| 1 | /* i7094_com.c: IBM 7094 7750 communications interface simulator\r |
| 2 | \r |
| 3 | Copyright (c) 2005-2006, 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 | com 7750 controller\r |
| 27 | coml 7750 lines\r |
| 28 | \r |
| 29 | This module implements an abstract simulator for the IBM 7750 communications\r |
| 30 | computer as used by the CTSS system. The 7750 supports up to 112 lines;\r |
| 31 | the simulator supports 33. The 7750 can handle both high-speed lines, in\r |
| 32 | 6b and 12b mode, and normal terminals, in 12b mode only; the simulator \r |
| 33 | supports only terminals. The 7750 can handle many different kinds of\r |
| 34 | terminals; the simulator supports only a limited subset.\r |
| 35 | \r |
| 36 | Input is asynchronous. The 7750 sets ATN1 to signal availability of input.\r |
| 37 | When the 7094 issues a CTLRN, the 7750 gathers available input characters\r |
| 38 | into a message. The message has a 12b sequence number, followed by 12b line\r |
| 39 | number/character pairs, followed by end-of-medium (03777). Input characters\r |
| 40 | can either be control characters (bit 02000 set) or data characters. Data\r |
| 41 | characters are 1's complemented and are 8b wide: 7 data bits and 1 parity\r |
| 42 | bit (which may be 0).\r |
| 43 | \r |
| 44 | Output is synchronous. When the 7094 issues a CTLWN, the 7750 interprets\r |
| 45 | the channel output as a message. The message has a 12b line number, followed\r |
| 46 | by a 12b character count, followed by characters, followed by end-of-medium.\r |
| 47 | If bit 02000 of the line number is set, the characters are 12b wide. If\r |
| 48 | bit 01000 is set, the message is a control message. 12b characters consist\r |
| 49 | of 7 data bits, 1 parity bit, and 1 start bit. Data characters are 1's\r |
| 50 | complemented. Data character 03777 is special and causes the 7750 to\r |
| 51 | repeat the previous bit for the number of bit times specified in the next\r |
| 52 | character. This is used to generate delays for positioning characters.\r |
| 53 | \r |
| 54 | The 7750 supports flow control for output. To help the 7094 account for\r |
| 55 | usage of 7750 buffer memory, the 7750 sends 'character output completion'\r |
| 56 | messages for every 'n' characters output on a line, where n <= 31.\r |
| 57 | \r |
| 58 | Note that the simulator console is mapped in as line n+1.\r |
| 59 | */\r |
| 60 | \r |
| 61 | #include "i7094_defs.h"\r |
| 62 | #include "sim_sock.h"\r |
| 63 | #include "sim_tmxr.h"\r |
| 64 | #include <ctype.h>\r |
| 65 | \r |
| 66 | #define COM_MLINES 32 /* mux lines */\r |
| 67 | #define COM_TLINES (COM_MLINES + 1) /* total lines */\r |
| 68 | #define COM_BUFSIZ 120 /* max chan transfer */\r |
| 69 | #define COM_PKTSIZ 16384 /* character buffer */\r |
| 70 | \r |
| 71 | #define UNIT_V_2741 (TTUF_V_UF + 0) /* 2741 - ni */\r |
| 72 | #define UNIT_V_K35 (TTUF_V_UF + 1) /* KSR-35 */\r |
| 73 | #define UNIT_2741 (1 << UNIT_V_2741)\r |
| 74 | #define UNIT_K35 (1 << UNIT_V_K35)\r |
| 75 | \r |
| 76 | #define CONN u3 /* line is connected */\r |
| 77 | #define NEEDID u4 /* need to send ID */\r |
| 78 | \r |
| 79 | #define COM_INIT_POLL 8000 /* polling interval */\r |
| 80 | #define COMC_WAIT 2 /* channel delay time */\r |
| 81 | #define COML_WAIT 1000 /* char delay time */\r |
| 82 | #define COM_LBASE 4 /* start of lines */\r |
| 83 | \r |
| 84 | /* Input threads */\r |
| 85 | \r |
| 86 | #define COM_PLU 0 /* multiplexor poll */\r |
| 87 | #define COM_CIU 1 /* console input */\r |
| 88 | #define COM_CHU 2 /* channel transfer */\r |
| 89 | #define COM_SNS 3 /* sense transfer */\r |
| 90 | \r |
| 91 | /* Communications input */\r |
| 92 | \r |
| 93 | #define COMI_VALIDL 02000 /* valid line flag */\r |
| 94 | #define COMI_PARITY 00200 /* parity bit */\r |
| 95 | #define COMI_DIALUP 02001 /* dialup */\r |
| 96 | #define COMI_ENDID 02002 /* end ID */\r |
| 97 | #define COMI_INTR 02003 /* interrupt */\r |
| 98 | #define COMI_QUIT 02004 /* quit */\r |
| 99 | #define COMI_HANGUP 02005 /* hangup */\r |
| 100 | #define COMI_EOM 03777 /* end of medium */\r |
| 101 | #define COMI_COMP(x) ((uint16) (03000 + ((x) & COMI_CMAX)))\r |
| 102 | #define COMI_K35 1 /* KSR-35 ID */\r |
| 103 | #define COMI_K37 7 /* KSR-37 ID */\r |
| 104 | #define COMI_2741 8 /* 2741 ID */\r |
| 105 | #define COMI_CMAX 31 /* max chars returned */\r |
| 106 | #define COMI_BMAX 50 /* buffer max, words */\r |
| 107 | #define COMI_12BMAX ((3 * COMI_BMAX) - 1) /* last 12b char */\r |
| 108 | \r |
| 109 | /* Communications output */\r |
| 110 | \r |
| 111 | #define COMO_LIN12B 0200000000000 /* line is 12b */\r |
| 112 | #define COMO_LINCTL 0100000000000 /* control msg */\r |
| 113 | #define COMO_GETLN(x) (((uint32) ((x) >> 24)) & 0777)\r |
| 114 | #define COMO_CTLRST 0000077770000 /* control reset */\r |
| 115 | #define COMO_BITRPT 03777 /* bit repeat */\r |
| 116 | #define COMO_EOM12B 07777 /* end of medium */\r |
| 117 | #define COMO_BMAX 94 /* buffer max, words */\r |
| 118 | #define COMO_12BMAX ((3 * COMO_BMAX) - 1)\r |
| 119 | \r |
| 120 | /* Status word (60b) */\r |
| 121 | \r |
| 122 | #define COMS_PCHK 004000000000000000000 /* prog check */\r |
| 123 | #define COMS_DCHK 002000000000000000000 /* data check */\r |
| 124 | #define COMS_EXCC 001000000000000000000 /* exc cond */\r |
| 125 | #define COMS_MLNT 000040000000000000000 /* message length check */\r |
| 126 | #define COMS_CHNH 000020000000000000000 /* channel hold */\r |
| 127 | #define COMS_CHNQ 000010000000000000000 /* channel queue full */\r |
| 128 | #define COMS_ITMO 000000100000000000000 /* interface timeout */\r |
| 129 | #define COMS_DATR 000000004000000000000 /* data message ready */\r |
| 130 | #define COMS_INBF 000000002000000000000 /* input buffer free */\r |
| 131 | #define COMS_SVCR 000000001000000000000 /* service message ready */\r |
| 132 | #define COMS_PALL 000000000000000000000\r |
| 133 | #define COMS_DALL 000000000000000000000\r |
| 134 | #define COMS_EALL 000000000000000000000\r |
| 135 | #define COMS_DYN 000000007000000000000\r |
| 136 | \r |
| 137 | /* Report variables */\r |
| 138 | \r |
| 139 | #define COMR_FQ 1 /* free queue */\r |
| 140 | #define COMR_IQ 2 /* input queue */\r |
| 141 | #define COMR_OQ 4 /* output queue */\r |
| 142 | \r |
| 143 | /* List heads and entries */\r |
| 144 | \r |
| 145 | typedef struct {\r |
| 146 | uint16 head;\r |
| 147 | uint16 tail;\r |
| 148 | } LISTHD;\r |
| 149 | \r |
| 150 | typedef struct {\r |
| 151 | uint16 next;\r |
| 152 | uint16 data;\r |
| 153 | } LISTENT;\r |
| 154 | \r |
| 155 | /* The 7750 character buffer is maintained as linked lists. The lists are:\r |
| 156 | \r |
| 157 | free free list\r |
| 158 | inpq input queue\r |
| 159 | outq[ln] output queue for line ln\r |
| 160 | \r |
| 161 | The input queue has two entries for each character; the first is the\r |
| 162 | line number, the second the character. The output queues have only\r |
| 163 | one entry for each character.\r |
| 164 | \r |
| 165 | Links are done as subscripts in array com_pkt. This allows the list\r |
| 166 | headers and the queues themselves to be saved and restored. */\r |
| 167 | \r |
| 168 | uint32 com_ch = CH_E; /* saved channel */\r |
| 169 | uint32 com_enab = 0; /* 7750 enabled */\r |
| 170 | uint32 com_msgn = 0; /* next input msg num */\r |
| 171 | uint32 com_sta = 0; /* 7750 state */\r |
| 172 | uint32 com_stop = 0; /* channel stop */\r |
| 173 | uint32 com_quit = 0; /* quit code */\r |
| 174 | uint32 com_intr = 0; /* interrupt code */\r |
| 175 | uint32 com_bptr = 0; /* buffer pointer */\r |
| 176 | uint32 com_blim = 0; /* buffer count */\r |
| 177 | uint32 com_tps = 50; /* polls/second */\r |
| 178 | uint32 com_not_ret[COM_TLINES] = { 0 }; /* chars not returned */\r |
| 179 | t_uint64 com_sns = 0; /* sense word */\r |
| 180 | t_uint64 com_chob = 0; /* chan output buf */\r |
| 181 | uint32 com_chob_v = 0; /* valid flag */\r |
| 182 | t_uint64 com_buf[COM_BUFSIZ]; /* channel buffer */\r |
| 183 | LISTHD com_free; /* free list */\r |
| 184 | LISTHD com_inpq; /* input queue */\r |
| 185 | LISTHD com_outq[COM_TLINES]; /* output queue */\r |
| 186 | LISTENT com_pkt[COM_PKTSIZ]; /* character packets */\r |
| 187 | TMLN com_ldsc[COM_MLINES] = { 0 }; /* line descriptors */\r |
| 188 | TMXR com_desc = { COM_MLINES, 0, 0, com_ldsc }; /* mux descriptor */\r |
| 189 | \r |
| 190 | /* Even parity truth table */\r |
| 191 | \r |
| 192 | static const uint8 com_epar[128] = {\r |
| 193 | 0, 1, 1, 0, 1, 0, 0, 1,\r |
| 194 | 1, 0, 0, 1, 0, 1, 1, 0,\r |
| 195 | 1, 0, 0, 1, 0, 1, 1, 0,\r |
| 196 | 0, 1, 1, 0, 1, 0, 0, 1,\r |
| 197 | 1, 0, 0, 1, 0, 1, 1, 0,\r |
| 198 | 0, 1, 1, 0, 1, 0, 0, 1,\r |
| 199 | 0, 1, 1, 0, 1, 0, 0, 1,\r |
| 200 | 1, 0, 0, 1, 0, 1, 1, 0,\r |
| 201 | 1, 0, 0, 1, 0, 1, 1, 0,\r |
| 202 | 0, 1, 1, 0, 1, 0, 0, 1,\r |
| 203 | 0, 1, 1, 0, 1, 0, 0, 1,\r |
| 204 | 1, 0, 0, 1, 0, 1, 1, 0,\r |
| 205 | 0, 1, 1, 0, 1, 0, 0, 1,\r |
| 206 | 1, 0, 0, 1, 0, 1, 1, 0,\r |
| 207 | 1, 0, 0, 1, 0, 1, 1, 0,\r |
| 208 | 0, 1, 1, 0, 1, 0, 0, 1\r |
| 209 | };\r |
| 210 | \r |
| 211 | extern uint32 ch_req;\r |
| 212 | \r |
| 213 | t_stat com_chsel (uint32 ch, uint32 sel, uint32 unit);\r |
| 214 | t_stat com_chwr (uint32 ch, t_uint64 val, uint32 flags);\r |
| 215 | t_stat comi_svc (UNIT *uptr);\r |
| 216 | t_stat comc_svc (UNIT *uptr);\r |
| 217 | t_stat como_svc (UNIT *uptr);\r |
| 218 | t_stat coms_svc (UNIT *uptr);\r |
| 219 | t_stat comti_svc (UNIT *uptr);\r |
| 220 | t_stat comto_svc (UNIT *uptr);\r |
| 221 | t_stat com_reset (DEVICE *dptr);\r |
| 222 | t_stat com_attach (UNIT *uptr, char *cptr);\r |
| 223 | t_stat com_detach (UNIT *uptr);\r |
| 224 | t_stat com_summ (FILE *st, UNIT *uptr, int32 val, void *desc);\r |
| 225 | t_stat com_show (FILE *st, UNIT *uptr, int32 val, void *desc);\r |
| 226 | t_stat com_show_ctrl (FILE *st, UNIT *uptr, int32 val, void *desc);\r |
| 227 | t_stat com_show_freeq (FILE *st, UNIT *uptr, int32 val, void *desc);\r |
| 228 | t_stat com_show_inq (FILE *st, UNIT *uptr, int32 val, void *desc);\r |
| 229 | t_stat com_show_aoutq (FILE *st, UNIT *uptr, int32 val, void *desc);\r |
| 230 | t_stat com_show_outq (FILE *st, UNIT *uptr, int32 val, void *desc);\r |
| 231 | void com_reset_ln (uint32 i);\r |
| 232 | uint16 com_gethd_free (LISTHD *lh);\r |
| 233 | uint16 com_gethd (LISTHD *lh);\r |
| 234 | t_bool com_new_puttl (LISTHD *lh, uint16 val);\r |
| 235 | void com_puttl (LISTHD *lh, uint16 ent);\r |
| 236 | t_bool com_inp_msg (uint32 ln, uint16 msg);\r |
| 237 | void com_skip_outc (uint32 ln);\r |
| 238 | t_stat com_test_atn (uint32 ch);\r |
| 239 | t_uint64 com_getob (uint32 ch);\r |
| 240 | t_bool com_qdone (uint32 ch);\r |
| 241 | void com_end (uint32 ch, uint32 fl, uint32 st);\r |
| 242 | t_stat com_send_id (uint32 ln);\r |
| 243 | t_stat com_send_ccmp (uint32 ln);\r |
| 244 | t_stat com_queue_in (uint32 ln, uint32 ch);\r |
| 245 | uint32 com_queue_out (uint32 ln, uint32 *c1);\r |
| 246 | void com_set_sns (t_uint64 stat);\r |
| 247 | \r |
| 248 | /* COM data structures\r |
| 249 | \r |
| 250 | com_dev COM device descriptor\r |
| 251 | com_unit COM unit descriptor\r |
| 252 | com_reg COM register list\r |
| 253 | com_mod COM modifiers list\r |
| 254 | */\r |
| 255 | \r |
| 256 | DIB com_dib = { &com_chsel, &com_chwr };\r |
| 257 | \r |
| 258 | UNIT com_unit[] = {\r |
| 259 | { UDATA (&comi_svc, UNIT_ATTABLE, 0), COM_INIT_POLL },\r |
| 260 | { UDATA (&comti_svc, UNIT_DIS, 0), KBD_POLL_WAIT },\r |
| 261 | { UDATA (&comc_svc, UNIT_DIS, 0), COMC_WAIT },\r |
| 262 | { UDATA (&coms_svc, UNIT_DIS, 0), COMC_WAIT }\r |
| 263 | };\r |
| 264 | \r |
| 265 | REG com_reg[] = {\r |
| 266 | { FLDATA (ENABLE, com_enab, 0) },\r |
| 267 | { ORDATA (STATE, com_sta, 6) },\r |
| 268 | { ORDATA (MSGNUM, com_msgn, 12) },\r |
| 269 | { ORDATA (SNS, com_sns, 60) },\r |
| 270 | { ORDATA (CHOB, com_chob, 36) },\r |
| 271 | { FLDATA (CHOBV, com_chob_v, 0) },\r |
| 272 | { FLDATA (STOP, com_stop, 0) },\r |
| 273 | { BRDATA (BUF, com_buf, 8, 36, COM_BUFSIZ) },\r |
| 274 | { DRDATA (BPTR, com_bptr, 7), REG_RO },\r |
| 275 | { DRDATA (BLIM, com_blim, 7), REG_RO },\r |
| 276 | { BRDATA (NRET, com_not_ret, 10, 32, COM_TLINES), REG_RO + PV_LEFT },\r |
| 277 | { BRDATA (FREEQ, &com_free, 10, 16, 2) },\r |
| 278 | { BRDATA (INPQ, &com_inpq, 10, 16, 2) },\r |
| 279 | { BRDATA (OUTQ, com_outq, 10, 16, 2 * COM_TLINES) },\r |
| 280 | { BRDATA (PKTB, com_pkt, 10, 16, 2 * COM_PKTSIZ) },\r |
| 281 | { DRDATA (TTIME, com_unit[COM_CIU].wait, 24), REG_NZ + PV_LEFT },\r |
| 282 | { DRDATA (WTIME, com_unit[COM_CHU].wait, 24), REG_NZ + PV_LEFT },\r |
| 283 | { DRDATA (CHAN, com_ch, 3), REG_HRO },\r |
| 284 | { NULL }\r |
| 285 | };\r |
| 286 | \r |
| 287 | MTAB com_mod[] = {\r |
| 288 | { UNIT_ATT, UNIT_ATT, "connections", NULL, NULL, &com_summ },\r |
| 289 | { MTAB_XTD | MTAB_VDV | MTAB_NMO, 1, "CONNECTIONS", NULL,\r |
| 290 | NULL, &com_show, NULL },\r |
| 291 | { MTAB_XTD | MTAB_VDV | MTAB_NMO, 0, "STATISTICS", NULL,\r |
| 292 | NULL, &com_show, NULL },\r |
| 293 | { MTAB_XTD | MTAB_VDV | MTAB_NMO, COMR_FQ, "FREEQ", NULL,\r |
| 294 | NULL, &com_show_ctrl, 0 },\r |
| 295 | { MTAB_XTD | MTAB_VDV | MTAB_NMO, COMR_IQ, "INQ", NULL,\r |
| 296 | NULL, &com_show_ctrl, 0 },\r |
| 297 | { MTAB_XTD | MTAB_VDV | MTAB_NMO, COMR_OQ, "OUTQ", NULL,\r |
| 298 | NULL, &com_show_ctrl, 0 },\r |
| 299 | { MTAB_XTD | MTAB_VDV | MTAB_NMO, -1, "ALL", NULL,\r |
| 300 | NULL, &com_show_ctrl, 0 },\r |
| 301 | { MTAB_XTD | MTAB_VUN | MTAB_NMO, 0, "OUTQ", NULL,\r |
| 302 | NULL, &com_show_outq, 0 },\r |
| 303 | { 0 }\r |
| 304 | };\r |
| 305 | \r |
| 306 | DEVICE com_dev = {\r |
| 307 | "COM", com_unit, com_reg, com_mod,\r |
| 308 | 3, 10, 31, 1, 16, 8,\r |
| 309 | &tmxr_ex, &tmxr_dep, &com_reset,\r |
| 310 | NULL, &com_attach, &com_detach,\r |
| 311 | &com_dib, DEV_NET | DEV_DIS\r |
| 312 | };\r |
| 313 | \r |
| 314 | /* COMLL data structures\r |
| 315 | \r |
| 316 | coml_dev COML device descriptor\r |
| 317 | coml_unit COML unit descriptor\r |
| 318 | coml_reg COML register list\r |
| 319 | coml_mod COML modifiers list\r |
| 320 | */\r |
| 321 | \r |
| 322 | UNIT coml_unit[] = {\r |
| 323 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 324 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 325 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 326 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 327 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 328 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 329 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 330 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 331 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 332 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 333 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 334 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 335 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 336 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 337 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 338 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 339 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 340 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 341 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 342 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 343 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 344 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 345 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 346 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 347 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 348 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 349 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 350 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 351 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 352 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 353 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 354 | { UDATA (&como_svc, 0, 0), COML_WAIT },\r |
| 355 | { UDATA (&comto_svc, 0, 0), COML_WAIT },\r |
| 356 | };\r |
| 357 | \r |
| 358 | MTAB coml_mod[] = {\r |
| 359 | { UNIT_K35+UNIT_2741, 0 , "KSR-37", "KSR-37", NULL },\r |
| 360 | { UNIT_K35+UNIT_2741, UNIT_K35 , "KSR-35", "KSR-35", NULL },\r |
| 361 | // { UNIT_K35+UNIT_2741, UNIT_2741, "2741", "2741", NULL },\r |
| 362 | { MTAB_XTD|MTAB_VUN, 0, NULL, "DISCONNECT",\r |
| 363 | &tmxr_dscln, NULL, &com_desc },\r |
| 364 | { MTAB_XTD|MTAB_VUN|MTAB_NC, 0, "LOG", "LOG",\r |
| 365 | &tmxr_set_log, &tmxr_show_log, &com_desc },\r |
| 366 | { MTAB_XTD|MTAB_VUN|MTAB_NC, 0, NULL, "NOLOG",\r |
| 367 | &tmxr_set_nolog, NULL, &com_desc },\r |
| 368 | { 0 }\r |
| 369 | };\r |
| 370 | \r |
| 371 | REG coml_reg[] = {\r |
| 372 | { URDATA (TIME, coml_unit[0].wait, 10, 24, 0,\r |
| 373 | COM_TLINES, REG_NZ + PV_LEFT) },\r |
| 374 | { NULL }\r |
| 375 | };\r |
| 376 | \r |
| 377 | DEVICE coml_dev = {\r |
| 378 | "COML", coml_unit, coml_reg, coml_mod,\r |
| 379 | COM_TLINES, 10, 31, 1, 16, 8,\r |
| 380 | NULL, NULL, &com_reset,\r |
| 381 | NULL, NULL, NULL,\r |
| 382 | NULL, DEV_DIS\r |
| 383 | };\r |
| 384 | \r |
| 385 | /* COM: channel select */\r |
| 386 | \r |
| 387 | t_stat com_chsel (uint32 ch, uint32 sel, uint32 unit)\r |
| 388 | {\r |
| 389 | com_ch = ch; /* save channel */\r |
| 390 | if (sim_is_active (&com_unit[COM_CHU]) || /* not idle? */\r |
| 391 | sim_is_active (&com_unit[COM_SNS])) {\r |
| 392 | com_end (ch, CHINT_SEQC, 0); /* end, seq check */\r |
| 393 | return SCPE_OK;\r |
| 394 | }\r |
| 395 | \r |
| 396 | switch (sel) { /* case on select */\r |
| 397 | \r |
| 398 | case CHSL_RDS: /* read */\r |
| 399 | case CHSL_WRS: /* write */\r |
| 400 | com_sns = 0; /* clear status */\r |
| 401 | sim_activate (&com_unit[COM_CHU], com_unit[COM_CHU].wait);\r |
| 402 | break;\r |
| 403 | \r |
| 404 | case CHSL_SNS: /* sense */\r |
| 405 | sim_activate (&com_unit[COM_SNS], com_unit[COM_SNS].wait);\r |
| 406 | break;\r |
| 407 | \r |
| 408 | case CHSL_CTL: /* control */\r |
| 409 | default: /* other */\r |
| 410 | return STOP_ILLIOP;\r |
| 411 | }\r |
| 412 | \r |
| 413 | com_stop = 0; /* clear stop */\r |
| 414 | com_sta = sel; /* set initial state */\r |
| 415 | return SCPE_OK;\r |
| 416 | }\r |
| 417 | \r |
| 418 | /* Channel write, from 7909 channel program */\r |
| 419 | \r |
| 420 | t_stat com_chwr (uint32 ch, t_uint64 val, uint32 stopf)\r |
| 421 | {\r |
| 422 | if (stopf) com_stop = 1;\r |
| 423 | else {\r |
| 424 | com_chob = val; /* store data */\r |
| 425 | com_chob_v = 1; /* set valid */\r |
| 426 | }\r |
| 427 | return SCPE_OK;\r |
| 428 | }\r |
| 429 | \r |
| 430 | /* Unit service - SNS */\r |
| 431 | \r |
| 432 | t_stat coms_svc (UNIT *uptr)\r |
| 433 | {\r |
| 434 | t_uint64 dat;\r |
| 435 | \r |
| 436 | switch (com_sta) { /* case on state */\r |
| 437 | \r |
| 438 | case CHSL_SNS: /* prepare data */\r |
| 439 | com_sns &= ~COMS_DYN; /* clear dynamic flags */\r |
| 440 | if (com_free.head) com_set_sns (COMS_INBF); /* free space? */\r |
| 441 | if (com_inpq.head) com_set_sns (COMS_DATR); /* pending input? */\r |
| 442 | com_buf[0] = (com_sns >> 24) & DMASK; /* buffer is 2 words */\r |
| 443 | com_buf[1] = (com_sns << 12) & DMASK;\r |
| 444 | com_bptr = 0;\r |
| 445 | com_blim = 2;\r |
| 446 | com_sta = CHSL_SNS|CHSL_2ND; /* 2nd state */\r |
| 447 | break;\r |
| 448 | \r |
| 449 | case CHSL_SNS|CHSL_2ND: /* second state */\r |
| 450 | if (com_bptr >= com_blim) { /* end of buffer? */\r |
| 451 | ch9_set_end (com_ch, 0); /* set end */\r |
| 452 | ch_req |= REQ_CH (com_ch); /* request channel */\r |
| 453 | com_sta = CHSL_SNS|CHSL_3RD; /* 3rd state */\r |
| 454 | sim_activate (uptr, 10 * uptr->wait); /* longer wait */\r |
| 455 | return SCPE_OK;\r |
| 456 | }\r |
| 457 | dat = com_buf[com_bptr++]; /* get word */\r |
| 458 | if (!com_stop) ch9_req_rd (com_ch, dat); /* send wd to chan */\r |
| 459 | break;\r |
| 460 | \r |
| 461 | case CHSL_SNS|CHSL_3RD: /* 3rd state */\r |
| 462 | if (com_qdone (com_ch)) return SCPE_OK; /* done? exit */\r |
| 463 | com_sta = CHSL_SNS; /* repeat sequence */\r |
| 464 | break;\r |
| 465 | }\r |
| 466 | \r |
| 467 | sim_activate (uptr, uptr->wait); /* sched next */\r |
| 468 | return SCPE_OK;\r |
| 469 | }\r |
| 470 | \r |
| 471 | /* Unit service - channel program */\r |
| 472 | \r |
| 473 | t_stat comc_svc (UNIT *uptr)\r |
| 474 | {\r |
| 475 | uint32 i, j, k, ccnt, ln, uln, ent;\r |
| 476 | uint16 chr;\r |
| 477 | t_uint64 dat;\r |
| 478 | \r |
| 479 | switch (com_sta) { /* case on state */\r |
| 480 | \r |
| 481 | case CHSL_RDS: /* read start */\r |
| 482 | for (i = 0; i < COM_BUFSIZ; i++) com_buf[i] = 0; /* clear chan buf */\r |
| 483 | com_buf[0] = com_msgn; /* 1st char is msg num */\r |
| 484 | com_msgn = (com_msgn + 1) & 03777; /* incr msg num */\r |
| 485 | for (i = 1, j = 0; i < COMI_12BMAX; i++) { /* fill buffer */\r |
| 486 | ent = com_gethd_free (&com_inpq); /* get next entry */\r |
| 487 | if (ent == 0) break; /* q empty, done */\r |
| 488 | if ((i % 3) == 0) j++; /* next word? */\r |
| 489 | com_buf[j] = (com_buf[j] << 12) | /* pack data */\r |
| 490 | ((t_uint64) (com_pkt[ent].data & 07777));\r |
| 491 | }\r |
| 492 | for (k = i % 3; k < 3; k++) { /* fill with EOM */\r |
| 493 | if (k == 0) j++; /* next word? */\r |
| 494 | com_buf[j] = (com_buf[j] << 12) | COMI_EOM;\r |
| 495 | }\r |
| 496 | com_bptr = 0; /* init buf ptr */\r |
| 497 | com_blim = j + 1; /* save buf size */\r |
| 498 | com_sta = CHSL_RDS|CHSL_2ND; /* next state */\r |
| 499 | break;\r |
| 500 | \r |
| 501 | case CHSL_RDS|CHSL_2ND: /* read xmit word */\r |
| 502 | if (com_bptr >= com_blim) /* transfer done? */\r |
| 503 | com_end (com_ch, 0, CHSL_RDS|CHSL_3RD); /* end, next state */\r |
| 504 | else { /* more to do */\r |
| 505 | dat = com_buf[com_bptr++]; /* get word */\r |
| 506 | if (!com_stop) ch9_req_rd (com_ch, dat); /* give to channel */\r |
| 507 | }\r |
| 508 | break;\r |
| 509 | \r |
| 510 | case CHSL_RDS|CHSL_3RD: /* read end */\r |
| 511 | if (com_qdone (com_ch)) /* done? */\r |
| 512 | return com_test_atn (com_ch); /* test atn, exit */\r |
| 513 | com_sta = CHSL_RDS; /* repeat sequence */\r |
| 514 | break;\r |
| 515 | \r |
| 516 | case CHSL_WRS: /* write start */\r |
| 517 | for (i = 0; i < COM_BUFSIZ; i++) com_buf[i] = 0; /* clear chan buf */\r |
| 518 | com_bptr = 0; /* init buf ptr */\r |
| 519 | com_sta = CHSL_WRS|CHSL_2ND; /* next state */\r |
| 520 | ch_req |= REQ_CH (com_ch); /* request channel */\r |
| 521 | com_chob = 0; /* clr, inval buf */\r |
| 522 | com_chob_v = 0;\r |
| 523 | break;\r |
| 524 | \r |
| 525 | case CHSL_WRS|CHSL_2ND: /* write first word */\r |
| 526 | dat = com_getob (com_ch); /* get word? */\r |
| 527 | if (dat == 0777777777777) { /* turn on? */\r |
| 528 | com_enab = 1; /* enable 7750 */\r |
| 529 | com_msgn = 0; /* init message # */\r |
| 530 | com_end (com_ch, 0, CHSL_WRS|CHSL_4TH); /* end, last state */\r |
| 531 | }\r |
| 532 | else if (dat & COMO_LINCTL) { /* control message? */\r |
| 533 | ln = COMO_GETLN (dat); /* line number */\r |
| 534 | if (ln >= (COM_TLINES + COM_LBASE)) /* invalid line? */\r |
| 535 | return STOP_INVLIN;\r |
| 536 | if (dat & COMO_CTLRST) return STOP_INVMSG; /* char must be 0 */\r |
| 537 | if (ln >= COM_LBASE) com_reset_ln (ln - COM_LBASE);\r |
| 538 | com_end (com_ch, 0, CHSL_WRS|CHSL_4TH); /* end, last state */\r |
| 539 | }\r |
| 540 | else { /* data message */\r |
| 541 | ccnt = (((uint32) dat >> 12) & 07777) + 1; /* char count plus EOM */\r |
| 542 | if (dat & COMO_LIN12B) ccnt = ccnt << 1; /* 12b? double */\r |
| 543 | com_blim = (ccnt + 6 + 5) / 6; /* buffer limit */\r |
| 544 | if ((com_blim == 1) || (com_blim >= COMO_BMAX))\r |
| 545 | return STOP_INVMSG;\r |
| 546 | com_buf[com_bptr++] = dat; /* store word */\r |
| 547 | com_sta = CHSL_WRS|CHSL_3RD; /* next state */\r |
| 548 | ch_req |= REQ_CH (com_ch); /* request channel */\r |
| 549 | }\r |
| 550 | break;\r |
| 551 | \r |
| 552 | case CHSL_WRS|CHSL_3RD: /* other words */\r |
| 553 | dat = com_getob (com_ch); /* get word */\r |
| 554 | com_buf[com_bptr++] = dat; /* store word */\r |
| 555 | if (com_bptr >= com_blim) { /* transfer done? */\r |
| 556 | ln = COMO_GETLN (com_buf[0]); /* line number */\r |
| 557 | if (ln >= (COM_TLINES + COM_LBASE)) /* invalid line? */\r |
| 558 | return STOP_INVLIN;\r |
| 559 | if ((com_buf[0] & COMO_LIN12B) && /* 12b message? */\r |
| 560 | (ln >= COM_LBASE)) {\r |
| 561 | uln = ln - COM_LBASE; /* unit number */\r |
| 562 | for (i = 2, j = 0; i < COMO_12BMAX; i++) { /* unpack 12b char */\r |
| 563 | if ((i % 3) == 0) j++;\r |
| 564 | chr = (uint16) (com_buf[j] >> ((2 - (i % 3)) * 12)) & 07777;\r |
| 565 | if (chr == COMO_EOM12B) break; /* EOM? */\r |
| 566 | if (!com_new_puttl (&com_outq[uln], chr))\r |
| 567 | return STOP_NOOFREE; /* append to outq */\r |
| 568 | }\r |
| 569 | sim_activate (&coml_unit[uln], coml_unit[uln].wait);\r |
| 570 | }\r |
| 571 | com_end (com_ch, 0, CHSL_WRS|CHSL_4TH); /* end, last state */\r |
| 572 | }\r |
| 573 | else if (!com_stop) ch_req |= REQ_CH (com_ch); /* request channel */\r |
| 574 | break;\r |
| 575 | \r |
| 576 | case CHSL_WRS|CHSL_4TH: /* buffer done */\r |
| 577 | if (com_qdone (com_ch)) /* done? */\r |
| 578 | return com_test_atn (com_ch); /* test atn, exit */\r |
| 579 | com_sta = CHSL_WRS; /* repeat sequence */\r |
| 580 | break;\r |
| 581 | \r |
| 582 | default:\r |
| 583 | return SCPE_IERR;\r |
| 584 | }\r |
| 585 | \r |
| 586 | sim_activate (uptr, uptr->wait);\r |
| 587 | return SCPE_OK;\r |
| 588 | } \r |
| 589 | \r |
| 590 | /* Unit service - console receive - always running, even if device is not */\r |
| 591 | \r |
| 592 | t_stat comti_svc (UNIT *uptr)\r |
| 593 | {\r |
| 594 | int32 c;\r |
| 595 | t_stat r;\r |
| 596 | \r |
| 597 | sim_activate (uptr, uptr->wait); /* continue poll */\r |
| 598 | c = sim_poll_kbd (); /* get character */\r |
| 599 | if (c && !(c & (SCPE_BREAK|SCPE_KFLAG))) return c; /* error? */\r |
| 600 | if (!com_enab || (c & SCPE_BREAK)) return SCPE_OK; /* !enab, break? done */\r |
| 601 | if (coml_unit[COM_MLINES].NEEDID) /* ID needed? */\r |
| 602 | return com_send_id (COM_MLINES);\r |
| 603 | if ((c & SCPE_KFLAG) && ((c = c & 0177) != 0)) { /* char input? */\r |
| 604 | if (r = com_queue_in (COM_MLINES, c)) return r;\r |
| 605 | if (sim_tt_outcvt (c, TT_MODE_7P) >= 0) sim_putchar (c);\r |
| 606 | if (c == '\r') sim_putchar ('\n');\r |
| 607 | }\r |
| 608 | return com_test_atn (com_ch); /* set ATN if input */\r |
| 609 | }\r |
| 610 | \r |
| 611 | /* Unit service - receive side\r |
| 612 | \r |
| 613 | Poll all active lines for input\r |
| 614 | Poll for new connections */\r |
| 615 | \r |
| 616 | t_stat comi_svc (UNIT *uptr)\r |
| 617 | {\r |
| 618 | int32 c, ln, t;\r |
| 619 | t_stat r;\r |
| 620 | \r |
| 621 | if ((uptr->flags & UNIT_ATT) == 0) return SCPE_OK; /* attached? */\r |
| 622 | t = sim_rtcn_calb (com_tps, TMR_COM); /* calibrate */\r |
| 623 | sim_activate (uptr, t); /* continue poll */\r |
| 624 | if (!com_enab) return SCPE_OK; /* not enabled? exit */\r |
| 625 | ln = tmxr_poll_conn (&com_desc); /* look for connect */\r |
| 626 | if (ln >= 0) { /* got one? */\r |
| 627 | com_ldsc[ln].rcve = 1; /* rcv enabled */ \r |
| 628 | coml_unit[ln].CONN = 1; /* flag connected */\r |
| 629 | coml_unit[ln].NEEDID = 1; /* need ID */\r |
| 630 | }\r |
| 631 | tmxr_poll_rx (&com_desc); /* poll for input */\r |
| 632 | for (ln = 0; ln < COM_MLINES; ln++) { /* loop thru mux */\r |
| 633 | if (com_ldsc[ln].conn) { /* connected? */\r |
| 634 | if (coml_unit[ln].NEEDID) return com_send_id (ln);\r |
| 635 | c = tmxr_getc_ln (&com_ldsc[ln]); /* get char */\r |
| 636 | if (c) { /* any char? */\r |
| 637 | c = c & 0177; /* mask to 7b */\r |
| 638 | if (r = com_queue_in (ln, c)) return r; /* queue char, err? */\r |
| 639 | if (com_ldsc[ln].xmte) { /* output enabled? */\r |
| 640 | if (sim_tt_outcvt (c, TT_MODE_7P) >= 0) /* echo char */\r |
| 641 | tmxr_putc_ln (&com_ldsc[ln], c);\r |
| 642 | if (c == '\r') /* add LF after CR */\r |
| 643 | tmxr_putc_ln (&com_ldsc[ln], '\n');\r |
| 644 | tmxr_poll_tx (&com_desc); /* poll xmt */\r |
| 645 | } /* end if enabled */\r |
| 646 | } /* end if char */\r |
| 647 | } /* end if conn */\r |
| 648 | else if (coml_unit[ln].CONN) { /* not conn, was conn? */\r |
| 649 | coml_unit[ln].CONN = 0; /* clear connected */\r |
| 650 | coml_unit[ln].NEEDID = 0; /* clear need id */\r |
| 651 | if (!com_inp_msg (ln, COMI_HANGUP)) /* hangup message */\r |
| 652 | return STOP_NOIFREE;\r |
| 653 | }\r |
| 654 | } /* end for */\r |
| 655 | return com_test_atn (com_ch); /* set ATN if input */\r |
| 656 | }\r |
| 657 | \r |
| 658 | /* Unit service - console transmit */\r |
| 659 | \r |
| 660 | t_stat comto_svc (UNIT *uptr)\r |
| 661 | {\r |
| 662 | uint32 c, c1;\r |
| 663 | \r |
| 664 | if (com_outq[COM_MLINES].head == 0) /* no more characters? */\r |
| 665 | return com_send_ccmp (COM_MLINES); /* free any remaining */\r |
| 666 | c = com_queue_out (COM_MLINES, &c1); /* get character, cvt */\r |
| 667 | if (c) sim_putchar (c); /* printable? output */\r |
| 668 | if (c1) sim_putchar (c1); /* second char? output */\r |
| 669 | sim_activate (uptr, uptr->wait); /* next char */\r |
| 670 | if (com_not_ret[COM_MLINES] >= COMI_CMAX) /* completion needed? */\r |
| 671 | return com_send_ccmp (COM_MLINES); /* generate msg */\r |
| 672 | return SCPE_OK;\r |
| 673 | }\r |
| 674 | \r |
| 675 | /* Unit service - transmit side */\r |
| 676 | \r |
| 677 | t_stat como_svc (UNIT *uptr)\r |
| 678 | {\r |
| 679 | uint32 c, c1;\r |
| 680 | int32 ln = uptr - coml_unit; /* line # */\r |
| 681 | \r |
| 682 | if (com_outq[ln].head == 0) /* no more characters? */\r |
| 683 | return com_send_ccmp (ln); /* free any remaining */\r |
| 684 | if (com_ldsc[ln].conn) { /* connected? */\r |
| 685 | if (com_ldsc[ln].xmte) { /* output enabled? */\r |
| 686 | c = com_queue_out (ln, &c1); /* get character, cvt */\r |
| 687 | if (c) tmxr_putc_ln (&com_ldsc[ln], c); /* printable? output */\r |
| 688 | if (c1) tmxr_putc_ln (&com_ldsc[ln], c1); /* print second */\r |
| 689 | } /* end if */\r |
| 690 | tmxr_poll_tx (&com_desc); /* poll xmt */\r |
| 691 | sim_activate (uptr, uptr->wait); /* next char */\r |
| 692 | if (com_not_ret[ln] >= COMI_CMAX) /* completion needed? */\r |
| 693 | return com_send_ccmp (ln); /* generate msg */\r |
| 694 | } /* end if conn */\r |
| 695 | return SCPE_OK;\r |
| 696 | }\r |
| 697 | \r |
| 698 | /* Send ID sequence on input */\r |
| 699 | \r |
| 700 | t_stat com_send_id (uint32 ln)\r |
| 701 | {\r |
| 702 | com_inp_msg (ln, COMI_DIALUP); /* input message: */\r |
| 703 | if (coml_unit[ln].flags & UNIT_K35) /* dialup, ID, endID */\r |
| 704 | com_inp_msg (ln, COMI_K35);\r |
| 705 | else com_inp_msg (ln, COMI_K37);\r |
| 706 | com_inp_msg (ln, 0);\r |
| 707 | com_inp_msg (ln, 0);\r |
| 708 | com_inp_msg (ln, 0);\r |
| 709 | com_inp_msg (ln, 0);\r |
| 710 | com_inp_msg (ln, (uint16) (ln + COM_LBASE));\r |
| 711 | if (!com_inp_msg (ln, COMI_ENDID)) /* make sure there */\r |
| 712 | return STOP_NOIFREE; /* was room for msg */\r |
| 713 | coml_unit[ln].NEEDID = 0;\r |
| 714 | return SCPE_OK;\r |
| 715 | }\r |
| 716 | \r |
| 717 | /* Translate and queue input character */\r |
| 718 | \r |
| 719 | t_stat com_queue_in (uint32 ln, uint32 c)\r |
| 720 | {\r |
| 721 | uint16 out;\r |
| 722 | \r |
| 723 | if (c == com_intr) out = COMI_INTR;\r |
| 724 | else if (c == com_quit) out = COMI_QUIT;\r |
| 725 | else {\r |
| 726 | if (coml_unit[ln].flags & UNIT_K35) { /* KSR-35? */\r |
| 727 | if (islower (c)) c = toupper (c); /* convert LC to UC */\r |
| 728 | }\r |
| 729 | else c |= (com_epar[c]? COMI_PARITY: 0); /* add even parity */\r |
| 730 | out = (~c) & 0377; /* 1's complement */\r |
| 731 | }\r |
| 732 | if (!com_inp_msg (ln, out)) return STOP_NOIFREE; /* input message */\r |
| 733 | return SCPE_OK;\r |
| 734 | }\r |
| 735 | \r |
| 736 | /* Retrieve and translate output character */\r |
| 737 | \r |
| 738 | uint32 com_queue_out (uint32 ln, uint32 *c1)\r |
| 739 | {\r |
| 740 | uint32 c, ent, raw;\r |
| 741 | \r |
| 742 | *c1 = 0; /* assume non-printing */\r |
| 743 | ent = com_gethd_free (&com_outq[ln]); /* get character */\r |
| 744 | if (ent == 0) return 0; /* nothing? */\r |
| 745 | raw = com_pkt[ent].data; /* get 12b character */\r |
| 746 | com_not_ret[ln]++;\r |
| 747 | if (raw == COMO_BITRPT) { /* insert delay? */\r |
| 748 | com_skip_outc (ln);\r |
| 749 | return 0;\r |
| 750 | }\r |
| 751 | c = (~raw >> 1) & 0177; /* remove start, parity */\r |
| 752 | if (c >= 040) { /* printable? */\r |
| 753 | if (c == 0177) return 0; /* DEL? ignore */\r |
| 754 | if ((coml_unit[ln].flags & UNIT_K35) && islower (c)) /* KSR-35 LC? */\r |
| 755 | c = toupper (c); /* cvt to UC */\r |
| 756 | return c;\r |
| 757 | }\r |
| 758 | switch (c) {\r |
| 759 | \r |
| 760 | case '\t': case '\f': case '\b': case '\a': /* valid ctrls */\r |
| 761 | return c;\r |
| 762 | \r |
| 763 | case '\r': /* carriage return? */\r |
| 764 | if (coml_unit[ln].flags & UNIT_K35) /* KSR-35? */\r |
| 765 | *c1 = '\n'; /* lf after cr */\r |
| 766 | return c;\r |
| 767 | \r |
| 768 | case '\n': /* line feed? */\r |
| 769 | if (!(coml_unit[ln].flags & UNIT_K35)) { /* KSR-37? */\r |
| 770 | *c1 = '\n'; /* lf after cr */\r |
| 771 | return '\r';\r |
| 772 | }\r |
| 773 | return c; /* print lf */\r |
| 774 | \r |
| 775 | case 022: /* DC2 */\r |
| 776 | if (!(com_unit[ln].flags & UNIT_K35)) { /* KSR-37? */\r |
| 777 | com_skip_outc (ln); /* skip next */\r |
| 778 | return '\n'; /* print lf */\r |
| 779 | }\r |
| 780 | break;\r |
| 781 | \r |
| 782 | case 023: /* DC3 */\r |
| 783 | if (!(com_unit[ln].flags & UNIT_K35)) /* KSR-37? */\r |
| 784 | com_skip_outc (ln); /* skip next */\r |
| 785 | break;\r |
| 786 | }\r |
| 787 | \r |
| 788 | return 0; /* ignore others */\r |
| 789 | }\r |
| 790 | \r |
| 791 | /* Generate completion message, if needed */\r |
| 792 | \r |
| 793 | t_stat com_send_ccmp (uint32 ln)\r |
| 794 | {\r |
| 795 | uint32 t;\r |
| 796 | \r |
| 797 | if (t = com_not_ret[ln]) { /* chars not returned? */\r |
| 798 | if (t > COMI_CMAX) t = COMI_CMAX; /* limit to max */\r |
| 799 | com_not_ret[ln] -= t; /* keep count */\r |
| 800 | if (!com_inp_msg (ln, COMI_COMP (t))) /* gen completion msg */\r |
| 801 | return STOP_NOIFREE;\r |
| 802 | }\r |
| 803 | return SCPE_OK;\r |
| 804 | }\r |
| 805 | \r |
| 806 | /* Skip next char in output queue */\r |
| 807 | \r |
| 808 | void com_skip_outc (uint32 ln)\r |
| 809 | {\r |
| 810 | if (com_gethd_free (&com_outq[ln])) com_not_ret[ln]++; /* count it */\r |
| 811 | return;\r |
| 812 | }\r |
| 813 | \r |
| 814 | /* Read and validate output buffer */\r |
| 815 | \r |
| 816 | t_uint64 com_getob (uint32 ch)\r |
| 817 | {\r |
| 818 | if (com_chob_v) com_chob_v = 0; /* valid? clear */\r |
| 819 | else if (!com_stop) { /* not stopped? */\r |
| 820 | ch9_set_ioc (com_ch); /* IO check */\r |
| 821 | com_set_sns (COMS_ITMO); /* set sense bit */\r |
| 822 | }\r |
| 823 | return com_chob;\r |
| 824 | }\r |
| 825 | \r |
| 826 | /* Set attention if input pending */\r |
| 827 | \r |
| 828 | t_stat com_test_atn (uint32 ch)\r |
| 829 | {\r |
| 830 | if (com_inpq.head) ch9_set_atn (ch);\r |
| 831 | return SCPE_OK;\r |
| 832 | }\r |
| 833 | \r |
| 834 | /* Test for done */\r |
| 835 | \r |
| 836 | t_bool com_qdone (uint32 ch)\r |
| 837 | {\r |
| 838 | if (com_stop || !ch9_qconn (ch)) { /* stop or err disc? */\r |
| 839 | com_sta = 0; /* ctrl is idle */\r |
| 840 | return TRUE;\r |
| 841 | }\r |
| 842 | return FALSE;\r |
| 843 | }\r |
| 844 | \r |
| 845 | /* Channel end */\r |
| 846 | \r |
| 847 | void com_end (uint32 ch, uint32 fl, uint32 st)\r |
| 848 | {\r |
| 849 | ch9_set_end (ch, fl); /* set end */\r |
| 850 | ch_req |= REQ_CH (ch);\r |
| 851 | com_sta = st; /* next state */\r |
| 852 | return;\r |
| 853 | }\r |
| 854 | \r |
| 855 | /* List routines - remove from head and free */\r |
| 856 | \r |
| 857 | uint16 com_gethd_free (LISTHD *lh)\r |
| 858 | {\r |
| 859 | uint16 ent;\r |
| 860 | \r |
| 861 | if ((ent = com_gethd (lh)) != 0)\r |
| 862 | com_puttl (&com_free, ent);\r |
| 863 | return ent;\r |
| 864 | }\r |
| 865 | \r |
| 866 | /* Get free entry and insert at tail */\r |
| 867 | \r |
| 868 | t_bool com_new_puttl (LISTHD *lh, uint16 val)\r |
| 869 | {\r |
| 870 | uint16 ent;\r |
| 871 | \r |
| 872 | if ((ent = com_gethd (&com_free)) != 0) {\r |
| 873 | com_pkt[ent].data = val;\r |
| 874 | com_puttl (lh, ent);\r |
| 875 | return TRUE;\r |
| 876 | }\r |
| 877 | return FALSE;\r |
| 878 | }\r |
| 879 | \r |
| 880 | /* Remove from head */\r |
| 881 | \r |
| 882 | uint16 com_gethd (LISTHD *lh)\r |
| 883 | {\r |
| 884 | uint16 ent;\r |
| 885 | \r |
| 886 | if ((ent = lh->head) != 0) {\r |
| 887 | lh->head = com_pkt[ent].next;\r |
| 888 | if (lh->head == 0) lh->tail = 0;\r |
| 889 | }\r |
| 890 | else lh->tail = 0;\r |
| 891 | return ent;\r |
| 892 | }\r |
| 893 | \r |
| 894 | /* Insert at tail */\r |
| 895 | \r |
| 896 | void com_puttl (LISTHD *lh, uint16 ent)\r |
| 897 | {\r |
| 898 | if (lh->tail == 0) lh->head = ent;\r |
| 899 | else com_pkt[lh->tail].next = ent;\r |
| 900 | com_pkt[ent].next = 0;\r |
| 901 | lh->tail = ent;\r |
| 902 | return;\r |
| 903 | }\r |
| 904 | \r |
| 905 | /* Insert line and message into input queue */\r |
| 906 | \r |
| 907 | t_bool com_inp_msg (uint32 ln, uint16 msg)\r |
| 908 | {\r |
| 909 | uint16 ent1, ent2;\r |
| 910 | \r |
| 911 | if ((ent1 = com_gethd (&com_free)) != 0) { /* pkt avail? */\r |
| 912 | if ((ent2 = com_gethd (&com_free)) != 0) { /* 2nd pkt avail? */\r |
| 913 | com_pkt[ent1].data = (ln + COM_LBASE) | COMI_VALIDL; /* 1st pkt = line# */\r |
| 914 | com_pkt[ent2].data = msg; /* 2nd pkt = char */\r |
| 915 | com_puttl (&com_inpq, ent1); /* queue pkts */\r |
| 916 | com_puttl (&com_inpq, ent2);\r |
| 917 | return TRUE;\r |
| 918 | }\r |
| 919 | com_puttl (&com_free, ent1); /* free 1st */\r |
| 920 | }\r |
| 921 | return FALSE; /* failed */\r |
| 922 | }\r |
| 923 | \r |
| 924 | /* Set flag in sense */\r |
| 925 | \r |
| 926 | void com_set_sns (t_uint64 stat)\r |
| 927 | {\r |
| 928 | com_sns |= stat;\r |
| 929 | com_sns &= ~(COMS_PCHK|COMS_DCHK|COMS_EXCC);\r |
| 930 | if (com_sns & COMS_PALL) com_sns |= COMS_PCHK;\r |
| 931 | if (com_sns & COMS_DALL) com_sns |= COMS_DCHK;\r |
| 932 | if (com_sns & COMS_EALL) com_sns |= COMS_EXCC;\r |
| 933 | return;\r |
| 934 | }\r |
| 935 | \r |
| 936 | /* Reset routine */\r |
| 937 | \r |
| 938 | t_stat com_reset (DEVICE *dptr)\r |
| 939 | {\r |
| 940 | uint32 i;\r |
| 941 | \r |
| 942 | if (dptr->flags & DEV_DIS) { /* disabled? */\r |
| 943 | com_dev.flags = com_dev.flags | DEV_DIS; /* disable lines */\r |
| 944 | coml_dev.flags = coml_dev.flags | DEV_DIS;\r |
| 945 | }\r |
| 946 | else {\r |
| 947 | com_dev.flags = com_dev.flags & ~DEV_DIS; /* enable lines */\r |
| 948 | coml_dev.flags = coml_dev.flags & ~DEV_DIS;\r |
| 949 | }\r |
| 950 | sim_activate (&com_unit[COM_CIU], com_unit[COM_CIU].wait); /* console */\r |
| 951 | sim_cancel (&com_unit[COM_PLU]);\r |
| 952 | sim_cancel (&com_unit[COM_CHU]);\r |
| 953 | if (com_unit[COM_PLU].flags & UNIT_ATT) { /* master att? */\r |
| 954 | int32 t = sim_rtcn_init (com_unit[COM_PLU].wait, TMR_COM);\r |
| 955 | sim_activate (&com_unit[COM_PLU], t);\r |
| 956 | }\r |
| 957 | com_enab = 0;\r |
| 958 | com_sns = 0;\r |
| 959 | com_msgn = 0;\r |
| 960 | com_sta = 0;\r |
| 961 | com_chob = 0;\r |
| 962 | com_chob_v = 0;\r |
| 963 | com_stop = 0;\r |
| 964 | com_bptr = 0;\r |
| 965 | com_blim = 0;\r |
| 966 | for (i = 0; i < COM_BUFSIZ; i++) com_buf[i] = 0;\r |
| 967 | com_inpq.head = 0; /* init queues */\r |
| 968 | com_inpq.tail = 0;\r |
| 969 | for (i = 0; i < COM_TLINES; i++) {\r |
| 970 | com_outq[i].head = 0;\r |
| 971 | com_outq[i].tail = 0;\r |
| 972 | com_reset_ln (i);\r |
| 973 | }\r |
| 974 | com_pkt[0].next = 0; /* init free list */\r |
| 975 | for (i = 1; i < COM_PKTSIZ; i++) {\r |
| 976 | com_pkt[i].next = i + 1;\r |
| 977 | com_pkt[i].data = 0;\r |
| 978 | }\r |
| 979 | com_pkt[COM_PKTSIZ - 1].next = 0; /* end of free list */\r |
| 980 | com_free.head = 1;\r |
| 981 | com_free.tail = COM_PKTSIZ - 1;\r |
| 982 | coml_unit[COM_MLINES].CONN = 1; /* console always conn */\r |
| 983 | coml_unit[COM_MLINES].NEEDID = 1;\r |
| 984 | return SCPE_OK;\r |
| 985 | }\r |
| 986 | \r |
| 987 | /* Attach master unit */\r |
| 988 | \r |
| 989 | t_stat com_attach (UNIT *uptr, char *cptr)\r |
| 990 | {\r |
| 991 | t_stat r;\r |
| 992 | \r |
| 993 | r = tmxr_attach (&com_desc, uptr, cptr); /* attach */\r |
| 994 | if (r != SCPE_OK) return r; /* error */\r |
| 995 | sim_rtcn_init (uptr->wait, TMR_COM);\r |
| 996 | sim_activate (uptr, 100); /* quick poll */\r |
| 997 | return SCPE_OK;\r |
| 998 | }\r |
| 999 | \r |
| 1000 | /* Detach master unit */\r |
| 1001 | \r |
| 1002 | t_stat com_detach (UNIT *uptr)\r |
| 1003 | {\r |
| 1004 | uint32 i;\r |
| 1005 | t_stat r;\r |
| 1006 | \r |
| 1007 | r = tmxr_detach (&com_desc, uptr); /* detach */\r |
| 1008 | for (i = 0; i < COM_MLINES; i++) com_ldsc[i].rcve = 0; /* disable rcv */\r |
| 1009 | sim_cancel (uptr); /* stop poll */\r |
| 1010 | return r;\r |
| 1011 | }\r |
| 1012 | \r |
| 1013 | /* Show summary processor */\r |
| 1014 | \r |
| 1015 | t_stat com_summ (FILE *st, UNIT *uptr, int32 val, void *desc)\r |
| 1016 | {\r |
| 1017 | uint32 i, t;\r |
| 1018 | \r |
| 1019 | for (i = t = 0; i < COM_MLINES; i++) t = t + (com_ldsc[i].conn != 0);\r |
| 1020 | if (t == 1) fprintf (st, "1 connection");\r |
| 1021 | else fprintf (st, "%d connections", t);\r |
| 1022 | return SCPE_OK;\r |
| 1023 | }\r |
| 1024 | \r |
| 1025 | /* SHOW CONN/STAT processor */\r |
| 1026 | \r |
| 1027 | t_stat com_show (FILE *st, UNIT *uptr, int32 val, void *desc)\r |
| 1028 | {\r |
| 1029 | uint32 i, t;\r |
| 1030 | \r |
| 1031 | for (i = t = 0; i < COM_MLINES; i++) t = t + (com_ldsc[i].conn != 0);\r |
| 1032 | if (t) {\r |
| 1033 | for (i = 0; i < COM_MLINES; i++) {\r |
| 1034 | if (com_ldsc[i].conn) {\r |
| 1035 | if (val) tmxr_fconns (st, &com_ldsc[i], i);\r |
| 1036 | else tmxr_fstats (st, &com_ldsc[i], i);\r |
| 1037 | }\r |
| 1038 | }\r |
| 1039 | }\r |
| 1040 | else fprintf (st, "all disconnected\n");\r |
| 1041 | return SCPE_OK;\r |
| 1042 | }\r |
| 1043 | \r |
| 1044 | /* Reset an individual line */\r |
| 1045 | \r |
| 1046 | void com_reset_ln (uint32 ln)\r |
| 1047 | {\r |
| 1048 | while (com_gethd_free (&com_outq[ln])) ;\r |
| 1049 | com_not_ret[ln] = 0;\r |
| 1050 | sim_cancel (&coml_unit[ln]);\r |
| 1051 | if ((ln < COM_MLINES) && (com_ldsc[ln].conn == 0)) coml_unit[ln].CONN = 0;\r |
| 1052 | return;\r |
| 1053 | }\r |
| 1054 | \r |
| 1055 | /* Special show commands */\r |
| 1056 | \r |
| 1057 | uint32 com_show_qsumm (FILE *st, LISTHD *lh, char *name)\r |
| 1058 | {\r |
| 1059 | uint32 i, next;\r |
| 1060 | \r |
| 1061 | next = lh->head;\r |
| 1062 | for (i = 0; i < COM_PKTSIZ; i++) {\r |
| 1063 | if (next == 0) {\r |
| 1064 | if (i == 0) fprintf (st, "%s is empty\n", name);\r |
| 1065 | else if (i == 1) fprintf (st, "%s has 1 entry\n", name);\r |
| 1066 | else fprintf (st, "%s had %d entries\n", name, i);\r |
| 1067 | return i;\r |
| 1068 | }\r |
| 1069 | next = com_pkt[next].next;\r |
| 1070 | }\r |
| 1071 | fprintf (st, "%s is corrupt\n", name);\r |
| 1072 | return 0;\r |
| 1073 | }\r |
| 1074 | \r |
| 1075 | void com_show_char (FILE *st, uint32 ch)\r |
| 1076 | {\r |
| 1077 | uint32 c;\r |
| 1078 | \r |
| 1079 | fprintf (st, "%03o", ch);\r |
| 1080 | c = (~ch) & 0177;\r |
| 1081 | if (((ch & 07400) == 0) && (c >= 040) && (c != 0177)) fprintf (st, "[%c]", c);\r |
| 1082 | return;\r |
| 1083 | }\r |
| 1084 | \r |
| 1085 | t_stat com_show_freeq (FILE *st, UNIT *uptr, int32 val, void *desc)\r |
| 1086 | {\r |
| 1087 | com_show_qsumm (st, &com_free, "Free queue");\r |
| 1088 | return SCPE_OK;\r |
| 1089 | }\r |
| 1090 | \r |
| 1091 | t_stat com_show_inq (FILE *st, UNIT *uptr, int32 val, void *desc)\r |
| 1092 | {\r |
| 1093 | uint32 entc, ln, i, next;\r |
| 1094 | \r |
| 1095 | if (entc = com_show_qsumm (st, &com_inpq, "Input queue")) {\r |
| 1096 | for (i = 0, next = com_inpq.head; next != 0;\r |
| 1097 | i++, next = com_pkt[next].next) {\r |
| 1098 | if ((i % 4) == 0) fprintf (st, "%d:\t", i);\r |
| 1099 | ln = com_pkt[next].data;\r |
| 1100 | next = com_pkt[next].next;\r |
| 1101 | if (next == 0) {\r |
| 1102 | fprintf (st, "Line number without data\n");\r |
| 1103 | return SCPE_OK;\r |
| 1104 | }\r |
| 1105 | fprintf (st, "%d/", ln);\r |
| 1106 | com_show_char (st, com_pkt[next].data);\r |
| 1107 | fputc ((((i % 4) == 3)? '\n': '\t'), st);\r |
| 1108 | }\r |
| 1109 | if (i % 4) fputc ('\n', st);\r |
| 1110 | }\r |
| 1111 | return SCPE_OK;\r |
| 1112 | } \r |
| 1113 | \r |
| 1114 | t_stat com_show_outq (FILE *st, UNIT *uptr, int32 val, void *desc)\r |
| 1115 | {\r |
| 1116 | uint32 entc, ln, i, next;\r |
| 1117 | char name[20];\r |
| 1118 | \r |
| 1119 | ln = uptr - com_dev.units;\r |
| 1120 | sprintf (name, "Output queue %d", ln);\r |
| 1121 | if (entc = com_show_qsumm (st, &com_outq[ln], name)) {\r |
| 1122 | for (i = 0, next = com_outq[ln].head; next != 0;\r |
| 1123 | i++, next = com_pkt[next].next) {\r |
| 1124 | if ((i % 8) == 0) fprintf (st, "%d:\t", i);\r |
| 1125 | com_show_char (st, com_pkt[next].data >> 1);\r |
| 1126 | fputc ((((i % 8) == 7)? '\n': '\t'), st);\r |
| 1127 | }\r |
| 1128 | if (i % 8) fputc ('\n', st);\r |
| 1129 | }\r |
| 1130 | return SCPE_OK;\r |
| 1131 | }\r |
| 1132 | \r |
| 1133 | t_stat com_show_aoutq (FILE *st, UNIT *uptr, int32 val, void *desc)\r |
| 1134 | {\r |
| 1135 | uint32 i;\r |
| 1136 | \r |
| 1137 | for (i = 0; i < COM_TLINES; i++)\r |
| 1138 | com_show_outq (st, com_dev.units + i, 1, desc);\r |
| 1139 | return SCPE_OK;\r |
| 1140 | }\r |
| 1141 | \r |
| 1142 | t_stat com_show_ctrl (FILE *st, UNIT *uptr, int32 val, void *desc)\r |
| 1143 | {\r |
| 1144 | if (!com_enab) fprintf (st, "Controller is not initialized\n");\r |
| 1145 | if (val & COMR_FQ) com_show_freeq (st, uptr, 1, desc);\r |
| 1146 | if (val & COMR_IQ) com_show_inq (st, uptr, 1, desc);\r |
| 1147 | if (val & COMR_OQ) com_show_aoutq (st, uptr, 1, desc);\r |
| 1148 | return SCPE_OK;\r |
| 1149 | }\r |