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196ba1fc PH |
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 |