forked from open-simh/simh
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathnova_defs.h
329 lines (271 loc) · 15.2 KB
/
nova_defs.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
/* nova_defs.h: NOVA/Eclipse simulator definitions
Copyright (c) 1993-2012, Robert M. Supnik
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of Robert M Supnik shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from Robert M Supnik.
25-Mar-12 RMS Added missing parameters to prototypes (Mark Pizzolato)
22-May-10 RMS Added check for 64b definitions
04-Jul-07 BKR BUSY/DONE/INTR "convenience" macros added,
INT_TRAP added for Nova 3, 4 trap instruction handling,
support for 3rd-party 64KW Nova extensions added,
removed STOP_IND_TRP definition due to common INT/TRP handling
14-Jan-04 BKR Added support for QTY and ALM
22-Nov-03 CEO Added support for PIT device
19-Jan-03 RMS Changed CMASK to CDMASK for Apple Dev kit conflict
03-Oct-02 RMS Added device information structure
22-Dec-00 RMS Added Bruce Ray's second terminal support
10-Dec-00 RMS Added Charles Owen's Eclipse support
08-Dec-00 RMS Added Bruce Ray's plotter support
15-Oct-00 RMS Added stack, byte, trap instructions
14-Apr-99 RMS Changed t_addr to unsigned
16-Mar-95 RMS Added dynamic memory size
06-Dec-95 RMS Added magnetic tape
The author gratefully acknowledges the help of Tom West, Diana Englebart,
Carl Friend, Bruce Ray, and Charles Owen in resolving questions about
the NOVA.
*/
#ifndef NOVA_DEFS_H_
#define NOVA_DEFS_H_ 0
#include "sim_defs.h" /* simulator defns */
#if (defined(USE_INT64) && !defined(ECLIPSE)) || defined(USE_ADDR64)
#error "Nova does not support 64b values!"
#endif
/* Simulator stop codes */
#define STOP_RSRV 1 /* must be 1 */
#define STOP_HALT 2 /* HALT */
#define STOP_IBKPT 3 /* breakpoint */
#define STOP_IND 4 /* indirect loop */
#define STOP_IND_INT 5 /* ind loop, intr or trap */
/* Memory */
#if defined (ECLIPSE)
/*----------------------*/
/* Eclipse */
/*----------------------*/
#define MAXMEMSIZE 1048576 /* max memory size in 16-bit words */
#define PAMASK (MAXMEMSIZE - 1) /* physical addr mask */
#define MEM_ADDR_OK(x) (((uint32) (x)) < (uint32) MEMSIZE)
#else
/*----------------------*/
/* Nova */
/*----------------------*/
#define MAXMEMSIZE 65536 /* max memory size in 16-bit words: 32KW = DG max, */
/* 64 KW = 3rd-party extended memory feature */
#define DFTMEMSIZE 32768 /* default/initial mem size */
#define MEM_ADDR_OK(x) (((uint32) (x)) < (uint32) MEMSIZE)
#endif
#define MEMSIZE (cpu_unit.capac) /* actual memory size */
#define A_V_IND 15 /* ind: indirect */
#define A_IND (1 << A_V_IND)
/* Architectural constants */
#define SIGN 0100000 /* sign */
#define DMASK 0177777 /* data mask */
#define CBIT (DMASK + 1) /* carry bit */
#define CDMASK (CBIT | DMASK) /* carry + data */
/* Reserved memory locations */
#define INT_SAV 0 /* intr saved PC */
#define INT_JMP 1 /* intr jmp @ */
#define STK_JMP 3 /* stack jmp @ */
#define TRP_SAV 046 /* trap saved PC */
#define TRP_JMP 047 /* trap jmp @ */
#define AUTO_TOP 037 /* top of autoindex */
#define AUTO_DEC 030 /* start autodec */
#define AUTO_INC 020 /* start autoinc */
/* Instruction format */
#define I_OPR 0100000 /* operate */
#define I_M_SRC 03 /* OPR: src AC */
#define I_V_SRC 13
#define I_GETSRC(x) (((x) >> I_V_SRC) & I_M_SRC)
#define I_M_DST 03 /* dst AC */
#define I_V_DST 11
#define I_GETDST(x) (((x) >> I_V_DST) & I_M_DST)
#define I_M_ALU 07 /* OPR: ALU op */
#define I_V_ALU 8
#define I_GETALU(x) (((x) >> I_V_ALU) & I_M_ALU)
#define I_M_SHF 03 /* OPR: shift */
#define I_V_SHF 6
#define I_GETSHF(x) (((x) >> I_V_SHF) & I_M_SHF)
#define I_M_CRY 03 /* OPR: carry */
#define I_V_CRY 4
#define I_GETCRY(x) (((x) >> I_V_CRY) & I_M_CRY)
#define I_V_NLD 3 /* OPR: no load */
#define I_NLD (1 << I_V_NLD)
#define I_M_SKP 07 /* OPR: skip */
#define I_V_SKP 0
#define I_GETSKP(x) (((x) >> I_V_SKP) & I_M_SKP)
#define I_M_OPAC 017 /* MRF: opcode + AC */
#define I_V_OPAC 11
#define I_GETOPAC(x) (((x) >> I_V_OPAC) & I_M_OPAC)
#define I_V_IND 10 /* MRF: indirect */
#define I_IND (1 << I_V_IND)
#define I_M_MODE 03 /* MRF: mode */
#define I_V_MODE 8
#define I_GETMODE(x) (((x) >> I_V_MODE) & I_M_MODE)
#define I_M_DISP 0377 /* MRF: disp */
#define I_V_DISP 0
#define I_GETDISP(x) (((x) >> I_V_DISP) & I_M_DISP)
#define DISPSIZE (I_M_DISP + 1) /* page size */
#define DISPSIGN (DISPSIZE >> 1) /* page sign */
#define I_M_IOT 07 /* IOT: code */
#define I_V_IOT 8
#define I_GETIOT(x) (((x) >> I_V_IOT) & I_M_IOT)
#define I_M_PULSE 03 /* IOT pulse */
#define I_V_PULSE 6
#define I_GETPULSE(x) (((x) >> I_V_PULSE) & I_M_PULSE)
#define I_M_DEV 077 /* IOT: device */
#define I_V_DEV 0
#define I_GETDEV(x) (((x) >> I_V_DEV) & I_M_DEV)
#define I_M_XOP 037 /* XOP: code */
#define I_V_XOP 6
#define I_GETXOP(x) (((x) >> I_V_XOP) & I_M_XOP)
/* IOT return codes */
#define IOT_V_REASON 16 /* set reason */
#define IORETURN(f,v) ((f)? (v): SCPE_OK) /* stop on error */
/* IOT fields */
#define ioNIO 0 /* opcode field */
#define ioDIA 1
#define ioDOA 2
#define ioDIB 3
#define ioDOB 4
#define ioDIC 5
#define ioDOC 6
#define ioSKP 7
#define iopN 0 /* pulse field */
#define iopS 1
#define iopC 2
#define iopP 3
/* Device numbers */
#define DEV_LOW 010 /* lowest intr dev */
#define DEV_HIGH 051 /* highest intr dev */
#define DEV_MDV 001 /* multiply/divide */
#define DEV_ECC 002 /* ECC memory control */
#define DEV_MAP 003 /* MMPU control */
#define DEV_TTI 010 /* console input */
#define DEV_TTO 011 /* console output */
#define DEV_PTR 012 /* paper tape reader */
#define DEV_PTP 013 /* paper tape punch */
#define DEV_CLK 014 /* clock */
#define DEV_PLT 015 /* plotter */
#define DEV_CDR 016 /* card reader */
#define DEV_LPT 017 /* line printer */
#define DEV_DSK 020 /* fixed head disk */
#define DEV_MTA 022 /* magtape */
#define DEV_DCM 024 /* data comm mux */
#define DEV_ADCV 030 /* A/D converter */
#define DEV_QTY 030 /* 4060 multiplexor */
#define DEV_DKP 033 /* disk pack */
#define DEV_CAS 034 /* cassette */
#define DEV_ALM 034 /* ALM/ULM multiplexor */
#define DEV_PIT 043 /* programmable interval timer */
#define DEV_TTI1 050 /* second console input */
#define DEV_TTO1 051 /* second console output */
#define DEV_CPU 077 /* CPU control */
/* I/O structure
The NOVA I/O structure is tied together by dev_table, indexed by
the device number. Each entry in dev_table consists of
mask device mask for busy, done (simulator representation)
pi pi disable bit (hardware representation)
routine IOT action routine
dev_table is populated at run time from the device information
blocks in each device.
*/
struct ndev {
int32 mask; /* done/busy mask */
int32 pi; /* assigned pi bit */
int32 (*routine)(int32, int32, int32); /* dispatch routine */
};
typedef struct {
int32 dnum; /* device number */
int32 mask; /* done/busy mask */
int32 pi; /* assigned pi bit */
int32 (*routine)(int32, int32, int32); /* dispatch routine */
} DIB;
/* Device flags (simulator representation)
Priority (for INTA) runs from low numbers to high
*/
#define INT_V_PIT 2 /* PIT */
#define INT_V_DKP 3 /* moving head disk */
#define INT_V_DSK 4 /* fixed head disk */
#define INT_V_MTA 5 /* magnetic tape */
#define INT_V_LPT 6 /* line printer */
#define INT_V_CLK 7 /* clock */
#define INT_V_PTR 8 /* paper tape reader */
#define INT_V_PTP 9 /* paper tape punch */
#define INT_V_PLT 10 /* plotter */
#define INT_V_TTI 11 /* keyboard */
#define INT_V_TTO 12 /* terminal */
#define INT_V_TTI1 13 /* second keyboard */
#define INT_V_TTO1 14 /* second terminal */
#define INT_V_QTY 15 /* QTY multiplexor */
#define INT_V_ALM 16 /* ALM multiplexor */
#define INT_V_STK 17 /* stack overflow */
#define INT_V_NO_ION_PENDING 18 /* ion delay */
#define INT_V_ION 19 /* interrupts on */
#define INT_V_TRAP 20 /* trap instruction */
#define INT_PIT (1 << INT_V_PIT)
#define INT_DKP (1 << INT_V_DKP)
#define INT_DSK (1 << INT_V_DSK)
#define INT_MTA (1 << INT_V_MTA)
#define INT_LPT (1 << INT_V_LPT)
#define INT_CLK (1 << INT_V_CLK)
#define INT_PTR (1 << INT_V_PTR)
#define INT_PTP (1 << INT_V_PTP)
#define INT_PLT (1 << INT_V_PLT)
#define INT_TTI (1 << INT_V_TTI)
#define INT_TTO (1 << INT_V_TTO)
#define INT_TTI1 (1 << INT_V_TTI1)
#define INT_TTO1 (1 << INT_V_TTO1)
#define INT_QTY (1 << INT_V_QTY)
#define INT_ALM (1 << INT_V_ALM)
#define INT_STK (1 << INT_V_STK)
#define INT_NO_ION_PENDING (1 << INT_V_NO_ION_PENDING)
#define INT_ION (1 << INT_V_ION)
#define INT_DEV ((1 << INT_V_STK) - 1) /* device ints */
#define INT_PENDING INT_ION+INT_NO_ION_PENDING
#define INT_TRAP (1 << INT_V_TRAP)
/* PI disable bits */
#define PI_PIT 0001000
#define PI_DKP 0000400
#define PI_DSK 0000100
#define PI_MTA 0000040
#define PI_LPT 0000010
#define PI_CLK 0000004
#define PI_PTR 0000020
#define PI_PTP 0000004
#define PI_PLT 0000010
#define PI_QTY 0000002
#define PI_ALM 0000002
#define PI_TTI 0000002
#define PI_TTO 0000001
#define PI_TTI1 PI_TTI
#define PI_TTO1 PI_TTO
/* #define PI_CDR 0000040 */
/* #define PI_DCM 0100000 */
/* #define PI_CAS 0000040 */
/* #define PI_ADCV 0000002 */
/* Macros to clear/set BUSY/DONE/INTR bits */
#define DEV_SET_BUSY( x ) dev_busy = dev_busy | (x)
#define DEV_CLR_BUSY( x ) dev_busy = dev_busy & (~(x))
#define DEV_SET_DONE( x ) dev_done = dev_done | (x)
#define DEV_CLR_DONE( x ) dev_done = dev_done & (~(x))
#define DEV_UPDATE_INTR int_req = (int_req & ~INT_DEV) | (dev_done & ~dev_disable)
#define DEV_IS_BUSY( x ) (dev_busy & (x))
#define DEV_IS_DONE( x ) (dev_done & (x))
/* Function prototypes */
int32 MapAddr (int32 map, int32 addr);
t_stat set_enb (UNIT *uptr, int32 val, char *cptr, void *desc);
t_stat set_dsb (UNIT *uptr, int32 val, char *cptr, void *desc);
#endif