| /* sds_lp.c: SDS 940 line printer simulator | |
| Copyright (c) 2001-2008, Robert M. Supnik | |
| Permission is hereby granted, free of charge, to any person obtaining a | |
| copy of this software and associated documentation files (the "Software"), | |
| to deal in the Software without restriction, including without limitation | |
| the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
| and/or sell copies of the Software, and to permit persons to whom the | |
| Software is furnished to do so, subject to the following conditions: | |
| The above copyright notice and this permission notice shall be included in | |
| all copies or substantial portions of the Software. | |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
| ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | |
| IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
| CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| Except as contained in this notice, the name of Robert M Supnik shall not be | |
| used in advertising or otherwise to promote the sale, use or other dealings | |
| in this Software without prior written authorization from Robert M Supnik. | |
| lpt line printer | |
| 24-Nov-08 RMS Fixed loss of carriage control position on space op | |
| 19-Jan-07 RMS Added UNIT_TEXT flag | |
| 25-Apr-03 RMS Revised for extended file support | |
| */ | |
| #include "sds_defs.h" | |
| #define LPT_V_LN 9 | |
| #define LPT_M_LN 07 | |
| #define LPT_GETLN(x) (((x) >> LPT_V_LN) & LPT_M_LN) | |
| #define CHP(ch,val) ((val) & (1 << (ch))) /* CCL chan test */ | |
| #define SET_XFR 1 /* set xfr */ | |
| #define SET_EOR 2 /* print, set eor */ | |
| #define SET_SPC 4 /* space */ | |
| extern uint32 xfr_req; | |
| extern int32 stop_invins, stop_invdev, stop_inviop; | |
| int32 lpt_spc = 0; /* space instr */ | |
| int32 lpt_sta = 0; /* timeout state */ | |
| int32 lpt_bptr = 0; /* line buf ptr */ | |
| int32 lpt_err = 0; /* error */ | |
| int32 lpt_ccl = 1, lpt_ccp = 0; /* cctl lnt, ptr */ | |
| int32 lpt_ctime = 10; /* char time */ | |
| int32 lpt_ptime = 1000; /* print time */ | |
| int32 lpt_stime = 10000; /* space time */ | |
| int32 lpt_stopioe = 1; /* stop on err */ | |
| char lpt_buf[LPT_WIDTH + 1] = { 0 }; /* line buffer */ | |
| uint8 lpt_cct[CCT_LNT] = { 0377 }; /* car ctl tape */ | |
| DSPT lpt_tplt[] = { /* template */ | |
| { 1, 0 }, | |
| { 0, 0 } | |
| }; | |
| t_stat lpt_svc (UNIT *uptr); | |
| t_stat lpt_reset (DEVICE *dptr); | |
| t_stat lpt_attach (UNIT *uptr, CONST char *cptr); | |
| t_stat lpt_crctl (UNIT *uptr, int32 ch); | |
| t_stat lpt_space (UNIT *uptr, int32 cnt); | |
| t_stat lpt_status (UNIT *uptr); | |
| t_stat lpt_bufout (UNIT *uptr); | |
| void lpt_end_op (int32 fl); | |
| t_stat lpt (uint32 fnc, uint32 inst, uint32 *dat); | |
| int8 sds_to_ascii(int8 c); | |
| /* LPT data structures | |
| lpt_dev LPT device descriptor | |
| lpt_unit LPT unit descriptor | |
| lpt_reg LPT register list | |
| */ | |
| DIB lpt_dib = { CHAN_W, DEV_LPT, XFR_LPT, lpt_tplt, &lpt }; | |
| UNIT lpt_unit = { | |
| UDATA (&lpt_svc, UNIT_SEQ+UNIT_ATTABLE+UNIT_TEXT, 0) | |
| }; | |
| REG lpt_reg[] = { | |
| { BRDATA (BUF, lpt_buf, 8, 8, LPT_WIDTH) }, | |
| { DRDATA (BPTR, lpt_bptr, 8), PV_LEFT }, | |
| { FLDATA (XFR, xfr_req, XFR_V_LPT) }, | |
| { FLDATA (ERR, lpt_err, 0) }, | |
| { ORDATA (STA, lpt_sta, 3) }, | |
| { BRDATA (CCT, lpt_cct, 8, 8, CCT_LNT) }, | |
| { DRDATA (CCTP, lpt_ccp, 8), PV_LEFT }, | |
| { DRDATA (CCTL, lpt_ccl, 8), REG_RO + PV_LEFT }, | |
| { ORDATA (SPCINST, lpt_spc, 24) }, | |
| { DRDATA (POS, lpt_unit.pos, T_ADDR_W), PV_LEFT }, | |
| { DRDATA (CTIME, lpt_ctime, 24), REG_NZ + PV_LEFT }, | |
| { DRDATA (PTIME, lpt_ptime, 24), REG_NZ + PV_LEFT }, | |
| { DRDATA (STIME, lpt_stime, 24), REG_NZ + PV_LEFT }, | |
| { FLDATA (STOP_IOE, lpt_stopioe, 0) }, | |
| { NULL } | |
| }; | |
| MTAB lpt_mod[] = { | |
| { MTAB_XTD|MTAB_VDV, 0, "CHANNEL", "CHANNEL", | |
| &set_chan, &show_chan, NULL }, | |
| { 0 } | |
| }; | |
| DEVICE lpt_dev = { | |
| "LPT", &lpt_unit, lpt_reg, lpt_mod, | |
| 1, 10, 31, 1, 8, 7, | |
| NULL, NULL, &lpt_reset, | |
| NULL, &lpt_attach, NULL, | |
| &lpt_dib, DEV_DISABLE | |
| }; | |
| /* Line printer routine | |
| conn - inst = EOM0, dat = NULL | |
| eom1 - inst = EOM1, dat = NULL | |
| sks - inst = SKS, dat = ptr to result | |
| disc - inst = device number, dat = NULL | |
| wreor - inst = device number, dat = NULL | |
| read - inst = device number, dat = ptr to data | |
| write - inst = device number, dat = ptr to result | |
| The line printer is an asynchronous output device, that is, it | |
| can never set the channel rate error flag. | |
| */ | |
| t_stat lpt (uint32 fnc, uint32 inst, uint32 *dat) | |
| { | |
| int32 i, t, new_ch; | |
| char asc; | |
| switch (fnc) { /* case function */ | |
| case IO_CONN: /* connect */ | |
| new_ch = I_GETEOCH (inst); /* get new chan */ | |
| if (new_ch != lpt_dib.chan) /* wrong chan? */ | |
| return SCPE_IERR; | |
| for (i = 0; i < LPT_WIDTH; i++) /* clr buffer */ | |
| lpt_buf[i] = 0; | |
| lpt_bptr = 0; /* clr buf ptr */ | |
| lpt_err = 0; /* err = 0 */ | |
| xfr_req = xfr_req & ~XFR_LPT; /* clr xfr flag */ | |
| lpt_sta = lpt_sta | SET_XFR; /* need xfr */ | |
| sim_activate (&lpt_unit, lpt_ctime); /* start timer */ | |
| break; | |
| case IO_EOM1: /* EOM mode 1 */ | |
| new_ch = I_GETEOCH (inst); /* get new chan */ | |
| if (new_ch != lpt_dib.chan) /* wrong chan? */ | |
| CRETIOP; | |
| if (inst & 0400) { /* space? */ | |
| lpt_spc = inst; /* save instr */ | |
| lpt_sta = lpt_sta | SET_SPC; /* need space */ | |
| sim_cancel (&lpt_unit); /* cancel timer */ | |
| sim_activate (&lpt_unit, lpt_stime); /* start timer */ | |
| } | |
| break; | |
| case IO_DISC: /* disconnect */ | |
| lpt_end_op (0); /* normal term */ | |
| return lpt_bufout (&lpt_unit); /* dump output */ | |
| case IO_WREOR: /* write eor */ | |
| lpt_sta = (lpt_sta | SET_EOR) & ~SET_XFR; /* need eor */ | |
| sim_activate (&lpt_unit, lpt_ptime); /* start timer */ | |
| break; | |
| case IO_SKS: /* SKS */ | |
| new_ch = I_GETSKCH (inst); /* sks chan */ | |
| if (new_ch != lpt_dib.chan) /* wrong chan? */ | |
| return SCPE_IERR; | |
| t = I_GETSKCND (inst); /* sks cond */ | |
| if (((t == 020) && (!CHP (7, lpt_cct[lpt_ccp]))) || /* 14062: !ch 7 */ | |
| ((t == 010) && (lpt_unit.flags & UNIT_ATT)) || /* 12062: !online */ | |
| ((t == 004) && !lpt_err)) /* 11062: !err */ | |
| *dat = 1; | |
| break; | |
| case IO_WRITE: /* write */ | |
| asc = sds_to_ascii(*dat); /* convert data */ | |
| xfr_req = xfr_req & ~XFR_LPT; /* clr xfr flag */ | |
| if (lpt_bptr < LPT_WIDTH) /* store data */ | |
| lpt_buf[lpt_bptr++] = asc; | |
| lpt_sta = lpt_sta | SET_XFR; /* need xfr */ | |
| sim_activate (&lpt_unit, lpt_ctime); /* start ch timer */ | |
| break; | |
| default: | |
| CRETINS; | |
| } | |
| return SCPE_OK; | |
| } | |
| /* Unit service and write */ | |
| t_stat lpt_svc (UNIT *uptr) | |
| { | |
| t_stat r = SCPE_OK; | |
| if (lpt_sta & SET_XFR) /* need lpt xfr? */ | |
| chan_set_ordy (lpt_dib.chan); | |
| if (lpt_sta & SET_EOR) { /* printing? */ | |
| chan_set_flag (lpt_dib.chan, CHF_EOR); /* set eor flg */ | |
| r = lpt_bufout (uptr); /* output buf */ | |
| } | |
| if (lpt_sta & SET_SPC) { /* spacing? */ | |
| if (uptr->flags & UNIT_ATT) { /* attached? */ | |
| int32 ln = LPT_GETLN (lpt_spc); /* get lines, ch */ | |
| if (lpt_spc & 0200) /* n lines? */ | |
| lpt_space (uptr, ln); /* upspace */ | |
| else lpt_crctl (uptr, ln); /* carriage ctl */ | |
| } | |
| r = lpt_status (uptr); /* update status */ | |
| } | |
| lpt_sta = 0; /* clear state */ | |
| return r; | |
| } | |
| /* Trim and output buffer */ | |
| t_stat lpt_bufout (UNIT *uptr) | |
| { | |
| int32 i; | |
| if ((uptr->flags & UNIT_ATT) && lpt_bptr) { /* attached? */ | |
| for (i = LPT_WIDTH - 1; (i >= 0) && (lpt_buf[i] == ' '); i--) | |
| lpt_buf[i] = 0; /* trim line */ | |
| fputs (lpt_buf, uptr->fileref); /* write line */ | |
| lpt_bptr = 0; | |
| } | |
| return lpt_status (uptr); /* return status */ | |
| } | |
| /* Status update after I/O */ | |
| t_stat lpt_status (UNIT *uptr) | |
| { | |
| if (uptr->flags & UNIT_ATT) { /* attached? */ | |
| uptr->pos = ftell (uptr->fileref); /* update position */ | |
| if (ferror (uptr->fileref)) { /* I/O error? */ | |
| lpt_end_op (CHF_EOR | CHF_ERR); /* set err, disc */ | |
| sim_perror ("LPT I/O error"); /* print msg */ | |
| clearerr (uptr->fileref); | |
| return SCPE_IOERR; /* ret error */ | |
| } | |
| } | |
| else { | |
| lpt_end_op (CHF_EOR | CHF_ERR); /* set err, disc */ | |
| CRETIOE (lpt_stopioe, SCPE_UNATT); /* ret error */ | |
| } | |
| return SCPE_OK; | |
| } | |
| /* Terminate LPT operation */ | |
| void lpt_end_op (int32 fl) | |
| { | |
| if (fl) /* set flags */ | |
| chan_set_flag (lpt_dib.chan, fl); | |
| xfr_req = xfr_req & ~XFR_LPT; /* clear xfr */ | |
| sim_cancel (&lpt_unit); /* stop */ | |
| if (fl & CHF_ERR) { /* error? */ | |
| chan_disc (lpt_dib.chan); /* disconnect */ | |
| lpt_err = 1; /* set lpt err */ | |
| } | |
| return; | |
| } | |
| /* Carriage control */ | |
| t_stat lpt_crctl (UNIT *uptr, int32 ch) | |
| { | |
| int32 i, j; | |
| if ((ch == 1) && CHP (ch, lpt_cct[0])) { /* top of form? */ | |
| fputs ("\f\n", uptr->fileref); /* ff + nl */ | |
| lpt_ccp = 0; /* top of page */ | |
| return SCPE_OK; | |
| } | |
| for (i = 1; i < lpt_ccl + 1; i++) { /* sweep thru cct */ | |
| lpt_ccp = (lpt_ccp + 1) % lpt_ccl; /* adv pointer */ | |
| if (CHP (ch, lpt_cct[lpt_ccp])) { /* chan punched? */ | |
| for (j = 0; j < i; j++) | |
| fputc ('\n', uptr->fileref); | |
| return SCPE_OK; | |
| } | |
| } | |
| return STOP_CCT; /* runaway channel */ | |
| } | |
| /* Spacing */ | |
| t_stat lpt_space (UNIT *uptr, int32 cnt) | |
| { | |
| int32 i; | |
| if (cnt == 0) | |
| fputc ('\r', uptr->fileref); | |
| else { | |
| for (i = 0; i < cnt; i++) | |
| fputc ('\n', uptr->fileref); | |
| lpt_ccp = (lpt_ccp + cnt) % lpt_ccl; | |
| } | |
| return SCPE_OK; | |
| } | |
| /* Reset routine */ | |
| t_stat lpt_reset (DEVICE *dptr) | |
| { | |
| chan_disc (lpt_dib.chan); /* disconnect */ | |
| lpt_spc = 0; /* clr state */ | |
| lpt_sta = 0; | |
| xfr_req = xfr_req & ~XFR_LPT; /* clr xfr flag */ | |
| sim_cancel (&lpt_unit); /* deactivate */ | |
| return SCPE_OK; | |
| } | |
| /* Attach routine */ | |
| t_stat lpt_attach (UNIT *uptr, CONST char *cptr) | |
| { | |
| lpt_ccp = 0; /* top of form */ | |
| return attach_unit (uptr, cptr); | |
| } |