| 1 | /* nova_lp.c: NOVA line printer simulator\r |
| 2 | \r |
| 3 | Copyright (c) 1993-2008, Robert M. Supnik\r |
| 4 | \r |
| 5 | Permission is hereby granted, free of charge, to any person obtaining a\r |
| 6 | copy of this software and associated documentation files (the "Software"),\r |
| 7 | to deal in the Software without restriction, including without limitation\r |
| 8 | the rights to use, copy, modify, merge, publish, distribute, sublicense,\r |
| 9 | and/or sell copies of the Software, and to permit persons to whom the\r |
| 10 | Software is furnished to do so, subject to the following conditions:\r |
| 11 | \r |
| 12 | The above copyright notice and this permission notice shall be included in\r |
| 13 | all copies or substantial portions of the Software.\r |
| 14 | \r |
| 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r |
| 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r |
| 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\r |
| 18 | ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r |
| 19 | IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r |
| 20 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r |
| 21 | \r |
| 22 | Except as contained in this notice, the name of Robert M Supnik shall not be\r |
| 23 | used in advertising or otherwise to promote the sale, use or other dealings\r |
| 24 | in this Software without prior written authorization from Robert M Supnik.\r |
| 25 | \r |
| 26 | lpt line printer\r |
| 27 | \r |
| 28 | 04-Jul-07 BKR DEV_SET/CLR macros now used,\r |
| 29 | <FF>, <CR>, <LF> output character delay now contingent upon non-zero TIME value,\r |
| 30 | LPT can now be DISABLED\r |
| 31 | 19-Jan-07 RMS Added UNIT_TEXT\r |
| 32 | 25-Apr-03 RMS Revised for extended file support\r |
| 33 | 30-May-02 RMS Widened POS to 32b\r |
| 34 | \r |
| 35 | \r |
| 36 | Notes:\r |
| 37 | - data currently masked to 7 bits.\r |
| 38 | - if register TIME is non-zero, then delay TIME events if <FF>, <CR> or <LF> seen\r |
| 39 | - register POS show the current file position\r |
| 40 | - register STOP_IOE determines return value issued if output to unattached LPT is attempted\r |
| 41 | */\r |
| 42 | \r |
| 43 | #include "nova_defs.h"\r |
| 44 | \r |
| 45 | extern int32 int_req, dev_busy, dev_done, dev_disable;\r |
| 46 | \r |
| 47 | \r |
| 48 | int32 lpt_stopioe = 0; /* stop on error flag */\r |
| 49 | \r |
| 50 | int32 lpt (int32 pulse, int32 code, int32 AC);\r |
| 51 | t_stat lpt_svc (UNIT *uptr);\r |
| 52 | t_stat lpt_reset (DEVICE *dptr);\r |
| 53 | \r |
| 54 | /* LPT data structures\r |
| 55 | \r |
| 56 | lpt_dev LPT device descriptor\r |
| 57 | lpt_unit LPT unit descriptor\r |
| 58 | lpt_reg LPT register list\r |
| 59 | */\r |
| 60 | \r |
| 61 | DIB lpt_dib = { DEV_LPT, INT_LPT, PI_LPT, &lpt };\r |
| 62 | \r |
| 63 | UNIT lpt_unit = { /* 2007-May-30, bkr */\r |
| 64 | UDATA (&lpt_svc, UNIT_SEQ+UNIT_ATTABLE+UNIT_TEXT, 0), SERIAL_OUT_WAIT\r |
| 65 | };\r |
| 66 | \r |
| 67 | REG lpt_reg[] = {\r |
| 68 | { ORDATA (BUF, lpt_unit.buf, 8) },\r |
| 69 | { FLDATA (BUSY, dev_busy, INT_V_LPT) },\r |
| 70 | { FLDATA (DONE, dev_done, INT_V_LPT) },\r |
| 71 | { FLDATA (DISABLE, dev_disable, INT_V_LPT) },\r |
| 72 | { FLDATA (INT, int_req, INT_V_LPT) },\r |
| 73 | { DRDATA (POS, lpt_unit.pos, T_ADDR_W), PV_LEFT },\r |
| 74 | { DRDATA (TIME, lpt_unit.wait, 24), PV_LEFT },\r |
| 75 | { FLDATA (STOP_IOE, lpt_stopioe, 0) },\r |
| 76 | { NULL }\r |
| 77 | };\r |
| 78 | \r |
| 79 | DEVICE lpt_dev = {\r |
| 80 | "LPT", &lpt_unit, lpt_reg, NULL,\r |
| 81 | 1, 10, 31, 1, 8, 8,\r |
| 82 | NULL, NULL, &lpt_reset,\r |
| 83 | NULL, NULL, NULL,\r |
| 84 | &lpt_dib, DEV_DISABLE\r |
| 85 | };\r |
| 86 | \r |
| 87 | \r |
| 88 | /* IOT routine */\r |
| 89 | \r |
| 90 | int32 lpt (int32 pulse, int32 code, int32 AC)\r |
| 91 | {\r |
| 92 | if (code == ioDOA)\r |
| 93 | lpt_unit.buf = AC & 0177 ;\r |
| 94 | \r |
| 95 | switch (pulse)\r |
| 96 | { /* decode IR<8:9> */\r |
| 97 | case iopS: /* start */\r |
| 98 | DEV_SET_BUSY( INT_LPT ) ;\r |
| 99 | DEV_CLR_DONE( INT_LPT ) ;\r |
| 100 | DEV_UPDATE_INTR ;\r |
| 101 | if ( lpt_unit.wait )\r |
| 102 | if ( (lpt_unit.buf == 015)\r |
| 103 | || (lpt_unit.buf == 014)\r |
| 104 | || (lpt_unit.buf == 012)\r |
| 105 | )\r |
| 106 | {\r |
| 107 | sim_activate (&lpt_unit, lpt_unit.wait);\r |
| 108 | break ;\r |
| 109 | }\r |
| 110 | return (lpt_svc (&lpt_unit) << IOT_V_REASON);\r |
| 111 | break;\r |
| 112 | \r |
| 113 | case iopC: /* clear */\r |
| 114 | DEV_CLR_BUSY( INT_LPT ) ;\r |
| 115 | DEV_CLR_DONE( INT_LPT ) ;\r |
| 116 | DEV_UPDATE_INTR ;\r |
| 117 | sim_cancel (&lpt_unit); /* deactivate unit */\r |
| 118 | break;\r |
| 119 | } /* end switch */\r |
| 120 | \r |
| 121 | return 0;\r |
| 122 | }\r |
| 123 | \r |
| 124 | \r |
| 125 | /* Unit service */\r |
| 126 | \r |
| 127 | t_stat lpt_svc (UNIT *uptr)\r |
| 128 | {\r |
| 129 | DEV_CLR_BUSY( INT_LPT ) ;\r |
| 130 | DEV_SET_DONE( INT_LPT ) ;\r |
| 131 | DEV_UPDATE_INTR ;\r |
| 132 | if ((lpt_unit.flags & UNIT_ATT) == 0) /* attached? */\r |
| 133 | return IORETURN (lpt_stopioe, SCPE_UNATT);\r |
| 134 | fputc (uptr->buf, uptr->fileref);\r |
| 135 | uptr->pos = ftell (uptr->fileref);\r |
| 136 | if (ferror (uptr->fileref)) {\r |
| 137 | perror ("LPT I/O error");\r |
| 138 | clearerr (uptr->fileref);\r |
| 139 | return SCPE_IOERR;\r |
| 140 | }\r |
| 141 | return SCPE_OK;\r |
| 142 | }\r |
| 143 | \r |
| 144 | \r |
| 145 | /* Reset routine */\r |
| 146 | \r |
| 147 | t_stat lpt_reset (DEVICE *dptr)\r |
| 148 | {\r |
| 149 | lpt_unit.buf = 0; /* (not DG compatible) */\r |
| 150 | DEV_CLR_BUSY( INT_LPT ) ;\r |
| 151 | DEV_CLR_DONE( INT_LPT ) ;\r |
| 152 | DEV_UPDATE_INTR ;\r |
| 153 | sim_cancel (&lpt_unit); /* deactivate unit */\r |
| 154 | return SCPE_OK;\r |
| 155 | }\r |