155 lines
5 KiB
C
155 lines
5 KiB
C
/* nova_lp.c: NOVA line printer simulator
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Copyright (c) 1993-2008, 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 be
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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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04-Jul-07 BKR DEV_SET/CLR macros now used,
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<FF>, <CR>, <LF> output character delay now contingent upon non-zero TIME value,
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LPT can now be DISABLED
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19-Jan-07 RMS Added UNIT_TEXT
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25-Apr-03 RMS Revised for extended file support
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30-May-02 RMS Widened POS to 32b
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Notes:
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- data currently masked to 7 bits.
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- if register TIME is non-zero, then delay TIME events if <FF>, <CR> or <LF> seen
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- register POS show the current file position
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- register STOP_IOE determines return value issued if output to unattached LPT is attempted
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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 flag */
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int32 lpt (int32 pulse, int32 code, int32 AC);
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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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DIB lpt_dib = { DEV_LPT, INT_LPT, PI_LPT, &lpt };
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UNIT lpt_unit = { /* 2007-May-30, bkr */
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UDATA (&lpt_svc, UNIT_SEQ+UNIT_ATTABLE+UNIT_TEXT, 0), SERIAL_OUT_WAIT
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};
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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, T_ADDR_W), 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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};
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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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&lpt_dib, DEV_DISABLE
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};
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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)
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lpt_unit.buf = AC & 0177 ;
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switch (pulse)
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{ /* decode IR<8:9> */
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case iopS: /* start */
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DEV_SET_BUSY( INT_LPT ) ;
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DEV_CLR_DONE( INT_LPT ) ;
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DEV_UPDATE_INTR ;
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if ( lpt_unit.wait )
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if ( (lpt_unit.buf == 015)
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|| (lpt_unit.buf == 014)
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|| (lpt_unit.buf == 012)
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)
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{
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sim_activate (&lpt_unit, lpt_unit.wait);
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break ;
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}
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return (lpt_svc (&lpt_unit) << IOT_V_REASON);
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break;
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case iopC: /* clear */
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DEV_CLR_BUSY( INT_LPT ) ;
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DEV_CLR_DONE( INT_LPT ) ;
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DEV_UPDATE_INTR ;
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sim_cancel (&lpt_unit); /* deactivate unit */
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break;
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} /* 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_CLR_BUSY( INT_LPT ) ;
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DEV_SET_DONE( INT_LPT ) ;
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DEV_UPDATE_INTR ;
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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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fputc (uptr->buf, uptr->fileref);
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uptr->pos = ftell (uptr->fileref);
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if (ferror (uptr->fileref)) {
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sim_perror ("LPT I/O error");
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clearerr (uptr->fileref);
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return SCPE_IOERR;
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}
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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; /* (not DG compatible) */
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DEV_CLR_BUSY( INT_LPT ) ;
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DEV_CLR_DONE( INT_LPT ) ;
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DEV_UPDATE_INTR ;
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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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