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1 | /* i1620_sys.c: IBM 1620 simulator interface\r |
2 | \r | |
3 | Copyright (c) 2002-2005, 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 | \r | |
27 | #include "i1620_defs.h"\r | |
28 | #include <ctype.h>\r | |
29 | \r | |
30 | #define LINE_LNT 50\r | |
31 | \r | |
32 | extern DEVICE cpu_dev, tty_dev;\r | |
33 | extern DEVICE ptr_dev, ptp_dev;\r | |
34 | extern DEVICE lpt_dev;\r | |
35 | extern DEVICE cdr_dev, cdp_dev;\r | |
36 | extern DEVICE dp_dev;\r | |
37 | extern UNIT cpu_unit;\r | |
38 | extern REG cpu_reg[];\r | |
39 | extern uint8 M[MAXMEMSIZE];\r | |
40 | extern char cdr_to_alp[128], alp_to_cdp[256];\r | |
41 | \r | |
42 | /* SCP data structures and interface routines\r | |
43 | \r | |
44 | sim_name simulator name string\r | |
45 | sim_PC pointer to saved PC register descriptor\r | |
46 | sim_emax maximum number of words for examine/deposit\r | |
47 | sim_devices array of pointers to simulated devices\r | |
48 | sim_stop_messages array of pointers to stop messages\r | |
49 | sim_load binary loader\r | |
50 | */\r | |
51 | \r | |
52 | char sim_name[] = "IBM 1620";\r | |
53 | \r | |
54 | REG *sim_PC = &cpu_reg[0];\r | |
55 | \r | |
56 | int32 sim_emax = LINE_LNT;\r | |
57 | \r | |
58 | DEVICE *sim_devices[] = {\r | |
59 | &cpu_dev,\r | |
60 | &tty_dev,\r | |
61 | &ptr_dev,\r | |
62 | &ptp_dev,\r | |
63 | &cdr_dev,\r | |
64 | &cdp_dev,\r | |
65 | &lpt_dev,\r | |
66 | &dp_dev,\r | |
67 | NULL\r | |
68 | };\r | |
69 | \r | |
70 | const char *sim_stop_messages[] = {\r | |
71 | "Unknown error",\r | |
72 | "HALT instruction",\r | |
73 | "Breakpoint",\r | |
74 | "Invalid instruction",\r | |
75 | "Invalid digit",\r | |
76 | "Invalid character",\r | |
77 | "Invalid indicator",\r | |
78 | "Invalid digit in P address",\r | |
79 | "Invalid P address",\r | |
80 | "P address exceeds indirect address limit",\r | |
81 | "Invalid digit in Q address",\r | |
82 | "Invalid Q address",\r | |
83 | "Q address exceeds indirect address limit",\r | |
84 | "Invalid IO device",\r | |
85 | "Invalid return register",\r | |
86 | "Invalid IO function",\r | |
87 | "Instruction address must be even",\r | |
88 | "Invalid select code",\r | |
89 | "Index instruction with no band selected",\r | |
90 | "P address must be odd",\r | |
91 | "DCF address must be even",\r | |
92 | "Invalid disk drive",\r | |
93 | "Invalid disk sector address",\r | |
94 | "Invalid disk sector count",\r | |
95 | "Invalid disk buffer address",\r | |
96 | "Disk address compare error",\r | |
97 | "Disk write check error",\r | |
98 | "Disk cylinder overflow error",\r | |
99 | "Disk wrong length record error",\r | |
100 | "Invalid CCT",\r | |
101 | "Field exceeds memory",\r | |
102 | "Record exceeds memory",\r | |
103 | "No card in reader",\r | |
104 | "Overflow check",\r | |
105 | "Exponent check",\r | |
106 | "Write address function disabled",\r | |
107 | "Floating point mantissa too long",\r | |
108 | "Floating point mantissa lengths unequal",\r | |
109 | "Floating point exponent flag missing",\r | |
110 | "Floating point divide by zero"\r | |
111 | };\r | |
112 | \r | |
113 | /* Binary loader -- load carriage control tape\r | |
114 | \r | |
115 | A carriage control tape consists of entries of the form\r | |
116 | \r | |
117 | (repeat count) column number,column number,column number,...\r | |
118 | \r | |
119 | The CCT entries are stored in cct[0:lnt-1], cctlnt contains the\r | |
120 | number of entries\r | |
121 | */\r | |
122 | \r | |
123 | t_stat sim_load (FILE *fileref, char *cptr, char *fnam, int flag)\r | |
124 | {\r | |
125 | int32 col, rpt, ptr, mask, cctbuf[CCT_LNT];\r | |
126 | t_stat r;\r | |
127 | extern int32 cct_lnt, cct_ptr, cct[CCT_LNT];\r | |
128 | char cbuf[CBUFSIZE], gbuf[CBUFSIZE];\r | |
129 | \r | |
130 | if ((*cptr != 0) || (flag != 0)) return SCPE_ARG;\r | |
131 | ptr = 0;\r | |
132 | for ( ; (cptr = fgets (cbuf, CBUFSIZE, fileref)) != NULL; ) { /* until eof */\r | |
133 | mask = 0;\r | |
134 | if (*cptr == '(') { /* repeat count? */\r | |
135 | cptr = get_glyph (cptr + 1, gbuf, ')'); /* get 1st field */\r | |
136 | rpt = get_uint (gbuf, 10, CCT_LNT, &r); /* repeat count */\r | |
137 | if (r != SCPE_OK) return SCPE_FMT;\r | |
138 | }\r | |
139 | else rpt = 1;\r | |
140 | while (*cptr != 0) { /* get col no's */\r | |
141 | cptr = get_glyph (cptr, gbuf, ','); /* get next field */\r | |
142 | col = get_uint (gbuf, 10, 12, &r); /* column number */\r | |
143 | if (r != SCPE_OK) return SCPE_FMT;\r | |
144 | mask = mask | (1 << col); /* set bit */\r | |
145 | }\r | |
146 | for ( ; rpt > 0; rpt--) { /* store vals */\r | |
147 | if (ptr >= CCT_LNT) return SCPE_FMT;\r | |
148 | cctbuf[ptr++] = mask;\r | |
149 | }\r | |
150 | }\r | |
151 | if (ptr == 0) return SCPE_FMT;\r | |
152 | cct_lnt = ptr;\r | |
153 | cct_ptr = 0;\r | |
154 | for (rpt = 0; rpt < cct_lnt; rpt++) cct[rpt] = cctbuf[rpt];\r | |
155 | return SCPE_OK;\r | |
156 | }\r | |
157 | \r | |
158 | /* Symbol table */\r | |
159 | \r | |
160 | struct opc {\r | |
161 | char *str; /* mnemonic */\r | |
162 | uint32 opv; /* opcode & flags */\r | |
163 | uint32 qv; /* q field */\r | |
164 | };\r | |
165 | \r | |
166 | #define I_V_FL 16 /* flags */\r | |
167 | #define I_M_QX 0x01 /* Q indexable */\r | |
168 | #define I_M_QM 0x02 /* Q immediate */\r | |
169 | #define I_M_QNP 0x00 /* Q no print */\r | |
170 | #define I_M_QCP 0x04 /* Q cond print */\r | |
171 | #define I_M_QP 0x08 /* Q print */\r | |
172 | #define I_M_PCP 0x00 /* P cond print */\r | |
173 | #define I_M_PP 0x10 /* P print */\r | |
174 | #define I_GETQF(x) (((x) >> I_V_FL) & 0x03)\r | |
175 | #define I_GETQP(x) (((x) >> I_V_FL) & 0x0C)\r | |
176 | #define I_GETPP(x) (((x) >> I_V_FL) & 0x10)\r | |
177 | \r | |
178 | #define I_2 ((I_M_PP | I_M_QP | I_M_QX) << I_V_FL)\r | |
179 | #define I_2M ((I_M_PP | I_M_QP | I_M_QM) << I_V_FL)\r | |
180 | #define I_2X ((I_M_PP | I_M_QP | I_M_QX | I_M_QM) << I_V_FL)\r | |
181 | #define I_2S ((I_M_PP | I_M_QP) << I_V_FL)\r | |
182 | #define I_1 ((I_M_PP | I_M_QCP) << I_V_FL)\r | |
183 | #define I_1E ((I_M_PP | I_M_QNP) << I_V_FL)\r | |
184 | #define I_0 ((I_M_PCP | I_M_QCP) << I_V_FL)\r | |
185 | #define I_0E ((I_M_PCP | I_M_QNP) << I_V_FL)\r | |
186 | \r | |
187 | struct opc opcode[] = {\r | |
188 | { "RNTY", 36+I_1E, 100 }, { "RATY", 37+I_1E, 100 },\r | |
189 | { "WNTY", 38+I_1E, 100 }, { "WATY", 39+I_1E, 100 },\r | |
190 | { "DNTY", 35+I_1E, 100 }, { "SPTY", 34+I_0E, 101 },\r | |
191 | { "RCTY", 34+I_0E, 102 }, { "BKTY", 34+I_0E, 103 },\r | |
192 | { "IXTY", 34+I_0E, 104 }, { "TBTY", 34+I_0E, 108 },\r | |
193 | { "RNPT", 36+I_1E, 300 }, { "RAPT", 37+I_1E, 300 },\r | |
194 | { "WNPT", 38+I_1E, 200 }, { "WAPT", 39+I_1E, 200 },\r | |
195 | { "DNPT", 35+I_1E, 200 },\r | |
196 | { "RNCD", 36+I_1E, 500 }, { "RACD", 37+I_1E, 500 },\r | |
197 | { "WNCD", 38+I_1E, 400 }, { "WACD", 39+I_1E, 400 },\r | |
198 | { "DNCD", 35+I_1E, 400 },\r | |
199 | { "PRN", 38+I_1E, 900 }, { "PRNS", 38+I_1E, 901 },\r | |
200 | { "PRA", 39+I_1E, 900 }, { "PRAS", 39+I_1E, 901 },\r | |
201 | { "PRD", 35+I_1E, 900 }, { "PRDS", 35+I_1E, 901 },\r | |
202 | { "SK", 34+I_1E, 701 },\r | |
203 | { "RDGN", 36+I_1E, 700 }, { "CDGN", 36+I_1E, 701 },\r | |
204 | { "RDN", 36+I_1E, 702 }, { "CDN", 36+I_1E, 703 },\r | |
205 | { "RTGN", 36+I_1E, 704 }, { "CTGN", 36+I_1E, 705 },\r | |
206 | { "RTN", 36+I_1E, 706 }, { "CTN", 36+I_1E, 707 },\r | |
207 | { "WDGN", 38+I_1E, 700 }, { "WDN", 38+I_1E, 702 },\r | |
208 | { "WTGN", 38+I_1E, 704 }, { "WTN", 38+I_1E, 706 },\r | |
209 | { "RBPT", 37+I_1E, 3300 }, { "WBPT", 39+I_1E, 3200 },\r | |
210 | { "BC1", 46+I_1E, 100 }, { "BNC1", 47+I_1E, 100 },\r | |
211 | { "BC2", 46+I_1E, 200 }, { "BNC2", 47+I_1E, 200 },\r | |
212 | { "BC3", 46+I_1E, 300 }, { "BNC3", 47+I_1E, 300 },\r | |
213 | { "BC4", 46+I_1E, 400 }, { "BNC4", 47+I_1E, 400 },\r | |
214 | { "BLC", 46+I_1E, 900 }, { "BNLC", 47+I_1E, 900 },\r | |
215 | { "BH", 46+I_1E, 1100 }, { "BNH", 47+I_1E, 1100 },\r | |
216 | { "BP", 46+I_1E, 1100 }, { "BNP", 47+I_1E, 1100 },\r | |
217 | { "BE", 46+I_1E, 1200 }, { "BNE", 47+I_1E, 1200 },\r | |
218 | { "BZ", 46+I_1E, 1200 }, { "BNZ", 47+I_1E, 1200 },\r | |
219 | { "BNL", 46+I_1E, 1300 }, { "BL", 47+I_1E, 1300 },\r | |
220 | { "BNN", 46+I_1E, 1300 }, { "BN", 47+I_1E, 1300 },\r | |
221 | { "BV", 46+I_1E, 1400 }, { "BNV", 47+I_1E, 1400 },\r | |
222 | { "BXV", 46+I_1E, 1500 }, { "BNXV", 47+I_1E, 1500 },\r | |
223 | { "BA", 46+I_1E, 1900 }, { "BNA", 47+I_1E, 1900 },\r | |
224 | { "BNBS", 46+I_1E, 3000 }, { "BEBS", 47+I_1E, 3000 },\r | |
225 | { "BBAS", 46+I_1E, 3100 }, { "BANS", 47+I_1E, 3100 },\r | |
226 | { "BBBS", 46+I_1E, 3200 }, { "BBNS", 47+I_1E, 3200 },\r | |
227 | { "BCH9", 46+I_1E, 3300 },\r | |
228 | { "BCOV", 46+I_1E, 3400 },\r | |
229 | { "BSNX", 60+I_1E, 0 }, { "BSBA", 60+I_1E, 1 },\r | |
230 | { "BSBB", 60+I_1E, 2 },\r | |
231 | { "BSNI", 60+I_1E, 8 }, { "BSIA", 60+I_1E, 9 },\r | |
232 | \r | |
233 | { "FADD", 1+I_2, 0 }, { "FSUB", 2+I_2, 0 },\r | |
234 | { "FMUL", 3+I_2, 0 }, { "FSL", 5+I_2, 0 },\r | |
235 | { "TFL", 6+I_2, 0 }, { "BTFL", 7+I_2, 0 },\r | |
236 | { "FSR", 8+I_2, 0 }, { "FDIV", 9+I_2, 0 },\r | |
237 | { "BTAM", 10+I_2M, 0 }, { "AM", 11+I_2M, 0 },\r | |
238 | { "SM", 12+I_2M, 0 }, { "MM", 13+I_2M, 0 },\r | |
239 | { "CM", 14+I_2M, 0 }, { "TDM", 15+I_2S, 0 },\r | |
240 | { "TFM", 16+I_2M, 0 }, { "BTM", 17+I_2M, 0 },\r | |
241 | { "LDM", 18+I_2M, 0 }, { "DM", 19+I_2M, 0 },\r | |
242 | { "BTA", 20+I_2, 0 }, { "A", 21+I_2, 0 },\r | |
243 | { "S", 22+I_2, 0 }, { "M", 23+I_2, 0 },\r | |
244 | { "C", 24+I_2, 0 }, { "TD", 25+I_2, 0 },\r | |
245 | { "TF", 26+I_2, 0 }, { "BT", 27+I_2, 0 },\r | |
246 | { "LD", 28+I_2, 0 }, { "D", 29+I_2, 0 },\r | |
247 | { "TRNM", 30+I_2, 0 }, { "TR", 31+I_2, 0 },\r | |
248 | { "SF", 32+I_1, 0 }, { "CF", 33+I_1, 0 },\r | |
249 | { "K", 34+I_2S, 0 }, { "DN", 35+I_2S, 0 },\r | |
250 | { "RN", 36+I_2S, 0 }, { "RA", 37+I_2S, 0 },\r | |
251 | { "WN", 38+I_2S, 0 }, { "WA", 39+I_2S, 0 },\r | |
252 | { "NOP", 41+I_0, 0 }, { "BB", 42+I_0, 0 },\r | |
253 | { "BD", 43+I_2, 0 }, { "BNF", 44+I_2, 0 },\r | |
254 | { "BNR", 45+I_2, 0 }, { "BI", 46+I_2S, 0 },\r | |
255 | { "BNI", 47+I_2S, 0 }, { "H", 48+I_0, 0 },\r | |
256 | { "B", 49+I_1, 0 }, { "BNG", 55+I_2, 0 },\r | |
257 | { "BS", 60+I_2S, 0 }, { "BX", 61+I_2, 0 },\r | |
258 | { "BXM", 62+I_2X, 0 }, { "BCX", 63+I_2, 0 },\r | |
259 | { "BCXM", 64+I_2X, 0 }, { "BLX", 65+I_2, 0 },\r | |
260 | { "BLXM", 66+I_2X, 0 }, { "BSX", 67+I_2, 0 },\r | |
261 | { "MA", 70+I_2, 0 }, { "MF", 71+I_2, 0 },\r | |
262 | { "TNS", 72+I_2, 0 }, { "TNF", 73+I_2, 0 },\r | |
263 | { "BBT", 90+I_2, 0 }, { "BMK", 91+I_2, 0 },\r | |
264 | { "ORF", 92+I_2, 0 }, { "ANDF", 93+I_2, 0 },\r | |
265 | { "CPFL", 94+I_2, 0 }, { "EORF", 95+I_2, 0 },\r | |
266 | { "OTD", 96+I_2, 0 }, { "DTO", 97+I_2, 0 },\r | |
267 | { NULL, 0, 0 }\r | |
268 | };\r | |
269 | \r | |
270 | /* Print an address from five characters */\r | |
271 | \r | |
272 | void fprint_addr (FILE *of, int32 spc, t_value *dig, t_bool flg)\r | |
273 | {\r | |
274 | int32 i, idx;\r | |
275 | \r | |
276 | fputc (spc, of); /* spacer */\r | |
277 | if (dig[ADDR_LEN - 1] & FLAG) { /* signed? */\r | |
278 | fputc ('-', of); /* print minus */\r | |
279 | dig[ADDR_LEN - 1] = dig[ADDR_LEN - 1] & ~FLAG;\r | |
280 | }\r | |
281 | for (i = 0; i < ADDR_LEN; i++) /* print digits */\r | |
282 | fprintf (of, "%X", dig[i] & DIGIT);\r | |
283 | if ((cpu_unit.flags & IF_IDX) && flg) { /* indexing? */\r | |
284 | for (i = idx = 0; i < ADDR_LEN - 2; i++) { /* get index reg */\r | |
285 | if (dig[ADDR_LEN - 2 - i] & FLAG)\r | |
286 | idx = idx | (1 << i);\r | |
287 | dig[ADDR_LEN - 2 - i] = dig[ADDR_LEN - 2 - i] & ~FLAG;\r | |
288 | }\r | |
289 | if (idx) fprintf (of, "(%d)", idx); /* print */\r | |
290 | }\r | |
291 | return;\r | |
292 | }\r | |
293 | \r | |
294 | /* Symbolic decode\r | |
295 | \r | |
296 | Inputs:\r | |
297 | *of = output stream\r | |
298 | addr = current address\r | |
299 | *val = values to decode\r | |
300 | *uptr = pointer to unit\r | |
301 | sw = switches\r | |
302 | Outputs:\r | |
303 | return = if >= 0, error code\r | |
304 | if < 0, number of extra words retired\r | |
305 | */\r | |
306 | \r | |
307 | #define FMTASC(x) ((x) < 040)? "<%03o>": "%c", (x)\r | |
308 | \r | |
309 | t_stat fprint_sym (FILE *of, t_addr addr, t_value *val,\r | |
310 | UNIT *uptr, int32 sw)\r | |
311 | {\r | |
312 | int32 pmp, qmp, i, c, d, any;\r | |
313 | uint32 op, qv, opfl;\r | |
314 | \r | |
315 | if (uptr == NULL) uptr = &cpu_unit;\r | |
316 | if (sw & SWMASK ('C')) { /* character? */\r | |
317 | if (uptr->flags & UNIT_BCD) {\r | |
318 | if (addr & 1) return SCPE_ARG; /* must be even */\r | |
319 | c = ((val[0] & DIGIT) << 4) | (val[1] & DIGIT);\r | |
320 | if (alp_to_cdp[c] > 0)\r | |
321 | fprintf (of, "%c", alp_to_cdp[c]);\r | |
322 | else fprintf (of, "<%02x>", c);\r | |
323 | return -1;\r | |
324 | } \r | |
325 | else fprintf (of, FMTASC (val[0] & 0177));\r | |
326 | return SCPE_OK;\r | |
327 | }\r | |
328 | if ((uptr->flags & UNIT_BCD) == 0) return SCPE_ARG; /* CPU or disk? */\r | |
329 | if (sw & SWMASK ('D')) { /* dump? */\r | |
330 | for (i = d = 0; i < LINE_LNT; i++) d = d | val[i];\r | |
331 | if (d & FLAG) { /* any flags? */\r | |
332 | for (i = 0; i < LINE_LNT; i++) /* print flags */\r | |
333 | fprintf (of, (val[i] & FLAG)? "_": " ");\r | |
334 | fprintf (of, "\n\t");\r | |
335 | }\r | |
336 | for (i = 0; i < LINE_LNT; i++) /* print digits */\r | |
337 | fprintf (of, "%X", val[i] & DIGIT) ;\r | |
338 | return -(i - 1);\r | |
339 | }\r | |
340 | if (sw & SWMASK ('S')) { /* string? */\r | |
341 | if (addr & 1) return SCPE_ARG; /* must be even */\r | |
342 | for (i = 0; i < LINE_LNT; i = i + 2) {\r | |
343 | c = ((val[i] & DIGIT) << 4) | (val[i + 1] & DIGIT);\r | |
344 | if (alp_to_cdp[c] < 0) break;\r | |
345 | fprintf (of, "%c", alp_to_cdp[c]);\r | |
346 | }\r | |
347 | if (i == 0) {\r | |
348 | fprintf (of, "<%02X>", c);\r | |
349 | return -1;\r | |
350 | }\r | |
351 | return -(i - 1);\r | |
352 | }\r | |
353 | if ((sw & SWMASK ('M')) == 0) return SCPE_ARG;\r | |
354 | \r | |
355 | if (addr & 1) return SCPE_ARG; /* must be even */\r | |
356 | op = ((val[0] & DIGIT) * 10) + (val[1] & DIGIT); /* get opcode */\r | |
357 | for (i = qv = pmp = qmp = 0; i < ADDR_LEN; i++) { /* test addr */\r | |
358 | if (val[I_P + i]) pmp = 1;\r | |
359 | if (val[I_Q + i]) qmp = 1;\r | |
360 | qv = (qv * 10) + (val[I_Q + i] & DIGIT);\r | |
361 | }\r | |
362 | if ((val[0] | val[1]) & FLAG) pmp = qmp = 1; /* flags force */\r | |
363 | for (i = 0; opcode[i].str != NULL; i++) { /* find opcode */\r | |
364 | opfl = opcode[i].opv & 0xFF0000;\r | |
365 | if ((op == (opcode[i].opv & 0xFF)) &&\r | |
366 | ((qv == opcode[i].qv) ||\r | |
367 | ((opfl != I_1E) && (opfl != I_0E)))) break;\r | |
368 | }\r | |
369 | if (opcode[i].str == NULL) return SCPE_ARG;\r | |
370 | if (I_GETQP (opfl) == I_M_QNP) qmp = 0; /* Q no print? */\r | |
371 | \r | |
372 | fprintf (of, opcode[i].str); /* print opcode */\r | |
373 | if (I_GETPP (opfl) == I_M_PP) /* P required? */\r | |
374 | fprint_addr (of, ' ', &val[I_P], I_M_QX);\r | |
375 | else if ((I_GETPP (opfl) == I_M_PCP) && (pmp || qmp)) /* P opt & needed? */\r | |
376 | fprint_addr (of, ' ', &val[I_P], 0);\r | |
377 | if (I_GETQP (opfl) == I_M_QP) { /* Q required? */\r | |
378 | fprint_addr (of, ',', &val[I_Q], I_GETQF (opfl));\r | |
379 | if (I_GETQF (opfl) & I_M_QM) /* immediate? */\r | |
380 | val[I_Q] = val[I_Q] & ~FLAG; /* clr hi Q flag */\r | |
381 | }\r | |
382 | else if ((I_GETQP (opfl) == I_M_QCP) && (pmp || qmp)) /* Q opt & needed? */\r | |
383 | fprint_addr (of, ',', &val[I_Q], 0);\r | |
384 | for (i = any = 0; i < INST_LEN; i++) { /* print rem flags */\r | |
385 | if (val[i] & FLAG) {\r | |
386 | if (!any) fputc (',', of);\r | |
387 | any = 1;\r | |
388 | fprintf (of, "%d", i);\r | |
389 | }\r | |
390 | }\r | |
391 | return -(INST_LEN - 1);\r | |
392 | }\r | |
393 | \r | |
394 | /* parse_addr - get sign + address + index */\r | |
395 | \r | |
396 | t_stat parse_addr (char *cptr, t_value *val, int32 flg)\r | |
397 | {\r | |
398 | int32 i, sign = 0, addr, index;\r | |
399 | static int32 idx_tst[ADDR_LEN] = { 0, 4, 2, 1, 0 };\r | |
400 | char *tptr;\r | |
401 | \r | |
402 | if (*cptr == '+') cptr++; /* +? skip */\r | |
403 | else if (*cptr == '-') { /* -? skip, flag */\r | |
404 | sign = 1;\r | |
405 | cptr++;\r | |
406 | }\r | |
407 | errno = 0; /* get address */\r | |
408 | addr = strtoul (cptr, &tptr, 16);\r | |
409 | if (errno || (cptr == tptr) || (addr > 0xFFFFF)) /* err or too big? */\r | |
410 | return SCPE_ARG;\r | |
411 | if ((cpu_unit.flags & IF_IDX) && (flg & I_M_QX) && /* index allowed? */\r | |
412 | (*tptr == '(')) { /* index specified */\r | |
413 | errno = 0;\r | |
414 | index = strtoul (cptr = tptr + 1, &tptr, 10); /* get index */\r | |
415 | if (errno || (cptr == tptr) || (index > 7)) /* err or too big? */\r | |
416 | return SCPE_ARG;\r | |
417 | if (*tptr++ != ')') return SCPE_ARG;\r | |
418 | }\r | |
419 | else index = 0;\r | |
420 | if (*tptr != 0) return SCPE_ARG; /* all done? */\r | |
421 | for (i = ADDR_LEN - 1; i >= 0; i--) { /* cvt addr to dig */\r | |
422 | val[i] = (addr & 0xF) | ((index & idx_tst[i])? FLAG: 0);\r | |
423 | addr = addr >> 4;\r | |
424 | }\r | |
425 | if (sign) val[ADDR_LEN - 1] = val[ADDR_LEN - 1] | FLAG; /* set sign */\r | |
426 | if (flg & I_M_QM) val[0] = val[0] | FLAG; /* set immediate */\r | |
427 | return SCPE_OK;\r | |
428 | }\r | |
429 | \r | |
430 | /* Symbolic input\r | |
431 | \r | |
432 | Inputs:\r | |
433 | *cptr = pointer to input string\r | |
434 | addr = current PC\r | |
435 | *uptr = pointer to unit\r | |
436 | *val = pointer to output values\r | |
437 | sw = switches\r | |
438 | Outputs:\r | |
439 | status = > 0 error code\r | |
440 | <= 0 -number of extra words\r | |
441 | */\r | |
442 | \r | |
443 | t_stat parse_sym (char *cptr, t_addr addr, UNIT *uptr, t_value *val, int32 sw)\r | |
444 | {\r | |
445 | int32 i, qv, opfl, last;\r | |
446 | char t, la, *fptr, gbuf[CBUFSIZE];\r | |
447 | \r | |
448 | while (isspace (*cptr)) cptr++; /* absorb spaces */\r | |
449 | if ((sw & SWMASK ('C')) || ((*cptr == '\'') && cptr++)) { /* character? */\r | |
450 | if ((t = *cptr & 0x7F) == 0) return SCPE_ARG; /* get char */\r | |
451 | if (uptr->flags & UNIT_BCD) { /* BCD? */\r | |
452 | if (addr & 1) return SCPE_ARG;\r | |
453 | t = cdr_to_alp[t]; /* convert */\r | |
454 | if (t < 0) return SCPE_ARG; /* invalid? */\r | |
455 | val[0] = (t >> 4) & DIGIT; /* store */\r | |
456 | val[1] = t & DIGIT;\r | |
457 | return -1;\r | |
458 | }\r | |
459 | else val[0] = t; /* store ASCII */\r | |
460 | return SCPE_OK;\r | |
461 | }\r | |
462 | \r | |
463 | if ((uptr->flags & UNIT_BCD) == 0) return SCPE_ARG; /* CPU or disk? */\r | |
464 | if ((sw & SWMASK ('S')) || ((*cptr == '"') && cptr++)) { /* string? */\r | |
465 | if (addr & 1) return SCPE_ARG; /* must be even */\r | |
466 | for (i = 0; (i < sim_emax) && (*cptr != 0); i = i + 2) {\r | |
467 | t = *cptr++ & 0x7F; /* get character */\r | |
468 | t = cdr_to_alp[t]; /* convert */\r | |
469 | if (t < 0) return SCPE_ARG; /* invalid? */\r | |
470 | val[i] = (t >> 4) & DIGIT; /* store */\r | |
471 | val[i + 1] = t & DIGIT;\r | |
472 | }\r | |
473 | if (i == 0) return SCPE_ARG; /* final check */\r | |
474 | return -(i - 1);\r | |
475 | }\r | |
476 | \r | |
477 | if (addr & 1) return SCPE_ARG; /* even addr? */\r | |
478 | cptr = get_glyph (cptr, gbuf, 0); /* get opcode */\r | |
479 | for (i = 0; opcode[i].str != NULL; i++) { /* look it up */\r | |
480 | if (strcmp (gbuf, opcode[i].str) == 0) break;\r | |
481 | }\r | |
482 | if (opcode[i].str == NULL) return SCPE_ARG; /* successful? */\r | |
483 | opfl = opcode[i].opv & 0xFF0000; /* get flags */\r | |
484 | val[0] = (opcode[i].opv & 0xFF) / 10; /* store opcode */\r | |
485 | val[1] = (opcode[i].opv & 0xFF) % 10;\r | |
486 | qv = opcode[i].qv;\r | |
487 | for (i = ADDR_LEN - 1; i >= 0; i--) { /* set P,Q fields */\r | |
488 | val[I_P + i] = 0;\r | |
489 | val[I_Q + i] = qv % 10;\r | |
490 | qv = qv /10;\r | |
491 | }\r | |
492 | \r | |
493 | cptr = get_glyph (cptr, gbuf, ','); /* get P field */\r | |
494 | if (gbuf[0]) { /* any? */\r | |
495 | if (parse_addr (gbuf, &val[I_P], (I_GETPP (opfl)?\r | |
496 | I_M_QX: 0))) return SCPE_ARG;\r | |
497 | }\r | |
498 | else if (I_GETPP (opfl) == I_M_PP) return SCPE_ARG;\r | |
499 | \r | |
500 | if (I_GETQP (opfl) != I_M_QNP) { /* Q field allowed? */\r | |
501 | cptr = get_glyph (cptr, gbuf, ','); /* get Q field */\r | |
502 | if (gbuf[0]) { /* any? */\r | |
503 | if (parse_addr (gbuf, &val[I_Q], I_GETQF (opfl)))\r | |
504 | return SCPE_ARG;\r | |
505 | }\r | |
506 | else if (I_GETQP (opfl) == I_M_QP) return SCPE_ARG;\r | |
507 | }\r | |
508 | \r | |
509 | cptr = get_glyph (cptr, fptr = gbuf, ' '); /* get flag field */\r | |
510 | last = -1; /* none yet */\r | |
511 | while (t = *fptr++) { /* loop through */\r | |
512 | if ((t < '0') || (t > '9')) return SCPE_ARG; /* must be digit */\r | |
513 | t = t - '0'; /* convert */\r | |
514 | if (t == 1) { /* ambiguous? */\r | |
515 | la = *fptr++; /* get next */\r | |
516 | if (la == '0') t = 10; /* 10? */\r | |
517 | else if ((la == '1') && (*fptr == 0)) t = 11; /* 11 & end field? */\r | |
518 | else --fptr; /* dont lookahead */\r | |
519 | }\r | |
520 | if (t <= last) return SCPE_ARG; /* in order? */\r | |
521 | val[t] = val[t] | FLAG; /* set flag */\r | |
522 | last = t; /* continue */\r | |
523 | }\r | |
524 | \r | |
525 | if (*cptr != 0) return SCPE_ARG;\r | |
526 | return -(INST_LEN - 1);\r | |
527 | }\r |