode = 0; /* clear diagnostic mode */\r
974dkp_map = 0;\r
975for (u = 0; u < DKP_NUMDR; u++) { /* loop thru units */\r
976 uptr = dkp_dev.units + u;\r
977 sim_cancel (uptr); /* cancel activity */\r
978 uptr->CYL = uptr->FUNC = 0;\r
979 }\r
980return SCPE_OK;\r
981}\r
982\r
983/* Attach routine (with optional autosizing) */\r
984\r
985t_stat dkp_attach (UNIT *uptr, char *cptr)\r
986{\r
987int32 i, p;\r
988t_stat r;\r
989\r
990uptr->capac = drv_tab[GET_DTYPE (uptr->flags)].size; /* restore capac */\r
991r = attach_unit (uptr, cptr); /* attach */\r
992if ((r != SCPE_OK) || !(uptr->flags & UNIT_AUTO)) return r;\r
993if ((p = sim_fsize (uptr->fileref)) == 0) return SCPE_OK; /* get file size */\r
994for (i = 0; drv_tab[i].sect != 0; i++) {\r
995 if (p <= (drv_tab[i].size * (int32) sizeof (uint16))) {\r
996 uptr->flags = (uptr->flags & ~UNIT_DTYPE) | (i << UNIT_V_DTYPE);\r
997 uptr->capac = drv_tab[i].size;\r
998 return SCPE_OK;\r
999 }\r
1000 }\r
1001return SCPE_OK;\r
1002}\r
1003\r
1004/* Set size command validation routine */\r
1005\r
1006t_stat dkp_set_size (UNIT *uptr, int32 val, char *cptr, void *desc)\r
1007{\r
1008if (uptr->flags & UNIT_ATT) return SCPE_ALATT;\r
1009uptr->capac = drv_tab[GET_DTYPE (val)].size;\r
1010return SCPE_OK;\r
1011}\r
1012\r
1013/* Bootstrap routine */\r
1014\r
1015#if defined(_OLD_CODE_)\r
1016\r
1017#define BOOT_START 02000\r
1018#define BOOT_UNIT 02021\r
1019#define BOOT_SEEK 02022\r
1020#define BOOT_LEN (sizeof(boot_rom) / sizeof(int32))\r
1021\r
1022static const int32 boot_rom[] = {\r
1023 0060233, /* NIOC 0,DKP ; clear disk */\r
1024 0020420, /* LDA 0,USSC ; unit, sfc, sec, cnt */\r
1025 0063033, /* DOC 0,DKP ; select disk */\r
1026 0020417, /* LDA 0,SEKCMD ; command, cylinder */\r
1027 0061333, /* DOAP 0,DKP ; start seek */\r
1028 0024415, /* LDA 1,SEKDN */\r
1029 0060433, /* DIA 0,DKP ; get status */\r
1030 0123415, /* AND# 1,0,SZR ; skip if done */\r
1031 0000776, /* JMP .-2 */\r
1032 0102400, /* SUB 0,0 ; mem addr = 0 */\r
1033 0062033, /* DOB 0,DKP */\r
1034 0020411, /* LDA 0,REDCMD ; command, cylinder */\r
1035 0061133, /* DOAS 0,DKP ; start read */\r
1036 0060433, /* DIA 0, DKP ; get status */\r
1037 0101113, /* MOVL# 0,0,SNC ; skip if done */\r
1038 0000776, /* JMP .-2 */\r
1039 0000377, /* JMP 377 */\r
1040 0000016, /* USSC: 0.B1+0.B7+0.B11+16 */\r
1041 0175000, /* SEKCMD: 175000 */\r
1042 0074000, /* SEKDN: 074000 */\r
1043 0174000 /* REDCMD: 174000 */\r
1044 };\r
1045\r
1046\r
1047t_stat dkp_boot (int32 unitno, DEVICE *dptr)\r
1048{\r
1049int32 i, dtype;\r
1050extern int32 saved_PC, SR;\r
1051\r
1052for (i = 0; i < BOOT_LEN; i++) M[BOOT_START + i] = boot_rom[i];\r
1053unitno = unitno & USSC_M_UNIT;\r
1054dtype = GET_DTYPE (dkp_unit[unitno].flags);\r
1055M[BOOT_UNIT] = M[BOOT_UNIT] | (unitno << USSC_V_UNIT);\r
1056if (drv_tab[dtype].newf) M[BOOT_SEEK] = 0176000;\r
1057saved_PC = BOOT_START;\r
1058SR = 0100000 + DEV_DKP;\r
1059return SCPE_OK;\r
1060}\r
1061\r
1062#endif /* _OLD_CODE_ */\r
1063\r
1064\r
1065\r
1066#define BOOT_START 0375\r
1067#define BOOT_LEN (sizeof (boot_rom) / sizeof (int32))\r
1068\r
1069static const int32 boot_rom[] = {\r
1070 0062677 /* IORST ; reset the I/O system */\r
1071 , 0060133 /* NIOS DKP ; start the disk */\r
1072 , 0000377 /* JMP 377 ; wait for the world */\r
1073 } ;\r
1074\r
1075\r
1076t_stat dkp_boot (int32 unitno, DEVICE *dptr)\r
1077{\r
1078int32 i;\r
1079\r
1080for (i = 0; i < BOOT_LEN; i++) M[BOOT_START + i] = (uint16) boot_rom[i];\r
1081saved_PC = BOOT_START;\r
1082SR = 0100000 + DEV_DKP;\r
1083return SCPE_OK;\r
1084}\r
Magically enhanced SIMH