| /* pdp8_ttx.c: PDP-8 additional terminals simulator | |
| Copyright (c) 1993-2013, 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. | |
| ttix,ttox PT08/KL8JA terminal input/output | |
| 11-Oct-13 RMS Poll TTIX immediately to pick up initial connect (Mark Pizzolato) | |
| 18-Apr-12 RMS Revised to use clock coscheduling | |
| 19-Nov-08 RMS Revised for common TMXR show routines | |
| 07-Jun-06 RMS Added UNIT_IDLE flag | |
| 06-Jul-06 RMS Fixed bug in DETACH routine | |
| 22-Nov-05 RMS Revised for new terminal processing routines | |
| 29-Jun-05 RMS Added SET TTOXn DISCONNECT | |
| Fixed bug in SET LOG/NOLOG | |
| 21-Jun-05 RMS Fixed bug in SHOW CONN/STATS | |
| 05-Jan-04 RMS Revised for tmxr library changes | |
| 09-May-03 RMS Added network device flag | |
| 25-Apr-03 RMS Revised for extended file support | |
| 22-Dec-02 RMS Added break support | |
| 02-Nov-02 RMS Added 7B/8B support | |
| 04-Oct-02 RMS Added DIB, device number support | |
| 22-Aug-02 RMS Updated for changes to sim_tmxr.c | |
| 06-Jan-02 RMS Added device enable/disable support | |
| 30-Dec-01 RMS Complete rebuild | |
| 30-Nov-01 RMS Added extended SET/SHOW support | |
| This module implements four individual serial interfaces similar in function | |
| to the console. These interfaces are mapped to Telnet based connections as | |
| though they were the four lines of a terminal multiplexor. The connection | |
| polling mechanism is superimposed onto the keyboard of the first interface. | |
| */ | |
| #include "pdp8_defs.h" | |
| #include "sim_sock.h" | |
| #include "sim_tmxr.h" | |
| #include <ctype.h> | |
| #define TTX_LINES 4 | |
| #define TTX_MASK (TTX_LINES - 1) | |
| #define TTX_GETLN(x) (((x) >> 4) & TTX_MASK) | |
| extern int32 int_req, int_enable, dev_done, stop_inst; | |
| extern int32 tmxr_poll; | |
| uint8 ttix_buf[TTX_LINES] = { 0 }; /* input buffers */ | |
| uint8 ttox_buf[TTX_LINES] = { 0 }; /* output buffers */ | |
| int32 ttx_tps = 100; /* polls per second */ | |
| TMLN ttx_ldsc[TTX_LINES] = { {0} }; /* line descriptors */ | |
| TMXR ttx_desc = { TTX_LINES, 0, 0, ttx_ldsc }; /* mux descriptor */ | |
| DEVICE ttix_dev, ttox_dev; | |
| int32 ttix (int32 IR, int32 AC); | |
| int32 ttox (int32 IR, int32 AC); | |
| t_stat ttix_svc (UNIT *uptr); | |
| t_stat ttix_reset (DEVICE *dptr); | |
| t_stat ttox_svc (UNIT *uptr); | |
| t_stat ttox_reset (DEVICE *dptr); | |
| t_stat ttx_attach (UNIT *uptr, char *cptr); | |
| t_stat ttx_detach (UNIT *uptr); | |
| void ttx_enbdis (int32 dis); | |
| /* TTIx data structures | |
| ttix_dev TTIx device descriptor | |
| ttix_unit TTIx unit descriptor | |
| ttix_reg TTIx register list | |
| ttix_mod TTIx modifiers list | |
| */ | |
| DIB ttix_dib = { DEV_KJ8, 8, | |
| { &ttix, &ttox, &ttix, &ttox, &ttix, &ttox, &ttix, &ttox } }; | |
| UNIT ttix_unit = { UDATA (&ttix_svc, UNIT_IDLE|UNIT_ATTABLE, 0), SERIAL_IN_WAIT }; | |
| REG ttix_reg[] = { | |
| { BRDATAD (BUF, ttix_buf, 8, 8, TTX_LINES, "input buffer, lines 0 to 3") }, | |
| { GRDATAD (DONE, dev_done, 8, TTX_LINES, INT_V_TTI1, "device done flag (line 0 rightmost)") }, | |
| { GRDATAD (ENABLE, int_enable, 8, TTX_LINES, INT_V_TTI1, "interrupt enable flag") }, | |
| { GRDATAD (INT, int_req, 8, TTX_LINES, INT_V_TTI1, "interrupt pending flag") }, | |
| { DRDATAD (TIME, ttix_unit.wait, 24, "initial polling interval"), REG_NZ + PV_LEFT }, | |
| { DRDATAD (TPS, ttx_tps, 10, "polls per second after calibration"), REG_NZ + PV_LEFT }, | |
| { ORDATA (DEVNUM, ttix_dib.dev, 6), REG_HRO }, | |
| { NULL } | |
| }; | |
| MTAB ttix_mod[] = { | |
| { UNIT_ATT, UNIT_ATT, "summary", NULL, | |
| NULL, &tmxr_show_summ, (void *) &ttx_desc }, | |
| { MTAB_XTD | MTAB_VDV, 1, NULL, "DISCONNECT", | |
| &tmxr_dscln, NULL, (void *) &ttx_desc }, | |
| { MTAB_XTD | MTAB_VDV | MTAB_NMO, 1, "CONNECTIONS", NULL, | |
| NULL, &tmxr_show_cstat, (void *) &ttx_desc }, | |
| { MTAB_XTD | MTAB_VDV | MTAB_NMO, 0, "STATISTICS", NULL, | |
| NULL, &tmxr_show_cstat, (void *) &ttx_desc }, | |
| { MTAB_XTD|MTAB_VDV, 0, "DEVNO", "DEVNO", | |
| &set_dev, &show_dev, NULL }, | |
| { 0 } | |
| }; | |
| /* debugging bitmaps */ | |
| #define DBG_XMT TMXR_DBG_XMT /* display Transmitted Data */ | |
| #define DBG_RCV TMXR_DBG_RCV /* display Received Data */ | |
| #define DBG_RET TMXR_DBG_RET /* display Returned Received Data */ | |
| #define DBG_CON TMXR_DBG_CON /* display connection activities */ | |
| #define DBG_TRC TMXR_DBG_TRC /* display trace routine calls */ | |
| DEBTAB ttx_debug[] = { | |
| {"XMT", DBG_XMT}, | |
| {"RCV", DBG_RCV}, | |
| {"RET", DBG_RET}, | |
| {"CON", DBG_CON}, | |
| {"TRC", DBG_TRC}, | |
| {0} | |
| }; | |
| DEVICE ttix_dev = { | |
| "TTIX", &ttix_unit, ttix_reg, ttix_mod, | |
| 1, 10, 31, 1, 8, 8, | |
| &tmxr_ex, &tmxr_dep, &ttix_reset, | |
| NULL, &ttx_attach, &ttx_detach, | |
| &ttix_dib, DEV_MUX | DEV_DISABLE | DEV_DEBUG, | |
| 0, ttx_debug | |
| }; | |
| /* TTOx data structures | |
| ttox_dev TTOx device descriptor | |
| ttox_unit TTOx unit descriptor | |
| ttox_reg TTOx register list | |
| */ | |
| UNIT ttox_unit[] = { | |
| { UDATA (&ttox_svc, TT_MODE_UC, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&ttox_svc, TT_MODE_UC, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&ttox_svc, TT_MODE_UC, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&ttox_svc, TT_MODE_UC, 0), SERIAL_OUT_WAIT } | |
| }; | |
| REG ttox_reg[] = { | |
| { BRDATAD (BUF, ttox_buf, 8, 8, TTX_LINES, "last data item processed, lines 0 to 3") }, | |
| { GRDATAD (DONE, dev_done, 8, TTX_LINES, INT_V_TTO1, "device done flag (line 0 rightmost)") }, | |
| { GRDATAD (ENABLE, int_enable, 8, TTX_LINES, INT_V_TTO1, "interrupt enable flag") }, | |
| { GRDATAD (INT, int_req, 8, TTX_LINES, INT_V_TTO1, "interrupt pending flag") }, | |
| { URDATAD (TIME, ttox_unit[0].wait, 10, 24, 0, | |
| TTX_LINES, PV_LEFT, "line from I/O initiation to interrupt, lines 0 to 3") }, | |
| { NULL } | |
| }; | |
| MTAB ttox_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, &ttx_desc }, | |
| { MTAB_XTD|MTAB_VUN|MTAB_NC, 0, "LOG", "LOG", | |
| &tmxr_set_log, &tmxr_show_log, &ttx_desc }, | |
| { MTAB_XTD|MTAB_VUN|MTAB_NC, 0, NULL, "NOLOG", | |
| &tmxr_set_nolog, NULL, &ttx_desc }, | |
| { 0 } | |
| }; | |
| DEVICE ttox_dev = { | |
| "TTOX", ttox_unit, ttox_reg, ttox_mod, | |
| 4, 10, 31, 1, 8, 8, | |
| NULL, NULL, &ttox_reset, | |
| NULL, NULL, NULL, | |
| NULL, DEV_DISABLE | DEV_DEBUG, | |
| 0, ttx_debug | |
| }; | |
| /* Terminal input: IOT routine */ | |
| int32 ttix (int32 inst, int32 AC) | |
| { | |
| int32 pulse = inst & 07; /* IOT pulse */ | |
| int32 ln = TTX_GETLN (inst); /* line # */ | |
| int32 itti = (INT_TTI1 << ln); /* rx intr */ | |
| int32 itto = (INT_TTO1 << ln); /* tx intr */ | |
| switch (pulse) { /* case IR<9:11> */ | |
| case 0: /* KCF */ | |
| dev_done = dev_done & ~itti; /* clear flag */ | |
| int_req = int_req & ~itti; | |
| break; | |
| case 1: /* KSF */ | |
| return (dev_done & itti)? IOT_SKP + AC: AC; | |
| case 2: /* KCC */ | |
| dev_done = dev_done & ~itti; /* clear flag */ | |
| int_req = int_req & ~itti; | |
| sim_activate_abs (&ttix_unit, ttix_unit.wait); /* check soon for more input */ | |
| return 0; /* clear AC */ | |
| case 4: /* KRS */ | |
| return (AC | ttix_buf[ln]); /* return buf */ | |
| case 5: /* KIE */ | |
| if (AC & 1) | |
| int_enable = int_enable | (itti + itto); | |
| else int_enable = int_enable & ~(itti + itto); | |
| int_req = INT_UPDATE; /* update intr */ | |
| break; | |
| case 6: /* KRB */ | |
| dev_done = dev_done & ~itti; /* clear flag */ | |
| int_req = int_req & ~itti; | |
| sim_activate_abs (&ttix_unit, ttix_unit.wait); /* check soon for more input */ | |
| return ttix_buf[ln]; /* return buf */ | |
| default: | |
| return (stop_inst << IOT_V_REASON) + AC; | |
| } /* end switch */ | |
| return AC; | |
| } | |
| /* Unit service */ | |
| t_stat ttix_svc (UNIT *uptr) | |
| { | |
| int32 ln, c, temp; | |
| if ((uptr->flags & UNIT_ATT) == 0) /* attached? */ | |
| return SCPE_OK; | |
| sim_clock_coschedule (uptr, tmxr_poll); /* continue poll */ | |
| ln = tmxr_poll_conn (&ttx_desc); /* look for connect */ | |
| if (ln >= 0) /* got one? rcv enb*/ | |
| ttx_ldsc[ln].rcve = 1; | |
| tmxr_poll_rx (&ttx_desc); /* poll for input */ | |
| for (ln = 0; ln < TTX_LINES; ln++) { /* loop thru lines */ | |
| if (ttx_ldsc[ln].conn) { /* connected? */ | |
| if (dev_done & (INT_TTI1 << ln)) /* Last character still pending? */ | |
| continue; | |
| if ((temp = tmxr_getc_ln (&ttx_ldsc[ln]))) { /* get char */ | |
| if (temp & SCPE_BREAK) /* break? */ | |
| c = 0; | |
| else c = sim_tt_inpcvt (temp, TT_GET_MODE (ttox_unit[ln].flags)); | |
| ttix_buf[ln] = c; | |
| dev_done = dev_done | (INT_TTI1 << ln); | |
| int_req = INT_UPDATE; | |
| } | |
| } | |
| } | |
| return SCPE_OK; | |
| } | |
| /* Reset routine */ | |
| t_stat ttix_reset (DEVICE *dptr) | |
| { | |
| int32 ln, itto; | |
| ttx_enbdis (dptr->flags & DEV_DIS); /* sync enables */ | |
| if (ttix_unit.flags & UNIT_ATT) /* if attached, */ | |
| sim_activate (&ttix_unit, tmxr_poll); /* activate */ | |
| else sim_cancel (&ttix_unit); /* else stop */ | |
| for (ln = 0; ln < TTX_LINES; ln++) { /* for all lines */ | |
| ttix_buf[ln] = 0; /* clear buf, */ | |
| itto = (INT_TTI1 << ln); /* interrupt */ | |
| dev_done = dev_done & ~itto; /* clr done, int */ | |
| int_req = int_req & ~itto; | |
| int_enable = int_enable | itto; /* set enable */ | |
| } | |
| return SCPE_OK; | |
| } | |
| /* Terminal output: IOT routine */ | |
| int32 ttox (int32 inst, int32 AC) | |
| { | |
| int32 pulse = inst & 07; /* pulse */ | |
| int32 ln = TTX_GETLN (inst); /* line # */ | |
| int32 itti = (INT_TTI1 << ln); /* rx intr */ | |
| int32 itto = (INT_TTO1 << ln); /* tx intr */ | |
| switch (pulse) { /* case IR<9:11> */ | |
| case 0: /* TLF */ | |
| dev_done = dev_done | itto; /* set flag */ | |
| int_req = INT_UPDATE; /* update intr */ | |
| break; | |
| case 1: /* TSF */ | |
| return (dev_done & itto)? IOT_SKP + AC: AC; | |
| case 2: /* TCF */ | |
| dev_done = dev_done & ~itto; /* clear flag */ | |
| int_req = int_req & ~itto; /* clear intr */ | |
| break; | |
| case 5: /* SPI */ | |
| return (int_req & (itti | itto))? IOT_SKP + AC: AC; | |
| case 6: /* TLS */ | |
| dev_done = dev_done & ~itto; /* clear flag */ | |
| int_req = int_req & ~itto; /* clear int req */ | |
| case 4: /* TPC */ | |
| sim_activate (&ttox_unit[ln], ttox_unit[ln].wait); /* activate */ | |
| ttox_buf[ln] = AC & 0377; /* load buffer */ | |
| break; | |
| default: | |
| return (stop_inst << IOT_V_REASON) + AC; | |
| } /* end switch */ | |
| return AC; | |
| } | |
| /* Unit service */ | |
| t_stat ttox_svc (UNIT *uptr) | |
| { | |
| int32 c, ln = uptr - ttox_unit; /* line # */ | |
| if (ttx_ldsc[ln].conn) { /* connected? */ | |
| if (ttx_ldsc[ln].xmte) { /* tx enabled? */ | |
| TMLN *lp = &ttx_ldsc[ln]; /* get line */ | |
| c = sim_tt_outcvt (ttox_buf[ln], TT_GET_MODE (ttox_unit[ln].flags)); | |
| if (c >= 0) /* output char */ | |
| tmxr_putc_ln (lp, c); | |
| tmxr_poll_tx (&ttx_desc); /* poll xmt */ | |
| } | |
| else { | |
| tmxr_poll_tx (&ttx_desc); /* poll xmt */ | |
| sim_activate (uptr, ttox_unit[ln].wait); /* wait */ | |
| return SCPE_OK; | |
| } | |
| } | |
| dev_done = dev_done | (INT_TTO1 << ln); /* set done */ | |
| int_req = INT_UPDATE; /* update intr */ | |
| return SCPE_OK; | |
| } | |
| /* Reset routine */ | |
| t_stat ttox_reset (DEVICE *dptr) | |
| { | |
| int32 ln, itto; | |
| ttx_enbdis (dptr->flags & DEV_DIS); /* sync enables */ | |
| for (ln = 0; ln < TTX_LINES; ln++) { /* for all lines */ | |
| ttox_buf[ln] = 0; /* clear buf */ | |
| itto = (INT_TTO1 << ln); /* interrupt */ | |
| dev_done = dev_done & ~itto; /* clr done, int */ | |
| int_req = int_req & ~itto; | |
| int_enable = int_enable | itto; /* set enable */ | |
| sim_cancel (&ttox_unit[ln]); /* deactivate */ | |
| } | |
| return SCPE_OK; | |
| } | |
| /* Attach master unit */ | |
| t_stat ttx_attach (UNIT *uptr, char *cptr) | |
| { | |
| t_stat r; | |
| r = tmxr_attach (&ttx_desc, uptr, cptr); /* attach */ | |
| if (r != SCPE_OK) /* error */ | |
| return r; | |
| sim_activate (uptr, 0); /* start poll at once */ | |
| return SCPE_OK; | |
| } | |
| /* Detach master unit */ | |
| t_stat ttx_detach (UNIT *uptr) | |
| { | |
| int32 i; | |
| t_stat r; | |
| r = tmxr_detach (&ttx_desc, uptr); /* detach */ | |
| for (i = 0; i < TTX_LINES; i++) /* all lines, */ | |
| ttx_ldsc[i].rcve = 0; /* disable rcv */ | |
| sim_cancel (uptr); /* stop poll */ | |
| return r; | |
| } | |
| /* Enable/disable device */ | |
| void ttx_enbdis (int32 dis) | |
| { | |
| if (dis) { | |
| ttix_dev.flags = ttix_dev.flags | DEV_DIS; | |
| ttox_dev.flags = ttox_dev.flags | DEV_DIS; | |
| } | |
| else { | |
| ttix_dev.flags = ttix_dev.flags & ~DEV_DIS; | |
| ttox_dev.flags = ttox_dev.flags & ~DEV_DIS; | |
| } | |
| return; | |
| } |