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196ba1fc PH |
1 | /* pdp8_tt.c: PDP-8 console terminal simulator\r |
2 | \r | |
3 | Copyright (c) 1993-2007, 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,tto KL8E terminal input/output\r | |
27 | \r | |
28 | 18-Jun-07 RMS Added UNIT_IDLE flag to console input\r | |
29 | 18-Oct-06 RMS Synced keyboard to clock\r | |
30 | 30-Sep-06 RMS Fixed handling of non-printable characters in KSR mode\r | |
31 | 22-Nov-05 RMS Revised for new terminal processing routines\r | |
32 | 28-May-04 RMS Removed SET TTI CTRL-C\r | |
33 | 29-Dec-03 RMS Added console output backpressure support\r | |
34 | 25-Apr-03 RMS Revised for extended file support\r | |
35 | 02-Mar-02 RMS Added SET TTI CTRL-C\r | |
36 | 22-Dec-02 RMS Added break support\r | |
37 | 01-Nov-02 RMS Added 7B/8B support\r | |
38 | 04-Oct-02 RMS Added DIBs, device number support\r | |
39 | 30-May-02 RMS Widened POS to 32b\r | |
40 | 07-Sep-01 RMS Moved function prototypes\r | |
41 | */\r | |
42 | \r | |
43 | #include "pdp8_defs.h"\r | |
44 | #include <ctype.h>\r | |
45 | \r | |
46 | extern int32 int_req, int_enable, dev_done, stop_inst;\r | |
47 | extern int32 tmxr_poll;\r | |
48 | \r | |
49 | int32 tti (int32 IR, int32 AC);\r | |
50 | int32 tto (int32 IR, int32 AC);\r | |
51 | t_stat tti_svc (UNIT *uptr);\r | |
52 | t_stat tto_svc (UNIT *uptr);\r | |
53 | t_stat tti_reset (DEVICE *dptr);\r | |
54 | t_stat tto_reset (DEVICE *dptr);\r | |
55 | t_stat tty_set_mode (UNIT *uptr, int32 val, char *cptr, void *desc);\r | |
56 | \r | |
57 | /* TTI data structures\r | |
58 | \r | |
59 | tti_dev TTI device descriptor\r | |
60 | tti_unit TTI unit descriptor\r | |
61 | tti_reg TTI register list\r | |
62 | tti_mod TTI modifiers list\r | |
63 | */\r | |
64 | \r | |
65 | DIB tti_dib = { DEV_TTI, 1, { &tti } };\r | |
66 | \r | |
67 | UNIT tti_unit = { UDATA (&tti_svc, UNIT_IDLE|TT_MODE_KSR, 0), 0 };\r | |
68 | \r | |
69 | REG tti_reg[] = {\r | |
70 | { ORDATA (BUF, tti_unit.buf, 8) },\r | |
71 | { FLDATA (DONE, dev_done, INT_V_TTI) },\r | |
72 | { FLDATA (ENABLE, int_enable, INT_V_TTI) },\r | |
73 | { FLDATA (INT, int_req, INT_V_TTI) },\r | |
74 | { DRDATA (POS, tti_unit.pos, T_ADDR_W), PV_LEFT },\r | |
75 | { DRDATA (TIME, tti_unit.wait, 24), PV_LEFT },\r | |
76 | { NULL }\r | |
77 | };\r | |
78 | \r | |
79 | MTAB tti_mod[] = {\r | |
80 | { TT_MODE, TT_MODE_KSR, "KSR", "KSR", &tty_set_mode },\r | |
81 | { TT_MODE, TT_MODE_7B, "7b", "7B", &tty_set_mode },\r | |
82 | { TT_MODE, TT_MODE_8B, "8b", "8B", &tty_set_mode },\r | |
83 | { TT_MODE, TT_MODE_7P, "7b", NULL, NULL },\r | |
84 | { MTAB_XTD|MTAB_VDV, 0, "DEVNO", NULL, NULL, &show_dev, NULL },\r | |
85 | { 0 }\r | |
86 | };\r | |
87 | \r | |
88 | DEVICE tti_dev = {\r | |
89 | "TTI", &tti_unit, tti_reg, tti_mod,\r | |
90 | 1, 10, 31, 1, 8, 8,\r | |
91 | NULL, NULL, &tti_reset,\r | |
92 | NULL, NULL, NULL,\r | |
93 | &tti_dib, 0\r | |
94 | };\r | |
95 | \r | |
96 | /* TTO data structures\r | |
97 | \r | |
98 | tto_dev TTO device descriptor\r | |
99 | tto_unit TTO unit descriptor\r | |
100 | tto_reg TTO register list\r | |
101 | */\r | |
102 | \r | |
103 | DIB tto_dib = { DEV_TTO, 1, { &tto } };\r | |
104 | \r | |
105 | UNIT tto_unit = { UDATA (&tto_svc, TT_MODE_KSR, 0), SERIAL_OUT_WAIT };\r | |
106 | \r | |
107 | REG tto_reg[] = {\r | |
108 | { ORDATA (BUF, tto_unit.buf, 8) },\r | |
109 | { FLDATA (DONE, dev_done, INT_V_TTO) },\r | |
110 | { FLDATA (ENABLE, int_enable, INT_V_TTO) },\r | |
111 | { FLDATA (INT, int_req, INT_V_TTO) },\r | |
112 | { DRDATA (POS, tto_unit.pos, T_ADDR_W), PV_LEFT },\r | |
113 | { DRDATA (TIME, tto_unit.wait, 24), PV_LEFT },\r | |
114 | { NULL }\r | |
115 | };\r | |
116 | \r | |
117 | MTAB tto_mod[] = {\r | |
118 | { TT_MODE, TT_MODE_KSR, "KSR", "KSR", &tty_set_mode },\r | |
119 | { TT_MODE, TT_MODE_7B, "7b", "7B", &tty_set_mode },\r | |
120 | { TT_MODE, TT_MODE_8B, "8b", "8B", &tty_set_mode },\r | |
121 | { TT_MODE, TT_MODE_7P, "7p", "7P", &tty_set_mode },\r | |
122 | { MTAB_XTD|MTAB_VDV, 0, "DEVNO", NULL, NULL, &show_dev },\r | |
123 | { 0 }\r | |
124 | };\r | |
125 | \r | |
126 | DEVICE tto_dev = {\r | |
127 | "TTO", &tto_unit, tto_reg, tto_mod,\r | |
128 | 1, 10, 31, 1, 8, 8,\r | |
129 | NULL, NULL, &tto_reset, \r | |
130 | NULL, NULL, NULL,\r | |
131 | &tto_dib, 0\r | |
132 | };\r | |
133 | \r | |
134 | /* Terminal input: IOT routine */\r | |
135 | \r | |
136 | int32 tti (int32 IR, int32 AC)\r | |
137 | {\r | |
138 | switch (IR & 07) { /* decode IR<9:11> */\r | |
139 | case 0: /* KCF */\r | |
140 | dev_done = dev_done & ~INT_TTI; /* clear flag */\r | |
141 | int_req = int_req & ~INT_TTI;\r | |
142 | return AC;\r | |
143 | \r | |
144 | case 1: /* KSF */\r | |
145 | return (dev_done & INT_TTI)? IOT_SKP + AC: AC;\r | |
146 | \r | |
147 | case 2: /* KCC */\r | |
148 | dev_done = dev_done & ~INT_TTI; /* clear flag */\r | |
149 | int_req = int_req & ~INT_TTI;\r | |
150 | return 0; /* clear AC */\r | |
151 | \r | |
152 | case 4: /* KRS */\r | |
153 | return (AC | tti_unit.buf); /* return buffer */\r | |
154 | \r | |
155 | case 5: /* KIE */\r | |
156 | if (AC & 1) int_enable = int_enable | (INT_TTI+INT_TTO);\r | |
157 | else int_enable = int_enable & ~(INT_TTI+INT_TTO);\r | |
158 | int_req = INT_UPDATE; /* update interrupts */\r | |
159 | return AC;\r | |
160 | \r | |
161 | case 6: /* KRB */\r | |
162 | dev_done = dev_done & ~INT_TTI; /* clear flag */\r | |
163 | int_req = int_req & ~INT_TTI;\r | |
164 | return (tti_unit.buf); /* return buffer */\r | |
165 | \r | |
166 | default:\r | |
167 | return (stop_inst << IOT_V_REASON) + AC;\r | |
168 | } /* end switch */\r | |
169 | }\r | |
170 | \r | |
171 | /* Unit service */\r | |
172 | \r | |
173 | t_stat tti_svc (UNIT *uptr)\r | |
174 | {\r | |
175 | int32 c;\r | |
176 | \r | |
177 | sim_activate (uptr, KBD_WAIT (uptr->wait, tmxr_poll)); /* continue poll */\r | |
178 | if ((c = sim_poll_kbd ()) < SCPE_KFLAG) return c; /* no char or error? */\r | |
179 | if (c & SCPE_BREAK) uptr->buf = 0; /* break? */\r | |
180 | else uptr->buf = sim_tt_inpcvt (c, TT_GET_MODE (uptr->flags) | TTUF_KSR);\r | |
181 | uptr->pos = uptr->pos + 1;\r | |
182 | dev_done = dev_done | INT_TTI; /* set done */\r | |
183 | int_req = INT_UPDATE; /* update interrupts */\r | |
184 | return SCPE_OK;\r | |
185 | }\r | |
186 | \r | |
187 | /* Reset routine */\r | |
188 | \r | |
189 | t_stat tti_reset (DEVICE *dptr)\r | |
190 | {\r | |
191 | tti_unit.buf = 0;\r | |
192 | dev_done = dev_done & ~INT_TTI; /* clear done, int */\r | |
193 | int_req = int_req & ~INT_TTI;\r | |
194 | int_enable = int_enable | INT_TTI; /* set enable */\r | |
195 | sim_activate_abs (&tti_unit, KBD_WAIT (tti_unit.wait, tmxr_poll));\r | |
196 | return SCPE_OK;\r | |
197 | }\r | |
198 | \r | |
199 | /* Terminal output: IOT routine */\r | |
200 | \r | |
201 | int32 tto (int32 IR, int32 AC)\r | |
202 | {\r | |
203 | switch (IR & 07) { /* decode IR<9:11> */\r | |
204 | \r | |
205 | case 0: /* TLF */\r | |
206 | dev_done = dev_done | INT_TTO; /* set flag */\r | |
207 | int_req = INT_UPDATE; /* update interrupts */\r | |
208 | return AC;\r | |
209 | \r | |
210 | case 1: /* TSF */\r | |
211 | return (dev_done & INT_TTO)? IOT_SKP + AC: AC;\r | |
212 | \r | |
213 | case 2: /* TCF */\r | |
214 | dev_done = dev_done & ~INT_TTO; /* clear flag */\r | |
215 | int_req = int_req & ~INT_TTO; /* clear int req */\r | |
216 | return AC;\r | |
217 | \r | |
218 | case 5: /* SPI */\r | |
219 | return (int_req & (INT_TTI+INT_TTO))? IOT_SKP + AC: AC;\r | |
220 | \r | |
221 | case 6: /* TLS */\r | |
222 | dev_done = dev_done & ~INT_TTO; /* clear flag */\r | |
223 | int_req = int_req & ~INT_TTO; /* clear int req */\r | |
224 | case 4: /* TPC */\r | |
225 | sim_activate (&tto_unit, tto_unit.wait); /* activate unit */\r | |
226 | tto_unit.buf = AC; /* load buffer */\r | |
227 | return AC;\r | |
228 | \r | |
229 | default:\r | |
230 | return (stop_inst << IOT_V_REASON) + AC;\r | |
231 | } /* end switch */\r | |
232 | }\r | |
233 | \r | |
234 | /* Unit service */\r | |
235 | \r | |
236 | t_stat tto_svc (UNIT *uptr)\r | |
237 | {\r | |
238 | int32 c;\r | |
239 | t_stat r;\r | |
240 | \r | |
241 | c = sim_tt_outcvt (uptr->buf, TT_GET_MODE (uptr->flags) | TTUF_KSR);\r | |
242 | if (c >= 0) {\r | |
243 | if ((r = sim_putchar_s (c)) != SCPE_OK) { /* output char; error? */\r | |
244 | sim_activate (uptr, uptr->wait); /* try again */\r | |
245 | return ((r == SCPE_STALL)? SCPE_OK: r); /* if !stall, report */\r | |
246 | }\r | |
247 | }\r | |
248 | dev_done = dev_done | INT_TTO; /* set done */\r | |
249 | int_req = INT_UPDATE; /* update interrupts */\r | |
250 | uptr->pos = uptr->pos + 1;\r | |
251 | return SCPE_OK;\r | |
252 | }\r | |
253 | \r | |
254 | /* Reset routine */\r | |
255 | \r | |
256 | t_stat tto_reset (DEVICE *dptr)\r | |
257 | {\r | |
258 | tto_unit.buf = 0;\r | |
259 | dev_done = dev_done & ~INT_TTO; /* clear done, int */\r | |
260 | int_req = int_req & ~INT_TTO;\r | |
261 | int_enable = int_enable | INT_TTO; /* set enable */\r | |
262 | sim_cancel (&tto_unit); /* deactivate unit */\r | |
263 | return SCPE_OK;\r | |
264 | }\r | |
265 | \r | |
266 | t_stat tty_set_mode (UNIT *uptr, int32 val, char *cptr, void *desc)\r | |
267 | {\r | |
268 | tti_unit.flags = (tti_unit.flags & ~TT_MODE) | val;\r | |
269 | tto_unit.flags = (tto_unit.flags & ~TT_MODE) | val;\r | |
270 | return SCPE_OK;\r | |
271 | }\r |