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.
117 lines
3.9 KiB
C
117 lines
3.9 KiB
C
/* nova_lp.c: NOVA line printer 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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lpt line printer
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30-May-02 RMS Widened POS to 32b
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*/
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#include "nova_defs.h"
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extern int32 int_req, dev_busy, dev_done, dev_disable;
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int32 lpt_stopioe = 0; /* stop on error */
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t_stat lpt_svc (UNIT *uptr);
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t_stat lpt_reset (DEVICE *dptr);
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/* LPT data structures
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lpt_dev LPT device descriptor
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lpt_unit LPT unit descriptor
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lpt_reg LPT register list
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*/
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UNIT lpt_unit = {
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UDATA (&lpt_svc, UNIT_SEQ+UNIT_ATTABLE, 0), SERIAL_OUT_WAIT };
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REG lpt_reg[] = {
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{ ORDATA (BUF, lpt_unit.buf, 8) },
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{ FLDATA (BUSY, dev_busy, INT_V_LPT) },
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{ FLDATA (DONE, dev_done, INT_V_LPT) },
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{ FLDATA (DISABLE, dev_disable, INT_V_LPT) },
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{ FLDATA (INT, int_req, INT_V_LPT) },
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{ DRDATA (POS, lpt_unit.pos, 32), PV_LEFT },
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{ DRDATA (TIME, lpt_unit.wait, 24), PV_LEFT },
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{ FLDATA (STOP_IOE, lpt_stopioe, 0) },
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{ NULL } };
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DEVICE lpt_dev = {
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"LPT", &lpt_unit, lpt_reg, NULL,
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1, 10, 31, 1, 8, 8,
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NULL, NULL, &lpt_reset,
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NULL, NULL, NULL };
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/* IOT routine */
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int32 lpt (int32 pulse, int32 code, int32 AC)
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{
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if (code == ioDOA) lpt_unit.buf = AC & 0177;
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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_LPT; /* set busy */
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dev_done = dev_done & ~INT_LPT; /* clear done, int */
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int_req = int_req & ~INT_LPT;
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if ((lpt_unit.buf != 015) && (lpt_unit.buf != 014) &&
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(lpt_unit.buf != 012))
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return (lpt_svc (&lpt_unit) << IOT_V_REASON);
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sim_activate (&lpt_unit, lpt_unit.wait);
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break;
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case iopC: /* clear */
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dev_busy = dev_busy & ~INT_LPT; /* clear busy */
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dev_done = dev_done & ~INT_LPT; /* clear done, int */
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int_req = int_req & ~INT_LPT;
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sim_cancel (&lpt_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 lpt_svc (UNIT *uptr)
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{
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dev_busy = dev_busy & ~INT_LPT; /* clear busy */
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dev_done = dev_done | INT_LPT; /* set done */
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int_req = (int_req & ~INT_DEV) | (dev_done & ~dev_disable);
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if ((lpt_unit.flags & UNIT_ATT) == 0) /* attached? */
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return IORETURN (lpt_stopioe, SCPE_UNATT);
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if (putc (lpt_unit.buf, lpt_unit.fileref) == EOF) {
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perror ("LPT I/O error");
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clearerr (lpt_unit.fileref);
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return SCPE_IOERR; }
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lpt_unit.pos = ftell (lpt_unit.fileref);
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return SCPE_OK;
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}
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/* Reset routine */
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t_stat lpt_reset (DEVICE *dptr)
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{
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lpt_unit.buf = 0;
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dev_busy = dev_busy & ~INT_LPT; /* clear busy */
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dev_done = dev_done & ~INT_LPT; /* clear done, int */
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int_req = int_req & ~INT_LPT;
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sim_cancel (&lpt_unit); /* deactivate unit */
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return SCPE_OK;
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}
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