| /* pdp1_dcs.c: PDP-1D terminal multiplexor simulator | |
| Copyright (c) 2006-2008, Robert M Supnik | |
| Permission is hereby granted, free of charge, to any person obtaining a | |
| copy of this software and associated documentation files (the "Software"), | |
| to deal in the Software without restriction, including without limitation | |
| the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
| and/or sell copies of the Software, and to permit persons to whom the | |
| Software is furnished to do so, subject to the following conditions: | |
| The above copyright notice and this permission notice shall be included in | |
| all copies or substantial portions of the Software. | |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
| ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | |
| IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
| CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| Except as contained in this notice, the name of Robert M Supnik shall not be | |
| used in advertising or otherwise to promote the sale, use or other dealings | |
| in this Software without prior written authorization from Robert M Supnik. | |
| dcs Type 630 data communications subsystem | |
| 19-Nov-2008 RMS Revised for common TMXR show routines | |
| This module implements up to 32 individual serial interfaces. | |
| */ | |
| #include "pdp1_defs.h" | |
| #include "sim_sock.h" | |
| #include "sim_tmxr.h" | |
| #define DCS_LINES 32 /* lines */ | |
| #define DCS_LINE_MASK (DCS_LINES - 1) | |
| #define DCSL_WAIT 1000 /* output wait */ | |
| #define DCS_NUMLIN dcs_desc.lines | |
| int32 dcs_sbs = 0; /* SBS level */ | |
| uint32 dcs_send = 0; /* line for send */ | |
| uint32 dcs_scan = 0; /* line for scanner */ | |
| uint8 dcs_flg[DCS_LINES]; /* line flags */ | |
| uint8 dcs_buf[DCS_LINES]; /* line bufffers */ | |
| extern int32 iosta, stop_inst; | |
| extern int32 tmxr_poll; | |
| TMLN dcs_ldsc[DCS_LINES] = { 0 }; /* line descriptors */ | |
| TMXR dcs_desc = { DCS_LINES, 0, 0, dcs_ldsc }; /* mux descriptor */ | |
| t_stat dcsi_svc (UNIT *uptr); | |
| t_stat dcso_svc (UNIT *uptr); | |
| t_stat dcs_reset (DEVICE *dptr); | |
| t_stat dcs_attach (UNIT *uptr, char *cptr); | |
| t_stat dcs_detach (UNIT *uptr); | |
| t_stat dcs_vlines (UNIT *uptr, int32 val, char *cptr, void *desc); | |
| void dcs_reset_ln (int32 ln); | |
| void dcs_scan_next (t_bool unlk); | |
| /* DCS data structures | |
| dcs_dev DCS device descriptor | |
| dcs_unit DCS unit descriptor | |
| dcs_reg DCS register list | |
| dcs_mod DCS modifiers list | |
| */ | |
| UNIT dcs_unit = { UDATA (&dcsi_svc, UNIT_ATTABLE, 0) }; | |
| REG dcs_reg[] = { | |
| { BRDATA (BUF, dcs_buf, 8, 8, DCS_LINES) }, | |
| { BRDATA (FLAGS, dcs_flg, 8, 1, DCS_LINES) }, | |
| { FLDATA (SCNF, iosta, IOS_V_DCS) }, | |
| { ORDATA (SCAN, dcs_scan, 5) }, | |
| { ORDATA (SEND, dcs_send, 5) }, | |
| { DRDATA (SBSLVL, dcs_sbs, 4), REG_HRO }, | |
| { NULL } | |
| }; | |
| MTAB dcs_mod[] = { | |
| { MTAB_XTD|MTAB_VDV, 0, "SBSLVL", "SBSLVL", | |
| &dev_set_sbs, &dev_show_sbs, (void *) &dcs_sbs }, | |
| { MTAB_XTD | MTAB_VDV, 0, "LINES", "LINES", | |
| &dcs_vlines, &tmxr_show_lines, (void *) &dcs_desc }, | |
| { MTAB_XTD | MTAB_VDV, 1, NULL, "DISCONNECT", | |
| &tmxr_dscln, NULL, (void *) &dcs_desc }, | |
| { UNIT_ATT, UNIT_ATT, "summary", NULL, | |
| NULL, &tmxr_show_summ, (void *) &dcs_desc }, | |
| { MTAB_XTD | MTAB_VDV | MTAB_NMO, 1, "CONNECTIONS", NULL, | |
| NULL, &tmxr_show_cstat, (void *) &dcs_desc }, | |
| { MTAB_XTD | MTAB_VDV | MTAB_NMO, 0, "STATISTICS", NULL, | |
| NULL, &tmxr_show_cstat, (void *) &dcs_desc }, | |
| { 0 } | |
| }; | |
| DEVICE dcs_dev = { | |
| "DCS", &dcs_unit, dcs_reg, dcs_mod, | |
| 1, 10, 31, 1, 8, 8, | |
| &tmxr_ex, &tmxr_dep, &dcs_reset, | |
| NULL, &dcs_attach, &dcs_detach, | |
| NULL, DEV_NET | DEV_DISABLE | DEV_DIS | |
| }; | |
| /* DCSL data structures | |
| dcsl_dev DCSL device descriptor | |
| dcsl_unit DCSL unit descriptor | |
| dcsl_reg DCSL register list | |
| dcsl_mod DCSL modifiers list | |
| */ | |
| UNIT dcsl_unit[] = { | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }, | |
| { UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT } | |
| }; | |
| MTAB dcsl_mod[] = { | |
| { TT_MODE, TT_MODE_UC, "UC", "UC", NULL }, | |
| { TT_MODE, TT_MODE_7B, "7b", "7B", NULL }, | |
| { TT_MODE, TT_MODE_8B, "8b", "8B", NULL }, | |
| { TT_MODE, TT_MODE_7P, "7p", "7P", NULL }, | |
| { MTAB_XTD|MTAB_VUN, 0, NULL, "DISCONNECT", | |
| &tmxr_dscln, NULL, &dcs_desc }, | |
| { MTAB_XTD|MTAB_VUN|MTAB_NC, 0, "LOG", "LOG", | |
| &tmxr_set_log, &tmxr_show_log, &dcs_desc }, | |
| { MTAB_XTD|MTAB_VUN|MTAB_NC, 0, NULL, "NOLOG", | |
| &tmxr_set_nolog, NULL, &dcs_desc }, | |
| { 0 } | |
| }; | |
| REG dcsl_reg[] = { | |
| { URDATA (TIME, dcsl_unit[0].wait, 10, 24, 0, | |
| DCS_LINES, REG_NZ + PV_LEFT) }, | |
| { NULL } | |
| }; | |
| DEVICE dcsl_dev = { | |
| "DCSL", dcsl_unit, dcsl_reg, dcsl_mod, | |
| DCS_LINES, 10, 31, 1, 8, 8, | |
| NULL, NULL, &dcs_reset, | |
| NULL, NULL, NULL, | |
| NULL, DEV_DIS | |
| }; | |
| /* DCS IOT routine */ | |
| int32 dcs (int32 inst, int32 dev, int32 dat) | |
| { | |
| int32 pls = (inst >> 6) & 077; | |
| if (dcs_dev.flags & DEV_DIS) /* disabled? */ | |
| return (stop_inst << IOT_V_REASON) | dat; /* illegal inst */ | |
| if (pls & 020) /* pulse 20? clr IO */ | |
| dat = 0; | |
| switch (pls & 057) { /* case IR<6,8:11> */ | |
| case 000: /* RCH */ | |
| dat |= dcs_buf[dcs_scan]; /* return line buf */ | |
| dcs_flg[dcs_scan] = 0; /* clr line flag */ | |
| break; | |
| case 001: /* RRC */ | |
| dat |= dcs_scan; /* return line num */ | |
| break; | |
| case 010: /* RCC */ | |
| dat |= dcs_buf[dcs_scan]; /* return line buf */ | |
| dcs_flg[dcs_scan] = 0; /* clr line flag */ | |
| /* fall through */ | |
| case 011: /* RSC */ | |
| dcs_scan_next (TRUE); /* unlock scanner */ | |
| break; | |
| case 040: /* TCB */ | |
| dcs_buf[dcs_send] = dat & 0377; /* load buffer */ | |
| dcs_flg[dcs_send] = 0; /* clr line flag */ | |
| sim_activate (&dcsl_unit[dcs_send], dcsl_unit[dcs_send].wait); | |
| break; | |
| case 041: /* SSB */ | |
| dcs_send = dat & DCS_LINE_MASK; /* load line num */ | |
| break; | |
| case 050: /* TCC */ | |
| dcs_buf[dcs_scan] = dat & 0377; /* load buffer */ | |
| dcs_flg[dcs_scan] = 0; /* clr line flag */ | |
| sim_activate (&dcsl_unit[dcs_scan], dcsl_unit[dcs_scan].wait); | |
| dcs_scan_next (TRUE); /* unlock scanner */ | |
| break; | |
| default: | |
| return (stop_inst << IOT_V_REASON) | dat; /* illegal inst */ | |
| } /* end case */ | |
| return dat; | |
| } | |
| /* Unit service - receive side | |
| Poll all active lines for input | |
| Poll for new connections | |
| */ | |
| t_stat dcsi_svc (UNIT *uptr) | |
| { | |
| int32 ln, c, out; | |
| if ((uptr->flags & UNIT_ATT) == 0) /* attached? */ | |
| return SCPE_OK; | |
| if (dcs_dev.flags & DEV_DIS) | |
| return SCPE_OK; | |
| sim_activate (uptr, tmxr_poll); /* continue poll */ | |
| ln = tmxr_poll_conn (&dcs_desc); /* look for connect */ | |
| if (ln >= 0) { /* got one? */ | |
| dcs_ldsc[ln].rcve = 1; /* set rcv enable */ | |
| } | |
| tmxr_poll_rx (&dcs_desc); /* poll for input */ | |
| for (ln = 0; ln < DCS_NUMLIN; ln++) { /* loop thru lines */ | |
| if (dcs_ldsc[ln].conn) { /* connected? */ | |
| if (c = tmxr_getc_ln (&dcs_ldsc[ln])) { /* get char */ | |
| if (c & SCPE_BREAK) /* break? */ | |
| c = 0; | |
| else c = sim_tt_inpcvt (c, TT_GET_MODE (dcsl_unit[ln].flags)|TTUF_KSR); | |
| dcs_buf[ln] = c; /* save char */ | |
| dcs_flg[ln] = 1; /* set line flag */ | |
| dcs_scan_next (FALSE); /* kick scanner */ | |
| out = sim_tt_outcvt (c & 0177, TT_GET_MODE (dcsl_unit[ln].flags)); | |
| if (out >= 0) { | |
| tmxr_putc_ln (&dcs_ldsc[ln], out); /* echo char */ | |
| tmxr_poll_tx (&dcs_desc); /* poll xmt */ | |
| } | |
| } | |
| } | |
| else dcs_ldsc[ln].rcve = 0; /* disconnected */ | |
| } /* end for */ | |
| return SCPE_OK; | |
| } | |
| /* Unit service - transmit side */ | |
| t_stat dcso_svc (UNIT *uptr) | |
| { | |
| int32 c; | |
| uint32 ln = uptr - dcsl_unit; /* line # */ | |
| if (dcs_dev.flags & DEV_DIS) | |
| return SCPE_OK; | |
| if (dcs_ldsc[ln].conn) { /* connected? */ | |
| if (dcs_ldsc[ln].xmte) { /* xmt enabled? */ | |
| c = sim_tt_outcvt (dcs_buf[ln] & 0177, TT_GET_MODE (uptr->flags)); | |
| if (c >= 0) /* output char */ | |
| tmxr_putc_ln (&dcs_ldsc[ln], c); | |
| tmxr_poll_tx (&dcs_desc); /* poll xmt */ | |
| } | |
| else { /* buf full */ | |
| tmxr_poll_tx (&dcs_desc); /* poll xmt */ | |
| sim_activate (uptr, uptr->wait); /* reschedule */ | |
| return SCPE_OK; | |
| } | |
| } | |
| dcs_flg[ln] = 1; /* set line flag */ | |
| dcs_scan_next (FALSE); /* kick scanner */ | |
| return SCPE_OK; | |
| } | |
| /* Kick scanner */ | |
| void dcs_scan_next (t_bool unlk) | |
| { | |
| int32 i; | |
| if (unlk) /* unlock? */ | |
| iosta &= ~IOS_DCS; | |
| else if (iosta & IOS_DCS) /* no, locked? */ | |
| return; | |
| for (i = 0; i < DCS_LINES; i++) { /* scan flags */ | |
| dcs_scan = (dcs_scan + 1) & DCS_LINE_MASK; /* next flag */ | |
| if (dcs_flg[dcs_scan] != 0) { /* flag set? */ | |
| iosta |= IOS_DCS; /* lock scanner */ | |
| dev_req_int (dcs_sbs); /* request intr */ | |
| return; | |
| } | |
| } | |
| return; | |
| } | |
| /* Reset routine */ | |
| t_stat dcs_reset (DEVICE *dptr) | |
| { | |
| int32 i; | |
| if (dcs_dev.flags & DEV_DIS) /* master disabled? */ | |
| dcsl_dev.flags = dcsl_dev.flags | DEV_DIS; /* disable lines */ | |
| else dcsl_dev.flags = dcsl_dev.flags & ~DEV_DIS; | |
| if (dcs_unit.flags & UNIT_ATT) /* master att? */ | |
| sim_activate_abs (&dcs_unit, tmxr_poll); /* activate */ | |
| else sim_cancel (&dcs_unit); /* else stop */ | |
| for (i = 0; i < DCS_LINES; i++) /* reset lines */ | |
| dcs_reset_ln (i); | |
| dcs_send = 0; | |
| dcs_scan = 0; | |
| iosta &= ~IOS_DCS; /* clr intr req */ | |
| return SCPE_OK; | |
| } | |
| /* Attach master unit */ | |
| t_stat dcs_attach (UNIT *uptr, char *cptr) | |
| { | |
| t_stat r; | |
| r = tmxr_attach (&dcs_desc, uptr, cptr); /* attach */ | |
| if (r != SCPE_OK) /* error */ | |
| return r; | |
| sim_activate_abs (uptr, tmxr_poll); /* start poll */ | |
| return SCPE_OK; | |
| } | |
| /* Detach master unit */ | |
| t_stat dcs_detach (UNIT *uptr) | |
| { | |
| int32 i; | |
| t_stat r; | |
| r = tmxr_detach (&dcs_desc, uptr); /* detach */ | |
| for (i = 0; i < DCS_LINES; i++) /* disable rcv */ | |
| dcs_ldsc[i].rcve = 0; | |
| sim_cancel (uptr); /* stop poll */ | |
| return r; | |
| } | |
| /* Change number of lines */ | |
| t_stat dcs_vlines (UNIT *uptr, int32 val, char *cptr, void *desc) | |
| { | |
| int32 newln, i, t; | |
| t_stat r; | |
| if (cptr == NULL) | |
| return SCPE_ARG; | |
| newln = get_uint (cptr, 10, DCS_LINES, &r); | |
| if ((r != SCPE_OK) || (newln == DCS_NUMLIN)) | |
| return r; | |
| if (newln == 0) | |
| return SCPE_ARG; | |
| if (newln < DCS_LINES) { | |
| for (i = newln, t = 0; i < DCS_NUMLIN; i++) | |
| t = t | dcs_ldsc[i].conn; | |
| if (t && !get_yn ("This will disconnect users; proceed [N]?", FALSE)) | |
| return SCPE_OK; | |
| for (i = newln; i < DCS_NUMLIN; i++) { | |
| if (dcs_ldsc[i].conn) { | |
| tmxr_linemsg (&dcs_ldsc[i], "\r\nOperator disconnected line\r\n"); | |
| tmxr_reset_ln (&dcs_ldsc[i]); /* reset line */ | |
| } | |
| dcsl_unit[i].flags = dcsl_unit[i].flags | UNIT_DIS; | |
| dcs_reset_ln (i); | |
| } | |
| } | |
| else { | |
| for (i = DCS_NUMLIN; i < newln; i++) { | |
| dcsl_unit[i].flags = dcsl_unit[i].flags & ~UNIT_DIS; | |
| dcs_reset_ln (i); | |
| } | |
| } | |
| DCS_NUMLIN = newln; | |
| return SCPE_OK; | |
| } | |
| /* Reset an individual line */ | |
| void dcs_reset_ln (int32 ln) | |
| { | |
| sim_cancel (&dcsl_unit[ln]); | |
| dcs_buf[ln] = 0; | |
| dcs_flg[ln] = 0; | |
| return; | |
| } |