df6475181c
1. New Features 1.1 GRI-909 - This is a new simulator for the GRI-909. - It has been hand-tested; so far, no software has been discovered. 1.2 VAX - SET CPU CONHALT will cause a HALT instruction to return to the boot ROM console rather than to SIMH. SET CPU SIMHALT restores the default behavior. - BRB/W self at IPL 1F stops the simulator. This is the default behavior of VMS at exit. 1.3 PDP-18b - ATTACH -A PTR/PTP attaches the reader and punch in ASCII mode. In ASCII mode, the reader automatically sets the high order bit of incoming alphabetic data, and the punch clears the high order bit of outgoing data. 1.4 SCP - DO -V echoes commands from the file as they are executed. - Under Windows, execution priority is set BELOW_NORMAL when the simulator is running. 2. Release Notes 2.1 Bugs Fixed - PDP-11 CPU: fixed updating of MMR0 on a memory management error. - VAX FPA: changed function names to avoid conflict with C math library. - 1401 MT: read end of record generates group mark without word mark. - 1401 DP: fixed address generation and checking. - SCP: an EXIT within a DO command will cause the simulator to exit. 3. In Progress - Interdata 16b/32b: coded, not tested. - SDS 940: coded, not tested. - IBM 1620: coded, not tested. If you would like to help with the debugging of the untested simulators, they can be made available by special request.
209 lines
6.5 KiB
C
209 lines
6.5 KiB
C
/* pdp8_tt.c: PDP-8 console terminal simulator
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Copyright (c) 1993-2002, 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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tti,tto KL8E terminal input/output
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30-May-02 RMS Widened POS to 32b
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07-Sep-01 RMS Moved function prototypes
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*/
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#include "pdp8_defs.h"
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#include <ctype.h>
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#define UNIT_V_UC (UNIT_V_UF + 0) /* UC only */
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#define UNIT_UC (1 << UNIT_V_UC)
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extern int32 int_req, int_enable, dev_done, stop_inst;
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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 tti_reset (DEVICE *dptr);
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t_stat tto_reset (DEVICE *dptr);
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/* TTI data structures
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tti_dev TTI device descriptor
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tti_unit TTI unit descriptor
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tti_reg TTI register list
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tti_mod TTI modifiers list
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*/
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UNIT tti_unit = { UDATA (&tti_svc, UNIT_UC, 0), KBD_POLL_WAIT };
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REG tti_reg[] = {
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{ ORDATA (BUF, tti_unit.buf, 8) },
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{ FLDATA (DONE, dev_done, INT_V_TTI) },
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{ FLDATA (ENABLE, int_enable, INT_V_TTI) },
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{ FLDATA (INT, int_req, INT_V_TTI) },
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{ DRDATA (POS, tti_unit.pos, 32), PV_LEFT },
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{ DRDATA (TIME, tti_unit.wait, 24), REG_NZ + PV_LEFT },
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{ FLDATA (UC, tti_unit.flags, UNIT_V_UC), REG_HRO },
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{ NULL } };
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MTAB tti_mod[] = {
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{ UNIT_UC, 0, "lower case", "LC", NULL },
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{ UNIT_UC, UNIT_UC, "upper case", "UC", NULL },
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{ 0 } };
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DEVICE tti_dev = {
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"TTI", &tti_unit, tti_reg, tti_mod,
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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 descriptor
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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, 8) },
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{ FLDATA (DONE, dev_done, INT_V_TTO) },
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{ FLDATA (ENABLE, int_enable, INT_V_TTO) },
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{ FLDATA (INT, int_req, INT_V_TTO) },
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{ DRDATA (POS, tto_unit.pos, 32), 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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/* Terminal input: IOT routine */
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int32 tti (int32 pulse, int32 AC)
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{
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switch (pulse) { /* decode IR<9:11> */
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case 0: /* KCF */
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dev_done = dev_done & ~INT_TTI; /* clear flag */
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int_req = int_req & ~INT_TTI;
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return AC;
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case 1: /* KSF */
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return (dev_done & INT_TTI)? IOT_SKP + AC: AC;
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case 2: /* KCC */
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dev_done = dev_done & ~INT_TTI; /* clear flag */
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int_req = int_req & ~INT_TTI;
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return 0; /* clear AC */
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case 4: /* KRS */
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return (AC | tti_unit.buf); /* return buffer */
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case 5: /* KIE */
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if (AC & 1) int_enable = int_enable | (INT_TTI+INT_TTO);
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else int_enable = int_enable & ~(INT_TTI+INT_TTO);
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int_req = INT_UPDATE; /* update interrupts */
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return AC;
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case 6: /* KRB */
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dev_done = dev_done & ~INT_TTI; /* clear flag */
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int_req = int_req & ~INT_TTI;
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return (tti_unit.buf); /* return buffer */
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default:
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return (stop_inst << IOT_V_REASON) + AC; } /* end switch */
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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 temp;
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sim_activate (&tti_unit, tti_unit.wait); /* continue poll */
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if ((temp = sim_poll_kbd ()) < SCPE_KFLAG) return temp; /* no char or error? */
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temp = temp & 0177;
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if ((tti_unit.flags & UNIT_UC) && islower (temp))
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temp = toupper (temp);
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tti_unit.buf = temp | 0200; /* got char */
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dev_done = dev_done | INT_TTI; /* set done */
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int_req = INT_UPDATE; /* update interrupts */
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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;
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dev_done = dev_done & ~INT_TTI; /* clear done, int */
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int_req = int_req & ~INT_TTI;
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int_enable = int_enable | INT_TTI; /* set enable */
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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 pulse, int32 AC)
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{
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switch (pulse) { /* decode IR<9:11> */
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case 0: /* TLF */
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dev_done = dev_done | INT_TTO; /* set flag */
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int_req = INT_UPDATE; /* update interrupts */
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return AC;
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case 1: /* TSF */
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return (dev_done & INT_TTO)? IOT_SKP + AC: AC;
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case 2: /* TCF */
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dev_done = dev_done & ~INT_TTO; /* clear flag */
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int_req = int_req & ~INT_TTO; /* clear int req */
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return AC;
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case 5: /* SPI */
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return (int_req & (INT_TTI+INT_TTO))? IOT_SKP + AC: AC;
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case 6: /* TLS */
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dev_done = dev_done & ~INT_TTO; /* clear flag */
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int_req = int_req & ~INT_TTO; /* clear int req */
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case 4: /* TPC */
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sim_activate (&tto_unit, tto_unit.wait); /* activate unit */
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tto_unit.buf = AC; /* load buffer */
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return AC;
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default:
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return (stop_inst << IOT_V_REASON) + AC; } /* end switch */
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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 temp;
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dev_done = dev_done | INT_TTO; /* set done */
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int_req = INT_UPDATE; /* update interrupts */
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if ((temp = sim_putchar (tto_unit.buf & 0177)) != SCPE_OK) return temp;
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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;
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dev_done = dev_done & ~INT_TTO; /* clear done, int */
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int_req = int_req & ~INT_TTO;
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int_enable = int_enable | INT_TTO; /* set enable */
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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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