| 1 | /* pdp11_lp.c: PDP-11 line printer simulator\r |
| 2 | \r |
| 3 | Copyright (c) 1993-2007, 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 LP11 line printer\r |
| 27 | \r |
| 28 | 19-Jan-07 RMS Added UNIT_TEXT flag\r |
| 29 | 07-Jul-05 RMS Removed extraneous externs\r |
| 30 | 19-May-03 RMS Revised for new conditional compilation scheme\r |
| 31 | 25-Apr-03 RMS Revised for extended file support\r |
| 32 | 29-Sep-02 RMS Added vector change/display support\r |
| 33 | New data structures\r |
| 34 | 30-May-02 RMS Widened POS to 32b\r |
| 35 | 06-Jan-02 RMS Added enable/disable support\r |
| 36 | 09-Nov-01 RMS Added VAX support\r |
| 37 | 07-Sep-01 RMS Revised interrupt mechanism\r |
| 38 | 30-Oct-00 RMS Standardized register naming\r |
| 39 | */\r |
| 40 | \r |
| 41 | #if defined (VM_PDP10) /* PDP10 version */\r |
| 42 | #error "LP11 is not supported on the PDP-10!"\r |
| 43 | \r |
| 44 | #elif defined (VM_VAX) /* VAX version */\r |
| 45 | #include "vax_defs.h"\r |
| 46 | \r |
| 47 | #else /* PDP-11 version */\r |
| 48 | #include "pdp11_defs.h"\r |
| 49 | #endif\r |
| 50 | \r |
| 51 | #define LPTCSR_IMP (CSR_ERR + CSR_DONE + CSR_IE) /* implemented */\r |
| 52 | #define LPTCSR_RW (CSR_IE) /* read/write */\r |
| 53 | \r |
| 54 | extern int32 int_req[IPL_HLVL];\r |
| 55 | \r |
| 56 | int32 lpt_csr = 0; /* control/status */\r |
| 57 | int32 lpt_stopioe = 0; /* stop on error */\r |
| 58 | \r |
| 59 | DEVICE lpt_dev;\r |
| 60 | t_stat lpt_rd (int32 *data, int32 PA, int32 access);\r |
| 61 | t_stat lpt_wr (int32 data, int32 PA, int32 access);\r |
| 62 | t_stat lpt_svc (UNIT *uptr);\r |
| 63 | t_stat lpt_reset (DEVICE *dptr);\r |
| 64 | t_stat lpt_attach (UNIT *uptr, char *ptr);\r |
| 65 | t_stat lpt_detach (UNIT *uptr);\r |
| 66 | \r |
| 67 | /* LPT data structures\r |
| 68 | \r |
| 69 | lpt_dev LPT device descriptor\r |
| 70 | lpt_unit LPT unit descriptor\r |
| 71 | lpt_reg LPT register list\r |
| 72 | */\r |
| 73 | \r |
| 74 | DIB lpt_dib = {\r |
| 75 | IOBA_LPT, IOLN_LPT, &lpt_rd, &lpt_wr,\r |
| 76 | 1, IVCL (LPT), VEC_LPT, { NULL }\r |
| 77 | };\r |
| 78 | \r |
| 79 | UNIT lpt_unit = {\r |
| 80 | UDATA (&lpt_svc, UNIT_SEQ+UNIT_ATTABLE+UNIT_TEXT, 0), SERIAL_OUT_WAIT\r |
| 81 | };\r |
| 82 | \r |
| 83 | REG lpt_reg[] = {\r |
| 84 | { GRDATA (BUF, lpt_unit.buf, DEV_RDX, 8, 0) },\r |
| 85 | { GRDATA (CSR, lpt_csr, DEV_RDX, 16, 0) },\r |
| 86 | { FLDATA (INT, IREQ (LPT), INT_V_LPT) },\r |
| 87 | { FLDATA (ERR, lpt_csr, CSR_V_ERR) },\r |
| 88 | { FLDATA (DONE, lpt_csr, CSR_V_DONE) },\r |
| 89 | { FLDATA (IE, lpt_csr, CSR_V_IE) },\r |
| 90 | { DRDATA (POS, lpt_unit.pos, T_ADDR_W), PV_LEFT },\r |
| 91 | { DRDATA (TIME, lpt_unit.wait, 24), PV_LEFT },\r |
| 92 | { FLDATA (STOP_IOE, lpt_stopioe, 0) },\r |
| 93 | { GRDATA (DEVADDR, lpt_dib.ba, DEV_RDX, 32, 0), REG_HRO },\r |
| 94 | { GRDATA (DEVVEC, lpt_dib.vec, DEV_RDX, 16, 0), REG_HRO },\r |
| 95 | { NULL }\r |
| 96 | };\r |
| 97 | \r |
| 98 | MTAB lpt_mod[] = {\r |
| 99 | { MTAB_XTD|MTAB_VDV, 004, "ADDRESS", "ADDRESS",\r |
| 100 | &set_addr, &show_addr, NULL },\r |
| 101 | { MTAB_XTD|MTAB_VDV, 0, "VECTOR", "VECTOR",\r |
| 102 | &set_vec, &show_vec, NULL },\r |
| 103 | { 0 }\r |
| 104 | };\r |
| 105 | \r |
| 106 | DEVICE lpt_dev = {\r |
| 107 | "LPT", &lpt_unit, lpt_reg, lpt_mod,\r |
| 108 | 1, 10, 31, 1, DEV_RDX, 8,\r |
| 109 | NULL, NULL, &lpt_reset,\r |
| 110 | NULL, &lpt_attach, &lpt_detach,\r |
| 111 | &lpt_dib, DEV_DISABLE | DEV_UBUS | DEV_QBUS\r |
| 112 | };\r |
| 113 | \r |
| 114 | /* Line printer routines\r |
| 115 | \r |
| 116 | lpt_rd I/O page read\r |
| 117 | lpt_wr I/O page write\r |
| 118 | lpt_svc process event (printer ready)\r |
| 119 | lpt_reset process reset\r |
| 120 | lpt_attach process attach\r |
| 121 | lpt_detach process detach\r |
| 122 | */\r |
| 123 | \r |
| 124 | t_stat lpt_rd (int32 *data, int32 PA, int32 access)\r |
| 125 | {\r |
| 126 | if ((PA & 02) == 0) *data = lpt_csr & LPTCSR_IMP; /* csr */\r |
| 127 | else *data = lpt_unit.buf; /* buffer */\r |
| 128 | return SCPE_OK;\r |
| 129 | }\r |
| 130 | \r |
| 131 | t_stat lpt_wr (int32 data, int32 PA, int32 access)\r |
| 132 | {\r |
| 133 | if ((PA & 02) == 0) { /* csr */\r |
| 134 | if (PA & 1) return SCPE_OK;\r |
| 135 | if ((data & CSR_IE) == 0) CLR_INT (LPT);\r |
| 136 | else if ((lpt_csr & (CSR_DONE + CSR_IE)) == CSR_DONE)\r |
| 137 | SET_INT (LPT);\r |
| 138 | lpt_csr = (lpt_csr & ~LPTCSR_RW) | (data & LPTCSR_RW);\r |
| 139 | }\r |
| 140 | else {\r |
| 141 | if ((PA & 1) == 0) lpt_unit.buf = data & 0177; /* buffer */\r |
| 142 | lpt_csr = lpt_csr & ~CSR_DONE;\r |
| 143 | CLR_INT (LPT);\r |
| 144 | if ((lpt_unit.buf == 015) || (lpt_unit.buf == 014) ||\r |
| 145 | (lpt_unit.buf == 012)) sim_activate (&lpt_unit, lpt_unit.wait);\r |
| 146 | else sim_activate (&lpt_unit, 0);\r |
| 147 | }\r |
| 148 | return SCPE_OK;\r |
| 149 | }\r |
| 150 | \r |
| 151 | t_stat lpt_svc (UNIT *uptr)\r |
| 152 | {\r |
| 153 | lpt_csr = lpt_csr | CSR_ERR | CSR_DONE;\r |
| 154 | if (lpt_csr & CSR_IE) SET_INT (LPT);\r |
| 155 | if ((uptr->flags & UNIT_ATT) == 0)\r |
| 156 | return IORETURN (lpt_stopioe, SCPE_UNATT);\r |
| 157 | fputc (uptr->buf & 0177, uptr->fileref);\r |
| 158 | uptr->pos = ftell (uptr->fileref);\r |
| 159 | if (ferror (uptr->fileref)) {\r |
| 160 | perror ("LPT I/O error");\r |
| 161 | clearerr (uptr->fileref);\r |
| 162 | return SCPE_IOERR;\r |
| 163 | }\r |
| 164 | lpt_csr = lpt_csr & ~CSR_ERR;\r |
| 165 | return SCPE_OK;\r |
| 166 | }\r |
| 167 | \r |
| 168 | t_stat lpt_reset (DEVICE *dptr)\r |
| 169 | {\r |
| 170 | lpt_unit.buf = 0;\r |
| 171 | lpt_csr = CSR_DONE;\r |
| 172 | if ((lpt_unit.flags & UNIT_ATT) == 0) lpt_csr = lpt_csr | CSR_ERR;\r |
| 173 | CLR_INT (LPT);\r |
| 174 | sim_cancel (&lpt_unit); /* deactivate unit */\r |
| 175 | return SCPE_OK;\r |
| 176 | }\r |
| 177 | \r |
| 178 | t_stat lpt_attach (UNIT *uptr, char *cptr)\r |
| 179 | {\r |
| 180 | t_stat reason;\r |
| 181 | \r |
| 182 | lpt_csr = lpt_csr & ~CSR_ERR;\r |
| 183 | reason = attach_unit (uptr, cptr);\r |
| 184 | if ((lpt_unit.flags & UNIT_ATT) == 0) lpt_csr = lpt_csr | CSR_ERR;\r |
| 185 | return reason;\r |
| 186 | }\r |
| 187 | \r |
| 188 | t_stat lpt_detach (UNIT *uptr)\r |
| 189 | {\r |
| 190 | lpt_csr = lpt_csr | CSR_ERR;\r |
| 191 | return detach_unit (uptr);\r |
| 192 | }\r |