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1 | /* nova_tt.c: NOVA console terminal 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 | tti terminal input\r | |
27 | tto terminal output\r | |
28 | \r | |
29 | 04-Jul-07 BKR fixed Dasher CR/LF swap function in 'tti_svc()',\r | |
30 | DEV_SET/CLR macros now used,\r | |
31 | TTO device may now be DISABLED\r | |
32 | 29-Dec-03 RMS Added console backpressure support\r | |
33 | 25-Apr-03 RMS Revised for extended file support\r | |
34 | 05-Jan-02 RMS Fixed calling sequence for setmod\r | |
35 | 03-Oct-02 RMS Added DIBs\r | |
36 | 30-May-02 RMS Widened POS to 32b\r | |
37 | 30-Nov-01 RMS Added extended SET/SHOW support\r | |
38 | 17-Sep-01 RMS Removed multiconsole support\r | |
39 | 07-Sep-01 RMS Moved function prototypes\r | |
40 | 31-May-01 RMS Added multiconsole support\r | |
41 | \r | |
42 | Notes:\r | |
43 | - TTO output is always masked to 7 bits in this rev\r | |
44 | - TTO "Dasher" attribute sends '\b' to console instead of '\031'\r | |
45 | - TTO may be disabled\r | |
46 | - TTI input is always masked to 7 bits in this rev\r | |
47 | - TTI "Dasher" attribute swaps <CR> and <LF>\r | |
48 | - TTI may not be disabled\r | |
49 | */\r | |
50 | \r | |
51 | #include "nova_defs.h"\r | |
52 | \r | |
53 | #define UNIT_V_DASHER (UNIT_V_UF + 0) /* Dasher mode */\r | |
54 | #define UNIT_DASHER (1 << UNIT_V_DASHER)\r | |
55 | \r | |
56 | extern int32 int_req, dev_busy, dev_done, dev_disable;\r | |
57 | \r | |
58 | int32 tti (int32 pulse, int32 code, int32 AC);\r | |
59 | int32 tto (int32 pulse, int32 code, int32 AC);\r | |
60 | t_stat tti_svc (UNIT *uptr);\r | |
61 | t_stat tto_svc (UNIT *uptr);\r | |
62 | t_stat tti_reset (DEVICE *dptr);\r | |
63 | t_stat tto_reset (DEVICE *dptr);\r | |
64 | t_stat ttx_setmod (UNIT *uptr, int32 val, char *cptr, void *desc);\r | |
65 | \r | |
66 | /* TTI data structures\r | |
67 | \r | |
68 | tti_dev TTI device descriptor\r | |
69 | tti_unit TTI unit descriptor\r | |
70 | tti_reg TTI register list\r | |
71 | ttx_mod TTI/TTO modifiers list\r | |
72 | */\r | |
73 | \r | |
74 | DIB tti_dib = { DEV_TTI, INT_TTI, PI_TTI, &tti };\r | |
75 | \r | |
76 | UNIT tti_unit = { UDATA (&tti_svc, 0, 0), KBD_POLL_WAIT };\r | |
77 | \r | |
78 | REG tti_reg[] = {\r | |
79 | { ORDATA (BUF, tti_unit.buf, 8) },\r | |
80 | { FLDATA (BUSY, dev_busy, INT_V_TTI) },\r | |
81 | { FLDATA (DONE, dev_done, INT_V_TTI) },\r | |
82 | { FLDATA (DISABLE, dev_disable, INT_V_TTI) },\r | |
83 | { FLDATA (INT, int_req, INT_V_TTI) },\r | |
84 | { DRDATA (POS, tti_unit.pos, T_ADDR_W), PV_LEFT },\r | |
85 | { DRDATA (TIME, tti_unit.wait, 24), REG_NZ + PV_LEFT },\r | |
86 | { NULL }\r | |
87 | };\r | |
88 | \r | |
89 | MTAB ttx_mod[] = {\r | |
90 | { UNIT_DASHER, 0, "ANSI", "ANSI", &ttx_setmod },\r | |
91 | { UNIT_DASHER, UNIT_DASHER, "Dasher", "DASHER", &ttx_setmod },\r | |
92 | { 0 }\r | |
93 | } ;\r | |
94 | \r | |
95 | DEVICE tti_dev = {\r | |
96 | "TTI", &tti_unit, tti_reg, ttx_mod,\r | |
97 | 1, 10, 31, 1, 8, 8,\r | |
98 | NULL, NULL, &tti_reset,\r | |
99 | NULL, NULL, NULL,\r | |
100 | &tti_dib, 0\r | |
101 | };\r | |
102 | \r | |
103 | /* TTO data structures\r | |
104 | \r | |
105 | tto_dev TTO device descriptor\r | |
106 | tto_unit TTO unit descriptor\r | |
107 | tto_reg TTO register list\r | |
108 | */\r | |
109 | \r | |
110 | DIB tto_dib = { DEV_TTO, INT_TTO, PI_TTO, &tto };\r | |
111 | \r | |
112 | UNIT tto_unit = { UDATA (&tto_svc, 0, 0), SERIAL_OUT_WAIT };\r | |
113 | \r | |
114 | REG tto_reg[] = {\r | |
115 | { ORDATA (BUF, tto_unit.buf, 8) },\r | |
116 | { FLDATA (BUSY, dev_busy, INT_V_TTO) },\r | |
117 | { FLDATA (DONE, dev_done, INT_V_TTO) },\r | |
118 | { FLDATA (DISABLE, dev_disable, INT_V_TTO) },\r | |
119 | { FLDATA (INT, int_req, INT_V_TTO) },\r | |
120 | { DRDATA (POS, tto_unit.pos, T_ADDR_W), PV_LEFT },\r | |
121 | { DRDATA (TIME, tto_unit.wait, 24), PV_LEFT },\r | |
122 | { NULL }\r | |
123 | };\r | |
124 | \r | |
125 | DEVICE tto_dev = {\r | |
126 | "TTO", &tto_unit, tto_reg, ttx_mod,\r | |
127 | 1, 10, 31, 1, 8, 8,\r | |
128 | NULL, NULL, &tto_reset,\r | |
129 | NULL, NULL, NULL,\r | |
130 | &tto_dib, DEV_DISABLE\r | |
131 | };\r | |
132 | \r | |
133 | /* Terminal input: IOT routine */\r | |
134 | \r | |
135 | int32 tti (int32 pulse, int32 code, int32 AC)\r | |
136 | {\r | |
137 | int32 iodata;\r | |
138 | \r | |
139 | \r | |
140 | if (code == ioDIA)\r | |
141 | iodata = tti_unit.buf & 0377;\r | |
142 | else iodata = 0;\r | |
143 | \r | |
144 | switch (pulse)\r | |
145 | { /* decode IR<8:9> */\r | |
146 | case iopS: /* start */\r | |
147 | DEV_SET_BUSY( INT_TTI ) ;\r | |
148 | DEV_CLR_DONE( INT_TTI ) ;\r | |
149 | DEV_UPDATE_INTR ;\r | |
150 | break;\r | |
151 | \r | |
152 | case iopC: /* clear */\r | |
153 | DEV_CLR_BUSY( INT_TTI ) ;\r | |
154 | DEV_CLR_DONE( INT_TTI ) ;\r | |
155 | DEV_UPDATE_INTR ;\r | |
156 | break;\r | |
157 | } /* end switch */\r | |
158 | \r | |
159 | return iodata;\r | |
160 | }\r | |
161 | \r | |
162 | /* Unit service */\r | |
163 | \r | |
164 | t_stat tti_svc (UNIT *uptr)\r | |
165 | {\r | |
166 | int32 temp;\r | |
167 | \r | |
168 | sim_activate (&tti_unit, tti_unit.wait); /* continue poll */\r | |
169 | if ((temp = sim_poll_kbd ()) < SCPE_KFLAG)\r | |
170 | return temp; /* no char or error? */\r | |
171 | tti_unit.buf = temp & 0177;\r | |
172 | if (tti_unit.flags & UNIT_DASHER) {\r | |
173 | if (tti_unit.buf == '\r')\r | |
174 | tti_unit.buf = '\n'; /* Dasher: cr -> nl */\r | |
175 | else if (tti_unit.buf == '\n')\r | |
176 | tti_unit.buf = '\r' ; /* Dasher: nl -> cr */\r | |
177 | }\r | |
178 | DEV_CLR_BUSY( INT_TTI ) ;\r | |
179 | DEV_SET_DONE( INT_TTI ) ;\r | |
180 | DEV_UPDATE_INTR ;\r | |
181 | ++(uptr->pos) ;\r | |
182 | return SCPE_OK;\r | |
183 | }\r | |
184 | \r | |
185 | /* Reset routine */\r | |
186 | \r | |
187 | t_stat tti_reset (DEVICE *dptr)\r | |
188 | {\r | |
189 | tti_unit.buf = 0; /* <not DG compatible> */\r | |
190 | DEV_CLR_BUSY( INT_TTI ) ;\r | |
191 | DEV_CLR_DONE( INT_TTI ) ;\r | |
192 | DEV_UPDATE_INTR ;\r | |
193 | sim_activate (&tti_unit, tti_unit.wait); /* activate unit */\r | |
194 | return SCPE_OK;\r | |
195 | }\r | |
196 | \r | |
197 | /* Terminal output: IOT routine */\r | |
198 | \r | |
199 | int32 tto (int32 pulse, int32 code, int32 AC)\r | |
200 | {\r | |
201 | if (code == ioDOA)\r | |
202 | tto_unit.buf = AC & 0377; \r | |
203 | \r | |
204 | switch (pulse)\r | |
205 | { /* decode IR<8:9> */\r | |
206 | case iopS: /* start */\r | |
207 | DEV_SET_BUSY( INT_TTO ) ;\r | |
208 | DEV_CLR_DONE( INT_TTO ) ;\r | |
209 | DEV_UPDATE_INTR ;\r | |
210 | sim_activate (&tto_unit, tto_unit.wait); /* activate unit */\r | |
211 | break;\r | |
212 | \r | |
213 | case iopC: /* clear */\r | |
214 | DEV_CLR_BUSY( INT_TTO ) ;\r | |
215 | DEV_CLR_DONE( INT_TTO ) ;\r | |
216 | DEV_UPDATE_INTR ;\r | |
217 | sim_cancel (&tto_unit); /* deactivate unit */\r | |
218 | break;\r | |
219 | } /* end switch */\r | |
220 | return 0;\r | |
221 | }\r | |
222 | \r | |
223 | \r | |
224 | /* Unit service */\r | |
225 | \r | |
226 | t_stat tto_svc (UNIT *uptr)\r | |
227 | {\r | |
228 | int32 c;\r | |
229 | t_stat r;\r | |
230 | \r | |
231 | c = tto_unit.buf & 0177;\r | |
232 | if ((tto_unit.flags & UNIT_DASHER) && (c == 031))\r | |
233 | c = '\b';\r | |
234 | if ((r = sim_putchar_s (c)) != SCPE_OK) { /* output; error? */\r | |
235 | sim_activate (uptr, uptr->wait); /* try again */\r | |
236 | return ((r == SCPE_STALL)? SCPE_OK : r); /* !stall? report */\r | |
237 | }\r | |
238 | DEV_CLR_BUSY( INT_TTO ) ;\r | |
239 | DEV_SET_DONE( INT_TTO ) ;\r | |
240 | DEV_UPDATE_INTR ;\r | |
241 | ++(tto_unit.pos);\r | |
242 | return SCPE_OK;\r | |
243 | }\r | |
244 | \r | |
245 | /* Reset routine */\r | |
246 | \r | |
247 | t_stat tto_reset (DEVICE *dptr)\r | |
248 | {\r | |
249 | tto_unit.buf = 0; /* <not DG compatible!> */\r | |
250 | DEV_CLR_BUSY( INT_TTO ) ;\r | |
251 | DEV_CLR_DONE( INT_TTO ) ;\r | |
252 | DEV_UPDATE_INTR ;\r | |
253 | sim_cancel (&tto_unit); /* deactivate unit */\r | |
254 | return SCPE_OK;\r | |
255 | }\r | |
256 | \r | |
257 | t_stat ttx_setmod (UNIT *uptr, int32 val, char *cptr, void *desc)\r | |
258 | {\r | |
259 | tti_unit.flags = (tti_unit.flags & ~UNIT_DASHER) | val;\r | |
260 | tto_unit.flags = (tto_unit.flags & ~UNIT_DASHER) | val;\r | |
261 | return SCPE_OK;\r | |
262 | }\r |