416 lines
12 KiB
C
416 lines
12 KiB
C
/* pdp1_stddev.c: PDP-1 standard devices
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Copyright (c) 1993-2001, Robert M. Supnik
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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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ptr paper tape reader
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ptp paper tape punch
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tti keyboard
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tto teleprinter
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07-Sep-01 RMS Moved function prototypes
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10-Jun-01 RMS Fixed comment
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30-Oct-00 RMS Standardized device naming
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*/
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#include "pdp1_defs.h"
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#define FIODEC_UC 074
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#define FIODEC_LC 072
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#define UC 0100 /* upper case */
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#define BOTH 0200 /* both cases */
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#define CW 0400 /* char waiting */
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#define TT_WIDTH 077
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extern int32 sbs, ioc, iosta, PF, IO, PC;
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extern int32 M[];
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int32 ptr_rpls = 0, ptr_stopioe = 0, ptr_state = 0;
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int32 ptp_rpls = 0, ptp_stopioe = 0;
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int32 tti_state = 0;
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int32 tto_rpls = 0, tto_state = 0;
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t_stat ptr_svc (UNIT *uptr);
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t_stat ptp_svc (UNIT *uptr);
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t_stat tti_svc (UNIT *uptr);
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t_stat tto_svc (UNIT *uptr);
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t_stat ptr_reset (DEVICE *dptr);
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t_stat ptp_reset (DEVICE *dptr);
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t_stat tti_reset (DEVICE *dptr);
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t_stat tto_reset (DEVICE *dptr);
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t_stat ptr_boot (int32 unitno);
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/* Character translation tables */
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int32 fiodec_to_ascii[128] = {
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' ', '1', '2', '3', '4', '5', '6', '7', /* lower case */
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'8', '9', 0, 0, 0, 0, 0, 0,
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'0', '/', 's', 't', 'u', 'v', 'w', 'x',
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'y', 'z', 0, ',', 0, 0, '\t', 0,
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'@', 'j', 'k', 'l', 'm', 'n', 'o', 'p',
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'q', 'r', 0, 0, '-', ')', '\\', '(',
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0, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
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'h', 'i', '{', '.', '}', '\b', 0, '\r',
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' ', '"', '\'', '~', '#', '!', '&', '<', /* upper case */
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'>', '^', 0, 0, 0, 0, 0, 0,
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'`', '?', 'S', 'T', 'U', 'V', 'W', 'X',
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'Y', 'Z', 0, '=', 0, 0, '\t', 0,
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'_', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
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'Q', 'R', 0, 0, '+', ']', '|', '[',
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0, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
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'H', 'I', '{', '*', '}', '\b', 0, '\r' };
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int32 ascii_to_fiodec[128] = {
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0, 0, 0, 0, 0, 0, 0, 0,
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BOTH+075, BOTH+036, 0, 0, 0, BOTH+077, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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BOTH+0, UC+005, UC+001, UC+004, 0, 0, UC+006, UC+002,
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057, 055, UC+073, UC+054, 033, 054, 073, 021,
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020, 001, 002, 003, 004, 005, 006, 007,
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010, 011, 0, 0, UC+007, UC+033, UC+010, UC+021,
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040, UC+061, UC+062, UC+063, UC+064, UC+065, UC+066, UC+067,
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UC+070, UC+071, UC+041, UC+042, UC+043, UC+044, UC+045, UC+046,
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UC+047, UC+050, UC+051, UC+022, UC+023, UC+024, UC+025, UC+026,
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UC+027, UC+030, UC+031, UC+057, 056, UC+055, UC+011, UC+040,
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UC+020, 061, 062, 063, 064, 065, 066, 067,
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070, 071, 041, 042, 043, 044, 045, 046,
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047, 050, 051, 022, 023, 024, 025, 026,
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027, 030, 031, 0, UC+056, 0, UC+003, BOTH+075 };
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/* PTR data structures
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ptr_dev PTR device descriptor
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ptr_unit PTR unit
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ptr_reg PTR register list
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*/
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UNIT ptr_unit = {
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UDATA (&ptr_svc, UNIT_SEQ+UNIT_ATTABLE, 0), SERIAL_IN_WAIT };
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REG ptr_reg[] = {
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{ ORDATA (BUF, ptr_unit.buf, 18) },
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{ FLDATA (DONE, iosta, IOS_V_PTR) },
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{ FLDATA (RPLS, ptr_rpls, 0) },
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{ ORDATA (STATE, ptr_state, 5), REG_HRO },
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{ DRDATA (POS, ptr_unit.pos, 31), PV_LEFT },
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{ DRDATA (TIME, ptr_unit.wait, 24), PV_LEFT },
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{ FLDATA (STOP_IOE, ptr_stopioe, 0) },
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{ NULL } };
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DEVICE ptr_dev = {
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"PTR", &ptr_unit, ptr_reg, NULL,
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1, 10, 31, 1, 8, 8,
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NULL, NULL, &ptr_reset,
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&ptr_boot, NULL, NULL };
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/* PTP data structures
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ptp_dev PTP device descriptor
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ptp_unit PTP unit
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ptp_reg PTP register list
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*/
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UNIT ptp_unit = {
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UDATA (&ptp_svc, UNIT_SEQ+UNIT_ATTABLE, 0), SERIAL_OUT_WAIT };
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REG ptp_reg[] = {
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{ ORDATA (BUF, ptp_unit.buf, 8) },
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{ FLDATA (DONE, iosta, IOS_V_PTP) },
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{ FLDATA (RPLS, ptp_rpls, 0) },
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{ DRDATA (POS, ptp_unit.pos, 31), PV_LEFT },
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{ DRDATA (TIME, ptp_unit.wait, 24), PV_LEFT },
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{ FLDATA (STOP_IOE, ptp_stopioe, 0) },
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{ NULL } };
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DEVICE ptp_dev = {
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"PTP", &ptp_unit, ptp_reg, NULL,
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1, 10, 31, 1, 8, 8,
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NULL, NULL, &ptp_reset,
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NULL, NULL, NULL };
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/* TTI data structures
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tti_dev TTI device descriptor
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tti_unit TTI unit
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tti_reg TTI register list
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*/
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UNIT tti_unit = { UDATA (&tti_svc, 0, 0), KBD_POLL_WAIT };
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REG tti_reg[] = {
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{ ORDATA (BUF, tti_unit.buf, 6) },
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{ FLDATA (DONE, iosta, IOS_V_TTI) },
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{ ORDATA (STATE, tti_state, 10), REG_HRO },
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{ DRDATA (POS, tti_unit.pos, 31), PV_LEFT },
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{ DRDATA (TIME, tti_unit.wait, 24), REG_NZ + PV_LEFT },
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{ NULL } };
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DEVICE tti_dev = {
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"TTI", &tti_unit, tti_reg, NULL,
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1, 10, 31, 1, 8, 8,
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NULL, NULL, &tti_reset,
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NULL, NULL, NULL };
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/* TTO data structures
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tto_dev TTO device descriptor
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tto_unit TTO unit
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tto_reg TTO register list
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*/
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UNIT tto_unit = { UDATA (&tto_svc, 0, 0), SERIAL_OUT_WAIT };
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REG tto_reg[] = {
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{ ORDATA (BUF, tto_unit.buf, 6) },
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{ FLDATA (DONE, iosta, IOS_V_TTO) },
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{ FLDATA (RPLS, tto_rpls, 0) },
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{ ORDATA (STATE, tto_state, 10), REG_HRO },
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{ DRDATA (POS, tto_unit.pos, 31), PV_LEFT },
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{ DRDATA (TIME, tto_unit.wait, 24), PV_LEFT },
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{ NULL } };
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DEVICE tto_dev = {
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"TTO", &tto_unit, tto_reg, NULL,
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1, 10, 31, 1, 8, 8,
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NULL, NULL, &tto_reset,
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NULL, NULL, NULL };
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/* Paper tape reader: IOT routine */
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int32 ptr (int32 inst, int32 dev, int32 data)
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{
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iosta = iosta & ~IOS_PTR; /* clear flag */
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if (dev == 0030) return ptr_unit.buf; /* RRB */
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ptr_state = (dev == 0002)? 18: 0; /* mode = bin/alp */
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ptr_rpls = 0;
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ptr_unit.buf = 0; /* clear buffer */
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sim_activate (&ptr_unit, ptr_unit.wait);
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if (GEN_CPLS (inst)) { /* comp pulse? */
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ioc = 0;
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ptr_rpls = 1; }
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return data;
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}
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/* Unit service */
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t_stat ptr_svc (UNIT *uptr)
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{
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int32 temp;
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if ((ptr_unit.flags & UNIT_ATT) == 0) /* attached? */
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return IORETURN (ptr_stopioe, SCPE_UNATT);
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if ((temp = getc (ptr_unit.fileref)) == EOF) { /* end of file? */
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if (feof (ptr_unit.fileref)) {
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if (ptr_stopioe) printf ("PTR end of file\n");
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else return SCPE_OK; }
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else perror ("PTR I/O error");
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clearerr (ptr_unit.fileref);
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return SCPE_IOERR; }
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ptr_unit.pos = ptr_unit.pos + 1;
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if (ptr_state == 0) ptr_unit.buf = temp & 0377; /* alpha */
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else if (temp & 0200) { /* binary */
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ptr_state = ptr_state - 6;
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ptr_unit.buf = ptr_unit.buf | ((temp & 077) << ptr_state); }
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if (ptr_state == 0) { /* done? */
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if (ptr_rpls) IO = ptr_unit.buf; /* restart? fill IO */
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iosta = iosta | IOS_PTR; /* set flag */
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sbs = sbs | SB_RQ; /* req seq break */
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ioc = ioc | ptr_rpls; } /* restart */
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else sim_activate (&ptr_unit, ptr_unit.wait); /* get next char */
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return SCPE_OK;
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}
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/* Reset routine */
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t_stat ptr_reset (DEVICE *dptr)
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{
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ptr_state = 0; /* clear state */
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ptr_unit.buf = 0;
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ptr_rpls = 0;
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iosta = iosta & ~IOS_PTR; /* clear flag */
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sim_cancel (&ptr_unit); /* deactivate unit */
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return SCPE_OK;
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}
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/* Bootstrap routine */
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#define BOOT_START 07772
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#define BOOT_LEN (sizeof (boot_rom) / sizeof (int))
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static const int32 boot_rom[] = {
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0730002, /* r, rpb + wait */
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0327776, /* dio x */
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0107776, /* xct x */
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0730002, /* rpb + wait */
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0760400, /* x, halt */
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0607772 /* jmp r */
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};
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t_stat ptr_boot (int32 unitno)
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{
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int32 i;
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for (i = 0; i < BOOT_LEN; i++) M[BOOT_START + i] = boot_rom[i];
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PC = BOOT_START;
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return SCPE_OK;
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}
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/* Paper tape punch: IOT routine */
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int32 ptp (int32 inst, int32 dev, int32 data)
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{
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iosta = iosta & ~IOS_PTP; /* clear flag */
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ptp_rpls = 0;
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ptp_unit.buf = (dev == 0006)? ((data >> 12) | 0200): (data & 0377);
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sim_activate (&ptp_unit, ptp_unit.wait); /* start unit */
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if (GEN_CPLS (inst)) { /* comp pulse? */
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ioc = 0;
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ptp_rpls = 1; }
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return data;
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}
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/* Unit service */
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t_stat ptp_svc (UNIT *uptr)
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{
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iosta = iosta | IOS_PTP; /* set flag */
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sbs = sbs | SB_RQ; /* req seq break */
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ioc = ioc | ptp_rpls; /* process restart */
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if ((ptp_unit.flags & UNIT_ATT) == 0) /* not attached? */
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return IORETURN (ptp_stopioe, SCPE_UNATT);
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if (putc (ptp_unit.buf, ptp_unit.fileref) == EOF) { /* I/O error? */
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perror ("PTP I/O error");
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clearerr (ptp_unit.fileref);
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return SCPE_IOERR; }
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ptp_unit.pos = ptp_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 ptp_reset (DEVICE *dptr)
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{
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ptp_unit.buf = 0; /* clear state */
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ptp_rpls = 0;
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iosta = iosta & ~IOS_PTP; /* clear flag */
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sim_cancel (&ptp_unit); /* deactivate unit */
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return SCPE_OK;
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}
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/* Terminal input: IOT routine */
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int32 tti (int32 inst, int32 dev, int32 data)
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{
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iosta = iosta & ~IOS_TTI; /* clear flag */
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if (inst & (IO_WAIT | IO_CPLS)) /* wait or sync? */
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return (STOP_RSRV << IOT_V_REASON) | (tti_unit.buf & 077);
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return tti_unit.buf & 077;
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}
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/* Unit service */
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t_stat tti_svc (UNIT *uptr)
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{
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int32 in, temp;
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sim_activate (&tti_unit, tti_unit.wait); /* continue poll */
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if (tti_state & CW) { /* char waiting? */
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tti_unit.buf = tti_state & TT_WIDTH; /* return char */
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tti_state = tti_state & ~CW; } /* not waiting */
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else { if ((temp = sim_poll_kbd ()) < SCPE_KFLAG) return temp;
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temp = temp & 0177;
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if (temp == 0177) temp = '\b'; /* rubout? bs */
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sim_putchar (temp); /* echo */
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if (temp == '\r') sim_putchar ('\n'); /* cr? add nl */
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in = ascii_to_fiodec[temp]; /* translate char */
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if (in == 0) return SCPE_OK; /* no xlation? */
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if ((in & BOTH) || ((in & UC) == (tti_state & UC)))
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tti_unit.buf = in & TT_WIDTH;
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else { tti_unit.buf = (in & UC)? FIODEC_UC: FIODEC_LC;
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tti_state = in | CW; } } /* set 2nd waiting */
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iosta = iosta | IOS_TTI; /* set flag */
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sbs = sbs | SB_RQ; /* req seq break */
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PF = PF | 040; /* set prog flag 1 */
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tti_unit.pos = tti_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 tti_reset (DEVICE *dptr)
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{
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tti_unit.buf = 0; /* clear buffer */
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tti_state = 0; /* clear state */
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iosta = iosta & ~IOS_TTI; /* clear flag */
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sim_activate (&tti_unit, tti_unit.wait); /* activate unit */
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return SCPE_OK;
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}
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/* Terminal output: IOT routine */
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int32 tto (int32 inst, int32 dev, int32 data)
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{
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iosta = iosta & ~IOS_TTO; /* clear flag */
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tto_rpls = 0;
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tto_unit.buf = data & TT_WIDTH; /* load buffer */
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sim_activate (&tto_unit, tto_unit.wait); /* activate unit */
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if (GEN_CPLS (inst)) { /* comp pulse? */
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ioc = 0;
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tto_rpls = 1; }
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return data;
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}
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/* Unit service */
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t_stat tto_svc (UNIT *uptr)
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{
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int32 out;
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iosta = iosta | IOS_TTO; /* set flag */
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sbs = sbs | SB_RQ; /* req seq break */
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ioc = ioc | tto_rpls; /* process restart */
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if (tto_unit.buf == FIODEC_UC) { /* upper case? */
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tto_state = UC;
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return SCPE_OK; }
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if (tto_unit.buf == FIODEC_LC) { /* lower case? */
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tto_state = 0;
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return SCPE_OK; }
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out = fiodec_to_ascii[tto_unit.buf | tto_state]; /* translate */
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if (out == 0) return SCPE_OK; /* no translation? */
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sim_putchar (out);
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tto_unit.pos = tto_unit.pos + 1;
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if (out == '\r') { /* cr? add lf */
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sim_putchar ('\n');
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tto_unit.pos = tto_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 tto_reset (DEVICE *dptr)
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{
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tto_unit.buf = 0; /* clear buffer */
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tto_state = 0; /* clear state */
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tto_rpls = 0;
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iosta = iosta & ~IOS_TTO; /* clear flag */
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sim_cancel (&tto_unit); /* deactivate unit */
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return SCPE_OK;
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}
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