| /* | |
| * besm6_tty.c: BESM-6 teletype device | |
| * | |
| * Copyright (c) 2009, Leo Broukhis | |
| * Copyright (c) 2009, Serge Vakulenko | |
| * 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 | |
| * SERGE VAKULENKO OR LEONID BROUKHIS 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 Leonid Broukhis or | |
| * Serge Vakulenko shall not be used in advertising or otherwise to promote | |
| * the sale, use or other dealings in this Software without prior written | |
| * authorization from Leonid Broukhis and Serge Vakulenko. | |
| */ | |
| #include "besm6_defs.h" | |
| #include "sim_sock.h" | |
| #include "sim_tmxr.h" | |
| #include <time.h> | |
| #define TTY_MAX 24 /* Serial TTY lines */ | |
| #define LINES_MAX TTY_MAX + 2 /* Including parallel "Consul" typewriters */ | |
| /* | |
| * According to a table in http://ru.wikipedia.org/wiki/МТК-2 | |
| */ | |
| char * rus[] = { 0, "Т", "\r", "О", " ", "Х", "Н", "М", "\n", "Л", "Р", "Г", "И", "П", "Ц", "Ж", | |
| "Е", "З", "Д", "Б", "С", "Ы", "Ф", "Ь", "А", "В", "Й", 0, "У", "Я", "К", 0 }; | |
| char * lat[] = { 0, "T", "\r", "O", " ", "H", "N", "M", "\n", "L", "R", "G", "I", "P", "C", "V", | |
| "E", "Z", "D", "B", "S", "Y", "F", "X", "A", "W", "J", 0, "U", "Q", "K", 0 }; | |
| /* $ = Кто там? */ | |
| char * dig[] = { 0, "5", "\r", "9", " ", "Щ", ",", ".", "\n", ")", "4", "Ш", "8", "0", ":", "=", | |
| "3", "+", "$", "?", "'", "6", "Э", "/", "-", "2", "Ю", 0, "7", "1", "(", 0 }; | |
| char ** reg = 0; | |
| char * process (int sym) | |
| { | |
| /* Inversion is required for Baudot TTYs */ | |
| sym ^= 31; | |
| switch (sym) { | |
| case 0: | |
| reg = rus; | |
| break; | |
| case 27: | |
| reg = dig; | |
| break; | |
| case 31: | |
| reg = lat; | |
| break; | |
| default: | |
| return reg[sym]; | |
| } | |
| return ""; | |
| } | |
| /* For serial lines */ | |
| int tty_active [TTY_MAX+1], tty_sym [TTY_MAX+1]; | |
| int tty_typed [TTY_MAX+1], tty_instate [TTY_MAX+1]; | |
| time_t tty_last_time [TTY_MAX+1]; | |
| int tty_idle_count [TTY_MAX+1]; | |
| uint32 vt_sending, vt_receiving; | |
| uint32 tt_sending, tt_receiving; | |
| // Attachments survive the reset | |
| uint32 tt_mask = 0, vt_mask = 0; | |
| uint32 TTY_OUT = 0, TTY_IN = 0, vt_idle = 0; | |
| uint32 CONSUL_IN[2]; | |
| uint32 CONS_CAN_PRINT[2] = { 01000, 00400 }; | |
| uint32 CONS_HAS_INPUT[2] = { 04000, 02000 }; | |
| /* Command line buffers for TELNET mode. */ | |
| char vt_cbuf [CBUFSIZE] [LINES_MAX+1]; | |
| char *vt_cptr [LINES_MAX+1]; | |
| void tt_print(); | |
| void consul_receive(); | |
| t_stat vt_clk(UNIT *); | |
| extern char *get_sim_sw (char *cptr); | |
| extern int32 tmr_poll; /* calibrated clock timer poll */ | |
| int attached_console; | |
| UNIT tty_unit [] = { | |
| { UDATA (vt_clk, UNIT_DIS|UNIT_IDLE, 0) }, /* fake unit, clock */ | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| /* The next two units are parallel interface */ | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { UDATA (NULL, UNIT_SEQ, 0) }, | |
| { 0 } | |
| }; | |
| REG tty_reg[] = { | |
| { 0 } | |
| }; | |
| /* | |
| * Line descriptors for the TMXR multiplexor. | |
| * The .conn field contains the socket number and denotes a used line. | |
| * For local terminals, .conn = 1. | |
| * To match line indexes with TTY numbers (1-based), | |
| * line 0 is kept used (.conn = 1). | |
| * The .rcve field is set to 1 for network connections. | |
| * For local connections, it is 0. | |
| */ | |
| TMLN tty_line [LINES_MAX+1]; | |
| TMXR tty_desc = { LINES_MAX+1, 0, 0, tty_line }; /* mux descriptor */ | |
| #define TTY_UNICODE_CHARSET 0 | |
| #define TTY_KOI7_JCUKEN_CHARSET (1<<UNIT_V_UF) | |
| #define TTY_KOI7_QWERTY_CHARSET (2<<UNIT_V_UF) | |
| #define TTY_CHARSET_MASK (3<<UNIT_V_UF) | |
| #define TTY_OFFLINE_STATE 0 | |
| #define TTY_TELETYPE_STATE (1<<(UNIT_V_UF+2)) | |
| #define TTY_VT340_STATE (2<<(UNIT_V_UF+2)) | |
| #define TTY_CONSUL_STATE (3<<(UNIT_V_UF+2)) | |
| #define TTY_STATE_MASK (3<<(UNIT_V_UF+2)) | |
| #define TTY_DESTRUCTIVE_BSPACE 0 | |
| #define TTY_AUTHENTIC_BSPACE (1<<(UNIT_V_UF+4)) | |
| #define TTY_BSPACE_MASK (1<<(UNIT_V_UF+4)) | |
| #define TTY_CMDLINE_MASK (1<<(UNIT_V_UF+5)) | |
| t_stat tty_reset (DEVICE *dptr) | |
| { | |
| memset(tty_active, 0, sizeof(tty_active)); | |
| memset(tty_sym, 0, sizeof(tty_sym)); | |
| memset(tty_typed, 0, sizeof(tty_typed)); | |
| memset(tty_instate, 0, sizeof(tty_instate)); | |
| vt_sending = vt_receiving = 0; | |
| TTY_IN = TTY_OUT = 0; | |
| CONSUL_IN[0] = CONSUL_IN[1] = 0; | |
| reg = rus; | |
| vt_idle = 1; | |
| tty_line[0].conn = 1; /* faked, always busy */ | |
| /* In the READY2 register the ready flag for typewriters is inverted (0 means ready), | |
| * and the device is always ready. */ | |
| /* Forcing a ready interrupt. */ | |
| PRP |= CONS_CAN_PRINT[0] | CONS_CAN_PRINT[1]; | |
| //return sim_activate_after (tty_unit, 1000*MSEC/300); | |
| return sim_clock_coschedule (tty_unit, tmr_poll); | |
| } | |
| /* Bit 19 of GRP, should be 300 Hz */ | |
| t_stat vt_clk (UNIT * this) | |
| { | |
| int num; | |
| GRP |= MGRP & GRP_SERIAL; | |
| /* Polling receiving from sockets */ | |
| tmxr_poll_rx (&tty_desc); | |
| vt_print(); | |
| vt_receive(); | |
| consul_receive(); | |
| /* Are there any new network connections? */ | |
| num = tmxr_poll_conn (&tty_desc); | |
| if (num > 0 && num <= LINES_MAX) { | |
| char buf [80]; | |
| TMLN *t = &tty_line [num]; | |
| besm6_debug ("*** tty%d: a new connection from %s", | |
| num, t->ipad); | |
| t->rcve = 1; | |
| tty_unit[num].flags &= ~TTY_STATE_MASK; | |
| tty_unit[num].flags |= TTY_VT340_STATE; | |
| if (num <= TTY_MAX) | |
| vt_mask |= 1 << (TTY_MAX - num); | |
| switch (tty_unit[num].flags & TTY_CHARSET_MASK) { | |
| case TTY_KOI7_JCUKEN_CHARSET: | |
| tmxr_linemsg (t, "Encoding is KOI-7 (jcuken)\r\n"); | |
| break; | |
| case TTY_KOI7_QWERTY_CHARSET: | |
| tmxr_linemsg (t, "Encoding is KOI-7 (qwerty)\r\n"); | |
| break; | |
| case TTY_UNICODE_CHARSET: | |
| tmxr_linemsg (t, "Encoding is UTF-8\r\n"); | |
| break; | |
| } | |
| tty_idle_count[num] = 0; | |
| tty_last_time[num] = time (0); | |
| sprintf (buf, "%.24s from %s\r\n", | |
| ctime (&tty_last_time[num]), | |
| t->ipad); | |
| tmxr_linemsg (t, buf); | |
| /* Entering ^C (ETX) to get a prompt. */ | |
| t->rxb [t->rxbpi++] = '\3'; | |
| } | |
| /* | |
| * It the operator console is remote, we still need to probe the local keyboard | |
| * for a WRU, say, 10 times a second. | |
| */ | |
| if (!attached_console) { | |
| static int divider; | |
| if (++divider == CLK_TPS/10) { | |
| divider = 0; | |
| if (SCPE_STOP == sim_poll_kbd()) | |
| stop_cpu = 1; | |
| } | |
| } | |
| /* Polling sockets for transmission. */ | |
| tmxr_poll_tx (&tty_desc); | |
| /* If the TTY system is not idle, schedule the next interrupt | |
| * by instruction count using the target interrupt rate of 300 Hz; | |
| * otherwise we can wait for a roughly equivalent wallclock time period, | |
| * e.g. until the next 250 Hz wallclock interrupt, but making sure | |
| * that the model time interval between GRP_SERIAL interrupts | |
| * is never less than expected. | |
| * Using sim_activate_after() would be more straightforward (no need for a check | |
| * as the host is faster than the target), but likely less efficient for idling. | |
| */ | |
| if (vt_is_idle() && sim_activate_time(clocks) > 1000*MSEC/300) | |
| return sim_clock_coschedule (this, tmr_poll); | |
| else | |
| return sim_activate(this, 1000*MSEC/300); | |
| } | |
| t_stat tty_setmode (UNIT *u, int32 val, char *cptr, void *desc) | |
| { | |
| int num = u - tty_unit; | |
| TMLN *t = &tty_line [num]; | |
| uint32 mask = 1 << (TTY_MAX - num); | |
| switch (val & TTY_STATE_MASK) { | |
| case TTY_OFFLINE_STATE: | |
| if (t->conn) { | |
| if (t->rcve) { | |
| tmxr_reset_ln (t); | |
| t->rcve = 0; | |
| } else | |
| t->conn = 0; | |
| if (num <= TTY_MAX) { | |
| tty_sym[num] = | |
| tty_active[num] = | |
| tty_typed[num] = | |
| tty_instate[num] = 0; | |
| vt_mask &= ~mask; | |
| tt_mask &= ~mask; | |
| } | |
| } | |
| break; | |
| case TTY_TELETYPE_STATE: | |
| if (num > TTY_MAX) | |
| return SCPE_NXPAR; | |
| t->conn = 1; | |
| t->rcve = 0; | |
| tt_mask |= mask; | |
| vt_mask &= ~mask; | |
| break; | |
| case TTY_VT340_STATE: | |
| t->conn = 1; | |
| t->rcve = 0; | |
| if (num <= TTY_MAX) { | |
| vt_mask |= mask; | |
| tt_mask &= ~mask; | |
| } | |
| break; | |
| case TTY_CONSUL_STATE: | |
| if (num <= TTY_MAX) | |
| return SCPE_NXPAR; | |
| t->conn = 1; | |
| t->rcve = 0; | |
| break; | |
| } | |
| return SCPE_OK; | |
| } | |
| /* | |
| * Allowing telnet connections is done with | |
| * attach tty <port> | |
| * Where <port> is the port number for telnet, e.g. 4199. | |
| */ | |
| t_stat tty_attach (UNIT *u, char *cptr) | |
| { | |
| int num = u - tty_unit; | |
| char gbuf[CBUFSIZE]; | |
| int r, m, n; | |
| /* All arguments but the magic words "console" and "none" are passed | |
| * to tmxr_attach(). | |
| */ | |
| get_glyph (cptr, gbuf, 0); | |
| /* Disallowing future connections to a line */ | |
| if (strcmp (gbuf, "NONE") == 0) { | |
| /* Marking the TTY as unusable. */ | |
| tty_line[num].conn = 1; | |
| tty_line[num].rcve = 0; | |
| if (num <= TTY_MAX) { | |
| vt_mask &= ~(1 << (TTY_MAX - num)); | |
| tt_mask &= ~(1 << (TTY_MAX - num)); | |
| } | |
| besm6_debug ("*** turning off T%03o", num); | |
| return SCPE_OK; | |
| } | |
| if (strcmp (gbuf, "CONSOLE")) { | |
| /* Saving and restoring all .conn, | |
| * because tmxr_attach() zeroes them. */ | |
| for (m=0, n=1; n<=LINES_MAX; ++n) | |
| if (tty_line[n].conn) | |
| m |= 1 << (LINES_MAX-n); | |
| /* The unit number is ignored for the port assignment */ | |
| r = tmxr_attach (&tty_desc, &tty_unit[0], cptr); | |
| for (n=1; n<=LINES_MAX; ++n) | |
| if (m >> (LINES_MAX-n) & 1) | |
| tty_line[n].conn = 1; | |
| return r; | |
| } else { | |
| /* Attaching SIMH console to a particular terminal. */ | |
| u->flags &= ~TTY_STATE_MASK; | |
| u->flags |= TTY_VT340_STATE; | |
| tty_line[num].conn = 1; | |
| tty_line[num].rcve = 0; | |
| if (num <= TTY_MAX) | |
| vt_mask |= 1 << (TTY_MAX - num); | |
| besm6_debug ("*** console on T%03o", num); | |
| attached_console = 1; | |
| return SCPE_OK; | |
| } | |
| return SCPE_ALATT; | |
| } | |
| t_stat tty_detach (UNIT *u) | |
| { | |
| return tmxr_detach (&tty_desc, &tty_unit[0]); | |
| } | |
| /* | |
| * TTY control: | |
| * set ttyN unicode - selecting UTF-8 encoding | |
| * set ttyN jcuken - selecting KOI-7 encoding, JCUKEN layout | |
| * set ttyN qwerty - selecting KOI-7 encoding, QWERTY layout | |
| * set ttyN off - disconnecting a line | |
| * set ttyN tt - a Baudot TTY | |
| * set ttyN vt - a Videoton-340 terminal | |
| * set ttyN consul - a "Consul-254" typewriter | |
| * set ttyN destrbs - destructive (erasing) backspace | |
| * set ttyN authbs - authentic backspace (cursor left) | |
| * set tty disconnect=N - forceful termination of a telnet connection | |
| * show tty - showing modes and types | |
| * show tty connections - showing IP-addresses and connection times | |
| * show tty statistics - showing TX/RX byte counts | |
| */ | |
| MTAB tty_mod[] = { | |
| { TTY_CHARSET_MASK, TTY_UNICODE_CHARSET, "UTF-8 input", | |
| "UNICODE" }, | |
| { TTY_CHARSET_MASK, TTY_KOI7_JCUKEN_CHARSET, "KOI7 (jcuken) input", | |
| "JCUKEN" }, | |
| { TTY_CHARSET_MASK, TTY_KOI7_QWERTY_CHARSET, "KOI7 (qwerty) input", | |
| "QWERTY" }, | |
| { TTY_STATE_MASK, TTY_OFFLINE_STATE, "offline", | |
| "OFF", &tty_setmode }, | |
| { TTY_STATE_MASK, TTY_TELETYPE_STATE, "Teletype", | |
| "TT", &tty_setmode }, | |
| { TTY_STATE_MASK, TTY_VT340_STATE, "Videoton-340", | |
| "VT", &tty_setmode }, | |
| { TTY_STATE_MASK, TTY_CONSUL_STATE, "Consul-254", | |
| "CONSUL", &tty_setmode }, | |
| { TTY_BSPACE_MASK, TTY_DESTRUCTIVE_BSPACE, "destructive backspace", | |
| "DESTRBS" }, | |
| { TTY_BSPACE_MASK, TTY_AUTHENTIC_BSPACE, NULL, | |
| "AUTHBS" }, | |
| { MTAB_XTD | MTAB_VDV, 1, NULL, | |
| "DISCONNECT", &tmxr_dscln, NULL, (void*) &tty_desc }, | |
| { UNIT_ATT, UNIT_ATT, "connections", | |
| NULL, NULL, &tmxr_show_summ, (void*) &tty_desc }, | |
| { MTAB_XTD | MTAB_VDV | MTAB_NMO, 1, "CONNECTIONS", | |
| NULL, NULL, &tmxr_show_cstat, (void*) &tty_desc }, | |
| { MTAB_XTD | MTAB_VDV | MTAB_NMO, 0, "STATISTICS", | |
| NULL, NULL, &tmxr_show_cstat, (void*) &tty_desc }, | |
| { MTAB_XTD | MTAB_VUN | MTAB_NC, 0, NULL, | |
| "LOG", &tmxr_set_log, &tmxr_show_log, (void*) &tty_desc }, | |
| { MTAB_XTD | MTAB_VUN | MTAB_NC, 0, NULL, | |
| "NOLOG", &tmxr_set_nolog, NULL, (void*) &tty_desc }, | |
| { 0 } | |
| }; | |
| DEVICE tty_dev = { | |
| "TTY", tty_unit, tty_reg, tty_mod, | |
| 27, 2, 1, 1, 2, 1, | |
| NULL, NULL, &tty_reset, NULL, &tty_attach, &tty_detach, | |
| NULL, DEV_NET|DEV_DEBUG | |
| }; | |
| void tty_send (uint32 mask) | |
| { | |
| /* besm6_debug ("*** TTY: transmit %08o", mask); */ | |
| TTY_OUT = mask; | |
| } | |
| /* | |
| * Sending a character to a terminal with the given number. | |
| */ | |
| void vt_putc (int num, int c) | |
| { | |
| TMLN *t = &tty_line [num]; | |
| if (! t->conn) | |
| return; | |
| if (t->rcve) { | |
| /* A telnet connection. */ | |
| tmxr_putc_ln (t, c); | |
| } else { | |
| /* Console output. */ | |
| sim_putchar(c); | |
| } | |
| } | |
| /* | |
| * Sending a string to a terminal with the given number. | |
| */ | |
| void vt_puts (int num, const char *s) | |
| { | |
| TMLN *t = &tty_line [num]; | |
| if (! t->conn) | |
| return; | |
| if (t->rcve) { | |
| /* A telnet connection. */ | |
| tmxr_linemsg (t, (char*) s); | |
| } else { | |
| /* Console output. */ | |
| while (*s) sim_putchar(*s++); | |
| } | |
| } | |
| const char * koi7_rus_to_unicode [32] = { | |
| "Ю", "А", "Б", "Ц", "Д", "Е", "Ф", "Г", | |
| "Х", "И", "Й", "К", "Л", "М", "Н", "О", | |
| "П", "Я", "Р", "С", "Т", "У", "Ж", "В", | |
| "Ь", "Ы", "З", "Ш", "Э", "Щ", "Ч", "\0x7f", | |
| }; | |
| /* Videoton-340 employed single byte control codes rather than ESC sequences. */ | |
| void vt_send(int num, uint32 sym, int destructive_bs) | |
| { | |
| if (sym < 0x60) { | |
| switch (sym) { | |
| case '\031': | |
| /* Up */ | |
| vt_puts (num, "\033["); | |
| sym = 'A'; | |
| break; | |
| case '\032': | |
| /* Down */ | |
| vt_puts (num, "\033["); | |
| sym = 'B'; | |
| break; | |
| case '\030': | |
| /* Right */ | |
| vt_puts (num, "\033["); | |
| sym = 'C'; | |
| break; | |
| case '\b': | |
| /* Left */ | |
| vt_puts (num, "\033["); | |
| if (destructive_bs) { | |
| /* Erasing the previous char. */ | |
| vt_puts (num, "D \033["); | |
| } | |
| sym = 'D'; | |
| break; | |
| case '\v': | |
| case '\033': | |
| case '\0': | |
| /* Sending the actual char */ | |
| break; | |
| case '\037': | |
| /* Clear screen */ | |
| vt_puts (num, "\033[H\033["); | |
| sym = 'J'; | |
| break; | |
| case '\n': | |
| /* Also does carriage return */ | |
| vt_putc (num, '\r'); | |
| sym = '\n'; | |
| break; | |
| case '\f': | |
| /* Home */ | |
| vt_puts(num, "\033["); | |
| sym = 'H'; | |
| break; | |
| case '\r': | |
| case '\003': | |
| /* Not displayed */ | |
| sym = 0; | |
| break; | |
| default: | |
| if (sym < ' ') { | |
| /* Other control chars were displayed as dimmed. */ | |
| vt_puts (num, "\033[2m"); | |
| vt_putc (num, sym | 0x40); | |
| vt_puts (num, "\033["); | |
| /* Terminating the ESC sequence */ | |
| sym = 'm'; | |
| } | |
| } | |
| if (sym) | |
| vt_putc (num, sym); | |
| } else | |
| vt_puts (num, koi7_rus_to_unicode[sym - 0x60]); | |
| } | |
| /* | |
| * Handling output to all connected terminals. | |
| */ | |
| void vt_print() | |
| { | |
| uint32 workset = (TTY_OUT & vt_mask) | vt_sending; | |
| int num; | |
| if (workset == 0) { | |
| ++vt_idle; | |
| return; | |
| } | |
| for (num = besm6_highest_bit (workset) - TTY_MAX; | |
| workset; num = besm6_highest_bit (workset) - TTY_MAX) { | |
| int mask = 1 << (TTY_MAX - num); | |
| int c = (TTY_OUT & mask) != 0; | |
| switch (tty_active[num]*2+c) { | |
| case 0: /* idle */ | |
| besm6_debug ("Warning: inactive ttys should have been screened"); | |
| continue; | |
| case 1: /* start bit */ | |
| vt_sending |= mask; | |
| tty_active[num] = 1; | |
| break; | |
| case 18: /* stop bit */ | |
| tty_sym[num] = ~tty_sym[num] & 0x7f; | |
| vt_send (num, tty_sym[num], | |
| (tty_unit[num].flags & TTY_BSPACE_MASK) == TTY_DESTRUCTIVE_BSPACE); | |
| tty_active[num] = 0; | |
| tty_sym[num] = 0; | |
| vt_sending &= ~mask; | |
| break; | |
| case 19: /* framing error */ | |
| vt_putc (num, '#'); | |
| break; | |
| default: | |
| /* little endian ordering */ | |
| if (c) { | |
| tty_sym[num] |= 1 << (tty_active[num]-1); | |
| } | |
| ++tty_active[num]; | |
| break; | |
| } | |
| workset &= ~mask; | |
| } | |
| vt_idle = 0; | |
| } | |
| /* Input from Baudot TTYs not implemented. Output may require some additional work. | |
| */ | |
| void tt_print() | |
| { | |
| uint32 workset = (TTY_OUT & tt_mask) | tt_sending; | |
| int num; | |
| if (workset == 0) { | |
| return; | |
| } | |
| for (num = besm6_highest_bit (workset) - TTY_MAX; | |
| workset; num = besm6_highest_bit (workset) - TTY_MAX) { | |
| int mask = 1 << (TTY_MAX - num); | |
| int c = (TTY_OUT & mask) != 0; | |
| switch (tty_active[num]*2+c) { | |
| case 0: /* idle */ | |
| break; | |
| case 1: /* start bit */ | |
| tt_sending |= mask; | |
| tty_active[num] = 1; | |
| break; | |
| case 12: /* stop bit */ | |
| vt_puts (num, process (tty_sym[num])); | |
| tty_active[num] = 0; | |
| tty_sym[num] = 0; | |
| tt_sending &= ~mask; | |
| break; | |
| case 13: /* framing error */ | |
| vt_putc (num, '#'); | |
| break; | |
| default: | |
| /* big endian ordering */ | |
| if (c) { | |
| tty_sym[num] |= 1 << (5-tty_active[num]); | |
| } | |
| ++tty_active[num]; | |
| break; | |
| } | |
| workset &= ~mask; | |
| } | |
| vt_idle = 0; | |
| } | |
| /* | |
| * Converting from Unicode to KOI-7. | |
| * Returns -1 if unsuccessful. | |
| */ | |
| static int unicode_to_koi7 (unsigned val) | |
| { | |
| if (val <= '_') return val; | |
| else if ('a' <= val && val <= 'z') return val + 'Z' - 'z'; | |
| else switch (val) { | |
| case 0x007f: return 0x7f; | |
| case 0x0410: case 0x0430: return 0x61; | |
| case 0x0411: case 0x0431: return 0x62; | |
| case 0x0412: case 0x0432: return 0x77; | |
| case 0x0413: case 0x0433: return 0x67; | |
| case 0x0414: case 0x0434: return 0x64; | |
| case 0x0415: case 0x0435: return 0x65; | |
| case 0x0416: case 0x0436: return 0x76; | |
| case 0x0417: case 0x0437: return 0x7a; | |
| case 0x0418: case 0x0438: return 0x69; | |
| case 0x0419: case 0x0439: return 0x6a; | |
| case 0x041a: case 0x043a: return 0x6b; | |
| case 0x041b: case 0x043b: return 0x6c; | |
| case 0x041c: case 0x043c: return 0x6d; | |
| case 0x041d: case 0x043d: return 0x6e; | |
| case 0x041e: case 0x043e: return 0x6f; | |
| case 0x041f: case 0x043f: return 0x70; | |
| case 0x0420: case 0x0440: return 0x72; | |
| case 0x0421: case 0x0441: return 0x73; | |
| case 0x0422: case 0x0442: return 0x74; | |
| case 0x0423: case 0x0443: return 0x75; | |
| case 0x0424: case 0x0444: return 0x66; | |
| case 0x0425: case 0x0445: return 0x68; | |
| case 0x0426: case 0x0446: return 0x63; | |
| case 0x0427: case 0x0447: return 0x7e; | |
| case 0x0428: case 0x0448: return 0x7b; | |
| case 0x0429: case 0x0449: return 0x7d; | |
| case 0x042b: case 0x044b: return 0x79; | |
| case 0x042c: case 0x044c: return 0x78; | |
| case 0x042d: case 0x044d: return 0x7c; | |
| case 0x042e: case 0x044e: return 0x60; | |
| case 0x042f: case 0x044f: return 0x71; | |
| } | |
| return -1; | |
| } | |
| /* | |
| * Set command | |
| */ | |
| static t_stat cmd_set (int32 num, char *cptr) | |
| { | |
| char gbuf [CBUFSIZE]; | |
| int len; | |
| cptr = get_sim_sw (cptr); | |
| if (! cptr) | |
| return SCPE_INVSW; | |
| if (! *cptr) | |
| return SCPE_NOPARAM; | |
| cptr = get_glyph (cptr, gbuf, 0); | |
| if (*cptr) | |
| return SCPE_2MARG; | |
| len = strlen (gbuf); | |
| if (strncmp ("UNICODE", gbuf, len) == 0) { | |
| tty_unit[num].flags &= ~TTY_CHARSET_MASK; | |
| tty_unit[num].flags |= TTY_UNICODE_CHARSET; | |
| } else if (strncmp ("JCUKEN", gbuf, len) == 0) { | |
| tty_unit[num].flags &= ~TTY_CHARSET_MASK; | |
| tty_unit[num].flags |= TTY_KOI7_JCUKEN_CHARSET; | |
| } else if (strncmp ("QWERTY", gbuf, len) == 0) { | |
| tty_unit[num].flags &= ~TTY_CHARSET_MASK; | |
| tty_unit[num].flags |= TTY_KOI7_QWERTY_CHARSET; | |
| } else if (strncmp ("TT", gbuf, len) == 0) { | |
| tty_unit[num].flags &= ~TTY_STATE_MASK; | |
| tty_unit[num].flags |= TTY_TELETYPE_STATE; | |
| } else if (strncmp ("VT", gbuf, len) == 0) { | |
| tty_unit[num].flags &= ~TTY_STATE_MASK; | |
| tty_unit[num].flags |= TTY_VT340_STATE; | |
| } else if (strncmp ("CONSUL", gbuf, len) == 0) { | |
| tty_unit[num].flags &= ~TTY_STATE_MASK; | |
| tty_unit[num].flags |= TTY_CONSUL_STATE; | |
| } else if (strncmp ("DESTRBS", gbuf, len) == 0) { | |
| tty_unit[num].flags &= ~TTY_BSPACE_MASK; | |
| tty_unit[num].flags |= TTY_DESTRUCTIVE_BSPACE; | |
| } else if (strncmp ("AUTHBS", gbuf, len) == 0) { | |
| tty_unit[num].flags &= ~TTY_BSPACE_MASK; | |
| tty_unit[num].flags |= TTY_AUTHENTIC_BSPACE; | |
| } else { | |
| return SCPE_NXPAR; | |
| } | |
| return SCPE_OK; | |
| } | |
| /* | |
| * Show command | |
| */ | |
| static t_stat cmd_show (int32 num, char *cptr) | |
| { | |
| TMLN *t = &tty_line [num]; | |
| char gbuf [CBUFSIZE]; | |
| MTAB *m; | |
| int len; | |
| cptr = get_sim_sw (cptr); | |
| if (! cptr) | |
| return SCPE_INVSW; | |
| if (! *cptr) { | |
| sprintf (gbuf, "TTY%d", num); | |
| tmxr_linemsg (t, gbuf); | |
| for (m=tty_mod; m->mask; m++) { | |
| if (m->pstring && | |
| (tty_unit[num].flags & m->mask) == m->match) { | |
| tmxr_linemsg (t, ", "); | |
| tmxr_linemsg (t, m->pstring); | |
| } | |
| } | |
| if (t->txlog) | |
| tmxr_linemsg (t, ", log"); | |
| tmxr_linemsg (t, "\r\n"); | |
| return SCPE_OK; | |
| } | |
| cptr = get_glyph (cptr, gbuf, 0); | |
| if (*cptr) | |
| return SCPE_2MARG; | |
| len = strlen (gbuf); | |
| if (strncmp ("STATISTICS", gbuf, len) == 0) { | |
| sprintf (gbuf, "line %d: input queued/total = %d/%d, " | |
| "output queued/total = %d/%d\r\n", num, | |
| t->rxbpi - t->rxbpr, t->rxcnt, | |
| t->txbpi - t->txbpr, t->txcnt); | |
| tmxr_linemsg (t, gbuf); | |
| } else { | |
| return SCPE_NXPAR; | |
| } | |
| return SCPE_OK; | |
| } | |
| /* | |
| * Exit command | |
| */ | |
| static t_stat cmd_exit (int32 num, char *cptr) | |
| { | |
| return SCPE_EXIT; | |
| } | |
| static t_stat cmd_help (int32 num, char *cptr); | |
| static CTAB cmd_table[] = { | |
| { "SET", &cmd_set, 0, | |
| "set unicode select UTF-8 encoding\r\n" | |
| "set jcuken select KOI7 encoding, 'jcuken' keymap\r\n" | |
| "set qwerty select KOI7 encoding, 'qwerty' keymap\r\n" | |
| "set tt use Teletype mode\r\n" | |
| "set vt use Videoton-340 mode\r\n" | |
| "set consul use Consul-254 mode\r\n" | |
| "set destrbs destructive backspace\r\n" | |
| "set authbs authentic backspace\r\n" | |
| }, | |
| { "SHOW", &cmd_show, 0, | |
| "sh{ow} show modes of the terminal\r\n" | |
| "sh{ow} s{tatistics} show network statistics\r\n" | |
| }, | |
| { "EXIT", &cmd_exit, 0, | |
| "exi{t} | q{uit} | by{e} exit from simulation\r\n" | |
| }, | |
| { "QUIT", &cmd_exit, 0, NULL | |
| }, | |
| { "BYE", &cmd_exit, 0, NULL | |
| }, | |
| { "HELP", &cmd_help, 0, | |
| "h{elp} type this message\r\n" | |
| "h{elp} <command> type help for command\r\n" | |
| }, | |
| { 0 } | |
| }; | |
| /* | |
| * Find command routine | |
| */ | |
| static CTAB *lookup_cmd (char *command) | |
| { | |
| CTAB *c; | |
| int len; | |
| len = strlen (command); | |
| for (c=cmd_table; c->name; c++) { | |
| if (strncmp (command, c->name, len) == 0) | |
| return c; | |
| } | |
| return 0; | |
| } | |
| /* | |
| * Help command | |
| */ | |
| static t_stat cmd_help (int32 num, char *cptr) | |
| { | |
| TMLN *t = &tty_line [num]; | |
| char gbuf [CBUFSIZE]; | |
| CTAB *c; | |
| cptr = get_sim_sw (cptr); | |
| if (! cptr) | |
| return SCPE_INVSW; | |
| if (! *cptr) { | |
| /* Listing all commands. */ | |
| tmxr_linemsg (t, "Commands may be abbreviated. Commands are:\r\n\r\n"); | |
| for (c=cmd_table; c && c->name; c++) | |
| if (c->help) | |
| tmxr_linemsg (t, c->help); | |
| return SCPE_OK; | |
| } | |
| cptr = get_glyph (cptr, gbuf, 0); | |
| if (*cptr) | |
| return SCPE_2MARG; | |
| c = lookup_cmd (gbuf); | |
| if (! c) | |
| return SCPE_ARG; | |
| /* Describing a command. */ | |
| tmxr_linemsg (t, c->help); | |
| return SCPE_OK; | |
| } | |
| /* | |
| * Executing a command. | |
| */ | |
| void vt_cmd_exec (int num) | |
| { | |
| TMLN *t = &tty_line [num]; | |
| char *cptr, gbuf [CBUFSIZE]; | |
| CTAB *cmdp; | |
| t_stat err; | |
| extern char *scp_errors[]; | |
| cptr = get_glyph (vt_cbuf [num], gbuf, 0); /* get command glyph */ | |
| cmdp = lookup_cmd (gbuf); /* lookup command */ | |
| if (! cmdp) { | |
| tmxr_linemsg (t, scp_errors[SCPE_UNK - SCPE_BASE]); | |
| tmxr_linemsg (t, "\r\n"); | |
| return; | |
| } | |
| err = cmdp->action (num, cptr); /* if found, exec */ | |
| if (err >= SCPE_BASE) { /* error? */ | |
| tmxr_linemsg (t, scp_errors [err - SCPE_BASE]); | |
| tmxr_linemsg (t, "\r\n"); | |
| } | |
| if (err == SCPE_EXIT) { /* close telnet session */ | |
| tmxr_reset_ln (t); | |
| } | |
| } | |
| /* | |
| * Command line interface mode. | |
| */ | |
| void vt_cmd_loop (int num, int c) | |
| { | |
| TMLN *t = &tty_line [num]; | |
| char *cbuf, **cptr; | |
| cbuf = vt_cbuf [num]; | |
| cptr = &vt_cptr [num]; | |
| switch (c) { | |
| case '\r': | |
| case '\n': | |
| tmxr_linemsg (t, "\r\n"); | |
| if (*cptr <= cbuf) { | |
| /* An empty line - returning to terminal emulation. */ | |
| tty_unit[num].flags &= ~TTY_CMDLINE_MASK; | |
| break; | |
| } | |
| /* Executing. */ | |
| **cptr = 0; | |
| vt_cmd_exec (num); | |
| tmxr_linemsg (t, "sim>"); | |
| *cptr = vt_cbuf[num]; | |
| break; | |
| case '\b': | |
| case 0177: | |
| /* Backspace. */ | |
| if (*cptr <= cbuf) | |
| break; | |
| tmxr_linemsg (t, "\b \b"); | |
| while (*cptr > cbuf) { | |
| --*cptr; | |
| if (! (**cptr & 0x80)) | |
| break; | |
| } | |
| break; | |
| case 'U' & 037: | |
| /* Erase line. */ | |
| erase_line: while (*cptr > cbuf) { | |
| --*cptr; | |
| if (! (**cptr & 0x80)) | |
| tmxr_linemsg (t, "\b \b"); | |
| } | |
| break; | |
| case 033: | |
| /* Escape [ X. */ | |
| if (tmxr_getc_ln (t) != '[' + TMXR_VALID) | |
| break; | |
| switch (tmxr_getc_ln (t) - TMXR_VALID) { | |
| case 'A': /* Up arrow */ | |
| if (*cptr <= cbuf) { | |
| *cptr = cbuf + strlen (cbuf); | |
| if (*cptr > cbuf) | |
| tmxr_linemsg (t, cbuf); | |
| } | |
| break; | |
| case 'B': /* Down arrow */ | |
| goto erase_line; | |
| } | |
| break; | |
| default: | |
| if (c < ' ' || *cptr > cbuf+CBUFSIZE-5) | |
| break; | |
| *(*cptr)++ = c; | |
| tmxr_putc_ln (t, c); | |
| break; | |
| } | |
| } | |
| /* | |
| * Getting a char from a terminal with the given number. | |
| * Returns -1 if there is no char to input. | |
| */ | |
| int vt_getc (int num) | |
| { | |
| TMLN *t = &tty_line [num]; | |
| extern int32 sim_int_char; | |
| int c; | |
| time_t now; | |
| if (! t->conn) { | |
| /* Пользователь отключился. */ | |
| if (t->ipad) { | |
| besm6_debug ("*** tty%d: disconnecting %s", | |
| num, | |
| t->ipad); | |
| t->ipad = NULL; | |
| } | |
| tty_setmode (tty_unit+num, TTY_OFFLINE_STATE, 0, 0); | |
| tty_unit[num].flags &= ~TTY_STATE_MASK; | |
| return -1; | |
| } | |
| if (t->rcve) { | |
| /* A telnet line. */ | |
| c = tmxr_getc_ln (t); | |
| if (! (c & TMXR_VALID)) { | |
| now = time (0); | |
| if (now > tty_last_time[num] + 5*60) { | |
| ++tty_idle_count[num]; | |
| if (tty_idle_count[num] > 3) { | |
| tmxr_linemsg (t, "\r\nSIMH: END OF SESSION\r\n"); | |
| tmxr_reset_ln (t); | |
| return -1; | |
| } | |
| tmxr_linemsg (t, "\r\nSIMH: WAKE UP!\r\n"); | |
| tty_last_time[num] = now; | |
| } | |
| return -1; | |
| } | |
| tty_idle_count[num] = 0; | |
| tty_last_time[num] = time (0); | |
| if (tty_unit[num].flags & TTY_CMDLINE_MASK) { | |
| /* Continuing CLI mode. */ | |
| vt_cmd_loop (num, c & 0377); | |
| return -1; | |
| } | |
| if ((c & 0377) == sim_int_char) { | |
| /* Entering CLI mode. */ | |
| tty_unit[num].flags |= TTY_CMDLINE_MASK; | |
| tmxr_linemsg (t, "sim>"); | |
| vt_cptr[num] = vt_cbuf[num]; | |
| return -1; | |
| } | |
| } else { | |
| /* Console (keyboard) input. */ | |
| c = sim_poll_kbd(); | |
| if (c == SCPE_STOP) { | |
| stop_cpu = 1; /* just in case */ | |
| } | |
| if (! (c & SCPE_KFLAG)) | |
| return -1; | |
| } | |
| return c & 0377; | |
| } | |
| /* | |
| * Reading UTF-8, returning KOI-7. | |
| * The resulting char is in the range 0..0177. | |
| * If no input, returns -1. | |
| */ | |
| static int vt_kbd_input_unicode (int num) | |
| { | |
| int c1, c2, c3, r; | |
| again: | |
| r = vt_getc (num); | |
| if (r < 0 || r > 0377) | |
| return r; | |
| c1 = r & 0377; | |
| if (! (c1 & 0x80)) | |
| return unicode_to_koi7 (c1); | |
| r = vt_getc (num); | |
| if (r < 0 || r > 0377) | |
| return r; | |
| c2 = r & 0377; | |
| if (! (c1 & 0x20)) | |
| return unicode_to_koi7 ((c1 & 0x1f) << 6 | (c2 & 0x3f)); | |
| r = vt_getc (num); | |
| if (r < 0 || r > 0377) | |
| return r; | |
| c3 = r & 0377; | |
| if (c1 == 0xEF && c2 == 0xBB && c3 == 0xBF) { | |
| /* Skip zero width no-break space. */ | |
| goto again; | |
| } | |
| return unicode_to_koi7 ((c1 & 0x0f) << 12 | (c2 & 0x3f) << 6 | | |
| (c3 & 0x3f)); | |
| } | |
| /* | |
| * Alternatively, entering Cyrillics can be done without switching keyboard layouts. | |
| * Period and comma are entered with shift, less-than and greater-than are mapped to tilde-grave. | |
| * Semicolon is }, quote is |. | |
| */ | |
| static int vt_kbd_input_koi7 (int num) | |
| { | |
| int r; | |
| r = vt_getc (num); | |
| if (r < 0 || r > 0377) | |
| return r; | |
| r &= 0377; | |
| switch (r) { | |
| case '\r': return '\003'; | |
| case 'q': return 'j'; | |
| case 'w': return 'c'; | |
| case 'e': return 'u'; | |
| case 'r': return 'k'; | |
| case 't': return 'e'; | |
| case 'y': return 'n'; | |
| case 'u': return 'g'; | |
| case 'i': return '{'; | |
| case 'o': return '}'; | |
| case 'p': return 'z'; | |
| case '[': return 'h'; | |
| case '{': return '['; | |
| case 'a': return 'f'; | |
| case 's': return 'y'; | |
| case 'd': return 'w'; | |
| case 'f': return 'a'; | |
| case 'g': return 'p'; | |
| case 'h': return 'r'; | |
| case 'j': return 'o'; | |
| case 'k': return 'l'; | |
| case 'l': return 'd'; | |
| case ';': return 'v'; | |
| case '}': return ';'; | |
| case '\'': return '|'; | |
| case '|': return '\''; | |
| case 'z': return 'q'; | |
| case 'x': return '~'; | |
| case 'c': return 's'; | |
| case 'v': return 'm'; | |
| case 'b': return 'i'; | |
| case 'n': return 't'; | |
| case 'm': return 'x'; | |
| case ',': return 'b'; | |
| case '<': return ','; | |
| case '.': return '`'; | |
| case '>': return '.'; | |
| case '~': return '>'; | |
| case '`': return '<'; | |
| default: return r; | |
| } | |
| } | |
| int odd_parity(unsigned char c) | |
| { | |
| c = (c & 0x55) + ((c >> 1) & 0x55); | |
| c = (c & 0x33) + ((c >> 2) & 0x33); | |
| c = (c & 0x0F) + ((c >> 4) & 0x0F); | |
| return c & 1; | |
| } | |
| /* | |
| * Handling input from all connected terminals. | |
| */ | |
| void vt_receive() | |
| { | |
| uint32 workset = vt_mask; | |
| int num; | |
| TTY_IN = 0; | |
| for (num = besm6_highest_bit (workset) - TTY_MAX; | |
| workset; num = besm6_highest_bit (workset) - TTY_MAX) { | |
| uint32 mask = 1 << (TTY_MAX - num); | |
| switch (tty_instate[num]) { | |
| case 0: | |
| switch (tty_unit[num].flags & TTY_CHARSET_MASK) { | |
| case TTY_KOI7_JCUKEN_CHARSET: | |
| tty_typed[num] = vt_kbd_input_koi7 (num); | |
| break; | |
| case TTY_KOI7_QWERTY_CHARSET: | |
| tty_typed[num] = vt_getc (num); | |
| break; | |
| case TTY_UNICODE_CHARSET: | |
| tty_typed[num] = vt_kbd_input_unicode (num); | |
| break; | |
| default: | |
| tty_typed[num] = '?'; | |
| break; | |
| } | |
| if (tty_typed[num] < 0) { | |
| break; | |
| } | |
| if (tty_typed[num] <= 0177) { | |
| if (tty_typed[num] == '\r' || tty_typed[num] == '\n') | |
| tty_typed[num] = 3; /* ETX is used as Enter */ | |
| if (tty_typed[num] == '\177') | |
| tty_typed[num] = '\b'; /* ASCII DEL -> BS */ | |
| tty_instate[num] = 1; | |
| TTY_IN |= mask; /* start bit */ | |
| GRP |= GRP_TTY_START; /* not used ? */ | |
| /* auto-enabling the interrupt just in case | |
| * (seems to be unneeded as the interrupt is never disabled) | |
| */ | |
| MGRP |= GRP_SERIAL; | |
| vt_receiving |= mask; | |
| } | |
| break; | |
| case 1: case 2: case 3: case 4: case 5: case 6: case 7: | |
| /* need inverted byte */ | |
| TTY_IN |= (tty_typed[num] & (1 << (tty_instate[num]-1))) ? 0 : mask; | |
| tty_instate[num]++; | |
| break; | |
| case 8: | |
| TTY_IN |= odd_parity(tty_typed[num]) ? 0 : mask; /* even parity of inverted */ | |
| tty_instate[num]++; | |
| break; | |
| case 9: case 10: case 11: | |
| /* stop bits are 0 */ | |
| tty_instate[num]++; | |
| break; | |
| case 12: | |
| tty_instate[num] = 0; /* ready for the next char */ | |
| vt_receiving &= ~mask; | |
| break; | |
| } | |
| workset &= ~mask; | |
| } | |
| if (vt_receiving) | |
| vt_idle = 0; | |
| } | |
| /* | |
| * Checking if all terminals are idle. | |
| * SIMH should not enter idle mode until they are. | |
| */ | |
| int vt_is_idle () | |
| { | |
| return (tt_mask ? vt_idle > 300 : vt_idle > 10); | |
| } | |
| int tty_query () | |
| { | |
| /* besm6_debug ("*** TTY: query");*/ | |
| return TTY_IN; | |
| } | |
| void consul_print (int dev_num, uint32 cmd) | |
| { | |
| int line_num = dev_num + TTY_MAX + 1; | |
| if (tty_dev.dctrl) | |
| besm6_debug(">>> CONSUL%o: %03o", line_num, cmd & 0377); | |
| cmd &= 0177; | |
| switch (tty_unit[line_num].flags & TTY_STATE_MASK) { | |
| case TTY_VT340_STATE: | |
| vt_send (line_num, cmd, | |
| (tty_unit[line_num].flags & TTY_BSPACE_MASK) == TTY_DESTRUCTIVE_BSPACE); | |
| break; | |
| case TTY_CONSUL_STATE: | |
| besm6_debug(">>> CONSUL%o: Native charset not implemented", line_num); | |
| break; | |
| } | |
| // PRP |= CONS_CAN_PRINT[dev_num]; | |
| vt_idle = 0; | |
| } | |
| void consul_receive () | |
| { | |
| int c, line_num, dev_num; | |
| for (dev_num = 0; dev_num < 2; ++dev_num){ | |
| line_num = dev_num + TTY_MAX + 1; | |
| if (! tty_line[line_num].conn) | |
| continue; | |
| switch (tty_unit[line_num].flags & TTY_CHARSET_MASK) { | |
| case TTY_KOI7_JCUKEN_CHARSET: | |
| c = vt_kbd_input_koi7 (line_num); | |
| break; | |
| case TTY_KOI7_QWERTY_CHARSET: | |
| c = vt_getc (line_num); | |
| break; | |
| case TTY_UNICODE_CHARSET: | |
| c = vt_kbd_input_unicode (line_num); | |
| break; | |
| default: | |
| c = '?'; | |
| break; | |
| } | |
| if (c >= 0 && c <= 0177) { | |
| CONSUL_IN[dev_num] = odd_parity(c) ? c | 0200 : c; | |
| if (c == '\r' || c == '\n') | |
| CONSUL_IN[dev_num] = 3; | |
| PRP |= CONS_HAS_INPUT[dev_num]; | |
| vt_idle = 0; | |
| } | |
| } | |
| } | |
| uint32 consul_read (int num) | |
| { | |
| if (tty_dev.dctrl) | |
| besm6_debug("<<< CONSUL%o: %03o", num+TTY_MAX+1, CONSUL_IN[num]); | |
| return CONSUL_IN[num]; | |
| } |