| 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 |