| 1 | /* h316_stddev.c: Honeywell 316/516 standard devices\r |
| 2 | \r |
| 3 | Copyright (c) 1999-2007, 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 | ptr 316/516-50 paper tape reader\r |
| 27 | ptp 316/516-52 paper tape punch\r |
| 28 | tty 316/516-33 teleprinter\r |
| 29 | clk/options 316/516-12 real time clocks/internal options\r |
| 30 | \r |
| 31 | 09-Jun-07 RMS Fixed bug in clock increment (found by Theo Engel)\r |
| 32 | 30-Sep-06 RMS Fixed handling of non-printable characters in KSR mode\r |
| 33 | 03-Apr-06 RMS Fixed bugs in punch state handling (from Theo Engel)\r |
| 34 | 22-Nov-05 RMS Revised for new terminal processing routines\r |
| 35 | 05-Feb-05 RMS Fixed bug in OCP '0001 (found by Philipp Hachtmann)\r |
| 36 | 31-Jan-05 RMS Fixed bug in TTY print (found by Philipp Hachtmann)\r |
| 37 | 01-Dec-04 RMS Fixed problem in SKS '104 (reported by Philipp Hachtmann)\r |
| 38 | Fixed bug in SKS '504\r |
| 39 | Added PTR detach routine, stops motion\r |
| 40 | Added PTR/PTP ASCII file support\r |
| 41 | Added TTR/TTP support\r |
| 42 | 24-Oct-03 RMS Added DMA/DMC support\r |
| 43 | 25-Apr-03 RMS Revised for extended file support\r |
| 44 | 01-Mar-03 RMS Added SET/SHOW CLK FREQ support\r |
| 45 | 22-Dec-02 RMS Added break support\r |
| 46 | 01-Nov-02 RMS Added 7b/8b support to terminal\r |
| 47 | 30-May-02 RMS Widened POS to 32b\r |
| 48 | 03-Nov-01 RMS Implemented upper case for console output\r |
| 49 | 29-Nov-01 RMS Added read only unit support\r |
| 50 | 07-Sep-01 RMS Moved function prototypes\r |
| 51 | \r |
| 52 | The ASR-33/35 reader/punch logic, and the ASCII file support for all paper tape\r |
| 53 | devices, logic is taken, with grateful thanks, from Adrian Wise's H316 emulator.\r |
| 54 | \r |
| 55 | Teletype reader transitions:\r |
| 56 | \r |
| 57 | - SET TTY2 START puts the reader in RUN\r |
| 58 | - XOFF from keyboard/reader stops the reader after 1-2 more characters are read\r |
| 59 | - XON from program starts the reader\r |
| 60 | - Detach, SET TTY2 STOP, or end of file stops the reader\r |
| 61 | \r |
| 62 | Teletype punch transitions:\r |
| 63 | \r |
| 64 | - SET TTY3 START puts the punch in RUN\r |
| 65 | - XOFF from program stops the punch after 1 more character is punched\r |
| 66 | - TAPE from program starts the punch after 1 character delay\r |
| 67 | - Detach or SET TTY3 STOP stops the punch\r |
| 68 | */\r |
| 69 | \r |
| 70 | #include "h316_defs.h"\r |
| 71 | #include <ctype.h>\r |
| 72 | \r |
| 73 | #define UNIT_V_ASC (TTUF_V_UF + 0) /* ASCII */\r |
| 74 | #define UNIT_V_UASC (TTUF_V_UF + 1) /* Unix ASCII */\r |
| 75 | #define UNIT_ASC (1 << UNIT_V_ASC)\r |
| 76 | #define UNIT_UASC (1 << UNIT_V_UASC)\r |
| 77 | #define STA u3 /* state bits */\r |
| 78 | #define LF_PEND 01 /* lf pending */\r |
| 79 | #define RUNNING 02 /* tape running */\r |
| 80 | \r |
| 81 | #define XON 0021\r |
| 82 | #define TAPE 0022\r |
| 83 | #define XOFF 0023\r |
| 84 | #define RUBOUT 0377\r |
| 85 | \r |
| 86 | extern uint16 M[];\r |
| 87 | extern int32 PC;\r |
| 88 | extern int32 stop_inst;\r |
| 89 | extern int32 C, dp, ext, extoff_pending, sc;\r |
| 90 | extern int32 dev_int, dev_enb;\r |
| 91 | extern int32 sim_switches;\r |
| 92 | extern UNIT cpu_unit;\r |
| 93 | \r |
| 94 | uint32 ptr_motion = 0; /* read motion */\r |
| 95 | uint32 ptr_stopioe = 0; /* stop on error */\r |
| 96 | uint32 ptp_stopioe = 0;\r |
| 97 | uint32 ptp_power = 0; /* punch power, time */\r |
| 98 | int32 ptp_ptime;\r |
| 99 | uint32 ttr_stopioe = 0;\r |
| 100 | uint32 tty_mode = 0; /* input (0), output (1) */\r |
| 101 | uint32 tty_buf = 0; /* tty buffer */\r |
| 102 | uint32 ttr_xoff_read = 0;\r |
| 103 | uint32 ttp_tape_rcvd = 0;\r |
| 104 | uint32 ttp_xoff_rcvd = 0;\r |
| 105 | int32 clk_tps = 60; /* ticks per second */\r |
| 106 | \r |
| 107 | int32 ptrio (int32 inst, int32 fnc, int32 dat, int32 dev);\r |
| 108 | t_stat ptr_svc (UNIT *uptr);\r |
| 109 | t_stat ptr_reset (DEVICE *dptr);\r |
| 110 | t_stat ptr_boot (int32 unitno, DEVICE *dptr);\r |
| 111 | int32 ptpio (int32 inst, int32 fnc, int32 dat, int32 dev);\r |
| 112 | t_stat ptp_svc (UNIT *uptr);\r |
| 113 | t_stat ptp_reset (DEVICE *dptr);\r |
| 114 | int32 ttyio (int32 inst, int32 fnc, int32 dat, int32 dev);\r |
| 115 | t_stat tti_svc (UNIT *uptr);\r |
| 116 | t_stat tto_svc (UNIT *uptr);\r |
| 117 | t_stat tty_reset (DEVICE *dptr);\r |
| 118 | t_stat ttio_set_mode (UNIT *uptr, int32 val, char *cptr, void *desc);\r |
| 119 | t_stat ttrp_set_mode (UNIT *uptr, int32 val, char *cptr, void *desc);\r |
| 120 | t_stat ttrp_set_start_stop (UNIT *uptr, int32 val, char *cptr, void *desc);\r |
| 121 | int32 clkio (int32 inst, int32 fnc, int32 dat, int32 dev);\r |
| 122 | t_stat clk_svc (UNIT *uptr);\r |
| 123 | t_stat clk_reset (DEVICE *dptr);\r |
| 124 | t_stat clk_set_freq (UNIT *uptr, int32 val, char *cptr, void *desc);\r |
| 125 | t_stat clk_show_freq (FILE *st, UNIT *uptr, int32 val, void *desc);\r |
| 126 | t_stat pt_attach (UNIT *uptr, char *cptr);\r |
| 127 | t_stat pt_detach (UNIT *uptr);\r |
| 128 | t_stat tto_write (int32 c);\r |
| 129 | t_stat ttp_write (int32 c);\r |
| 130 | \r |
| 131 | /* PTR data structures\r |
| 132 | \r |
| 133 | ptr_dev PTR device descriptor\r |
| 134 | ptr_unit PTR unit descriptor\r |
| 135 | ptr_mod PTR modifiers\r |
| 136 | ptr_reg PTR register list\r |
| 137 | */\r |
| 138 | \r |
| 139 | DIB ptr_dib = { PTR, IOBUS, 1, &ptrio };\r |
| 140 | \r |
| 141 | UNIT ptr_unit = {\r |
| 142 | UDATA (&ptr_svc, UNIT_SEQ+UNIT_ATTABLE+UNIT_ROABLE, 0),\r |
| 143 | SERIAL_IN_WAIT\r |
| 144 | };\r |
| 145 | \r |
| 146 | REG ptr_reg[] = {\r |
| 147 | { ORDATA (BUF, ptr_unit.buf, 8) },\r |
| 148 | { FLDATA (READY, dev_int, INT_V_PTR) },\r |
| 149 | { FLDATA (ENABLE, dev_enb, INT_V_PTR) },\r |
| 150 | { FLDATA (MOTION, ptr_motion, 0) },\r |
| 151 | { DRDATA (POS, ptr_unit.pos, T_ADDR_W), PV_LEFT },\r |
| 152 | { DRDATA (TIME, ptr_unit.wait, 24), PV_LEFT },\r |
| 153 | { ORDATA (RSTATE, ptr_unit.STA, 2), REG_HIDDEN },\r |
| 154 | { FLDATA (STOP_IOE, ptr_stopioe, 0) },\r |
| 155 | { NULL }\r |
| 156 | };\r |
| 157 | \r |
| 158 | MTAB pt_mod[] = {\r |
| 159 | { UNIT_ATT+UNIT_ASC+UNIT_UASC, UNIT_ATT+UNIT_ASC, "ASCII", NULL },\r |
| 160 | { UNIT_ATT+UNIT_ASC+UNIT_UASC, UNIT_ATT+UNIT_ASC+UNIT_UASC, "Unix ASCII", NULL },\r |
| 161 | { 0 }\r |
| 162 | };\r |
| 163 | \r |
| 164 | DEVICE ptr_dev = {\r |
| 165 | "PTR", &ptr_unit, ptr_reg, pt_mod,\r |
| 166 | 1, 10, 31, 1, 8, 8,\r |
| 167 | NULL, NULL, &ptr_reset,\r |
| 168 | &ptr_boot, &pt_attach, &pt_detach,\r |
| 169 | &ptr_dib, 0\r |
| 170 | };\r |
| 171 | \r |
| 172 | /* PTP data structures\r |
| 173 | \r |
| 174 | ptp_dev PTP device descriptor\r |
| 175 | ptp_unit PTP unit descriptor\r |
| 176 | ptp_mod PTP modifiers\r |
| 177 | ptp_reg PTP register list\r |
| 178 | */\r |
| 179 | \r |
| 180 | DIB ptp_dib = { PTP, IOBUS, 1, &ptpio };\r |
| 181 | \r |
| 182 | UNIT ptp_unit = {\r |
| 183 | UDATA (&ptp_svc, UNIT_SEQ+UNIT_ATTABLE, 0), SERIAL_OUT_WAIT\r |
| 184 | };\r |
| 185 | \r |
| 186 | REG ptp_reg[] = {\r |
| 187 | { ORDATA (BUF, ptp_unit.buf, 8) },\r |
| 188 | { FLDATA (READY, dev_int, INT_V_PTP) },\r |
| 189 | { FLDATA (ENABLE, dev_enb, INT_V_PTP) },\r |
| 190 | { FLDATA (POWER, ptp_power, 0) },\r |
| 191 | { DRDATA (POS, ptp_unit.pos, T_ADDR_W), PV_LEFT },\r |
| 192 | { ORDATA (PSTATE, ptp_unit.STA, 2), REG_HIDDEN },\r |
| 193 | { DRDATA (TIME, ptp_unit.wait, 24), PV_LEFT },\r |
| 194 | { DRDATA (PWRTIME, ptp_ptime, 24), PV_LEFT },\r |
| 195 | { FLDATA (STOP_IOE, ptp_stopioe, 0) },\r |
| 196 | { NULL }\r |
| 197 | };\r |
| 198 | \r |
| 199 | DEVICE ptp_dev = {\r |
| 200 | "PTP", &ptp_unit, ptp_reg, pt_mod,\r |
| 201 | 1, 10, 31, 1, 8, 8,\r |
| 202 | NULL, NULL, &ptp_reset,\r |
| 203 | NULL, &pt_attach, NULL,\r |
| 204 | &ptp_dib, 0\r |
| 205 | };\r |
| 206 | \r |
| 207 | /* TTY data structures\r |
| 208 | \r |
| 209 | tty_dev TTY device descriptor\r |
| 210 | tty_unit TTY unit descriptor\r |
| 211 | tty_reg TTY register list\r |
| 212 | tty_mod TTy modifiers list\r |
| 213 | */\r |
| 214 | \r |
| 215 | #define TTI 0\r |
| 216 | #define TTO 1\r |
| 217 | #define TTR 2\r |
| 218 | #define TTP 3\r |
| 219 | \r |
| 220 | DIB tty_dib = { TTY, IOBUS, 1, &ttyio };\r |
| 221 | \r |
| 222 | UNIT tty_unit[] = {\r |
| 223 | { UDATA (&tti_svc, TT_MODE_KSR, 0), KBD_POLL_WAIT },\r |
| 224 | { UDATA (&tto_svc, TT_MODE_KSR, 0), SERIAL_OUT_WAIT },\r |
| 225 | { UDATA (NULL, UNIT_SEQ+UNIT_ATTABLE+UNIT_ROABLE, 0) },\r |
| 226 | { UDATA (NULL, UNIT_SEQ+UNIT_ATTABLE, 0) }\r |
| 227 | };\r |
| 228 | \r |
| 229 | REG tty_reg[] = {\r |
| 230 | { ORDATA (BUF, tty_buf, 8) },\r |
| 231 | { FLDATA (MODE, tty_mode, 0) },\r |
| 232 | { FLDATA (READY, dev_int, INT_V_TTY) },\r |
| 233 | { FLDATA (ENABLE, dev_enb, INT_V_TTY) },\r |
| 234 | { DRDATA (KPOS, tty_unit[TTI].pos, T_ADDR_W), PV_LEFT },\r |
| 235 | { DRDATA (KTIME, tty_unit[TTI].wait, 24), REG_NZ + PV_LEFT },\r |
| 236 | { DRDATA (TPOS, tty_unit[TTO].pos, T_ADDR_W), PV_LEFT },\r |
| 237 | { DRDATA (TTIME, tty_unit[TTO].wait, 24), REG_NZ + PV_LEFT },\r |
| 238 | { ORDATA (RXOFF, ttr_xoff_read, 2), REG_HIDDEN },\r |
| 239 | { ORDATA (RSTATE, tty_unit[TTR].STA, 2), REG_HIDDEN },\r |
| 240 | { DRDATA (RPOS, tty_unit[TTR].pos, T_ADDR_W), PV_LEFT },\r |
| 241 | { ORDATA (PTAPE, ttp_tape_rcvd, 2), REG_HIDDEN },\r |
| 242 | { ORDATA (PXOFF, ttp_xoff_rcvd, 2), REG_HIDDEN },\r |
| 243 | { ORDATA (PSTATE, tty_unit[TTP].STA, 2), REG_HIDDEN },\r |
| 244 | { DRDATA (PPOS, tty_unit[TTP].pos, T_ADDR_W), PV_LEFT },\r |
| 245 | { FLDATA (STOP_IOE, ttr_stopioe, 0) },\r |
| 246 | { NULL }\r |
| 247 | };\r |
| 248 | \r |
| 249 | MTAB tty_mod[] = {\r |
| 250 | { TT_MODE, TT_MODE_KSR, "KSR", "KSR", &ttio_set_mode },\r |
| 251 | { TT_MODE, TT_MODE_7B, "7b", "7B", &ttio_set_mode },\r |
| 252 | { TT_MODE, TT_MODE_8B, "8b", "8B", &ttio_set_mode },\r |
| 253 | { TT_MODE, TT_MODE_7P, "7p", "7P", &ttio_set_mode },\r |
| 254 | { UNIT_ATTABLE+UNIT_ASC+UNIT_UASC, UNIT_ATTABLE, NULL, "BINARY",\r |
| 255 | &ttrp_set_mode },\r |
| 256 | { UNIT_ATTABLE+UNIT_ASC+UNIT_UASC, UNIT_ATTABLE+UNIT_ASC, "ASCII", "ASCII",\r |
| 257 | &ttrp_set_mode },\r |
| 258 | { UNIT_ATTABLE+UNIT_ASC+UNIT_UASC, UNIT_ATTABLE+UNIT_ASC+UNIT_UASC, "Unix ASCII", "UASCII",\r |
| 259 | &ttrp_set_mode },\r |
| 260 | { MTAB_XTD|MTAB_VUN|MTAB_NMO, 1, NULL, "START", &ttrp_set_start_stop },\r |
| 261 | { MTAB_XTD|MTAB_VUN|MTAB_NMO, 0, NULL, "STOP", &ttrp_set_start_stop },\r |
| 262 | { 0 }\r |
| 263 | };\r |
| 264 | \r |
| 265 | DEVICE tty_dev = {\r |
| 266 | "TTY", tty_unit, tty_reg, tty_mod,\r |
| 267 | 4, 10, 31, 1, 8, 8,\r |
| 268 | NULL, NULL, &tty_reset,\r |
| 269 | NULL, &pt_attach, &pt_detach,\r |
| 270 | &tty_dib, 0\r |
| 271 | };\r |
| 272 | \r |
| 273 | /* CLK data structures\r |
| 274 | \r |
| 275 | clk_dev CLK device descriptor\r |
| 276 | clk_unit CLK unit descriptor\r |
| 277 | clk_mod CLK modifiers\r |
| 278 | clk_reg CLK register list\r |
| 279 | */\r |
| 280 | \r |
| 281 | DIB clk_dib = { CLK_KEYS, IOBUS, 1, &clkio };\r |
| 282 | \r |
| 283 | UNIT clk_unit = { UDATA (&clk_svc, 0, 0), 16000 };\r |
| 284 | \r |
| 285 | REG clk_reg[] = {\r |
| 286 | { FLDATA (READY, dev_int, INT_V_CLK) },\r |
| 287 | { FLDATA (ENABLE, dev_enb, INT_V_CLK) },\r |
| 288 | { DRDATA (TIME, clk_unit.wait, 24), REG_NZ + PV_LEFT },\r |
| 289 | { DRDATA (TPS, clk_tps, 8), PV_LEFT + REG_HRO },\r |
| 290 | { NULL }\r |
| 291 | };\r |
| 292 | \r |
| 293 | MTAB clk_mod[] = {\r |
| 294 | { MTAB_XTD|MTAB_VDV, 50, NULL, "50HZ",\r |
| 295 | &clk_set_freq, NULL, NULL },\r |
| 296 | { MTAB_XTD|MTAB_VDV, 60, NULL, "60HZ",\r |
| 297 | &clk_set_freq, NULL, NULL },\r |
| 298 | { MTAB_XTD|MTAB_VDV, 0, "FREQUENCY", NULL,\r |
| 299 | NULL, &clk_show_freq, NULL },\r |
| 300 | { 0 }\r |
| 301 | };\r |
| 302 | \r |
| 303 | DEVICE clk_dev = {\r |
| 304 | "CLK", &clk_unit, clk_reg, clk_mod,\r |
| 305 | 1, 0, 0, 0, 0, 0,\r |
| 306 | NULL, NULL, &clk_reset,\r |
| 307 | NULL, NULL, NULL,\r |
| 308 | &clk_dib, 0\r |
| 309 | };\r |
| 310 | \r |
| 311 | /* Paper tape reader: IO routine */\r |
| 312 | \r |
| 313 | int32 ptrio (int32 inst, int32 fnc, int32 dat, int32 dev)\r |
| 314 | {\r |
| 315 | switch (inst) { /* case on opcode */\r |
| 316 | \r |
| 317 | case ioOCP: /* OCP */\r |
| 318 | if (fnc & 016) return IOBADFNC (dat); /* only fnc 0,1 */\r |
| 319 | ptr_motion = fnc ^ 1;\r |
| 320 | if (fnc) sim_cancel (&ptr_unit); /* fnc 1? stop */\r |
| 321 | else sim_activate (&ptr_unit, ptr_unit.wait); /* fnc 0? start */\r |
| 322 | break;\r |
| 323 | \r |
| 324 | case ioSKS: /* SKS */\r |
| 325 | if (fnc & 013) return IOBADFNC (dat); /* only fnc 0,4 */\r |
| 326 | if (((fnc == 000) && TST_INT (INT_PTR)) || /* fnc 0? skip rdy */\r |
| 327 | ((fnc == 004) && !TST_INTREQ (INT_PTR))) /* fnc 4? skip !int */\r |
| 328 | return IOSKIP (dat);\r |
| 329 | break;\r |
| 330 | \r |
| 331 | case ioINA: /* INA */\r |
| 332 | if (fnc) return IOBADFNC (dat); /* only fnc 0 */\r |
| 333 | if (TST_INT (INT_PTR)) { /* ready? */\r |
| 334 | CLR_INT (INT_PTR); /* clear ready */\r |
| 335 | if (ptr_motion) /* if motion, restart */\r |
| 336 | sim_activate (&ptr_unit, ptr_unit.wait);\r |
| 337 | return IOSKIP (ptr_unit.buf | dat); /* ret buf, skip */\r |
| 338 | }\r |
| 339 | break;\r |
| 340 | } /* end case op */\r |
| 341 | \r |
| 342 | return dat;\r |
| 343 | }\r |
| 344 | \r |
| 345 | /* Unit service */\r |
| 346 | \r |
| 347 | t_stat ptr_svc (UNIT *uptr)\r |
| 348 | {\r |
| 349 | int32 c;\r |
| 350 | \r |
| 351 | if ((uptr->flags & UNIT_ATT) == 0) /* attached? */\r |
| 352 | return IORETURN (ptr_stopioe, SCPE_UNATT);\r |
| 353 | if (uptr->STA & LF_PEND) { /* lf pending? */\r |
| 354 | uptr->STA &= ~LF_PEND; /* clear flag */\r |
| 355 | c = 0212; /* insert LF */\r |
| 356 | }\r |
| 357 | else {\r |
| 358 | if ((c = getc (uptr->fileref)) == EOF) { /* read byte */\r |
| 359 | if (feof (uptr->fileref)) {\r |
| 360 | if (ptr_stopioe) printf ("PTR end of file\n");\r |
| 361 | else return SCPE_OK;\r |
| 362 | }\r |
| 363 | else perror ("PTR I/O error");\r |
| 364 | clearerr (uptr->fileref);\r |
| 365 | return SCPE_IOERR;\r |
| 366 | }\r |
| 367 | if ((uptr->flags & UNIT_UASC) && (c == '\n')) { /* Unix newline? */\r |
| 368 | c = 0215; /* insert CR */\r |
| 369 | uptr->STA |= LF_PEND; /* lf pending */\r |
| 370 | }\r |
| 371 | else if ((uptr->flags & UNIT_ASC) && (c != 0)) /* ASCII? */\r |
| 372 | c = c | 0200;\r |
| 373 | uptr->pos = ftell (uptr->fileref); /* update pos */\r |
| 374 | }\r |
| 375 | SET_INT (INT_PTR); /* set ready flag */\r |
| 376 | uptr->buf = c & 0377; /* get byte */\r |
| 377 | return SCPE_OK;\r |
| 378 | }\r |
| 379 | \r |
| 380 | /* Paper tape attach routine - set or clear ASC/UASC flags if specified */\r |
| 381 | \r |
| 382 | t_stat pt_attach (UNIT *uptr, char *cptr)\r |
| 383 | {\r |
| 384 | t_stat r;\r |
| 385 | \r |
| 386 | if (!(uptr->flags & UNIT_ATTABLE)) return SCPE_NOFNC;\r |
| 387 | if (r = attach_unit (uptr, cptr)) return r;\r |
| 388 | if (sim_switches & SWMASK ('A')) /* -a? ASCII */\r |
| 389 | uptr->flags |= UNIT_ASC;\r |
| 390 | else if (sim_switches & SWMASK ('U')) /* -u? Unix ASCII */\r |
| 391 | uptr->flags |= (UNIT_ASC|UNIT_UASC);\r |
| 392 | else if (sim_switches & SWMASK ('B')) /* -b? binary */\r |
| 393 | uptr->flags &= ~(UNIT_ASC|UNIT_UASC);\r |
| 394 | uptr->STA = 0;\r |
| 395 | return r;\r |
| 396 | }\r |
| 397 | \r |
| 398 | /* Detach routine - stop motion if not restore */\r |
| 399 | \r |
| 400 | t_stat pt_detach (UNIT *uptr)\r |
| 401 | {\r |
| 402 | if (!(sim_switches & SIM_SW_REST)) sim_cancel (uptr); /* stop motion */\r |
| 403 | uptr->STA = 0;\r |
| 404 | return detach_unit (uptr);\r |
| 405 | }\r |
| 406 | \r |
| 407 | /* Reset routine */\r |
| 408 | \r |
| 409 | t_stat ptr_reset (DEVICE *dptr)\r |
| 410 | {\r |
| 411 | CLR_INT (INT_PTR); /* clear ready, enb */\r |
| 412 | CLR_ENB (INT_PTR);\r |
| 413 | ptr_unit.buf = 0; /* clear buffer */\r |
| 414 | ptr_unit.STA = 0;\r |
| 415 | ptr_motion = 0; /* unit stopped */\r |
| 416 | sim_cancel (&ptr_unit); /* deactivate unit */\r |
| 417 | return SCPE_OK;\r |
| 418 | }\r |
| 419 | \r |
| 420 | /* Paper tape reader bootstrap routine */\r |
| 421 | \r |
| 422 | #define PBOOT_START 1\r |
| 423 | #define PBOOT_SIZE (sizeof (pboot) / sizeof (int32))\r |
| 424 | \r |
| 425 | static const int32 pboot[] = {\r |
| 426 | 0010057, /* STA 57 */\r |
| 427 | 0030001, /* OCP 1 */\r |
| 428 | 0131001, /* READ, INA 1001 */\r |
| 429 | 0002003, /* JMP READ */\r |
| 430 | 0101040, /* SNZ */\r |
| 431 | 0002003, /* JMP READ */\r |
| 432 | 0010000, /* STA 0 */\r |
| 433 | 0131001, /* READ1, INA 1001 */\r |
| 434 | 0002010, /* JMP READ1 */\r |
| 435 | 0041470, /* LGL 8 */\r |
| 436 | 0130001, /* READ2, INA 1 */\r |
| 437 | 0002013, /* JMP READ2 */\r |
| 438 | 0110000, /* STA* 0 */\r |
| 439 | 0024000, /* IRS 0 */\r |
| 440 | 0100040 /* SZE */\r |
| 441 | };\r |
| 442 | \r |
| 443 | t_stat ptr_boot (int32 unitno, DEVICE *dptr)\r |
| 444 | {\r |
| 445 | int32 i;\r |
| 446 | \r |
| 447 | for (i = 0; i < PBOOT_SIZE; i++) /* copy bootstrap */\r |
| 448 | M[PBOOT_START + i] = pboot[i];\r |
| 449 | PC = PBOOT_START; \r |
| 450 | return SCPE_OK;\r |
| 451 | }\r |
| 452 | \r |
| 453 | /* Paper tape punch: IO routine */\r |
| 454 | \r |
| 455 | int32 ptpio (int32 inst, int32 fnc, int32 dat, int32 dev)\r |
| 456 | {\r |
| 457 | switch (inst) { /* case on opcode */\r |
| 458 | \r |
| 459 | case ioOCP: /* OCP */\r |
| 460 | if (fnc & 016) return IOBADFNC (dat); /* only fnc 0,1 */\r |
| 461 | if (fnc) { /* fnc 1? pwr off */\r |
| 462 | CLR_INT (INT_PTP); /* not ready */\r |
| 463 | ptp_power = 0; /* turn off power */\r |
| 464 | sim_cancel (&ptp_unit); /* stop punch */\r |
| 465 | }\r |
| 466 | else if (ptp_power == 0) /* fnc 0? start */\r |
| 467 | sim_activate (&ptp_unit, ptp_ptime);\r |
| 468 | break;\r |
| 469 | \r |
| 470 | case ioSKS: /* SKS */\r |
| 471 | if ((fnc & 012) || (fnc == 005)) /* only 0, 1, 4 */\r |
| 472 | return IOBADFNC (dat);\r |
| 473 | if (((fnc == 000) && TST_INT (INT_PTP)) || /* fnc 0? skip rdy */\r |
| 474 | ((fnc == 001) && /* fnc 1? skip ptp on */\r |
| 475 | (ptp_power || sim_is_active (&ptp_unit))) ||\r |
| 476 | ((fnc == 004) && !TST_INTREQ (INT_PTP))) /* fnc 4? skip !int */\r |
| 477 | return IOSKIP (dat);\r |
| 478 | break;\r |
| 479 | \r |
| 480 | case ioOTA: /* OTA */\r |
| 481 | if (fnc) return IOBADFNC (dat); /* only fnc 0 */\r |
| 482 | if (TST_INT (INT_PTP)) { /* if ptp ready */\r |
| 483 | CLR_INT (INT_PTP); /* clear ready */\r |
| 484 | ptp_unit.buf = dat & 0377; /* store byte */\r |
| 485 | sim_activate (&ptp_unit, ptp_unit.wait);\r |
| 486 | return IOSKIP (dat); /* skip return */\r |
| 487 | }\r |
| 488 | break;\r |
| 489 | }\r |
| 490 | \r |
| 491 | return dat;\r |
| 492 | }\r |
| 493 | \r |
| 494 | /* Unit service */\r |
| 495 | \r |
| 496 | t_stat ptp_svc (UNIT *uptr)\r |
| 497 | {\r |
| 498 | int32 c;\r |
| 499 | \r |
| 500 | SET_INT (INT_PTP); /* set flag */\r |
| 501 | if (ptp_power == 0) { /* power on? */\r |
| 502 | ptp_power = 1; /* ptp is ready */\r |
| 503 | return SCPE_OK;\r |
| 504 | }\r |
| 505 | if ((uptr->flags & UNIT_ATT) == 0) /* attached? */\r |
| 506 | return IORETURN (ptp_stopioe, SCPE_UNATT);\r |
| 507 | if (uptr->flags & UNIT_ASC) { /* ASCII? */\r |
| 508 | c = uptr->buf & 0177; /* mask to 7b */\r |
| 509 | if ((uptr->flags & UNIT_UASC) && (c == 015)) /* cr? drop if Unix */\r |
| 510 | return SCPE_OK;\r |
| 511 | else if (c == 012) c = '\n'; /* lf? cvt to nl */\r |
| 512 | }\r |
| 513 | else c = uptr->buf & 0377; /* no, binary */\r |
| 514 | if (putc (c, uptr->fileref) == EOF) { /* output byte */\r |
| 515 | perror ("PTP I/O error");\r |
| 516 | clearerr (uptr->fileref);\r |
| 517 | return SCPE_IOERR;\r |
| 518 | }\r |
| 519 | uptr->pos = ftell (uptr->fileref); /* update pos */\r |
| 520 | return SCPE_OK;\r |
| 521 | }\r |
| 522 | \r |
| 523 | /* Reset routine */\r |
| 524 | \r |
| 525 | t_stat ptp_reset (DEVICE *dptr)\r |
| 526 | {\r |
| 527 | CLR_INT (INT_PTP); /* clear ready, enb */\r |
| 528 | CLR_ENB (INT_PTP);\r |
| 529 | ptp_power = 0; /* power off */\r |
| 530 | ptp_unit.buf = 0; /* clear buffer */\r |
| 531 | ptp_unit.STA = 0;\r |
| 532 | sim_cancel (&ptp_unit); /* deactivate unit */\r |
| 533 | return SCPE_OK;\r |
| 534 | }\r |
| 535 | \r |
| 536 | /* Terminal: IO routine */\r |
| 537 | \r |
| 538 | int32 ttyio (int32 inst, int32 fnc, int32 dat, int32 dev)\r |
| 539 | {\r |
| 540 | switch (inst) { /* case on opcode */\r |
| 541 | \r |
| 542 | case ioOCP: /* OCP */\r |
| 543 | if (fnc & 016) return IOBADFNC (dat); /* only fnc 0,1 */\r |
| 544 | if (fnc && (tty_mode == 0)) { /* input to output? */\r |
| 545 | if (!sim_is_active (&tty_unit[TTO])) /* set ready */\r |
| 546 | SET_INT (INT_TTY);\r |
| 547 | tty_mode = 1; /* mode is output */\r |
| 548 | }\r |
| 549 | else if ((fnc == 0) && tty_mode) { /* output to input? */\r |
| 550 | CLR_INT (INT_TTY); /* clear ready */\r |
| 551 | tty_mode = 0; /* mode is input */\r |
| 552 | }\r |
| 553 | break;\r |
| 554 | \r |
| 555 | case ioSKS: /* SKS */\r |
| 556 | if (fnc & 012) return IOBADFNC (dat); /* fnc 0,1,4,5 */\r |
| 557 | if (((fnc == 000) && TST_INT (INT_TTY)) || /* fnc 0? skip rdy */\r |
| 558 | ((fnc == 001) && /* fnc 1? skip !busy */\r |
| 559 | (!tty_mode || !sim_is_active (&tty_unit[TTO]))) ||\r |
| 560 | ((fnc == 004) && !TST_INTREQ (INT_TTY)) || /* fnc 4? skip !int */\r |
| 561 | ((fnc == 005) && (tty_mode || /* fnc 5? skip !xoff */\r |
| 562 | ((tty_buf & 0177) != XOFF)))) /* input & XOFF char */\r |
| 563 | return IOSKIP (dat);\r |
| 564 | break;\r |
| 565 | \r |
| 566 | case ioINA: /* INA */\r |
| 567 | if (fnc & 005) return IOBADFNC (dat); /* only 0,2 */\r |
| 568 | if (TST_INT (INT_TTY)) { /* ready? */\r |
| 569 | if (tty_mode == 0) CLR_INT (INT_TTY); /* inp? clear rdy */\r |
| 570 | return IOSKIP (dat |\r |
| 571 | (tty_buf & ((fnc & 002)? 077: 0377)));\r |
| 572 | }\r |
| 573 | break;\r |
| 574 | \r |
| 575 | case ioOTA:\r |
| 576 | if (fnc & 015) return IOBADFNC (dat); /* only 0,2 */\r |
| 577 | if (TST_INT (INT_TTY)) { /* ready? */\r |
| 578 | tty_buf = dat & 0377; /* store char */\r |
| 579 | if (fnc & 002) { /* binary mode? */\r |
| 580 | tty_buf = tty_buf | 0100; /* set ch 7 */\r |
| 581 | if (tty_buf & 040) tty_buf = tty_buf & 0277;\r |
| 582 | }\r |
| 583 | if (tty_mode) {\r |
| 584 | sim_activate (&tty_unit[TTO], tty_unit[TTO].wait);\r |
| 585 | CLR_INT (INT_TTY);\r |
| 586 | }\r |
| 587 | return IOSKIP (dat);\r |
| 588 | }\r |
| 589 | break;\r |
| 590 | } /* end case op */\r |
| 591 | \r |
| 592 | return dat;\r |
| 593 | }\r |
| 594 | \r |
| 595 | /* Input service - keyboard and reader */\r |
| 596 | \r |
| 597 | t_stat tti_svc (UNIT *uptr)\r |
| 598 | {\r |
| 599 | int32 out, c;\r |
| 600 | UNIT *ruptr = &tty_unit[TTR];\r |
| 601 | \r |
| 602 | sim_activate (uptr, uptr->wait); /* continue poll */\r |
| 603 | if ((c = sim_poll_kbd ()) >= SCPE_KFLAG) { /* character? */\r |
| 604 | out = c & 0177; /* mask echo to 7b */\r |
| 605 | if (c & SCPE_BREAK) c = 0; /* break? */\r |
| 606 | else c = sim_tt_inpcvt (c, TT_GET_MODE (uptr->flags) | TTUF_KSR);\r |
| 607 | uptr->pos = uptr->pos + 1;\r |
| 608 | }\r |
| 609 | else if (c != SCPE_OK) return c; /* error? */\r |
| 610 | else if ((ruptr->flags & UNIT_ATT) && /* TTR attached */\r |
| 611 | (ruptr->STA & RUNNING)) { /* and running? */\r |
| 612 | if (ruptr->STA & LF_PEND) { /* lf pending? */\r |
| 613 | c = 0212; /* char is lf */\r |
| 614 | ruptr->STA &= ~LF_PEND; /* clear flag */\r |
| 615 | }\r |
| 616 | else { /* normal read */\r |
| 617 | if ((c = getc (ruptr->fileref)) == EOF) { /* read byte */\r |
| 618 | if (feof (ruptr->fileref)) { /* EOF? */\r |
| 619 | ruptr->STA &= ~RUNNING; /* stop reader */\r |
| 620 | if (ttr_stopioe) printf ("TTR end of file\n");\r |
| 621 | else return SCPE_OK;\r |
| 622 | }\r |
| 623 | else perror ("TTR I/O error");\r |
| 624 | clearerr (ruptr->fileref);\r |
| 625 | return SCPE_IOERR;\r |
| 626 | }\r |
| 627 | if ((ruptr->flags & UNIT_UASC) && (c == '\n')) {\r |
| 628 | c = 0215; /* Unix ASCII NL? */\r |
| 629 | ruptr->STA |= LF_PEND; /* LF pending */\r |
| 630 | }\r |
| 631 | else if ((ruptr->flags & UNIT_ASC) && (c != 0))\r |
| 632 | c = c | 0200; /* ASCII nz? cvt */\r |
| 633 | ruptr->pos = ftell (ruptr->fileref);\r |
| 634 | }\r |
| 635 | if (ttr_xoff_read != 0) { /* reader stopping? */\r |
| 636 | if (c == RUBOUT) ttr_xoff_read = 0; /* rubout? stop */\r |
| 637 | else ttr_xoff_read--; /* else decr state */\r |
| 638 | if (ttr_xoff_read == 0) /* delay done? */\r |
| 639 | ruptr->STA &= ~RUNNING; /* stop reader */\r |
| 640 | }\r |
| 641 | else if ((c & 0177) == XOFF) ttr_xoff_read = 2; /* XOFF read? */\r |
| 642 | out = c; /* echo char */\r |
| 643 | }\r |
| 644 | else return SCPE_OK; /* no char */\r |
| 645 | if (tty_mode == 0) { /* input mode? */\r |
| 646 | tty_buf = c & 0377; /* put char in buf */\r |
| 647 | SET_INT (INT_TTY); /* set flag */\r |
| 648 | }\r |
| 649 | tto_write (out); /* echo to printer */\r |
| 650 | return ttp_write (out); /* and punch */\r |
| 651 | }\r |
| 652 | \r |
| 653 | /* Output service - printer and punch */\r |
| 654 | \r |
| 655 | t_stat tto_svc (UNIT *uptr)\r |
| 656 | {\r |
| 657 | uint32 c7b;\r |
| 658 | UNIT *ruptr = &tty_unit[TTR];\r |
| 659 | UNIT *puptr = &tty_unit[TTP];\r |
| 660 | t_stat r;\r |
| 661 | \r |
| 662 | c7b = tty_buf & 0177;\r |
| 663 | if (ttp_tape_rcvd != 0) { /* prev = tape? */\r |
| 664 | ttp_tape_rcvd--; /* decrement state */\r |
| 665 | if ((ttp_tape_rcvd == 0) && (puptr->flags & UNIT_ATT))\r |
| 666 | puptr->STA |= RUNNING; /* start after delay */\r |
| 667 | }\r |
| 668 | else if (c7b == TAPE) ttp_tape_rcvd = 2; /* char = TAPE? */\r |
| 669 | if (ttp_xoff_rcvd != 0) { /* prev = XOFF? */\r |
| 670 | ttp_xoff_rcvd--; /* decrement state */\r |
| 671 | if (ttp_xoff_rcvd == 0) puptr->STA &= ~RUNNING; /* stop after delay */\r |
| 672 | }\r |
| 673 | else if (c7b == XOFF) ttp_xoff_rcvd = 2; /* char = XOFF? */\r |
| 674 | if ((c7b == XON) && (ruptr->flags & UNIT_ATT)) { /* char = XON? */\r |
| 675 | ruptr->STA |= RUNNING; /* start reader */\r |
| 676 | ttr_xoff_read = 0; /* cancel stop */\r |
| 677 | }\r |
| 678 | if ((r = tto_write (tty_buf)) != SCPE_OK) { /* print; error? */\r |
| 679 | sim_activate (uptr, uptr->wait); /* try again */\r |
| 680 | return ((r == SCPE_STALL)? SCPE_OK: r); /* !stall? report */\r |
| 681 | }\r |
| 682 | if ((r = ttp_write (tty_buf)) != SCPE_OK) return r; /* punch; error? */\r |
| 683 | SET_INT (INT_TTY); /* set done flag */\r |
| 684 | return SCPE_OK;\r |
| 685 | }\r |
| 686 | \r |
| 687 | /* Output to printer */\r |
| 688 | \r |
| 689 | t_stat tto_write (int32 c)\r |
| 690 | {\r |
| 691 | UNIT *tuptr = &tty_unit[TTO];\r |
| 692 | \r |
| 693 | c = sim_tt_outcvt (c, TT_GET_MODE (tuptr->flags) | TTUF_KSR);\r |
| 694 | tuptr->pos = tuptr->pos + 1;\r |
| 695 | if (c >= 0) return sim_putchar_s (c);\r |
| 696 | else return SCPE_OK;\r |
| 697 | }\r |
| 698 | \r |
| 699 | /* Output to punch */\r |
| 700 | \r |
| 701 | t_stat ttp_write (int32 c)\r |
| 702 | {\r |
| 703 | uint32 p, c7b;\r |
| 704 | UNIT *puptr = &tty_unit[TTP];\r |
| 705 | \r |
| 706 | if ((puptr->flags & UNIT_ATT) && /* TTP attached */\r |
| 707 | (puptr->STA & RUNNING)) { /* and running? */\r |
| 708 | c7b = c & 0177;\r |
| 709 | if (!(puptr->flags & UNIT_UASC) || (c7b != 015)) {\r |
| 710 | if (puptr->flags & UNIT_ASC) { /* ASCII? */\r |
| 711 | if (c7b == 012) p = '\n'; /* cvt LF */\r |
| 712 | else p = c7b; /* else 7b */\r |
| 713 | }\r |
| 714 | else p = c; /* untouched */\r |
| 715 | if (putc (p, puptr->fileref) == EOF) { /* output byte */\r |
| 716 | perror ("TTP I/O error");\r |
| 717 | clearerr (puptr->fileref);\r |
| 718 | return SCPE_IOERR;\r |
| 719 | }\r |
| 720 | puptr->pos = ftell (puptr->fileref); /* update pos */\r |
| 721 | }\r |
| 722 | }\r |
| 723 | return SCPE_OK;\r |
| 724 | }\r |
| 725 | \r |
| 726 | /* Reset routine */\r |
| 727 | \r |
| 728 | t_stat tty_reset (DEVICE *dptr)\r |
| 729 | {\r |
| 730 | CLR_INT (INT_TTY); /* clear ready, enb */\r |
| 731 | CLR_ENB (INT_TTY);\r |
| 732 | tty_mode = 0; /* mode = input */\r |
| 733 | tty_buf = 0;\r |
| 734 | ttr_xoff_read = 0; /* clr TTR, TTP flags */\r |
| 735 | ttp_tape_rcvd = 0;\r |
| 736 | ttp_xoff_rcvd = 0;\r |
| 737 | tty_unit[TTR].STA = 0;\r |
| 738 | tty_unit[TTP].STA = 0;\r |
| 739 | sim_activate (&tty_unit[TTI], tty_unit[TTI].wait); /* activate poll */\r |
| 740 | sim_cancel (&tty_unit[TTO]); /* cancel output */\r |
| 741 | return SCPE_OK;\r |
| 742 | }\r |
| 743 | \r |
| 744 | /* Set keyboard/printer mode - make sure flags agree */\r |
| 745 | \r |
| 746 | t_stat ttio_set_mode (UNIT *uptr, int32 val, char *cptr, void *desc)\r |
| 747 | {\r |
| 748 | if (uptr->flags & UNIT_ATTABLE) return SCPE_NOFNC; /* not TTR, TTP */\r |
| 749 | tty_unit[TTO].flags = (tty_unit[TTO].flags & ~TT_MODE) | val;\r |
| 750 | if (val == TT_MODE_7P) val = TT_MODE_7B;\r |
| 751 | tty_unit[TTI].flags = (tty_unit[TTI].flags & ~TT_MODE) | val;\r |
| 752 | return SCPE_OK;\r |
| 753 | }\r |
| 754 | \r |
| 755 | /* Set reader/punch mode */\r |
| 756 | \r |
| 757 | t_stat ttrp_set_mode (UNIT *uptr, int32 val, char *cptr, void *desc)\r |
| 758 | {\r |
| 759 | if (!(uptr->flags & UNIT_ATTABLE)) return SCPE_NOFNC; /* TTR, TTP only */\r |
| 760 | if (!(val & UNIT_UASC)) uptr->STA &= ~LF_PEND;\r |
| 761 | return SCPE_OK;\r |
| 762 | }\r |
| 763 | \r |
| 764 | /* Set reader/punch start/stop */\r |
| 765 | \r |
| 766 | t_stat ttrp_set_start_stop (UNIT *uptr, int32 val, char *cptr, void *desc)\r |
| 767 | {\r |
| 768 | if (!(uptr->flags & UNIT_ATTABLE)) return SCPE_NOFNC; /* TTR, TTP only */\r |
| 769 | if (!(uptr->flags & UNIT_ATT)) return SCPE_UNATT; /* must be attached */\r |
| 770 | if (val) uptr->STA |= RUNNING; /* start? set running */\r |
| 771 | else uptr->STA &= ~RUNNING; /* stop? clr running */\r |
| 772 | if (uptr->flags & UNIT_ROABLE) ttr_xoff_read = 0; /* TTR? cancel stop */\r |
| 773 | else ttp_tape_rcvd = ttp_xoff_rcvd = 0; /* TTP? cancel all */\r |
| 774 | return SCPE_OK;\r |
| 775 | }\r |
| 776 | \r |
| 777 | /* Clock/options: IO routine */\r |
| 778 | \r |
| 779 | int32 clkio (int32 inst, int32 fnc, int32 dat, int32 dev)\r |
| 780 | {\r |
| 781 | switch (inst) { /* case on opcode */\r |
| 782 | \r |
| 783 | case ioOCP: /* OCP */\r |
| 784 | if (fnc & 015) return IOBADFNC (dat); /* only fnc 0,2 */\r |
| 785 | CLR_INT (INT_CLK); /* reset ready */\r |
| 786 | if (fnc) sim_cancel (&clk_unit); /* fnc = 2? stop */\r |
| 787 | else { /* fnc = 0? */\r |
| 788 | if (!sim_is_active (&clk_unit))\r |
| 789 | sim_activate (&clk_unit, /* activate */\r |
| 790 | sim_rtc_init (clk_unit.wait)); /* init calibr */\r |
| 791 | }\r |
| 792 | break;\r |
| 793 | \r |
| 794 | case ioSKS: /* SKS */\r |
| 795 | if (fnc == 000) { /* clock skip !int */\r |
| 796 | if (!TST_INTREQ (INT_CLK)) return IOSKIP (dat);\r |
| 797 | }\r |
| 798 | else if ((fnc & 007) == 002) { /* mem parity? */\r |
| 799 | if (((fnc == 002) && !TST_INT (INT_MPE)) ||\r |
| 800 | ((fnc == 012) && TST_INT (INT_MPE)))\r |
| 801 | return IOSKIP (dat);\r |
| 802 | }\r |
| 803 | else return IOBADFNC (dat); /* invalid fnc */\r |
| 804 | break;\r |
| 805 | \r |
| 806 | case ioOTA: /* OTA */\r |
| 807 | if (fnc == 000) dev_enb = dat; /* SMK */\r |
| 808 | else if (fnc == 010) { /* OTK */\r |
| 809 | C = (dat >> 15) & 1; /* set C */\r |
| 810 | if (cpu_unit.flags & UNIT_HSA) /* HSA included? */\r |
| 811 | dp = (dat >> 14) & 1; /* set dp */\r |
| 812 | if (cpu_unit.flags & UNIT_EXT) { /* ext opt? */\r |
| 813 | if (dat & 020000) { /* ext set? */\r |
| 814 | ext = 1; /* yes, set */\r |
| 815 | extoff_pending = 0;\r |
| 816 | }\r |
| 817 | else extoff_pending = 1; /* no, clr later */\r |
| 818 | }\r |
| 819 | sc = dat & 037; /* set sc */\r |
| 820 | }\r |
| 821 | else return IOBADFNC (dat);\r |
| 822 | break;\r |
| 823 | }\r |
| 824 | \r |
| 825 | return dat;\r |
| 826 | }\r |
| 827 | \r |
| 828 | /* Unit service */\r |
| 829 | \r |
| 830 | t_stat clk_svc (UNIT *uptr)\r |
| 831 | {\r |
| 832 | \r |
| 833 | M[M_CLK] = (M[M_CLK] + 1) & DMASK; /* increment mem ctr */\r |
| 834 | if (M[M_CLK] == 0) SET_INT (INT_CLK); /* = 0? set flag */\r |
| 835 | sim_activate (&clk_unit, sim_rtc_calb (clk_tps)); /* reactivate */\r |
| 836 | return SCPE_OK;\r |
| 837 | }\r |
| 838 | \r |
| 839 | /* Reset routine */\r |
| 840 | \r |
| 841 | t_stat clk_reset (DEVICE *dptr)\r |
| 842 | {\r |
| 843 | CLR_INT (INT_CLK); /* clear ready, enb */\r |
| 844 | CLR_ENB (INT_CLK);\r |
| 845 | sim_cancel (&clk_unit); /* deactivate unit */\r |
| 846 | return SCPE_OK;\r |
| 847 | }\r |
| 848 | \r |
| 849 | /* Set frequency */\r |
| 850 | \r |
| 851 | t_stat clk_set_freq (UNIT *uptr, int32 val, char *cptr, void *desc)\r |
| 852 | {\r |
| 853 | if (cptr) return SCPE_ARG;\r |
| 854 | if ((val != 50) && (val != 60)) return SCPE_IERR;\r |
| 855 | clk_tps = val;\r |
| 856 | return SCPE_OK;\r |
| 857 | }\r |
| 858 | \r |
| 859 | /* Show frequency */\r |
| 860 | \r |
| 861 | t_stat clk_show_freq (FILE *st, UNIT *uptr, int32 val, void *desc)\r |
| 862 | {\r |
| 863 | fprintf (st, (clk_tps == 50)? "50Hz": "60Hz");\r |
| 864 | return SCPE_OK;\r |
| 865 | }\r |