| 1 | /* i1620_tty.c: IBM 1620 typewriter\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 | tty console typewriter\r |
| 27 | \r |
| 28 | 21-Sep-05 RMS Revised translation tables for 7094/1401 compatibility\r |
| 29 | 22-Dec-02 RMS Added break test\r |
| 30 | */\r |
| 31 | \r |
| 32 | #include "i1620_defs.h"\r |
| 33 | \r |
| 34 | #define TTO_COLMAX 80\r |
| 35 | \r |
| 36 | int32 tto_col = 0;\r |
| 37 | \r |
| 38 | extern uint8 M[MAXMEMSIZE];\r |
| 39 | extern uint8 ind[NUM_IND];\r |
| 40 | extern UNIT cpu_unit;\r |
| 41 | extern uint32 io_stop;\r |
| 42 | \r |
| 43 | void tti_unlock (void);\r |
| 44 | t_stat tti_rnum (int8 *c);\r |
| 45 | t_stat tti_ralp (int8 *c);\r |
| 46 | t_stat tti_read (int8 *c);\r |
| 47 | t_stat tto_num (uint32 pa, uint32 len);\r |
| 48 | t_stat tto_write (uint32 c);\r |
| 49 | t_stat tty_svc (UNIT *uptr);\r |
| 50 | t_stat tty_reset (DEVICE *dptr);\r |
| 51 | \r |
| 52 | /* TTY data structures\r |
| 53 | \r |
| 54 | tty_dev TTY device descriptor\r |
| 55 | tty_unit TTY unit descriptor\r |
| 56 | tty_reg TTY register list\r |
| 57 | */\r |
| 58 | \r |
| 59 | UNIT tty_unit = { UDATA (&tty_svc, 0, 0), KBD_POLL_WAIT };\r |
| 60 | \r |
| 61 | REG tty_reg[] = {\r |
| 62 | { DRDATA (COL, tto_col, 7) },\r |
| 63 | { DRDATA (TIME, tty_unit.wait, 24), REG_NZ + PV_LEFT },\r |
| 64 | { NULL }\r |
| 65 | };\r |
| 66 | \r |
| 67 | DEVICE tty_dev = {\r |
| 68 | "TTY", &tty_unit, tty_reg, NULL,\r |
| 69 | 1, 10, 31, 1, 8, 7,\r |
| 70 | NULL, NULL, &tty_reset,\r |
| 71 | NULL, NULL, NULL\r |
| 72 | };\r |
| 73 | \r |
| 74 | /* Data tables */\r |
| 75 | \r |
| 76 | /* Keyboard to numeric */\r |
| 77 | \r |
| 78 | const char *tti_to_num = "0123456789|=@:;}";\r |
| 79 | \r |
| 80 | /* Keyboard to alphameric (digit pair) - translates LC to UC */\r |
| 81 | \r |
| 82 | const int8 tti_to_alp[128] = {\r |
| 83 | -1, -1, -1, -1, -1, -1, -1, -1, /* 00 */\r |
| 84 | -1, -1, -1, -1, -1, -1, -1, -1,\r |
| 85 | -1, -1, -1, -1, -1, -1, -1, -1, /* 10 */\r |
| 86 | -1, -1, -1, -1, -1, -1, -1, -1,\r |
| 87 | 0x00, 0x02, -1, 0x33, 0x13, 0x24, 0x10, 0x34, /* !"#$%&' */\r |
| 88 | 0x24, 0x04, 0x14, 0x10, 0x23, 0x20, 0x03, 0x21, /* ()*+,-./ */\r |
| 89 | 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 01234567 */\r |
| 90 | 0x78, 0x79, -1, -1, -1, 0x33, -1, -1, /* 89:;<=>? */\r |
| 91 | 0x34, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* @ABCDEFG */\r |
| 92 | 0x48, 0x49, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, /* HIJKLMNO */\r |
| 93 | 0x57, 0x58, 0x59, 0x62, 0x63, 0x64, 0x65, 0x66, /* PQRSTUVW */\r |
| 94 | 0x67, 0x68, 0x69, -1, -1, -1, -1, -1, /* XYZ[\]^_ */\r |
| 95 | -1, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* `abcdefg */\r |
| 96 | 0x48, 0x49, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, /* hijklmno */\r |
| 97 | 0x57, 0x58, 0x59, 0x62, 0x63, 0x64, 0x65, 0x66, /* pqrstuvw */\r |
| 98 | 0x67, 0x68, 0x69, -1, -1, 0x0F, -1, -1 /* xyz{|}~ */\r |
| 99 | };\r |
| 100 | \r |
| 101 | /* Numeric (digit) to typewriter */\r |
| 102 | \r |
| 103 | const char num_to_tto[16] = {\r |
| 104 | '0', '1', '2', '3', '4', '5', '6', '7',\r |
| 105 | '8', '9', '|', '=', '@', ':', ';', '}'\r |
| 106 | };\r |
| 107 | \r |
| 108 | /* Alphameric (digit pair) to typewriter */\r |
| 109 | \r |
| 110 | const char alp_to_tto[256] = {\r |
| 111 | ' ', -1, '?', '.', ')', -1, -1, -1, /* 00 */\r |
| 112 | -1, -1, -1, -1, -1, -1, -1, -1,\r |
| 113 | '+', -1, '!', '$', '*', ' ', -1, -1, /* 10 */\r |
| 114 | -1, -1, -1, -1, -1, -1, -1, -1,\r |
| 115 | '-', '/', '|', ',', '(', -1, -1, -1, /* 20 */\r |
| 116 | -1, -1, -1, -1, -1, -1, -1, -1,\r |
| 117 | -1, -1, '0', '=', '@', ':', -1, -1, /* 30 */\r |
| 118 | -1, -1, -1, -1, -1, -1, -1, -1,\r |
| 119 | -1, 'A', 'B', 'C', 'D', 'E', 'F', 'G', /* 40 */\r |
| 120 | 'H', 'I', -1, -1, -1, -1, -1, -1,\r |
| 121 | '-', 'J', 'K', 'L', 'M', 'N', 'O', 'P', /* 50 */\r |
| 122 | 'Q', 'R', -1, -1, -1, -1, -1, -1,\r |
| 123 | -1, '/', 'S', 'T', 'U', 'V', 'W', 'X', /* 60 */\r |
| 124 | 'Y', 'Z', -1, -1, -1, -1, -1, -1,\r |
| 125 | '0', '1', '2', '3', '4', '5', '6', '7', /* 70 */\r |
| 126 | '8', '9', -1, -1, -1, -1, -1, -1,\r |
| 127 | -1, -1, -1, -1, -1, -1, -1, -1, /* 80 */\r |
| 128 | -1, -1, -1, -1, -1, -1, -1, -1,\r |
| 129 | -1, -1, -1, -1, -1, -1, -1, -1, /* 90 */\r |
| 130 | -1, -1, -1, -1, -1, -1, -1, -1,\r |
| 131 | -1, -1, -1, -1, -1, -1, -1, -1, /* A0 */\r |
| 132 | -1, -1, -1, -1, -1, -1, -1, -1,\r |
| 133 | -1, -1, -1, -1, -1, -1, -1, -1, /* B0 */\r |
| 134 | -1, -1, -1, -1, -1, -1, -1, -1,\r |
| 135 | -1, -1, -1, -1, -1, -1, -1, -1, /* C0 */\r |
| 136 | -1, -1, -1, -1, -1, -1, -1, -1,\r |
| 137 | -1, -1, -1, -1, -1, -1, -1, -1, /* D0 */\r |
| 138 | -1, -1, -1, -1, -1, -1, -1, -1,\r |
| 139 | -1, -1, -1, -1, -1, -1, -1, -1, /* E0 */\r |
| 140 | -1, -1, -1, -1, -1, -1, -1, -1,\r |
| 141 | -1, -1, -1, -1, -1, -1, -1, -1, /* F0 */\r |
| 142 | -1, -1, -1, -1, -1, -1, -1, -1\r |
| 143 | };\r |
| 144 | \r |
| 145 | /* Terminal IO\r |
| 146 | \r |
| 147 | - On input, parity errors cannot occur.\r |
| 148 | - On input, release-start does NOT cause a record mark to be stored.\r |
| 149 | - On output, invalid characters type an invalid character and set WRCHK.\r |
| 150 | If IO stop is set, the system halts at the end of the operation.\r |
| 151 | */\r |
| 152 | \r |
| 153 | t_stat tty (uint32 op, uint32 pa, uint32 f0, uint32 f1)\r |
| 154 | {\r |
| 155 | t_addr i;\r |
| 156 | uint8 d;\r |
| 157 | int8 ttc;\r |
| 158 | t_stat r, sta;\r |
| 159 | \r |
| 160 | sta = SCPE_OK;\r |
| 161 | switch (op) { /* case on op */\r |
| 162 | \r |
| 163 | case OP_K: /* control */\r |
| 164 | switch (f1) { /* case on control */\r |
| 165 | case 1: /* space */\r |
| 166 | tto_write (' ');\r |
| 167 | break;\r |
| 168 | case 2: /* return */\r |
| 169 | tto_write ('\r');\r |
| 170 | break;\r |
| 171 | case 3: /* backspace */\r |
| 172 | if ((cpu_unit.flags & IF_MII) == 0) return STOP_INVFNC;\r |
| 173 | tto_write ('\b');\r |
| 174 | break;\r |
| 175 | case 4: /* index */\r |
| 176 | if ((cpu_unit.flags & IF_MII) == 0) return STOP_INVFNC;\r |
| 177 | tto_write ('\n');\r |
| 178 | break;\r |
| 179 | case 8: /* tab */\r |
| 180 | tto_write ('\t');\r |
| 181 | break;\r |
| 182 | default:\r |
| 183 | return STOP_INVFNC;\r |
| 184 | }\r |
| 185 | return SCPE_OK;\r |
| 186 | \r |
| 187 | case OP_RN: /* read numeric */\r |
| 188 | tti_unlock (); /* unlock keyboard */\r |
| 189 | for (i = 0; i < MEMSIZE; i++) { /* (stop runaway) */\r |
| 190 | r = tti_rnum (&ttc); /* read char */\r |
| 191 | if (r != SCPE_OK) return r; /* error? */\r |
| 192 | if (ttc == 0x7F) return SCPE_OK; /* end record? */\r |
| 193 | M[pa] = ttc & (FLAG | DIGIT); /* store char */\r |
| 194 | PP (pa); /* incr mem addr */\r |
| 195 | }\r |
| 196 | break;\r |
| 197 | \r |
| 198 | case OP_RA: /* read alphameric */\r |
| 199 | tti_unlock ();\r |
| 200 | for (i = 0; i < MEMSIZE; i = i + 2) { /* (stop runaway) */\r |
| 201 | r = tti_ralp (&ttc); /* read char */\r |
| 202 | if (r != SCPE_OK) return r; /* error? */\r |
| 203 | if (ttc == 0x7F) return SCPE_OK; /* end record? */\r |
| 204 | M[pa] = (M[pa] & FLAG) | (ttc & DIGIT); /* store 2 digits */\r |
| 205 | M[pa - 1] = (M[pa - 1] & FLAG) | ((ttc >> 4) & DIGIT);\r |
| 206 | pa = ADDR_A (pa, 2); /* incr mem addr */\r |
| 207 | }\r |
| 208 | break; \r |
| 209 | \r |
| 210 | case OP_DN:\r |
| 211 | return tto_num (pa, 20000 - (pa % 20000)); /* dump numeric */\r |
| 212 | \r |
| 213 | case OP_WN:\r |
| 214 | return tto_num (pa, 0); /* type numeric */\r |
| 215 | \r |
| 216 | case OP_WA:\r |
| 217 | for (i = 0; i < MEMSIZE; i = i + 2) { /* stop runaway */\r |
| 218 | d = M[pa] & DIGIT; /* get digit */\r |
| 219 | if ((d & 0xA) == REC_MARK) return sta; /* 8-2 char? done */\r |
| 220 | d = ((M[pa - 1] & DIGIT) << 4) | d; /* get digit pair */\r |
| 221 | ttc = alp_to_tto[d]; /* translate */\r |
| 222 | if (ttc < 0) { /* bad char? */\r |
| 223 | ind[IN_WRCHK] = 1; /* set write check */\r |
| 224 | if (io_stop) sta = STOP_INVCHR; /* set return status */\r |
| 225 | }\r |
| 226 | tto_write (ttc & 0x7F); /* write */\r |
| 227 | pa = ADDR_A (pa, 2); /* incr mem addr */\r |
| 228 | }\r |
| 229 | break; \r |
| 230 | \r |
| 231 | default: /* invalid function */\r |
| 232 | return STOP_INVFNC;\r |
| 233 | }\r |
| 234 | \r |
| 235 | return STOP_RWRAP;\r |
| 236 | }\r |
| 237 | \r |
| 238 | /* Read numerically - cannot generate parity errors */\r |
| 239 | \r |
| 240 | t_stat tti_rnum (int8 *c)\r |
| 241 | {\r |
| 242 | int8 raw, flg = 0;\r |
| 243 | char *cp;\r |
| 244 | t_stat r;\r |
| 245 | \r |
| 246 | *c = -1; /* no char yet */\r |
| 247 | do {\r |
| 248 | r = tti_read (&raw); /* get char */\r |
| 249 | if (r != SCPE_OK) return r; /* error? */\r |
| 250 | if (raw == '\r') *c = 0x7F; /* return? mark */\r |
| 251 | else if ((raw == '~') || (raw == '`')) flg = FLAG; /* flag? mark */\r |
| 252 | else if (cp = strchr (tti_to_num, raw)) /* legal? */\r |
| 253 | *c = ((int8) (cp - tti_to_num)) | flg; /* assemble char */\r |
| 254 | else raw = 007; /* beep! */\r |
| 255 | tto_write (raw); /* echo */\r |
| 256 | } while (*c == -1);\r |
| 257 | return SCPE_OK;\r |
| 258 | }\r |
| 259 | \r |
| 260 | /* Read alphamerically - cannot generate parity errors */\r |
| 261 | \r |
| 262 | t_stat tti_ralp (int8 *c)\r |
| 263 | {\r |
| 264 | int8 raw;\r |
| 265 | t_stat r;\r |
| 266 | \r |
| 267 | *c = -1; /* no char yet */\r |
| 268 | do {\r |
| 269 | r = tti_read (&raw); /* get char */\r |
| 270 | if (r != SCPE_OK) return r; /* error? */\r |
| 271 | if (raw == '\r') *c = 0x7F; /* return? mark */\r |
| 272 | else if (tti_to_alp[raw] >= 0) /* legal char? */\r |
| 273 | *c = tti_to_alp[raw]; /* xlate */\r |
| 274 | else raw = 007; /* beep! */\r |
| 275 | tto_write (raw); /* echo */\r |
| 276 | } while (*c == -1);\r |
| 277 | return SCPE_OK;\r |
| 278 | }\r |
| 279 | \r |
| 280 | /* Read from keyboard */\r |
| 281 | \r |
| 282 | t_stat tti_read (int8 *c)\r |
| 283 | {\r |
| 284 | int32 t;\r |
| 285 | \r |
| 286 | do {\r |
| 287 | t = sim_poll_kbd (); /* get character */\r |
| 288 | } while ((t == SCPE_OK) || (t & SCPE_BREAK)); /* ignore break */\r |
| 289 | if (t < SCPE_KFLAG) return t; /* error? */\r |
| 290 | *c = t & 0177; /* store character */\r |
| 291 | return SCPE_OK;\r |
| 292 | }\r |
| 293 | \r |
| 294 | /* Write numerically - cannot generate parity errors */\r |
| 295 | \r |
| 296 | t_stat tto_num (uint32 pa, uint32 len)\r |
| 297 | {\r |
| 298 | t_stat r;\r |
| 299 | uint8 d;\r |
| 300 | uint32 i, end;\r |
| 301 | \r |
| 302 | end = pa + len;\r |
| 303 | for (i = 0; i < MEMSIZE; i++) { /* (stop runaway) */\r |
| 304 | d = M[pa]; /* get char */\r |
| 305 | if (len? (pa >= end): /* dump: end reached? */\r |
| 306 | ((d & REC_MARK) == REC_MARK)) /* write: rec mark? */\r |
| 307 | return SCPE_OK; /* end operation */\r |
| 308 | if (d & FLAG) tto_write ('`'); /* flag? */\r |
| 309 | r = tto_write (num_to_tto[d & DIGIT]); /* write */\r |
| 310 | if (r != SCPE_OK) return r; /* error? */\r |
| 311 | PP (pa); /* incr mem addr */\r |
| 312 | }\r |
| 313 | return STOP_RWRAP;\r |
| 314 | }\r |
| 315 | \r |
| 316 | /* Write, maintaining position */\r |
| 317 | \r |
| 318 | t_stat tto_write (uint32 c)\r |
| 319 | {\r |
| 320 | int32 rpt;\r |
| 321 | \r |
| 322 | if (c == '\t') { /* tab? */\r |
| 323 | rpt = 8 - (tto_col % 8); /* distance to next */\r |
| 324 | tto_col = tto_col + rpt; /* tab over */\r |
| 325 | while (rpt-- > 0) sim_putchar (' '); /* use spaces */\r |
| 326 | return SCPE_OK;\r |
| 327 | }\r |
| 328 | if (c == '\r') { /* return? */\r |
| 329 | sim_putchar ('\r'); /* crlf */\r |
| 330 | sim_putchar ('\n');\r |
| 331 | tto_col = 0; /* clear colcnt */\r |
| 332 | return SCPE_OK;\r |
| 333 | }\r |
| 334 | if ((c == '\n') || (c == 007)) { /* non-spacing? */\r |
| 335 | sim_putchar (c);\r |
| 336 | return SCPE_OK;\r |
| 337 | }\r |
| 338 | if (c == '\b') tto_col = tto_col? tto_col - 1: 0; /* backspace? */\r |
| 339 | else tto_col++; /* normal */\r |
| 340 | if (tto_col > TTO_COLMAX) { /* line wrap? */\r |
| 341 | sim_putchar ('\r');\r |
| 342 | sim_putchar ('\n');\r |
| 343 | tto_col = 0;\r |
| 344 | }\r |
| 345 | sim_putchar (c);\r |
| 346 | return SCPE_OK;\r |
| 347 | }\r |
| 348 | \r |
| 349 | /* Unit service - polls for WRU */\r |
| 350 | \r |
| 351 | t_stat tty_svc (UNIT *uptr)\r |
| 352 | {\r |
| 353 | int32 temp;\r |
| 354 | \r |
| 355 | sim_activate (&tty_unit, tty_unit.wait); /* continue poll */\r |
| 356 | if ((temp = sim_poll_kbd ()) < SCPE_KFLAG) return temp; /* no char or error? */\r |
| 357 | return SCPE_OK;\r |
| 358 | }\r |
| 359 | \r |
| 360 | /* Reset routine */\r |
| 361 | \r |
| 362 | t_stat tty_reset (DEVICE *dptr)\r |
| 363 | {\r |
| 364 | sim_activate (&tty_unit, tty_unit.wait); /* activate poll */\r |
| 365 | tto_col = 0;\r |
| 366 | return SCPE_OK;\r |
| 367 | }\r |
| 368 | \r |
| 369 | /* TTI unlock - signals that we are ready for keyboard input */\r |
| 370 | \r |
| 371 | void tti_unlock (void)\r |
| 372 | {\r |
| 373 | tto_write ('>');\r |
| 374 | return;\r |
| 375 | }\r |