245 lines
7.7 KiB
C
245 lines
7.7 KiB
C
/* nova_tt1.c: NOVA second terminal simulator
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Copyright (c) 1993-2000, Robert M. Supnik
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Written by Bruce Ray and used with his gracious permission.
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of Robert M Supnik shall not
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be used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from Robert M Supnik.
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tti1 second terminal input
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tto1 second terminal output
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*/
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#include "nova_defs.h"
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#define UNIT_V_DASHER (UNIT_V_UF + 0) /* Dasher mode */
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#define UNIT_DASHER (1 << UNIT_V_DASHER)
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extern int32 int_req, dev_busy, dev_done, dev_disable;
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int32 tti1_stopioe = 0, tto1_stopioe = 0; /* stop on error */
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t_stat tti1_svc (UNIT *uptr);
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t_stat tto1_svc (UNIT *uptr);
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t_stat tti1_reset (DEVICE *dptr);
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t_stat tto1_reset (DEVICE *dptr);
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t_stat tti1_attach (UNIT *uptr, char *ptr);
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t_stat tti1_detach (UNIT *uptr);
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t_stat ttx1_setmod (UNIT *uptr, int32 value);
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/* TTI1 data structures
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tti1_dev TTI1 device descriptor
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tti1_unit TTI1 unit descriptor
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tti1_reg TTI1 register list
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ttx1_mod TTI1/TTO1 modifiers list
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*/
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UNIT tti1_unit = { UDATA (&tti1_svc, UNIT_SEQ+UNIT_ATTABLE, 0), KBD_POLL_WAIT };
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REG tti1_reg[] = {
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{ ORDATA (BUF, tti1_unit.buf, 8) },
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{ FLDATA (BUSY, dev_busy, INT_V_TTI1) },
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{ FLDATA (DONE, dev_done, INT_V_TTI1) },
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{ FLDATA (DISABLE, dev_disable, INT_V_TTI1) },
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{ FLDATA (INT, int_req, INT_V_TTI1) },
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{ DRDATA (POS, tti1_unit.pos, 31), PV_LEFT },
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{ DRDATA (TIME, tti1_unit.wait, 24), REG_NZ + PV_LEFT },
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{ FLDATA (STOP_IOE, tti1_stopioe, 0) },
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{ FLDATA (MODE, tti1_unit.flags, UNIT_V_DASHER), REG_HRO },
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{ NULL } };
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MTAB ttx1_mod[] = {
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{ UNIT_DASHER, 0, "ANSI", "ANSI", &ttx1_setmod },
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{ UNIT_DASHER, UNIT_DASHER, "Dasher", "DASHER", &ttx1_setmod },
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{ 0 } };
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DEVICE tti1_dev = {
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"TTI1", &tti1_unit, tti1_reg, ttx1_mod,
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1, 10, 31, 1, 8, 8,
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NULL, NULL, &tti1_reset,
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NULL, &tti1_attach, &tti1_detach };
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/* TTO1 data structures
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tto1_dev TTO1 device descriptor
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tto1_unit TTO1 unit descriptor
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tto1_reg TTO1 register list
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*/
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UNIT tto1_unit = { UDATA (&tto1_svc, UNIT_SEQ+UNIT_ATTABLE, 0), SERIAL_OUT_WAIT };
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REG tto1_reg[] = {
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{ ORDATA (BUF, tto1_unit.buf, 8) },
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{ FLDATA (BUSY, dev_busy, INT_V_TTO1) },
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{ FLDATA (DONE, dev_done, INT_V_TTO1) },
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{ FLDATA (DISABLE, dev_disable, INT_V_TTO1) },
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{ FLDATA (INT, int_req, INT_V_TTO1) },
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{ DRDATA (POS, tto1_unit.pos, 31), PV_LEFT },
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{ DRDATA (TIME, tto1_unit.wait, 24), PV_LEFT },
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{ FLDATA (STOP_IOE, tto1_stopioe, 0) },
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{ FLDATA (MODE, tto1_unit.flags, UNIT_V_DASHER), REG_HRO },
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{ NULL } };
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DEVICE tto1_dev = {
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"TTO1", &tto1_unit, tto1_reg, ttx1_mod,
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1, 10, 31, 1, 8, 8,
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NULL, NULL, &tto1_reset,
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NULL, NULL, NULL };
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/* Terminal input: IOT routine */
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int32 tti1 (int32 pulse, int32 code, int32 AC)
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{
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int32 iodata;
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iodata = (code == ioDIA)? tti1_unit.buf & 0377: 0;
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switch (pulse) { /* decode IR<8:9> */
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case iopS: /* start */
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dev_busy = dev_busy | INT_TTI1; /* set busy */
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dev_done = dev_done & ~INT_TTI1; /* clear done, int */
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int_req = int_req & ~INT_TTI1;
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break;
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case iopC: /* clear */
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dev_busy = dev_busy & ~INT_TTI1; /* clear busy */
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dev_done = dev_done & ~INT_TTI1; /* clear done, int */
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int_req = int_req & ~INT_TTI1;
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break; } /* end switch */
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return iodata;
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}
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/* Unit service */
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t_stat tti1_svc (UNIT *uptr)
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{
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int32 temp;
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if ((tti1_unit.flags & UNIT_ATT) == 0) /* attached? */
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return IORETURN (tti1_stopioe, SCPE_UNATT);
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sim_activate (&tti1_unit, tti1_unit.wait); /* continue poll */
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if ((temp = getc (tti1_unit.fileref)) == EOF) { /* end of file? */
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if (feof (tti1_unit.fileref)) {
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if (tti1_stopioe) printf ("TTI1 end of file\n");
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else return SCPE_OK; }
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else perror ("TTI1 input error");
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clearerr (tti1_unit.fileref);
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return SCPE_IOERR; }
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tti1_unit.buf = temp & 0177;
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if ((tti1_unit.flags & UNIT_DASHER) && (tti1_unit.buf == '\r'))
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tti1_unit.buf = '\n'; /* Dasher: cr -> nl */
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dev_busy = dev_busy & ~INT_TTI1; /* clear busy */
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dev_done = dev_done | INT_TTI1; /* set done */
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int_req = (int_req & ~INT_DEV) | (dev_done & ~dev_disable);
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tti1_unit.pos = tti1_unit.pos + 1;
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return SCPE_OK;
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}
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/* Reset routine */
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t_stat tti1_reset (DEVICE *dptr)
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{
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tti1_unit.buf = 0;
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dev_busy = dev_busy & ~INT_TTI1; /* clear busy */
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dev_done = dev_done & ~INT_TTI1; /* clear done, int */
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int_req = int_req & ~INT_TTI1;
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if (tti1_unit.flags & UNIT_ATT) /* attached? */
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sim_activate (&tti1_unit, tti1_unit.wait);
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else sim_cancel (&tti1_unit);
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return SCPE_OK;
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}
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/* Attach routine */
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t_stat tti1_attach (UNIT *uptr, char *cptr)
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{
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t_stat reason;
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reason = attach_unit (uptr, cptr);
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if (reason == SCPE_OK) sim_activate (uptr, uptr -> wait);
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return reason;
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}
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/* Detach routine */
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t_stat tti1_detach (UNIT *uptr)
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{
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sim_cancel (uptr);
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return detach_unit (uptr);
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}
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/* Terminal output: IOT routine */
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int32 tto1 (int32 pulse, int32 code, int32 AC)
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{
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if (code == ioDOA) tto1_unit.buf = AC & 0377;
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switch (pulse) { /* decode IR<8:9> */
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case iopS: /* start */
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dev_busy = dev_busy | INT_TTO1; /* set busy */
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dev_done = dev_done & ~INT_TTO1; /* clear done, int */
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int_req = int_req & ~INT_TTO1;
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sim_activate (&tto1_unit, tto1_unit.wait); /* activate unit */
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break;
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case iopC: /* clear */
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dev_busy = dev_busy & ~INT_TTO1; /* clear busy */
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dev_done = dev_done & ~INT_TTO1; /* clear done, int */
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int_req = int_req & ~INT_TTO1;
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sim_cancel (&tto1_unit); /* deactivate unit */
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break; } /* end switch */
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return 0;
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}
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/* Unit service */
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t_stat tto1_svc (UNIT *uptr)
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{
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int32 c ;
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dev_busy = dev_busy & ~INT_TTO1; /* clear busy */
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dev_done = dev_done | INT_TTO1; /* set done */
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int_req = (int_req & ~INT_DEV) | (dev_done & ~dev_disable);
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if ((tto1_unit.flags & UNIT_ATT) == 0) /* attached? */
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return IORETURN (tto1_stopioe, SCPE_UNATT);
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c = tto1_unit.buf & 0177;
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if ((tto1_unit.flags & UNIT_DASHER) && (c == 031)) c = '\b';
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if (putc (c, tto1_unit.fileref) == EOF) {
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perror ("TTO1 output error");
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clearerr (tto1_unit.fileref);
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return SCPE_IOERR; }
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tto1_unit.pos = tto1_unit.pos + 1;
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return SCPE_OK;
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}
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/* Reset routine */
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t_stat tto1_reset (DEVICE *dptr)
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{
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tto1_unit.buf = 0;
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dev_busy = dev_busy & ~INT_TTO1; /* clear busy */
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dev_done = dev_done & ~INT_TTO1; /* clear done, int */
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int_req = int_req & ~INT_TTO1;
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sim_cancel (&tto1_unit); /* deactivate unit */
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return SCPE_OK;
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}
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t_stat ttx1_setmod (UNIT *uptr, int32 value)
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{
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tti1_unit.flags = (tti1_unit.flags & ~UNIT_DASHER) | value;
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tto1_unit.flags = (tto1_unit.flags & ~UNIT_DASHER) | value;
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return SCPE_OK;
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}
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