| /* i1620_lp.c: IBM 1443 line printer simulator | |
| Copyright (c) 2002-2015, 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 1443 line printer | |
| 31-Jan-15 TFM Fixed various problems ... see comments in code | |
| 10-Dec-13 RMS Fixed DN wraparound (Bob Armstrong) | |
| Fixed test on VFU 10 (Bob Armstrong) | |
| 19-Jan-07 RMS Added UNIT_TEXT flag | |
| 21-Sep-05 RMS Revised translation tables for 7094/1401 compatibility | |
| 29-Dec-03 RMS Fixed bug in scheduling | |
| 25-Apr-03 RMS Revised for extended file support | |
| */ | |
| #include "i1620_defs.h" | |
| #define LPT_BSIZE 197 /* buffer size */ | |
| #define K_IMM 0x10 /* control now */ | |
| #define K_LIN 0x20 /* spc lines */ | |
| #define K_CH10 0x40 /* chan 10 */ | |
| #define K_LCNT 0x03 /* line count */ | |
| #define K_CHAN 0x0F /* channel */ | |
| extern uint8 M[MAXMEMSIZE]; | |
| extern uint8 ind[NUM_IND]; | |
| extern UNIT cpu_unit; | |
| extern uint32 io_stop; | |
| uint32 cct[CCT_LNT] = { 03 }; /* car ctrl tape */ | |
| int32 cct_lnt = 66, cct_ptr = 0; /* cct len, ptr */ | |
| int32 lpt_bptr = 0; /* lpt buf ptr */ | |
| char lpt_buf[LPT_BSIZE + 1]; /* lpt buf */ | |
| int32 lpt_savctrl = 0; /* saved spc ctrl */ | |
| t_stat lpt_svc (UNIT *uptr); | |
| t_stat lpt_reset (DEVICE *dptr); | |
| t_stat lpt_attach (UNIT *uptr, char *cptr); | |
| void lpt_buf_init (void); | |
| t_stat lpt_num(uint32 pa, uint32 f1, t_bool dump); /* tfm: length parameter removed, not needed */ | |
| t_stat lpt_print (void); | |
| t_stat lpt_space (int32 lines, int32 lflag); | |
| #define CHP(ch,val) ((val) & (1 << (ch))) | |
| /* LPT data structures | |
| lpt_dev LPT device descriptor | |
| lpt_unit LPT unit descriptor | |
| lpt_reg LPT register list | |
| */ | |
| UNIT lpt_unit = { | |
| UDATA (&lpt_svc, UNIT_SEQ+UNIT_ATTABLE+UNIT_TEXT, 50) | |
| }; | |
| REG lpt_reg[] = { | |
| { BRDATA (LBUF, lpt_buf, 8, 8, LPT_BSIZE + 1) }, | |
| { DRDATA (BPTR, lpt_bptr, 8) }, | |
| { HRDATA (PCTL, lpt_savctrl, 8) }, | |
| { FLDATA (PRCHK, ind[IN_PRCHK], 0) }, | |
| { FLDATA (PRCH9, ind[IN_PRCH9], 0) }, | |
| { FLDATA (PRCH12, ind[IN_PRCH12], 0) }, | |
| { FLDATA (PRBSY, ind[IN_PRBSY], 0) }, | |
| { DRDATA (POS, lpt_unit.pos, T_ADDR_W), PV_LEFT }, | |
| { BRDATA (CCT, cct, 8, 32, CCT_LNT) }, | |
| { DRDATA (CCTP, cct_ptr, 8), PV_LEFT }, | |
| { DRDATA (CCTL, cct_lnt, 8), REG_RO + PV_LEFT }, | |
| { NULL } | |
| }; | |
| DEVICE lpt_dev = { | |
| "LPT", &lpt_unit, lpt_reg, NULL, | |
| 1, 10, 31, 1, 8, 7, | |
| NULL, NULL, &lpt_reset, | |
| NULL, &lpt_attach, NULL | |
| }; | |
| /* Data tables */ | |
| /* Numeric (flag plus digit) to lineprinter (ASCII) */ | |
| const int8 num_to_lpt[32] = { | |
| '0', '1', '2', '3', '4', '5', '6', '7', /* tfm: All invalid char treated as errors */ | |
| '8', '9', '|', -1, '@', -1, -1, 'G', /* tfm: @, G only print on DN; else NB is blank */ | |
| '-', 'J', 'K', 'L', 'M', 'N', 'O', 'P', | |
| 'Q', 'R', 'W', -1, '*', -1, -1, 'X' /* tfm: W, *, X only print on DN */ | |
| }; | |
| /* Alphameric (digit pair) to lineprinter (ASCII) */ | |
| const int8 alp_to_lpt[256] = { /* tfm: invalid codes 02, 12, 15, 32, 35, 61 removed */ | |
| ' ', -1, -1, '.', ')', -1, -1, -1, /* 00 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| '+', -1, -1, '$', '*', -1, -1, -1, /* 10 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| '-', '/', '|', ',', '(', -1, -1, -1, /* 20 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, '=', '@', -1, -1, -1, /* 30 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, 'A', 'B', 'C', 'D', 'E', 'F', 'G', /* 40 */ | |
| 'H', 'I', -1, -1, -1, -1, -1, -1, | |
| '-', 'J', 'K', 'L', 'M', 'N', 'O', 'P', /* 50 */ | |
| 'Q', 'R', -1, -1, -1, -1, -1, -1, | |
| -1, -1, 'S', 'T', 'U', 'V', 'W', 'X', /* 60 */ | |
| 'Y', 'Z', -1, -1, -1, -1, -1, -1, | |
| '0', '1', '2', '3', '4', '5', '6', '7', /* 70 */ | |
| '8', '9', -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 80 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 90 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* A0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* B0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* C0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* D0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* E0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* F0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1 | |
| }; | |
| /* Line printer IO routine | |
| - Hard errors halt the system. | |
| - Invalid characters print a blank, set the WRCHK and PRCHK | |
| flags, and halt the system if IO stop is set. | |
| */ | |
| t_stat lpt (uint32 op, uint32 pa, uint32 f0, uint32 f1) | |
| { | |
| int8 lpc; | |
| uint8 z, d; | |
| t_stat r, sta; | |
| sta = SCPE_OK; | |
| sim_cancel (&lpt_unit); /* "stall" until */ | |
| ind[IN_PRBSY] = 0; /* printer free */ | |
| switch (op) { /* decode op */ | |
| case OP_K: /* control */ | |
| lpt_savctrl = (f0 << 4) | f1; /* form ctrl */ | |
| if (lpt_savctrl & K_IMM) /* immediate? */ | |
| return lpt_print (); | |
| break; | |
| case OP_DN: | |
| return lpt_num (pa, f1, TRUE); /* dump numeric (tfm: removed len parm ) */ | |
| case OP_WN: | |
| return lpt_num (pa, f1, FALSE); /* write numeric (tfm: removed len parm ) */ | |
| case OP_WA: | |
| for ( ; lpt_bptr < LPT_BSIZE; lpt_bptr++) { /* only fill buf */ | |
| d = M[pa] & DIGIT; /* get digit */ | |
| z = M[pa - 1] & DIGIT; /* get zone */ | |
| if ((d & REC_MARK) == REC_MARK) /* 8-2 char? */ | |
| break; | |
| lpc = alp_to_lpt[(z << 4) | d]; /* translate pair */ | |
| if (lpc < 0) { /* bad char? */ | |
| ind[IN_WRCHK] = ind[IN_PRCHK] = 1; /* wr chk */ | |
| if (io_stop) /* set return status */ | |
| sta = STOP_INVCHR; | |
| } | |
| lpt_buf[lpt_bptr] = lpc & 0x7F; /* fill buffer */ | |
| pa = ADDR_A (pa, 2); /* incr mem addr */ | |
| } | |
| if ((f1 & 1) == 0) { ; /* print now? */ | |
| r = lpt_print (); /* print line */ | |
| if (r != SCPE_OK) | |
| return r; | |
| } | |
| return sta; | |
| default: /* invalid function */ | |
| return STOP_INVFNC; | |
| } | |
| return SCPE_OK; | |
| } | |
| /* Print numeric */ | |
| t_stat lpt_num (uint32 pa, uint32 f1, t_bool dump) /* tfm: removed len parm and reorganized code */ | |
| { | |
| uint8 d; | |
| int8 lpc; | |
| t_stat r, sta; | |
| sta = SCPE_OK; | |
| for ( ; lpt_bptr < LPT_BSIZE; lpt_bptr++) { /* only fill buf */ | |
| d = M[pa]; /* get data char */ | |
| if (!dump && /* not dumping? */ | |
| ((d & REC_MARK) == REC_MARK)) /* quit on RM or GM */ | |
| break; | |
| lpc = num_to_lpt[d]; /* translate digit */ | |
| if (!dump && /* if not dumping */ | |
| ((d & DIGIT) == NUM_BLANK)) /* translate numeric blank */ | |
| lpc = ' '; /* to normal space */ | |
| if (lpc < 0) { /* bad char? */ | |
| ind[IN_WRCHK] = ind[IN_PRCHK] = 1; /* wr chk */ | |
| if (io_stop) /* set return status */ | |
| sta = STOP_INVCHR; | |
| } | |
| lpt_buf[lpt_bptr] = lpc & 0x7F; /* put char into buffer (tfm: correct increment)*/ | |
| PP (pa); /* incr mem addr */ | |
| } | |
| if ((f1 & 1) == 0) { /* print now? */ | |
| r = lpt_print (); /* print line */ | |
| if (r != SCPE_OK) | |
| return r; | |
| } | |
| return sta; | |
| } | |
| /* Print and space */ | |
| t_stat lpt_print (void) | |
| { | |
| int32 i, chan, ctrl = lpt_savctrl; | |
| if ((lpt_unit.flags & UNIT_ATT) == 0) { /* not attached? */ | |
| ind[IN_PRCHK] = ind[IN_WRCHK] = 1; /* wr, pri check */ | |
| return SCPE_UNATT; | |
| } | |
| ind[IN_PRBSY] = 1; /* print busy */ | |
| sim_activate (&lpt_unit, lpt_unit.wait); /* start timer */ | |
| for (i = LPT_WIDTH; i <= LPT_BSIZE; i++) /* clear unprintable */ | |
| lpt_buf[i] = ' '; | |
| while ((lpt_bptr > 0) && (lpt_buf[lpt_bptr - 1] == ' ')) | |
| lpt_buf[--lpt_bptr] = 0; /* trim buffer */ | |
| if (lpt_bptr) { /* any line? */ | |
| fputs (lpt_buf, lpt_unit.fileref); /* print */ | |
| lpt_unit.pos = ftell (lpt_unit.fileref); /* update pos */ | |
| lpt_buf_init (); /* reinit buf */ | |
| if (ferror (lpt_unit.fileref)) { /* error? */ | |
| ind[IN_PRCHK] = ind[IN_WRCHK] = 1; /* wr, pri check */ | |
| sim_perror ("LPT I/O error"); | |
| clearerr (lpt_unit.fileref); | |
| return SCPE_IOERR; | |
| } | |
| } | |
| lpt_savctrl = 0x61; /* reset ctrl */ | |
| if ((ctrl & K_LIN) == ((ctrl & K_IMM)? 0: K_LIN)) /* space lines? */ | |
| return lpt_space (ctrl & K_LCNT, FALSE); | |
| chan = lpt_savctrl & K_CHAN; /* basic chan */ | |
| if ((lpt_savctrl & K_CH10) == 0) { /* chan 10-12? */ | |
| if (chan == 0) | |
| chan = 10; | |
| else if (chan == 3) | |
| chan = 11; | |
| else if (chan == 4) | |
| chan = 12; | |
| else chan = 0; | |
| } | |
| if ((chan == 0) || (chan > 12)) | |
| return STOP_INVFNC; | |
| for (i = 1; i < cct_lnt + 1; i++) { /* sweep thru cct */ | |
| if (CHP (chan, cct[(cct_ptr + i) % cct_lnt])) | |
| return lpt_space (i, TRUE); | |
| } | |
| return STOP_CCT; /* runaway channel */ | |
| } | |
| /* Space routine - space or skip n lines | |
| Inputs: | |
| count = number of lines to space or skip | |
| sflag = skip (TRUE) or space (FALSE) | |
| */ | |
| t_stat lpt_space (int32 count, int32 sflag) | |
| { | |
| int32 i; | |
| cct_ptr = (cct_ptr + count) % cct_lnt; /* adv cct, mod lnt */ | |
| if (sflag && CHP (0, cct[cct_ptr])) /* skip, top of form? */ | |
| fputs ("\n\f", lpt_unit.fileref); /* nl, ff */ | |
| else { | |
| for (i = 0; i < count; i++) /* count lines */ | |
| fputc ('\n', lpt_unit.fileref); | |
| } | |
| lpt_unit.pos = ftell (lpt_unit.fileref); /* update position */ | |
| ind[IN_PRCH9] = CHP (9, cct[cct_ptr]) != 0; /* set indicators */ | |
| ind[IN_PRCH12] = CHP (12, cct[cct_ptr]) != 0; | |
| if (ferror (lpt_unit.fileref)) { /* error? */ | |
| ind[IN_PRCHK] = ind[IN_WRCHK] = 1; /* wr, pri check */ | |
| sim_perror ("LPT I/O error"); | |
| clearerr (lpt_unit.fileref); | |
| return SCPE_IOERR; | |
| } | |
| return SCPE_OK; | |
| } | |
| /* Unit service - clear printer busy */ | |
| t_stat lpt_svc (UNIT *uptr) | |
| { | |
| ind[IN_PRBSY] = 0; | |
| return SCPE_OK; | |
| } | |
| /* Initialize lpt buffer */ | |
| void lpt_buf_init (void) | |
| { | |
| int32 i; | |
| lpt_bptr = 0; | |
| for (i = 0; i < LPT_WIDTH + 1; i++) | |
| lpt_buf[i] = 0; | |
| return; | |
| } | |
| /* Reset routine */ | |
| t_stat lpt_reset (DEVICE *dptr) | |
| { | |
| lpt_buf_init (); /* clear buffer */ | |
| cct_ptr = 0; /* clear cct ptr */ | |
| lpt_savctrl = 0x61; /* clear cct action */ | |
| ind[IN_PRCHK] = ind[IN_PRBSY] = 0; /* clear indicators */ | |
| ind[IN_PRCH9] = ind[IN_PRCH12] = 0; | |
| return SCPE_OK; | |
| } | |
| /* Attach routine */ | |
| t_stat lpt_attach (UNIT *uptr, char *cptr) | |
| { | |
| lpt_reset (&lpt_dev); | |
| return attach_unit (uptr, cptr); | |
| } |