| 1 | /* nova_qty.c: NOVA multiplexor (QTY/ALM) simulator\r |
| 2 | \r |
| 3 | Copyright (c) 2000-2008, Robert M. Supnik\r |
| 4 | Written by Bruce Ray and used with his gracious permission.\r |
| 5 | \r |
| 6 | Permission is hereby granted, free of charge, to any person obtaining a\r |
| 7 | copy of this software and associated documentation files (the "Software"),\r |
| 8 | to deal in the Software without restriction, including without limitation\r |
| 9 | the rights to use, copy, modify, merge, publish, distribute, sublicense,\r |
| 10 | and/or sell copies of the Software, and to permit persons to whom the\r |
| 11 | Software is furnished to do so, subject to the following conditions:\r |
| 12 | \r |
| 13 | The above copyright notice and this permission notice shall be included in\r |
| 14 | all copies or substantial portions of the Software.\r |
| 15 | \r |
| 16 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r |
| 17 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r |
| 18 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\r |
| 19 | ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r |
| 20 | IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r |
| 21 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r |
| 22 | \r |
| 23 | Except as contained in this notice, the name of Robert M Supnik shall not be\r |
| 24 | used in advertising or otherwise to promote the sale, use or other dealings\r |
| 25 | in this Software without prior written authorization from Robert M Supnik.\r |
| 26 | \r |
| 27 | qty multiplexor: QTY = 4060, ALM = 42xx\r |
| 28 | \r |
| 29 | 04-Jul-07 BKR fixed QTY output line number calculation (affected higher line numbers),\r |
| 30 | 25-Mar-04 RMS Updated for V3.2\r |
| 31 | 12-Jan-04 BKR Initial release\r |
| 32 | includes both original DG "quad" multiplexor (QTY)\r |
| 33 | and later Asynchronous Line Multiplexor (ALM) support.\r |
| 34 | */\r |
| 35 | \r |
| 36 | \r |
| 37 | /*----------------------------------------------------------------------*/\r |
| 38 | /* QTY [4060-compatible] multiplexor */\r |
| 39 | /*----------------------------------------------------------------------*/\r |
| 40 | \r |
| 41 | /*\r |
| 42 | * Emulate the DG 4060 "quad" (QTY) serial port multiplexor. DG modem\r |
| 43 | * control is not supported in this revision due to its obtuse nature\r |
| 44 | * of using a separate [semi-secret] device MDM which is actually part\r |
| 45 | * of the DG 4026/4027 multiplexor hardware(!).\r |
| 46 | * (Full modem support is provided in the ALM driver.)\r |
| 47 | *\r |
| 48 | *\r |
| 49 | * 4060 Hardware\r |
| 50 | *\r |
| 51 | * device code: 030 [primary],\r |
| 52 | * 070 [secondary]\r |
| 53 | * interrupt mask: B14 [000002]\r |
| 54 | * ASM mnemonic: QTY\r |
| 55 | *\r |
| 56 | *\r |
| 57 | * 4060 Input/Output Word Format:\r |
| 58 | *\r |
| 59 | * _________________________________________________________________\r |
| 60 | * | RI| TI| channel | character |\r |
| 61 | * ----+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+\r |
| 62 | * 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15\r |
| 63 | *\r |
| 64 | *\r |
| 65 | * RI - receiver interrupt\r |
| 66 | * TI - transmitter interrupt\r |
| 67 | * channel - channel number, 0 - 63.\r |
| 68 | * character- character (valid if receiver interrupt, undefined if transmitter)\r |
| 69 | *\r |
| 70 | * Notes:\r |
| 71 | *\r |
| 72 | * Maximum 64 lines supported.\r |
| 73 | * DONE set whenever any received character fully assembled and ready,\r |
| 74 | * or when any output character transmitted and line is ready\r |
| 75 | * to accept next output character.\r |
| 76 | * BUSY set whenever output character is being sent on any line.\r |
| 77 | * Note that early 4060s did NOT have a busy flag!\r |
| 78 | * IORST clears device Done, no other user instruction does.\r |
| 79 | * IORST clears each line's individual R.I. and T.I.\r |
| 80 | *\r |
| 81 | *\r |
| 82 | * Instructions:\r |
| 83 | *\r |
| 84 | * DIA get multiplexor status word [format defined above]\r |
| 85 | * DOA send character to QTY line [format defined above, RI & SI ]\r |
| 86 | * DIB <ignored> [returns backplane bus noise]\r |
| 87 | * DOB clear QTY line\r |
| 88 | * DIC <ignored> [returns backplace bus noise]\r |
| 89 | * DOC <ignored>\r |
| 90 | * 'C' clears global done, then checks for RI and TI;\r |
| 91 | * 'P' <ignored>\r |
| 92 | * 'S' <ignored>\r |
| 93 | */\r |
| 94 | \r |
| 95 | \r |
| 96 | #include "nova_defs.h"\r |
| 97 | \r |
| 98 | #include "sim_sock.h"\r |
| 99 | #include "sim_tmxr.h"\r |
| 100 | \r |
| 101 | \r |
| 102 | #define UNIT_V_8B (UNIT_V_UF + 0) /* 8b output */\r |
| 103 | #define UNIT_8B (1 << UNIT_V_8B)\r |
| 104 | \r |
| 105 | \r |
| 106 | \r |
| 107 | extern int32 int_req, dev_busy, dev_done, dev_disable ;\r |
| 108 | extern int32 sim_switches ;\r |
| 109 | extern FILE * sim_log ;\r |
| 110 | extern int32 tmxr_poll ; /* calibrated delay */\r |
| 111 | \r |
| 112 | t_stat qty_summary ( FILE * st, UNIT * uptr, int32 val, void * desc ) ;\r |
| 113 | t_stat qty_show ( FILE * st, UNIT * uptr, int32 val, void * desc ) ;\r |
| 114 | t_stat qty_setnl ( UNIT * uptr, int32 val, char * cptr, void * desc ) ;\r |
| 115 | \r |
| 116 | t_stat qty_attach ( UNIT * uptr, char * cptr ) ;\r |
| 117 | t_stat qty_detach ( UNIT * uptr ) ;\r |
| 118 | t_stat qty_reset ( DEVICE * dptr ) ;\r |
| 119 | t_stat qty_svc ( UNIT * uptr ) ;\r |
| 120 | int32 qty ( int32 pulse, int32 code, int32 AC ) ;\r |
| 121 | \r |
| 122 | t_stat alm_reset ( DEVICE * dptr ) ;\r |
| 123 | t_stat alm_svc ( UNIT * uptr ) ;\r |
| 124 | int32 alm ( int32 pulse, int32 code, int32 AC ) ;\r |
| 125 | \r |
| 126 | DEVICE alm_dev ;\r |
| 127 | \r |
| 128 | \r |
| 129 | #define QTY_MAX 64 /* max number of QTY lines - hardware */\r |
| 130 | \r |
| 131 | \r |
| 132 | int32 qty_brkio = SCPE_OK ; /* default I/O status code */\r |
| 133 | int32 qty_max = QTY_MAX ; /* max # QTY lines - user */\r |
| 134 | /* controllable */\r |
| 135 | int32 qty_mdm = 0 ; /* QTY modem control active? */\r |
| 136 | int32 qty_auto = 0 ; /* QTY auto disconnect active? */\r |
| 137 | int32 qty_polls = 0 ; /* total 'qty_svc' polls */\r |
| 138 | \r |
| 139 | \r |
| 140 | TMLN qty_ldsc[ QTY_MAX ] = { 0 } ; /* QTY line descriptors */\r |
| 141 | TMXR qty_desc = { QTY_MAX, 0, 0, qty_ldsc } ; /* mux descriptor */\r |
| 142 | int32 qty_status[ QTY_MAX ] = { 0 } ; /* QTY line status */\r |
| 143 | /* (must be at least 32 bits) */\r |
| 144 | int32 qty_tx_chr[ QTY_MAX ] = { 0 } ; /* QTY line output character */\r |
| 145 | \r |
| 146 | \r |
| 147 | /* QTY data structures\r |
| 148 | \r |
| 149 | qty_dev QTY device descriptor\r |
| 150 | qty_unit QTY unit descriptor\r |
| 151 | qty_reg QTY register list\r |
| 152 | */\r |
| 153 | \r |
| 154 | DIB qty_dib = { DEV_QTY, INT_QTY, PI_QTY, &qty } ;\r |
| 155 | \r |
| 156 | UNIT qty_unit =\r |
| 157 | {\r |
| 158 | UDATA (&qty_svc, (UNIT_ATTABLE), 0)\r |
| 159 | } ;\r |
| 160 | \r |
| 161 | REG qty_nlreg = { DRDATA (NLINES, qty_desc.lines, 7), PV_LEFT };\r |
| 162 | \r |
| 163 | REG qty_reg[] = /* ('alm_reg' should be similar to this except for device code related items) */\r |
| 164 | {\r |
| 165 | { ORDATA (BUF, qty_unit.buf, 8) },\r |
| 166 | { FLDATA (BUSY, dev_busy, INT_V_QTY) },\r |
| 167 | { FLDATA (DONE, dev_done, INT_V_QTY) },\r |
| 168 | { FLDATA (DISABLE, dev_disable, INT_V_QTY) },\r |
| 169 | { FLDATA (INT, int_req, INT_V_QTY) },\r |
| 170 | \r |
| 171 | { FLDATA (MDMCTL, qty_mdm, 0) },\r |
| 172 | { FLDATA (AUTODS, qty_auto, 0) },\r |
| 173 | { DRDATA (POLLS, qty_polls, 32) },\r |
| 174 | { NULL }\r |
| 175 | } ;\r |
| 176 | \r |
| 177 | MTAB qty_mod[] =\r |
| 178 | {\r |
| 179 | { UNIT_8B, 0, "7b", "7B", NULL },\r |
| 180 | { UNIT_8B, UNIT_8B, "8b", "8B", NULL },\r |
| 181 | { MTAB_XTD | MTAB_VDV, 1, NULL, "DISCONNECT",\r |
| 182 | &tmxr_dscln, NULL, &qty_desc },\r |
| 183 | { UNIT_ATT, UNIT_ATT, "connections", NULL, NULL, &qty_summary },\r |
| 184 | { MTAB_XTD | MTAB_VDV | MTAB_NMO, 1, "CONNECTIONS", NULL,\r |
| 185 | NULL, &qty_show, NULL },\r |
| 186 | { MTAB_XTD | MTAB_VDV | MTAB_NMO, 0, "STATISTICS", NULL,\r |
| 187 | NULL, &qty_show, NULL },\r |
| 188 | { MTAB_XTD | MTAB_VDV | MTAB_VAL, 0, "lines", "LINES",\r |
| 189 | &qty_setnl, NULL, &qty_nlreg },\r |
| 190 | { 0 }\r |
| 191 | } ;\r |
| 192 | \r |
| 193 | DEVICE qty_dev =\r |
| 194 | {\r |
| 195 | "QTY", &qty_unit, qty_reg, qty_mod,\r |
| 196 | 1, 10, 31, 1, 8, 8,\r |
| 197 | NULL, NULL, &qty_reset,\r |
| 198 | NULL, &qty_attach, &qty_detach,\r |
| 199 | &qty_dib, (DEV_DISABLE | DEV_DIS | DEV_NET)\r |
| 200 | };\r |
| 201 | \r |
| 202 | #define DG_RETURN( status, data ) (int32)(((status) << IOT_V_REASON) | ((data) & 0x0FFFF) )\r |
| 203 | \r |
| 204 | /*\r |
| 205 | * QTY_S_xxx QTY device status reference\r |
| 206 | * QTY_L_xxx QTY line status word reference (qty_status[])\r |
| 207 | */\r |
| 208 | \r |
| 209 | /*----------------------------------------------*/\r |
| 210 | /* QTY device status */\r |
| 211 | /*----------------------------------------------*/\r |
| 212 | \r |
| 213 | #define QTY_S_RI 0x8000 /* Receiver Interrupt */\r |
| 214 | #define QTY_S_TI 0x4000 /* Transmitter interrupt */\r |
| 215 | #define QTY_S_LMASK 0x3F00 /* line mask */\r |
| 216 | #define QTY_S_DMASK 0x00FF /* data mask (received char) */\r |
| 217 | \r |
| 218 | \r |
| 219 | \r |
| 220 | #define QTY_MASTER_ACTIVE( desc ) ( (desc)->master )\r |
| 221 | \r |
| 222 | #define QTY_LINE_EXTRACT( x ) (((x) & QTY_S_LMASK) >> 8)\r |
| 223 | \r |
| 224 | #define QTY_LINE_TX_CHAR( line ) qty_tx_chr[ ((line) % QTY_MAX) ]\r |
| 225 | #define QTY_LINE_RX_CHAR( line ) (qty_status[ (line) ] & QTY_S_DMASK)\r |
| 226 | #define QTY_UNIT_ACTIVE( unitp ) ( (unitp)->conn )\r |
| 227 | \r |
| 228 | #define QTY_LINE_BITS( line, bits ) qty_status[ (line) ] & bits\r |
| 229 | \r |
| 230 | #define QTY_LINE_SET_BIT( line, bit ) qty_status[ (line) ] |= (bit) ;\r |
| 231 | #define QTY_LINE_CLEAR_BIT( line, bit ) qty_status[ (line) ] &= ~(bit) ;\r |
| 232 | #define QTY_LINE_BIT_SET( line, bit ) (qty_status[ (line) ] & (bit))\r |
| 233 | \r |
| 234 | \r |
| 235 | /*----------------------------------------------*/\r |
| 236 | /* QTY line status */\r |
| 237 | /*----------------------------------------------*/\r |
| 238 | \r |
| 239 | #define QTY_L_RXE 0x800000 /* receiver enabled? */\r |
| 240 | #define QTY_L_RXBZ 0x400000 /* receiver busy? */\r |
| 241 | #define QTY_L_RXDN 0x200000 /* receiver done? */\r |
| 242 | #define QTY_L_TXE 0x080000 /* transmitter enabled? */\r |
| 243 | #define QTY_L_TXBZ 0x040000 /* transmitter busy? */\r |
| 244 | #define QTY_L_TXDN 0x020000 /* transmitter done? */\r |
| 245 | \r |
| 246 | #define QTY_L_BREAK 0x008000 /* BREAK character received */\r |
| 247 | #define QTY_L_RING 0x004000 /* Ring interrupt */\r |
| 248 | #define QTY_L_CD 0x002000 /* Carrier Detect */\r |
| 249 | #define QTY_L_DTR 0x001000 /* Data Terminal Ready */\r |
| 250 | /* <0x00FF = character> */\r |
| 251 | \r |
| 252 | #define QTY_L_LOOPBK 0x00010000 /* loopback mode */\r |
| 253 | #define QTY_L_OVRERR 0x00020000 /* overrun error */\r |
| 254 | #define QTY_L_FRMERR 0x00040000 /* framing error */\r |
| 255 | #define QTY_L_PARERR 0x00080000 /* parity error */\r |
| 256 | \r |
| 257 | \r |
| 258 | /* CD, CTS, DSR, RI */\r |
| 259 | /* <future> */\r |
| 260 | \r |
| 261 | #define QTY_L_MODEM 0x0080 /* <not yet used> */\r |
| 262 | #define QTY_L_TELNET 0x0040 /* <not yet used> */\r |
| 263 | #define QTY_L_AUTODIS 0x0020 /* <not yet used> */\r |
| 264 | #define QTY_L_PARITY\r |
| 265 | #define QTY_L_7BIT\r |
| 266 | #define QTY_L_BAUD /* <4 bits> */\r |
| 267 | \r |
| 268 | \r |
| 269 | #define QTY_L_DMASK 0x000FF /* data mask (always 8 bits) */\r |
| 270 | \r |
| 271 | /* Note: use at least an 'int32' for this guy */\r |
| 272 | \r |
| 273 | /*------------------------------*/\r |
| 274 | /* qty_tmxr_putc */\r |
| 275 | /*------------------------------*/\r |
| 276 | \r |
| 277 | int qty_tmxr_putc( int line, TMLN * lp, int kar )\r |
| 278 | {\r |
| 279 | int a ;\r |
| 280 | \r |
| 281 | /*----------------------------------------------*/\r |
| 282 | /* Send character to given QTY/telnet line. */\r |
| 283 | /* */\r |
| 284 | /* enter: line QTY line # */\r |
| 285 | /* lp Telnet unit def ptr */\r |
| 286 | /* kar character to send */\r |
| 287 | /* */\r |
| 288 | /* return: SCPE_OK */\r |
| 289 | /* SCPE_STALL */\r |
| 290 | /* SCPE_LOST */\r |
| 291 | /*----------------------------------------------*/\r |
| 292 | \r |
| 293 | a = tmxr_putc_ln( lp, kar ) ;\r |
| 294 | if ( a == SCPE_OK)\r |
| 295 | {\r |
| 296 | QTY_LINE_SET_BIT( line, QTY_L_TXDN )\r |
| 297 | QTY_LINE_CLEAR_BIT( line, QTY_L_TXBZ )\r |
| 298 | }\r |
| 299 | else if ( a == SCPE_STALL )\r |
| 300 | {\r |
| 301 | /*\r |
| 302 | (should we try to output the buffer\r |
| 303 | and then regroup...?)\r |
| 304 | */\r |
| 305 | QTY_LINE_SET_BIT( line, QTY_L_TXBZ )\r |
| 306 | QTY_LINE_CLEAR_BIT( line, QTY_L_TXDN )\r |
| 307 | QTY_LINE_TX_CHAR( line ) = kar ;\r |
| 308 | }\r |
| 309 | else if ( a == SCPE_LOST )\r |
| 310 | {\r |
| 311 | /* no connection - hangup? */\r |
| 312 | QTY_LINE_SET_BIT( line, QTY_L_TXBZ )\r |
| 313 | QTY_LINE_CLEAR_BIT( line, QTY_L_TXDN )\r |
| 314 | QTY_LINE_TX_CHAR( line ) = kar ;\r |
| 315 | }\r |
| 316 | return ( a ) ;\r |
| 317 | } /* end of 'qty_tmxr_putc' */\r |
| 318 | \r |
| 319 | \r |
| 320 | /*----------------------------------------------*/\r |
| 321 | /* qty_update_rcvi */\r |
| 322 | /*----------------------------------------------*/\r |
| 323 | \r |
| 324 | int qty_update_rcvi( TMXR * mp )\r |
| 325 | {\r |
| 326 | int line ;\r |
| 327 | TMLN * lp ;\r |
| 328 | int32 datum ;\r |
| 329 | int changes ;\r |
| 330 | \r |
| 331 | /*------------------------------------------------------*/\r |
| 332 | /* Search through connected telnet lines for any input */\r |
| 333 | /* activity. */\r |
| 334 | /* */\r |
| 335 | /* enter: mp master telnet qty desc ptr */\r |
| 336 | /* */\r |
| 337 | /* return: int change count (0 = none seen) */\r |
| 338 | /*------------------------------------------------------*/\r |
| 339 | \r |
| 340 | for ( changes = line = 0; line < mp->lines; ++line )\r |
| 341 | if ( (lp=mp->ldsc+line)->conn && lp->rcve )\r |
| 342 | if ( (datum=tmxr_getc_ln(lp)) )\r |
| 343 | {\r |
| 344 | if ( datum & SCPE_BREAK )\r |
| 345 | {\r |
| 346 | /* what should we do here - set QTY_L_BREAK? */\r |
| 347 | datum = datum & 0x00FF ;\r |
| 348 | }\r |
| 349 | else\r |
| 350 | {\r |
| 351 | datum = datum & 0x00FF ;\r |
| 352 | }\r |
| 353 | /* <check parity, masking, forced parity, CR/LF xlation> */\r |
| 354 | \r |
| 355 | QTY_LINE_CLEAR_BIT( line, (QTY_L_RXBZ | QTY_L_DMASK) ) ;\r |
| 356 | QTY_LINE_SET_BIT( line, (QTY_L_RXDN | datum) ) ;\r |
| 357 | ++changes ;\r |
| 358 | }\r |
| 359 | return ( changes ) ;\r |
| 360 | } /* end of 'qty_update_rcvi' */\r |
| 361 | \r |
| 362 | \r |
| 363 | /*----------------------------------------------*/\r |
| 364 | /* qty_update_xmti */\r |
| 365 | /*----------------------------------------------*/\r |
| 366 | \r |
| 367 | int qty_update_xmti( TMXR * mp )\r |
| 368 | {\r |
| 369 | int line ;\r |
| 370 | TMLN * lp ;\r |
| 371 | int changes ;\r |
| 372 | \r |
| 373 | /*------------------------------------------------------*/\r |
| 374 | /* Search through connected telnet lines for any de- */\r |
| 375 | /* ferred output activity. */\r |
| 376 | /* */\r |
| 377 | /* enter: mp master telnet qty desc ptr */\r |
| 378 | /* */\r |
| 379 | /* return: int change count (0 = none seen) */\r |
| 380 | /*------------------------------------------------------*/\r |
| 381 | \r |
| 382 | /* any TX DONE flags set\r |
| 383 | * any TX BUSY flags set\r |
| 384 | */\r |
| 385 | \r |
| 386 | for ( changes = line = 0; line < mp->lines; ++line )\r |
| 387 | if ( QTY_LINE_BIT_SET(line,QTY_L_TXBZ) )\r |
| 388 | if ( (lp=mp->ldsc+line)->conn && lp->xmte )\r |
| 389 | {\r |
| 390 | /* why are we busy? buffer was full? */\r |
| 391 | /* now some space available - try\r |
| 392 | * to stuff pending character in\r |
| 393 | * buffer and free up the world\r |
| 394 | */\r |
| 395 | qty_tmxr_putc( line, lp, QTY_LINE_TX_CHAR(line) ) ;\r |
| 396 | ++changes ;\r |
| 397 | }\r |
| 398 | return ( changes ) ;\r |
| 399 | } /* end of 'qty_update_xmti' */\r |
| 400 | \r |
| 401 | \r |
| 402 | /*----------------------------------------------*/\r |
| 403 | /* qty_update_status */\r |
| 404 | /*----------------------------------------------*/\r |
| 405 | \r |
| 406 | int qty_update_status( DIB * dibp, TMXR * tmxr_desc )\r |
| 407 | {\r |
| 408 | int line ;\r |
| 409 | int status ;\r |
| 410 | int txbusy ;\r |
| 411 | \r |
| 412 | /*----------------------------------------------*/\r |
| 413 | /* return global device status for current qty */\r |
| 414 | /* state. */\r |
| 415 | /* */\r |
| 416 | /* Receiver interrupts have higher priority */\r |
| 417 | /* than transmitter interrupts according to DG */\r |
| 418 | /* but this routine could be modified to use */\r |
| 419 | /* different priority criteria. */\r |
| 420 | /* */\r |
| 421 | /* Round-robin polling could also be used in */\r |
| 422 | /* some future release rather than starting */\r |
| 423 | /* with line 0 each time. */\r |
| 424 | /* */\r |
| 425 | /* Return <QTY_S_RI + line # + character> of */\r |
| 426 | /* first waiting character, else return */\r |
| 427 | /* <QTY_S_TI + line #> of first finished line */\r |
| 428 | /* output, else return 0. */\r |
| 429 | /* */\r |
| 430 | /* This routine does -not- clear input line */\r |
| 431 | /* BZ/DN flags; caller should do this. */\r |
| 432 | /* */\r |
| 433 | /* Global device done and busy flags are */\r |
| 434 | /* updated. */\r |
| 435 | /*----------------------------------------------*/\r |
| 436 | \r |
| 437 | for ( txbusy = status = line = 0 ; line < qty_max ; ++line )\r |
| 438 | {\r |
| 439 | txbusy |= (QTY_LINE_BIT_SET(line,QTY_L_TXBZ)) ;\r |
| 440 | if ( QTY_LINE_BIT_SET(line,QTY_L_RXDN) )\r |
| 441 | {\r |
| 442 | if ( ! status )\r |
| 443 | {\r |
| 444 | status = QTY_LINE_BITS( line, QTY_S_DMASK ) | QTY_S_RI ;\r |
| 445 | status = status | (line << 8) ;\r |
| 446 | }\r |
| 447 | break ;\r |
| 448 | }\r |
| 449 | else if ( QTY_LINE_BIT_SET(line,QTY_L_TXDN) )\r |
| 450 | {\r |
| 451 | if ( ! (status & QTY_S_RI) )\r |
| 452 | if ( ! (status & QTY_S_RI) )\r |
| 453 | {\r |
| 454 | status = QTY_S_TI ;\r |
| 455 | status = status | (line << 8) ;\r |
| 456 | }\r |
| 457 | }\r |
| 458 | }\r |
| 459 | /* <we could check each line for TX busy to set DEV_SET_BUSY)?> */\r |
| 460 | DEV_CLR_BUSY( INT_QTY ) ;\r |
| 461 | DEV_CLR_DONE( INT_QTY ) ;\r |
| 462 | if ( txbusy )\r |
| 463 | {\r |
| 464 | DEV_SET_BUSY( INT_QTY ) ;\r |
| 465 | }\r |
| 466 | if ( status & (QTY_S_RI | QTY_S_TI) )\r |
| 467 | {\r |
| 468 | DEV_SET_DONE( INT_QTY ) ;\r |
| 469 | }\r |
| 470 | DEV_UPDATE_INTR ; /* update final intr status */\r |
| 471 | return ( status ) ;\r |
| 472 | } /* end of 'qty_update_status' */\r |
| 473 | \r |
| 474 | \r |
| 475 | /*--------------------------------------------------------------*/\r |
| 476 | /* qty_attach */\r |
| 477 | /*--------------------------------------------------------------*/\r |
| 478 | \r |
| 479 | t_stat qty_attach( UNIT * unitp, char * cptr )\r |
| 480 | {\r |
| 481 | t_stat r ;\r |
| 482 | int a ;\r |
| 483 | \r |
| 484 | /* switches: A auto-disconnect\r |
| 485 | * M modem control\r |
| 486 | */\r |
| 487 | \r |
| 488 | qty_mdm = qty_auto = 0; /* modem ctl off */\r |
| 489 | r = tmxr_attach( &qty_desc, unitp, cptr ) ; /* attach QTY */\r |
| 490 | if ( r != SCPE_OK )\r |
| 491 | {\r |
| 492 | return ( r ) ; /* error! */\r |
| 493 | }\r |
| 494 | if ( sim_switches & SWMASK('M') ) /* modem control? */\r |
| 495 | {\r |
| 496 | qty_mdm = 1;\r |
| 497 | printf( "Modem control activated\n" ) ;\r |
| 498 | if ( sim_log ) fprintf( sim_log, "Modem control activated\n" ) ;\r |
| 499 | if ( sim_switches & SWMASK ('A') ) /* autodisconnect? */\r |
| 500 | {\r |
| 501 | qty_auto = 1 ;\r |
| 502 | printf( "Auto disconnect activated\n" ) ;\r |
| 503 | if ( sim_log ) fprintf( sim_log, "Auto disconnect activated\n" ) ;\r |
| 504 | }\r |
| 505 | }\r |
| 506 | qty_polls = 0 ;\r |
| 507 | for ( a = 0 ; a < QTY_MAX ; ++a )\r |
| 508 | {\r |
| 509 | /* QTY lines are always enabled - force RX and TX to 'enabled' */\r |
| 510 | qty_status[ a ] = (QTY_L_RXE | QTY_L_TXE) ;\r |
| 511 | }\r |
| 512 | sim_activate( unitp, tmxr_poll ) ;\r |
| 513 | return ( SCPE_OK ) ;\r |
| 514 | } /* end of 'qty_attach' */\r |
| 515 | \r |
| 516 | \r |
| 517 | /*--------------------------------------------------------------*/\r |
| 518 | /* qty_detach */\r |
| 519 | /*--------------------------------------------------------------*/\r |
| 520 | \r |
| 521 | t_stat qty_detach( UNIT * unitp )\r |
| 522 | {\r |
| 523 | sim_cancel( unitp ) ;\r |
| 524 | return ( tmxr_detach(&qty_desc,unitp) ) ;\r |
| 525 | } /* end of 'qty_detach' */\r |
| 526 | \r |
| 527 | \r |
| 528 | /*--------------------------------------------------------------*/\r |
| 529 | /* qty_clear */\r |
| 530 | /*--------------------------------------------------------------*/\r |
| 531 | \r |
| 532 | t_stat qty_clear( t_bool flag )\r |
| 533 | {\r |
| 534 | int line ;\r |
| 535 | \r |
| 536 | for ( line = 0 ; line < qty_max ; ++line )\r |
| 537 | {\r |
| 538 | qty_ldsc[line].xmte = 0 ;\r |
| 539 | qty_ldsc[line].rcve = 0 ;\r |
| 540 | if ( ! qty_ldsc[line].conn )\r |
| 541 | {\r |
| 542 | qty_ldsc[line].xmte = 1 ; /* set xmt enb */\r |
| 543 | qty_ldsc[line].rcve = 1 ; /* clr rcv enb */\r |
| 544 | }\r |
| 545 | }\r |
| 546 | return ( SCPE_OK ) ;\r |
| 547 | } /* end of 'qty_clear' */\r |
| 548 | \r |
| 549 | \r |
| 550 | /*----------------------------------------------*/\r |
| 551 | /* qty_common_reset */\r |
| 552 | /*----------------------------------------------*/\r |
| 553 | \r |
| 554 | t_stat qty_common_reset( DIB * dibp, UNIT * unitp, DEVICE * dptr )\r |
| 555 | {\r |
| 556 | if ((dptr->flags & DEV_DIS) == 0)\r |
| 557 | {\r |
| 558 | if (dptr == &qty_dev) alm_dev.flags |= DEV_DIS;\r |
| 559 | else qty_dev.flags |= DEV_DIS;\r |
| 560 | }\r |
| 561 | qty_clear( TRUE ) ;\r |
| 562 | DEV_CLR_BUSY( INT_QTY ) ; /* clear busy */\r |
| 563 | DEV_CLR_DONE( INT_QTY ) ; /* clear done, int */\r |
| 564 | DEV_UPDATE_INTR ;\r |
| 565 | if ( QTY_MASTER_ACTIVE(&qty_desc) )\r |
| 566 | {\r |
| 567 | sim_activate( unitp, tmxr_poll ) ;\r |
| 568 | }\r |
| 569 | else\r |
| 570 | {\r |
| 571 | sim_cancel( unitp ) ;\r |
| 572 | }\r |
| 573 | return ( SCPE_OK ) ;\r |
| 574 | } /* end of 'qty_common_reset' */\r |
| 575 | \r |
| 576 | \r |
| 577 | /*--------------------------------------------------------------*/\r |
| 578 | /* qty_reset */\r |
| 579 | /*--------------------------------------------------------------*/\r |
| 580 | \r |
| 581 | t_stat qty_reset( DEVICE * dptr )\r |
| 582 | {\r |
| 583 | return ( qty_common_reset(&qty_dib,&qty_unit,dptr) ) ;\r |
| 584 | } /* end of 'qty_reset' */\r |
| 585 | \r |
| 586 | \r |
| 587 | /* Unit service routine\r |
| 588 | \r |
| 589 | The QTY/ALM polls to see if asynchronous activity has occurred and now\r |
| 590 | needs to be processed. The polling interval is controlled by the clock\r |
| 591 | simulator, so for most environments, it is calibrated to real time.\r |
| 592 | \r |
| 593 | The simulator assumes that software enables all of the multiplexors,\r |
| 594 | or none of them.\r |
| 595 | */\r |
| 596 | \r |
| 597 | /*----------------------------------------------*/\r |
| 598 | /* qty_common_svc */\r |
| 599 | /*----------------------------------------------*/\r |
| 600 | \r |
| 601 | t_stat qty_common_svc( DIB * dibp, UNIT * unitp )\r |
| 602 | {\r |
| 603 | int line ;\r |
| 604 | int newln ;\r |
| 605 | TMLN * tmlnp ;\r |
| 606 | \r |
| 607 | ++qty_polls ; /* another time 'round the track */\r |
| 608 | newln = tmxr_poll_conn( &qty_desc ) ; /* anybody knocking at the door? */\r |
| 609 | if ( (newln >= 0) && qty_mdm )\r |
| 610 | if ( newln >= qty_max )\r |
| 611 | {\r |
| 612 | return SCPE_IERR; /* WTF - sanity check failed, over? */\r |
| 613 | }\r |
| 614 | else\r |
| 615 | {\r |
| 616 | line = newln ; /* handle modem control */\r |
| 617 | tmlnp =&qty_ldsc[ line ] ;\r |
| 618 | tmlnp->rcve = tmlnp->xmte = 1 ;\r |
| 619 | /* do QTY_LINE_ bit fiddling and state machine\r |
| 620 | * manipulation with modem control signals\r |
| 621 | */\r |
| 622 | }\r |
| 623 | \r |
| 624 | tmxr_poll_rx( &qty_desc ) ; /* poll input */\r |
| 625 | qty_update_rcvi( &qty_desc ) ; /* update receiver interrupt status */\r |
| 626 | \r |
| 627 | tmxr_poll_tx( &qty_desc ) ; /* poll output */\r |
| 628 | qty_update_xmti( &qty_desc ) ; /* update transmitter interrupt status */\r |
| 629 | \r |
| 630 | qty_update_status( dibp, &qty_desc ) ; /* update device status */\r |
| 631 | \r |
| 632 | sim_activate( unitp, tmxr_poll ) ; /* restart the bubble machine */\r |
| 633 | return ( SCPE_OK ) ;\r |
| 634 | } /* end of 'qty_common_svc' */\r |
| 635 | \r |
| 636 | \r |
| 637 | /*--------------------------------------------------------------*/\r |
| 638 | /* qty_svc */\r |
| 639 | /*--------------------------------------------------------------*/\r |
| 640 | \r |
| 641 | t_stat qty_svc( UNIT * uptr )\r |
| 642 | {\r |
| 643 | return ( qty_common_svc(&qty_dib,uptr) ) ;\r |
| 644 | } /* end of 'qty_svc' */\r |
| 645 | \r |
| 646 | \r |
| 647 | /*--------------------------------------------------------------*/\r |
| 648 | /* qty */\r |
| 649 | /*--------------------------------------------------------------*/\r |
| 650 | \r |
| 651 | int32 qty( int32 pulse, int32 code, int32 AC )\r |
| 652 | {\r |
| 653 | int32 iodata ;\r |
| 654 | int32 ioresult ;\r |
| 655 | int line ;\r |
| 656 | TMLN * tmlnp ;\r |
| 657 | int a ;\r |
| 658 | int kar ;\r |
| 659 | \r |
| 660 | /*--------------------------------------------------------------*/\r |
| 661 | /* DG 4060[-compatible] "quad" multiplexor instruction handler */\r |
| 662 | /*--------------------------------------------------------------*/\r |
| 663 | \r |
| 664 | ioresult= qty_brkio ; /* (assume returning I/O break value */\r |
| 665 | iodata = 0 ; /* (assume 16-bit Nova/Eclipse bus) */\r |
| 666 | switch ( code )\r |
| 667 | {\r |
| 668 | case ioNIO : /* <no operation> */\r |
| 669 | break ;\r |
| 670 | \r |
| 671 | case ioDIA : /* get current QTY status */\r |
| 672 | iodata = qty_update_status( &qty_dib, &qty_desc ) ;\r |
| 673 | if ( iodata & QTY_S_RI )\r |
| 674 | { /* clear line's input buffer */\r |
| 675 | QTY_LINE_CLEAR_BIT( (QTY_LINE_EXTRACT(iodata)), (QTY_L_RXBZ | QTY_L_RXDN) )\r |
| 676 | /*\r |
| 677 | character masking ;\r |
| 678 | parity checking ;\r |
| 679 | parity generating ;\r |
| 680 | */\r |
| 681 | }\r |
| 682 | qty_update_status( &qty_dib, &qty_desc ) ;\r |
| 683 | break ;\r |
| 684 | \r |
| 685 | case ioDOA : /* send character to QTY */\r |
| 686 | line = QTY_LINE_EXTRACT( AC ) ;\r |
| 687 | if ( line < qty_max )\r |
| 688 | if ( QTY_LINE_BIT_SET(line,QTY_L_TXE) )\r |
| 689 | {\r |
| 690 | /*\r |
| 691 | perform any character translation:\r |
| 692 | 7 bit/ 8 bit\r |
| 693 | parity generation\r |
| 694 | */\r |
| 695 | kar = AC & ((qty_unit.flags & UNIT_8B)? 0377: 0177) ;\r |
| 696 | /* do any parity calculations also */\r |
| 697 | \r |
| 698 | tmlnp = &qty_ldsc[ line ] ;\r |
| 699 | a = qty_tmxr_putc( line, tmlnp, kar ) ;\r |
| 700 | if ( a != SCPE_OK)\r |
| 701 | {\r |
| 702 | /* do anything at this point? */\r |
| 703 | }\r |
| 704 | qty_update_status( &qty_dib, &qty_desc ) ;\r |
| 705 | }\r |
| 706 | break ;\r |
| 707 | \r |
| 708 | case ioDIB : /* no QTY function - return bus noise in AC */\r |
| 709 | break ;\r |
| 710 | \r |
| 711 | case ioDOB : /* clear QTY output channel busy and done flag */\r |
| 712 | QTY_LINE_CLEAR_BIT( (QTY_LINE_EXTRACT(AC)), (QTY_L_TXBZ | QTY_L_TXDN) )\r |
| 713 | qty_update_status( &qty_dib, &qty_desc ) ;\r |
| 714 | break ;\r |
| 715 | \r |
| 716 | case ioDIC : /* no QTY function - return bus noise in AC */\r |
| 717 | break ;\r |
| 718 | \r |
| 719 | case ioDOC : /* no QTY function - ignore */\r |
| 720 | break ;\r |
| 721 | \r |
| 722 | case ioSKP : /* I/O skip test - should never come here */\r |
| 723 | break ;\r |
| 724 | \r |
| 725 | default :\r |
| 726 | /* <illegal I/O operation value> */\r |
| 727 | break ;\r |
| 728 | }\r |
| 729 | \r |
| 730 | switch ( pulse )\r |
| 731 | {\r |
| 732 | case iopN : /* <ignored (of course)> */\r |
| 733 | break ;\r |
| 734 | \r |
| 735 | case iopS : /* <ignored> */\r |
| 736 | break ;\r |
| 737 | \r |
| 738 | case iopP : /* <ignored> */\r |
| 739 | break ;\r |
| 740 | \r |
| 741 | case iopC :\r |
| 742 | qty_update_status( &qty_dib, &qty_desc ) ;\r |
| 743 | break ;\r |
| 744 | \r |
| 745 | default :\r |
| 746 | /* <illegal pulse value> */\r |
| 747 | break ;\r |
| 748 | }\r |
| 749 | \r |
| 750 | return ( DG_RETURN( ioresult, iodata ) ) ;\r |
| 751 | } /* end of 'qty' */\r |
| 752 | \r |
| 753 | /*--------------------------------------------------------------*/\r |
| 754 | /* qty_summary */\r |
| 755 | /*--------------------------------------------------------------*/\r |
| 756 | \r |
| 757 | t_stat qty_summary( FILE * st, UNIT * uptr, int32 val, void * desc )\r |
| 758 | {\r |
| 759 | int32 i, t ;\r |
| 760 | \r |
| 761 | for (i = t = 0 ; i < qty_desc.lines ; ++i )\r |
| 762 | if ( qty_ldsc[i].conn )\r |
| 763 | {\r |
| 764 | ++t ;\r |
| 765 | }\r |
| 766 | fprintf( st, "%d connection%s", t, ((t)? "s" : "") ) ;\r |
| 767 | return ( SCPE_OK ) ;\r |
| 768 | } /* end of 'qty_summ' */\r |
| 769 | \r |
| 770 | \r |
| 771 | /*--------------------------------------------------------------*/\r |
| 772 | /* qty_show */\r |
| 773 | /*--------------------------------------------------------------*/\r |
| 774 | \r |
| 775 | t_stat qty_show( FILE * st, UNIT * uptr, int32 val, void * desc )\r |
| 776 | {\r |
| 777 | int32 i, t ;\r |
| 778 | \r |
| 779 | for (i = t = 0 ; i < qty_desc.lines ; ++i )\r |
| 780 | if ( qty_ldsc[i].conn )\r |
| 781 | {\r |
| 782 | t = 1; \r |
| 783 | if ( val )\r |
| 784 | {\r |
| 785 | tmxr_fconns( st, &qty_ldsc[i], i ) ;\r |
| 786 | }\r |
| 787 | else\r |
| 788 | {\r |
| 789 | tmxr_fstats( st, &qty_ldsc[i], i ) ;\r |
| 790 | }\r |
| 791 | }\r |
| 792 | if ( t == 0 ) fprintf( st, "none connected\n" ) ;\r |
| 793 | return ( SCPE_OK ) ;\r |
| 794 | } /* end of 'qty_show' */\r |
| 795 | \r |
| 796 | \r |
| 797 | /*--------------------------------------------------------------*/\r |
| 798 | /* qty_setnl */\r |
| 799 | /*--------------------------------------------------------------*/\r |
| 800 | \r |
| 801 | t_stat qty_setnl( UNIT * uptr, int32 val, char * cptr, void * desc )\r |
| 802 | {\r |
| 803 | int32 newln, i, t ;\r |
| 804 | \r |
| 805 | t_stat r ;\r |
| 806 | if ( cptr == NULL )\r |
| 807 | {\r |
| 808 | return ( SCPE_ARG ) ;\r |
| 809 | }\r |
| 810 | newln = (int32) get_uint( cptr, 10, QTY_MAX, &r ) ;\r |
| 811 | if ( (r != SCPE_OK) || (newln == qty_desc.lines) )\r |
| 812 | {\r |
| 813 | return ( r ) ;\r |
| 814 | }\r |
| 815 | if ( (newln == 0) || (newln > QTY_MAX) )\r |
| 816 | {\r |
| 817 | return ( SCPE_ARG ) ;\r |
| 818 | }\r |
| 819 | if ( newln < qty_desc.lines )\r |
| 820 | {\r |
| 821 | for ( i = newln, t = 0 ; i < qty_desc.lines ; ++i )\r |
| 822 | {\r |
| 823 | t = t | qty_ldsc[i].conn ;\r |
| 824 | }\r |
| 825 | if ( t && ! get_yn("This will disconnect users; proceed [N]?", FALSE) )\r |
| 826 | {\r |
| 827 | return ( SCPE_OK ) ;\r |
| 828 | }\r |
| 829 | for ( i = newln ; i < qty_desc.lines ; ++i )\r |
| 830 | {\r |
| 831 | if ( qty_ldsc[i].conn )\r |
| 832 | { /* reset line */\r |
| 833 | tmxr_msg( qty_ldsc[i].conn, "\r\nOperator disconnected line\r\n" ) ;\r |
| 834 | tmxr_reset_ln( &qty_ldsc[i] ) ;\r |
| 835 | }\r |
| 836 | qty_clear( TRUE ) ; /* reset mux */\r |
| 837 | }\r |
| 838 | }\r |
| 839 | qty_max = qty_desc.lines = newln ;\r |
| 840 | /* Huh, I don't understand this yet...\r |
| 841 | qty_max = ((qty_dev.flags & DEV_DIS)? 0 : (qty_desc.lines / QTY_MAX)) ;\r |
| 842 | */\r |
| 843 | return ( SCPE_OK ) ;\r |
| 844 | } /* end of 'qty_setnl' */\r |
| 845 | \r |
| 846 | \r |
| 847 | /*----------------------------------------------------------------------*/\r |
| 848 | /* ALM [425x-compatible] multiplexor */\r |
| 849 | /*----------------------------------------------------------------------*/\r |
| 850 | \r |
| 851 | /*\r |
| 852 | * device code: 034 [primary],\r |
| 853 | * 074 [secondary]\r |
| 854 | * interrupt mask: B14 [000002]\r |
| 855 | * ASM mnemonic: ALM\r |
| 856 | *\r |
| 857 | * ALM [4255-4258] I/O instructions\r |
| 858 | *\r |
| 859 | * DIA read line and section requesting service\r |
| 860 | * DOA select line and section (lines 0-255, 8-bits) + rcvr/xmit\r |
| 861 | * DIB receive data\r |
| 862 | * DOB 00 transmit data\r |
| 863 | * 01 transmit BREAK\r |
| 864 | * 10 set modem control status\r |
| 865 | * 11 <ignored>\r |
| 866 | * DIC read receiver or modem status\r |
| 867 | * DOC 00 control line section and diag mode\r |
| 868 | * 01 \r |
| 869 | * 10 specify line characteristics\r |
| 870 | * 11\r |
| 871 | *\r |
| 872 | * undocumented DG "features":\r |
| 873 | *\r |
| 874 | * NIOS sets board offline\r |
| 875 | * NIOC sets board online\r |
| 876 | * Modem control signal state change can signal interrupt\r |
| 877 | * explicit line select with DOA\r |
| 878 | * implicit line select with DIA\r |
| 879 | *\r |
| 880 | * We support 64 lines maximum in this release although some ALM's could\r |
| 881 | * theoretically support up to 256.\r |
| 882 | */\r |
| 883 | \r |
| 884 | \r |
| 885 | DIB alm_dib = { DEV_ALM, INT_ALM, PI_ALM, &alm } ;\r |
| 886 | UNIT alm_unit =\r |
| 887 | {\r |
| 888 | UDATA (&alm_svc, (UNIT_ATTABLE), 0)\r |
| 889 | } ;\r |
| 890 | \r |
| 891 | REG alm_reg[] = /* ('qty_reg' should be similar to this except for device code related items) */\r |
| 892 | {\r |
| 893 | { ORDATA (BUF, alm_unit.buf, 8) },\r |
| 894 | { FLDATA (BUSY, dev_busy, INT_V_ALM) },\r |
| 895 | { FLDATA (DONE, dev_done, INT_V_ALM) },\r |
| 896 | { FLDATA (DISABLE, dev_disable, INT_V_ALM) },\r |
| 897 | { FLDATA (INT, int_req, INT_V_ALM) },\r |
| 898 | \r |
| 899 | { FLDATA (MDMCTL, qty_mdm, 0) },\r |
| 900 | { FLDATA (AUTODS, qty_auto, 0) },\r |
| 901 | { DRDATA (POLLS, qty_polls, 32) },\r |
| 902 | { NULL }\r |
| 903 | } ;\r |
| 904 | \r |
| 905 | DEVICE alm_dev =\r |
| 906 | {\r |
| 907 | "ALM", &alm_unit, alm_reg, qty_mod,\r |
| 908 | 1, 10, 31, 1, 8, 8,\r |
| 909 | NULL, NULL, &alm_reset,\r |
| 910 | NULL, &qty_attach, &qty_detach,\r |
| 911 | &alm_dib, (DEV_DISABLE | DEV_NET)\r |
| 912 | } ;\r |
| 913 | \r |
| 914 | int alm_section = -1 ; /* current line "section" (0 = RCV, 1 = XMT) */\r |
| 915 | int alm_line = -1 ; /* current line [0-63] */\r |
| 916 | int alm_diag_mode = 0 ; /* <not yet supported> */\r |
| 917 | int alm_line_mask = 0x003F ; /* maximum of 64 lines in this rev */\r |
| 918 | \r |
| 919 | \r |
| 920 | #define ALM_LINE_EXTRACT( x ) (((x) >> 1) & alm_line_mask)\r |
| 921 | #define ALM_SECT_EXTRACT( x ) ((x) & 0x0001)\r |
| 922 | \r |
| 923 | \r |
| 924 | /*--------------------------------------------------------------*/\r |
| 925 | /* alm_reset */\r |
| 926 | /*--------------------------------------------------------------*/\r |
| 927 | \r |
| 928 | t_stat alm_reset( DEVICE * dptr )\r |
| 929 | {\r |
| 930 | return ( qty_common_reset(&alm_dib,&alm_unit,dptr) ) ;\r |
| 931 | } /* end of 'alm_reset' */\r |
| 932 | \r |
| 933 | \r |
| 934 | /*--------------------------------------------------------------*/\r |
| 935 | /* alm_svc */\r |
| 936 | /*--------------------------------------------------------------*/\r |
| 937 | \r |
| 938 | t_stat alm_svc( UNIT * uptr )\r |
| 939 | {\r |
| 940 | return ( qty_common_svc(&alm_dib,uptr) ) ;\r |
| 941 | } /* end of 'alm_svc' */\r |
| 942 | \r |
| 943 | \r |
| 944 | /*--------------------------------------------------------------*/\r |
| 945 | /* alm */\r |
| 946 | /*--------------------------------------------------------------*/\r |
| 947 | \r |
| 948 | int32 alm( int32 pulse, int32 code, int32 AC )\r |
| 949 | {\r |
| 950 | int32 iodata ;\r |
| 951 | int32 ioresult ;\r |
| 952 | TMLN * tmlnp ;\r |
| 953 | int a ;\r |
| 954 | int kar ;\r |
| 955 | \r |
| 956 | /*--------------------------------------------------------------*/\r |
| 957 | /* DG 425x[-compatible] "ALM" multiplexor instruction handler */\r |
| 958 | /*--------------------------------------------------------------*/\r |
| 959 | \r |
| 960 | ioresult= qty_brkio ; /* (assume returning I/O break value */\r |
| 961 | iodata = 0 ; /* (assume 16-bit Nova/Eclipse bus) */\r |
| 962 | switch ( code )\r |
| 963 | {\r |
| 964 | case ioNIO : /* <no operation> */\r |
| 965 | break ;\r |
| 966 | \r |
| 967 | case ioDIA : /* read line and section requesting service */\r |
| 968 | iodata = qty_update_status( &alm_dib, &qty_desc ) ;\r |
| 969 | alm_line = (QTY_LINE_EXTRACT(iodata) & alm_line_mask) ;\r |
| 970 | /* (mask with 'alm_line_mask' in case ALM mask is different than QTY */\r |
| 971 | alm_section = 0 ;\r |
| 972 | if ( ! ( iodata & QTY_S_RI) )\r |
| 973 | if ( iodata & QTY_S_TI )\r |
| 974 | {\r |
| 975 | alm_section = 1 ; /* receiver quiet - transmitter done */\r |
| 976 | }\r |
| 977 | iodata = (alm_line << 1) | alm_section ;\r |
| 978 | break ;\r |
| 979 | \r |
| 980 | case ioDOA : /* set line and section */\r |
| 981 | alm_section = ALM_SECT_EXTRACT( AC ) ;\r |
| 982 | alm_line = ALM_LINE_EXTRACT( AC ) ;\r |
| 983 | break ;\r |
| 984 | \r |
| 985 | case ioDIB : /* no ALM function - return bus noise in AC */\r |
| 986 | if ( alm_line < qty_max )\r |
| 987 | {\r |
| 988 | iodata = QTY_LINE_RX_CHAR( alm_line ) ;\r |
| 989 | }\r |
| 990 | break ;\r |
| 991 | \r |
| 992 | case ioDOB : /* output and modem control functions */\r |
| 993 | switch ( (AC >> 14) & 03 )\r |
| 994 | {\r |
| 995 | case 00 : /* transmit data */\r |
| 996 | if ( alm_line < qty_max )\r |
| 997 | if ( QTY_LINE_BIT_SET(alm_line,QTY_L_TXE) )\r |
| 998 | {\r |
| 999 | /*\r |
| 1000 | perform any character translation:\r |
| 1001 | 7 bit/ 8 bit\r |
| 1002 | parity generation\r |
| 1003 | */\r |
| 1004 | kar = AC & ((alm_unit.flags & UNIT_8B)? 0377: 0177) ;\r |
| 1005 | /* do any parity calculations also */\r |
| 1006 | \r |
| 1007 | tmlnp = &qty_ldsc[ alm_line ] ;\r |
| 1008 | a = qty_tmxr_putc( alm_line, tmlnp, kar ) ;\r |
| 1009 | if ( a != SCPE_OK)\r |
| 1010 | {\r |
| 1011 | /* do anything at this point? */\r |
| 1012 | }\r |
| 1013 | qty_update_status( &alm_dib, &qty_desc ) ;\r |
| 1014 | }\r |
| 1015 | break ;\r |
| 1016 | \r |
| 1017 | case 01 : /* transmit break */\r |
| 1018 | if ( alm_line < qty_max )\r |
| 1019 | if ( QTY_LINE_BIT_SET(alm_line,QTY_L_TXE) )\r |
| 1020 | {\r |
| 1021 | tmlnp = &qty_ldsc[ alm_line ] ;\r |
| 1022 | /*\r |
| 1023 | a = qty_tmxr_putc( alm_line, tmlnp, kar ) ;\r |
| 1024 | if ( a != SCPE_OK)\r |
| 1025 | {\r |
| 1026 | }\r |
| 1027 | */\r |
| 1028 | qty_update_status( &alm_dib, &qty_desc ) ;\r |
| 1029 | }\r |
| 1030 | break ;\r |
| 1031 | \r |
| 1032 | case 02 : /* set modem control status */\r |
| 1033 | break ;\r |
| 1034 | \r |
| 1035 | case 03 : /* unused */\r |
| 1036 | break ;\r |
| 1037 | }\r |
| 1038 | break ;\r |
| 1039 | \r |
| 1040 | case ioDIC : /* get modem or receiver status */\r |
| 1041 | if ( alm_line < qty_max )\r |
| 1042 | if ( alm_section )\r |
| 1043 | {\r |
| 1044 | /* get modem section status */\r |
| 1045 | if ( qty_ldsc[ alm_line ].xmte )\r |
| 1046 | {\r |
| 1047 | iodata = 0035 ; /* set CD, CTS, DSR, MDM flags */\r |
| 1048 | }\r |
| 1049 | }\r |
| 1050 | else\r |
| 1051 | {\r |
| 1052 | /* get receiver section status */\r |
| 1053 | iodata = 0 ; /* receiver error status - no errors by default */\r |
| 1054 | }\r |
| 1055 | break ;\r |
| 1056 | \r |
| 1057 | case ioDOC : /* set line attributes */\r |
| 1058 | switch ( (AC >> 14) & 03 )\r |
| 1059 | {\r |
| 1060 | case 00 : /* control line section */\r |
| 1061 | break ;\r |
| 1062 | \r |
| 1063 | case 01 : /* unused */\r |
| 1064 | break ;\r |
| 1065 | \r |
| 1066 | case 02 : /* set line characteristics */\r |
| 1067 | break ;\r |
| 1068 | \r |
| 1069 | case 03 : /* unused */\r |
| 1070 | break ;\r |
| 1071 | }\r |
| 1072 | break ;\r |
| 1073 | \r |
| 1074 | case ioSKP : /* I/O skip test - should never come here */\r |
| 1075 | break ;\r |
| 1076 | \r |
| 1077 | default :\r |
| 1078 | /* <illegal I/O operation value> */\r |
| 1079 | break ;\r |
| 1080 | }\r |
| 1081 | \r |
| 1082 | switch ( pulse )\r |
| 1083 | {\r |
| 1084 | case iopN : /* <ignored (of course)> */\r |
| 1085 | break ;\r |
| 1086 | \r |
| 1087 | case iopS : /* set device busy\r |
| 1088 | * set all lines on board offline\r |
| 1089 | * clear each line's done\r |
| 1090 | * clear internal system\r |
| 1091 | * clear device busy\r |
| 1092 | */\r |
| 1093 | for ( a = 0 ; a < qty_max ; ++a )\r |
| 1094 | if ( 1 /* (not yet optimized) */ )\r |
| 1095 | {\r |
| 1096 | QTY_LINE_CLEAR_BIT( a, (QTY_L_RXBZ | QTY_L_RXDN | QTY_L_TXBZ | QTY_L_TXDN) ) ;\r |
| 1097 | }\r |
| 1098 | qty_update_status( &alm_dib, &qty_desc ) ;\r |
| 1099 | break ;\r |
| 1100 | \r |
| 1101 | case iopP : /* stop clock for all boards in off-line mode */\r |
| 1102 | break ;\r |
| 1103 | \r |
| 1104 | case iopC :\r |
| 1105 | for ( a = 0 ; a < qty_max ; ++a )\r |
| 1106 | if ( 1 /* (not yet optimized) */ )\r |
| 1107 | {\r |
| 1108 | QTY_LINE_CLEAR_BIT( a, (QTY_L_RXBZ | QTY_L_RXDN | QTY_L_TXBZ | QTY_L_TXDN) ) ;\r |
| 1109 | }\r |
| 1110 | qty_update_status( &alm_dib, &qty_desc ) ;\r |
| 1111 | break ;\r |
| 1112 | \r |
| 1113 | default :\r |
| 1114 | /* <illegal pulse value> */\r |
| 1115 | break ;\r |
| 1116 | }\r |
| 1117 | \r |
| 1118 | return ( DG_RETURN( ioresult, iodata ) ) ;\r |
| 1119 | } /* end of 'alm' */\r |