| /* i1620_tty.c: IBM 1620 typewriter | |
| Copyright (c) 2002-2017, 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. | |
| tty console typewriter | |
| 26-May-17 RMS Added deferred IO | |
| 18-May-17 RMS Fixed keyboard interrupt problem for Linux | |
| Added input backspace for Model II | |
| 04-May-17 DW Revised tab calculation algorithm | |
| 13-Mar-17 RMS Fixed tab stop array overrun at right margin (COVERITY) | |
| 21-Feb-15 TFM Option to provide single digit numeric output | |
| 05-Feb-15 TFM Changes to translate tables and valid input char. | |
| 02-Jan-14 RMS Added variable tab stops | |
| 10-Dec-13 RMS Fixed DN wraparound (Bob Armstrong) | |
| 21-Sep-05 RMS Revised translation tables for 7094/1401 compatibility | |
| 22-Dec-02 RMS Added break test | |
| */ | |
| #include "i1620_defs.h" | |
| #define NUM_1_DIGIT TRUE /* indicate numeric output will use single digit format (tfm) */ | |
| /* Maximum number of characters per line, or one-based column number of last char cell */ | |
| #define TTO_COLMAX 80 | |
| #define UF_V_1DIG (UNIT_V_UF) | |
| #define UF_1DIG (1 << UF_V_1DIG) | |
| #define UTTI 1 | |
| #define UTTO 0 | |
| uint32 tti_unlock = 0; /* expecting input */ | |
| uint32 tti_flag = 0; /* flag typed */ | |
| int32 tto_col = 1; /* one-based, char loc to print next */ | |
| uint8 tto_tabs[TTO_COLMAX + 1] = { /* Zero-based access, one-based UI */ | |
| 0,0,0,0,0,0,0,0, | |
| 1,0,0,0,0,0,0,0, | |
| 1,0,0,0,0,0,0,0, | |
| 1,0,0,0,0,0,0,0, | |
| 1,0,0,0,0,0,0,0, | |
| 1,0,0,0,0,0,0,0, | |
| 1,0,0,0,0,0,0,0, | |
| 1,0,0,0,0,0,0,0, | |
| 1,0,0,0,0,0,0,0, | |
| 1,0,0,0,0,0,0,0, | |
| 1 | |
| }; | |
| extern uint8 M[MAXMEMSIZE]; | |
| extern uint8 ind[NUM_IND]; | |
| extern UNIT cpu_unit; | |
| extern uint32 io_stop; | |
| extern uint32 cpuio_inp, cpuio_opc, cpuio_cnt, PAR; | |
| t_stat tto_num (void); | |
| t_stat tto_write (uint32 c); | |
| t_stat tti_svc (UNIT *uptr); | |
| t_stat tto_svc (UNIT *uptr); | |
| t_stat tty_reset (DEVICE *dptr); | |
| t_stat tty_set_fixtabs (UNIT *uptr, int32 val, CONST char *cptr, void *desc); | |
| t_stat tty_set_12digit (UNIT *uptr, int32 val, CONST char *cptr, void *desc); | |
| /* TTY data structures | |
| tty_dev TTY device descriptor | |
| tty_unit TTY unit descriptor | |
| tty_reg TTY register list | |
| */ | |
| UNIT tty_unit[] = { | |
| { UDATA (&tto_svc, 0, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&tti_svc, 0, 0), KBD_POLL_WAIT } | |
| }; | |
| REG tty_reg[] = { | |
| { FLDATAD (UNLOCK, tti_unlock, 0, "keyboard unlocked flag") }, | |
| { FLDATAD (FLAG, tti_flag, 0, "set flag on next input digit"), REG_HRO }, | |
| { DRDATAD (COL, tto_col, 7, "current column") }, | |
| { DRDATAD (KTIME, tty_unit[UTTI].wait, 24, "keyboard polling interval"), REG_NZ + PV_LEFT }, | |
| { DRDATAD (TTIME, tty_unit[UTTO].wait, 24, "typewriter character delay"), REG_NZ + PV_LEFT }, | |
| { DRDATAD (CPS, tty_unit[UTTO].DEFIO_CPS, 24, "Character Output Rate"), PV_LEFT }, | |
| { DRDATAD (ICPS, tty_unit[UTTI].DEFIO_CPS, 24, "Character Input Rate"), PV_LEFT }, | |
| { NULL } | |
| }; | |
| MTAB tty_mod[] = { | |
| { MTAB_XTD|MTAB_VDV, TTO_COLMAX, NULL, "TABS=col;col;col...", | |
| &sim_tt_settabs, NULL, (void *) tto_tabs, "set tab stops at the specified columns" }, | |
| { MTAB_XTD|MTAB_VDV|MTAB_NMO, TTO_COLMAX, "TABS", NULL, | |
| NULL, &sim_tt_showtabs, (void *) tto_tabs, "display current tab stops" }, | |
| { MTAB_XTD|MTAB_VDV, 0, NULL, "NOTABS", | |
| &tty_set_fixtabs, NULL, NULL, "remove all tab stops" }, | |
| { MTAB_XTD|MTAB_VDV, 8, NULL, "DEFAULTTABS", | |
| &tty_set_fixtabs, NULL, NULL, "set tab stops every eight columns" }, | |
| { UF_1DIG, UF_1DIG, "combined digits and flags", "1DIGIT", | |
| &tty_set_12digit, NULL, NULL, "type flagged digits as letters" }, | |
| { UF_1DIG, 0 , "separate digits and flags", "2DIGIT", | |
| &tty_set_12digit, NULL, NULL, "type flagged digits as ~digit" }, | |
| { 0 } | |
| }; | |
| DEVICE tty_dev = { | |
| "TTY", tty_unit, tty_reg, tty_mod, | |
| 2, 10, 31, 1, 8, 7, | |
| NULL, NULL, &tty_reset, | |
| NULL, NULL, NULL, | |
| NULL, DEV_DEFIO | |
| }; | |
| /* Data tables */ | |
| /* Keyboard to numeric */ | |
| /* The following constant is a list of valid 1620 numeric characters | |
| that can be entered from the keyboard. They are the digits 0-9, | |
| record mark(|), numeric blank(@) and group mark(}). All others | |
| are cosidered invalid. When entering data, these characters may | |
| all be preceeded by tilde(~) or accent(`) to indicate that the | |
| following character should be entered into storage with a flag. | |
| Alternatively, ] can be entered for flagged 0, | |
| J-R or j-r can be entered for flagged 1-9, | |
| ! for flagged RM, * for flagged numeric blank, | |
| " for flagged GM. | |
| These different methods of entering numeric data represent | |
| compromises since there is no practical way to exactly emulate | |
| the 1620 typewriter capability of entering a flag but not | |
| spacing the carriage. Entering a flag symbol in front of a | |
| character is easier and sometimes more readable; using the | |
| letters j-r is useful if column alignment is important on | |
| the screen or when copying data that has printed letters in | |
| place of flagged digits. This also matches the output of WN | |
| or DN to the line printer. | |
| *tti_to_num is the string of valid characters | |
| tti_position_to_internal[] are the matching internal codes | |
| (Tom McBride)*/ | |
| const char *tti_to_num = "0123456789|@}]jklmnopqr!*\"JKLMNOPQR"; | |
| const char tti_position_to_internal[35] = { | |
| 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, REC_MARK, NUM_BLANK, GRP_MARK, | |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, | |
| FLG_REC_MARK, FLG_NUM_BLANK, FLG_GRP_MARK, | |
| 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19 | |
| }; | |
| /* Keyboard to alphameric (digit pair) - translates LC to UC */ | |
| const int8 tti_to_alp[128] = { | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 00 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 10 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| 0x00, 0x5A, 0x5F, -1, 0x13, -1, -1, -1, /* !"#$%&' */ | |
| 0x24, 0x04, 0x14, 0x10, 0x23, 0x20, 0x03, 0x21, /* ()*+,-./ */ | |
| 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 01234567 */ | |
| 0x78, 0x79, -1, -1, -1, 0x33, -1, -1, /* 89:;<=>? */ | |
| 0x34, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* @ABCDEFG */ | |
| 0x48, 0x49, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, /* HIJKLMNO */ | |
| 0x57, 0x58, 0x59, 0x62, 0x63, 0x64, 0x65, 0x66, /* PQRSTUVW */ | |
| 0x67, 0x68, 0x69, -1, -1, 0x50, -1, -1, /* XYZ[\]^_ */ | |
| -1, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* `abcdefg */ | |
| 0x48, 0x49, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, /* hijklmno */ | |
| 0x57, 0x58, 0x59, 0x62, 0x63, 0x64, 0x65, 0x66, /* pqrstuvw */ | |
| 0x67, 0x68, 0x69, -1, 0x0A, 0x0F, -1, -1 /* xyz{|}~ */ | |
| }; | |
| /* Numeric (digit) to typewriter */ | |
| /* Digits with values of 11, 13 and 14 should never occur and will be typed as :'s | |
| if they ever do. These are really errors. (Tom McBride) */ | |
| /* If flagged digits are being printed with preceeding ` characters only the first | |
| half of this table is actually used. If digits are being printed one char per | |
| digit the whole table is used. (Tom McBride) */ | |
| const char num_to_tto[32] = { | |
| '0', '1', '2', '3', '4', '5', '6', '7', | |
| '8', '9', '|', ':', '@', ':', ':', '}', | |
| ']', 'J', 'K', 'L', 'M', 'N', 'O', 'P', | |
| 'Q', 'R', '!', ':', '*', ':', ':', '"' | |
| }; | |
| /* Alphameric (digit pair) to typewriter */ | |
| /* Characters not in 1620 set have been removed from table (tfm) */ | |
| const char alp_to_tto[256] = { | |
| ' ', -1, -1, '.', ')', -1, -1, -1, /* 00 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| '+', -1, -1, '$', '*', -1, -1, -1, /* 10 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| '-', '/', -1, ',', '(', -1, -1, -1, /* 20 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, '=', '@', -1, -1, -1, /* 30 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, 'A', 'B', 'C', 'D', 'E', 'F', 'G', /* 40 */ | |
| 'H', 'I', -1, -1, -1, -1, -1, -1, | |
| '-', 'J', 'K', 'L', 'M', 'N', 'O', 'P', /* 50 */ | |
| 'Q', 'R', -1, -1, -1, -1, -1, -1, | |
| -1, -1, 'S', 'T', 'U', 'V', 'W', 'X', /* 60 */ | |
| 'Y', 'Z', -1, -1, -1, -1, -1, -1, | |
| '0', '1', '2', '3', '4', '5', '6', '7', /* 70 */ | |
| '8', '9', -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 80 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 90 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* A0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* B0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* C0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* D0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* E0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* F0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1 | |
| }; | |
| /* Terminal IO | |
| - On input, parity errors cannot occur. | |
| - On input, release-start does NOT cause a record mark to be stored. | |
| - On output, invalid characters type an invalid character and set WRCHK. | |
| If IO stop is set, the system halts at the end of the operation. | |
| */ | |
| t_stat tty (uint32 op, uint32 pa, uint32 f0, uint32 f1) | |
| { | |
| switch (op) { /* case on op */ | |
| case OP_K: /* control */ | |
| switch (f1) { /* case on control */ | |
| case 1: /* space */ | |
| tto_write (' '); | |
| break; | |
| case 2: /* return */ | |
| tto_write ('\r'); | |
| break; | |
| case 3: /* backspace */ | |
| if ((cpu_unit.flags & IF_MII) == 0) | |
| return STOP_INVFNC; | |
| tto_write ('\b'); | |
| break; | |
| case 4: /* index */ | |
| if ((cpu_unit.flags & IF_MII) == 0) | |
| return STOP_INVFNC; | |
| tto_write ('\n'); | |
| break; | |
| case 8: /* tab */ | |
| tto_write ('\t'); | |
| break; | |
| default: | |
| return STOP_INVFNC; | |
| } | |
| break; | |
| case OP_WN: | |
| case OP_DN: | |
| case OP_WA: | |
| cpuio_set_inp (op, &tty_unit[UTTO]); /* set IO in progress */ | |
| break; | |
| case OP_RN: | |
| case OP_RA: | |
| tti_unlock = 1; /* unlock keyboard */ | |
| tti_flag = 0; /* init flag */ | |
| tto_write ('>'); /* prompt user */ | |
| cpuio_set_inp (op, NULL); /* set IO in progress */ | |
| break; | |
| default: /* invalid function */ | |
| return STOP_INVFNC; | |
| } | |
| return SCPE_OK; | |
| } | |
| /* Input unit service - OP can be RA or RN */ | |
| t_stat tti_svc (UNIT *uptr) | |
| { | |
| int32 temp; | |
| int8 raw, c; | |
| const char *cp; | |
| DEFIO_ACTIVATE (uptr); /* continue poll */ | |
| if ((temp = sim_poll_kbd ()) < SCPE_KFLAG) /* no char or error? */ | |
| return temp; | |
| if (tti_unlock == 0) /* expecting input? */ | |
| return SCPE_OK; /* no, ignore */ | |
| raw = (int8) temp; | |
| if (raw == '\r') { /* return? */ | |
| tto_write (raw); /* echo */ | |
| tti_unlock = 0; /* no more input */ | |
| cpuio_clr_inp (NULL); | |
| return SCPE_OK; | |
| } | |
| if (cpuio_opc == OP_RN) { /* RN? */ | |
| if (((raw == '\b') || (raw == 0x7F)) && /* backspace or del? */ | |
| ((cpu_unit.flags & IF_MII) != 0)) { /* on model 2? */ | |
| tto_write ('-'); /* print minus */ | |
| MM (PAR); /* decr mem addr */ | |
| return SCPE_OK; | |
| } | |
| else if ((raw == '~') || (raw == '`')) { /* flag? mark */ | |
| tto_write (raw); | |
| tti_flag = FLAG; | |
| return SCPE_OK; | |
| } | |
| else if ((cp = strchr (tti_to_num, raw)) == 0) { /* invalid? */ | |
| tto_write ('\a'); /* beep! */ | |
| return SCPE_OK; | |
| } | |
| tto_write (raw); /* echo */ | |
| if (cpuio_cnt >= MEMSIZE) { /* wrap around? */ | |
| tti_unlock = 0; /* no more input */ | |
| cpuio_clr_inp (NULL); | |
| return STOP_RWRAP; | |
| } | |
| c = tti_position_to_internal[(cp - tti_to_num)] | tti_flag; /* assemble char */ | |
| M[PAR] = c & (FLAG | DIGIT); /* store char */ | |
| tti_flag = 0; /* re-init flag */ | |
| PP (PAR); /* incr mem addr */ | |
| cpuio_cnt++; | |
| } | |
| else { /* RA */ | |
| if (((raw == '\b') || (raw == 0x7F)) && /* backspace or del? */ | |
| ((cpu_unit.flags & IF_MII) != 0)) { /* on model 2? */ | |
| tto_write ('-'); /* print minus */ | |
| PAR = ADDR_A (PAR, -2); /* decr mem addr*/ | |
| return SCPE_OK; | |
| } | |
| else if ((raw >= sizeof(tti_to_alp)) || /* illegal char? */ | |
| (tti_to_alp[raw] < 0)) { | |
| tto_write ('\a'); /* beep! */ | |
| return SCPE_OK; | |
| } | |
| tto_write (raw); /* echo */ | |
| if (cpuio_cnt >= MEMSIZE) { /* wrap around? */ | |
| tti_unlock = 0; /* no more input */ | |
| cpuio_clr_inp (NULL); | |
| return STOP_RWRAP; | |
| } | |
| c = tti_to_alp[raw]; /* xlate */ | |
| M[PAR] = (M[PAR] & FLAG) | (c & DIGIT); /* store 2 digits */ | |
| M[PAR - 1] = (M[PAR - 1] & FLAG) | ((c >> 4) & DIGIT); | |
| PAR = ADDR_A (PAR, 2); /* incr mem addr */ | |
| cpuio_cnt = cpuio_cnt + 2; | |
| } | |
| return SCPE_OK; | |
| } | |
| /* Output unit service */ | |
| t_stat tto_svc (UNIT *uptr) { | |
| uint8 d; | |
| int8 ttc; | |
| t_stat sta = SCPE_OK; | |
| if ((cpuio_opc != OP_DN) && (cpuio_cnt >= MEMSIZE)) { /* wrap, ~dump? */ | |
| cpuio_clr_inp (uptr); /* done */ | |
| return STOP_RWRAP; | |
| } | |
| DEFIO_ACTIVATE (uptr); /* sched another xfer */ | |
| switch (cpuio_opc) { /* decode op */ | |
| case OP_DN: | |
| if ((cpuio_cnt != 0) && ((PAR % 20000) == 0)) /* done? */ | |
| break; | |
| return tto_num (); /* write numeric */ | |
| case OP_WN: | |
| if ((M[PAR] & REC_MARK) == REC_MARK) /* end record? */ | |
| break; | |
| return tto_num (); /* write numeric */ | |
| case OP_WA: | |
| d = M[PAR] & DIGIT; /* get digit */ | |
| if ((d & REC_MARK) == REC_MARK) /* 8-2 char? done */ | |
| break; | |
| d = ((M[PAR - 1] & DIGIT) << 4) | d; /* get digit pair */ | |
| ttc = alp_to_tto[d]; /* translate */ | |
| if (ttc < 0) { /* bad char? */ | |
| ind[IN_WRCHK] = 1; /* set write check */ | |
| if (io_stop) /* set return status */ | |
| sta = STOP_INVCHR; | |
| break; | |
| } | |
| tto_write (ttc & 0x7F); /* write */ | |
| PAR = ADDR_A (PAR, 2); /* incr mem addr */ | |
| cpuio_cnt = cpuio_cnt + 2; | |
| return SCPE_OK; | |
| default: | |
| return SCPE_IERR; | |
| } | |
| cpuio_clr_inp (uptr); /* clear IO in progress */ | |
| return sta; | |
| } | |
| /* Write numerically - cannot generate parity errors */ | |
| t_stat tto_num (void) | |
| { | |
| t_stat r; | |
| uint8 d; | |
| d = M[PAR]; /* get char */ | |
| if (tty_unit[UTTO].flags & UF_1DIG) /* how display flagged digits? */ | |
| r = tto_write (num_to_tto[d & (DIGIT|FLAG)]); /* single digit display */ | |
| else { | |
| if (d & FLAG) /* flag? */ | |
| tto_write ('`'); /* write flag indicator */ | |
| r = tto_write (num_to_tto[d & DIGIT]); /* write the digit */ | |
| } | |
| if (r != SCPE_OK) /* write error? */ | |
| return r; | |
| PP (PAR); /* incr mem addr */ | |
| cpuio_cnt++; | |
| return SCPE_OK; | |
| } | |
| /* Wrap line, if needed, prior to character output */ | |
| void tto_wrap(void) | |
| { | |
| if (tto_col > TTO_COLMAX) { /* line wrap? */ | |
| sim_putchar('\r'); | |
| sim_putchar('\n'); | |
| tto_col = 1; | |
| } | |
| } | |
| /* Write, maintaining position */ | |
| t_stat tto_write (uint32 c) | |
| { | |
| if (c == '\t') { /* tab? */ | |
| tto_wrap(); | |
| do { | |
| sim_putchar(' '); /* use spaces */ | |
| tto_col++; | |
| } while (!(tto_col > TTO_COLMAX || tto_tabs[tto_col-1] == 1)); | |
| } | |
| else if (c == '\r') { /* return? */ | |
| sim_putchar ('\r'); /* crlf */ | |
| sim_putchar ('\n'); | |
| tto_col = 1; /* back to LMargin */ | |
| } | |
| else if ((c == '\n') || (c == '\a')) { /* non-spacing? */ | |
| sim_putchar (c); | |
| } | |
| else if (c == '\b') { /* backspace? */ | |
| if (tto_col > 1) { | |
| sim_putchar(c); | |
| tto_col--; | |
| } | |
| } | |
| else { /* normal */ | |
| tto_wrap(); | |
| sim_putchar(c); | |
| tto_col++; | |
| } | |
| return SCPE_OK; | |
| } | |
| /* Reset routine */ | |
| t_stat tty_reset (DEVICE *dptr) | |
| { | |
| sim_activate (&tty_unit[UTTI], tty_unit[UTTI].wait); /* activate poll */ | |
| sim_cancel (&tty_unit[UTTO]); /* cancel output */ | |
| tti_unlock = tti_flag = 0; /* tty locked */ | |
| tto_col = 1; | |
| return SCPE_OK; | |
| } | |
| /* Set tab stops at fixed modulus */ | |
| t_stat tty_set_fixtabs (UNIT *uptr, int32 val, CONST char *cptr, void *desc) | |
| { | |
| int32 i; | |
| for (i = 0; i < TTO_COLMAX; i++) { | |
| if ((val != 0) && (i != 0) && ((i % val) == 0)) | |
| tto_tabs[i] = 1; | |
| else tto_tabs[i] = 0; | |
| } | |
| return SCPE_OK; | |
| } | |
| /* Assure consistency of 1DIG/2DIG setting */ | |
| t_stat tty_set_12digit (UNIT *uptr, int32 val, CONST char *cptr, void *desc) | |
| { | |
| tty_unit[UTTI].flags = (tty_unit[UTTI].flags & ~UF_1DIG) | val; | |
| tty_unit[UTTO].flags = (tty_unit[UTTO].flags & ~UF_1DIG) | val; | |
| return SCPE_OK; | |
| } |