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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 |