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196ba1fc PH |
1 | /* pdp1_lp.c: PDP-1 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 | bused 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 Type 62 line printer for the PDP-1\r | |
27 | \r | |
28 | 19-Jan-07 RMS Added UNIT_TEXT flag\r | |
29 | 21-Dec-06 RMS Added 16-channel SBS support\r | |
30 | 07-Sep-03 RMS Changed ioc to ios\r | |
31 | 23-Jul-03 RMS Fixed bugs in instruction decoding, overprinting\r | |
32 | Revised to detect I/O wait hang\r | |
33 | 25-Apr-03 RMS Revised for extended file support\r | |
34 | 30-May-02 RMS Widened POS to 32b\r | |
35 | 13-Apr-01 RMS Revised for register arrays\r | |
36 | */\r | |
37 | \r | |
38 | #include "pdp1_defs.h"\r | |
39 | \r | |
40 | #define BPTR_MAX 40 /* pointer max */\r | |
41 | #define LPT_BSIZE (BPTR_MAX * 3) /* line size */\r | |
42 | #define BPTR_MASK 077 /* buf ptr mask */\r | |
43 | \r | |
44 | int32 lpt_spc = 0; /* print (0) vs spc */\r | |
45 | int32 lpt_ovrpr = 0; /* overprint */\r | |
46 | int32 lpt_stopioe = 0; /* stop on error */\r | |
47 | int32 lpt_bptr = 0; /* buffer ptr */\r | |
48 | int32 lpt_sbs = 0; /* SBS level */\r | |
49 | char lpt_buf[LPT_BSIZE + 1] = { 0 };\r | |
50 | static const unsigned char lpt_trans[64] = {\r | |
51 | ' ','1','2','3','4','5','6','7','8','9','\'','~','#','V','^','<',\r | |
52 | '0','/','S','T','U','V','W','X','Y','Z','"',',','>','^','-','?',\r | |
53 | '@','J','K','L','M','N','O','P','Q','R','$','=','-',')','-','(',\r | |
54 | '_','A','B','C','D','E','F','G','H','I','*','.','+',']','|','['\r | |
55 | };\r | |
56 | \r | |
57 | extern int32 ios, cpls, iosta;\r | |
58 | extern int32 stop_inst;\r | |
59 | \r | |
60 | t_stat lpt_svc (UNIT *uptr);\r | |
61 | t_stat lpt_reset (DEVICE *dptr);\r | |
62 | \r | |
63 | /* LPT data structures\r | |
64 | \r | |
65 | lpt_dev LPT device descriptor\r | |
66 | lpt_unit LPT unit\r | |
67 | lpt_reg LPT register list\r | |
68 | */\r | |
69 | \r | |
70 | UNIT lpt_unit = {\r | |
71 | UDATA (&lpt_svc, UNIT_SEQ+UNIT_ATTABLE+UNIT_TEXT, 0), SERIAL_OUT_WAIT\r | |
72 | };\r | |
73 | \r | |
74 | REG lpt_reg[] = {\r | |
75 | { ORDATA (BUF, lpt_unit.buf, 8) },\r | |
76 | { FLDATA (PNT, iosta, IOS_V_PNT) },\r | |
77 | { FLDATA (SPC, iosta, IOS_V_SPC) },\r | |
78 | { FLDATA (RPLS, cpls, CPLS_V_LPT) },\r | |
79 | { DRDATA (BPTR, lpt_bptr, 6) },\r | |
80 | { ORDATA (LPT_STATE, lpt_spc, 6), REG_HRO },\r | |
81 | { FLDATA (LPT_OVRPR, lpt_ovrpr, 0), REG_HRO },\r | |
82 | { DRDATA (POS, lpt_unit.pos, T_ADDR_W), PV_LEFT },\r | |
83 | { DRDATA (TIME, lpt_unit.wait, 24), PV_LEFT },\r | |
84 | { FLDATA (STOP_IOE, lpt_stopioe, 0) },\r | |
85 | { BRDATA (LBUF, lpt_buf, 8, 8, LPT_BSIZE) },\r | |
86 | { DRDATA (SBSLVL, lpt_sbs, 4), REG_HRO },\r | |
87 | { NULL }\r | |
88 | };\r | |
89 | \r | |
90 | MTAB lpt_mod[] = {\r | |
91 | { MTAB_XTD|MTAB_VDV, 0, "SBSLVL", "SBSLVL",\r | |
92 | &dev_set_sbs, &dev_show_sbs, (void *) &lpt_sbs },\r | |
93 | { 0 }\r | |
94 | };\r | |
95 | \r | |
96 | DEVICE lpt_dev = {\r | |
97 | "LPT", &lpt_unit, lpt_reg, lpt_mod,\r | |
98 | 1, 10, 31, 1, 8, 8,\r | |
99 | NULL, NULL, &lpt_reset,\r | |
100 | NULL, NULL, NULL,\r | |
101 | NULL, DEV_DISABLE\r | |
102 | };\r | |
103 | \r | |
104 | /* Line printer IOT routine */\r | |
105 | \r | |
106 | int32 lpt (int32 inst, int32 dev, int32 dat)\r | |
107 | {\r | |
108 | int32 i;\r | |
109 | \r | |
110 | if (lpt_dev.flags & DEV_DIS) /* disabled? */\r | |
111 | return (stop_inst << IOT_V_REASON) | dat; /* stop if requested */\r | |
112 | if ((inst & 07000) == 01000) { /* fill buf */\r | |
113 | if (lpt_bptr < BPTR_MAX) { /* limit test ptr */\r | |
114 | i = lpt_bptr * 3; /* cvt to chr ptr */\r | |
115 | lpt_buf[i] = lpt_trans[(dat >> 12) & 077];\r | |
116 | lpt_buf[i + 1] = lpt_trans[(dat >> 6) & 077];\r | |
117 | lpt_buf[i + 2] = lpt_trans[dat & 077];\r | |
118 | }\r | |
119 | lpt_bptr = (lpt_bptr + 1) & BPTR_MASK;\r | |
120 | return dat;\r | |
121 | }\r | |
122 | if ((inst & 07000) == 02000) { /* space */\r | |
123 | iosta = iosta & ~IOS_SPC; /* space, clear flag */\r | |
124 | lpt_spc = (inst >> 6) & 077; /* state = space n */\r | |
125 | }\r | |
126 | else if ((inst & 07000) == 00000) { /* print */\r | |
127 | iosta = iosta & ~IOS_PNT; /* clear flag */\r | |
128 | lpt_spc = 0; /* state = print */\r | |
129 | }\r | |
130 | else return (stop_inst << IOT_V_REASON) | dat; /* not implemented */\r | |
131 | if (GEN_CPLS (inst)) { /* comp pulse? */\r | |
132 | ios = 0; /* clear flop */\r | |
133 | cpls = cpls | CPLS_LPT; /* request completion */\r | |
134 | }\r | |
135 | else cpls = cpls & ~CPLS_LPT;\r | |
136 | sim_activate (&lpt_unit, lpt_unit.wait); /* activate */\r | |
137 | return dat;\r | |
138 | }\r | |
139 | \r | |
140 | /* Unit service, printer is in one of three states\r | |
141 | \r | |
142 | lpt_spc = 000 write buffer to file, set overprint\r | |
143 | lpt_iot = 02x space command x, clear overprint\r | |
144 | */\r | |
145 | \r | |
146 | t_stat lpt_svc (UNIT *uptr)\r | |
147 | {\r | |
148 | int32 i;\r | |
149 | static const char *lpt_cc[] = {\r | |
150 | "\n",\r | |
151 | "\n\n",\r | |
152 | "\n\n\n",\r | |
153 | "\n\n\n\n\n\n",\r | |
154 | "\n\n\n\n\n\n\n\n\n\n\n",\r | |
155 | "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n",\r | |
156 | "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n",\r | |
157 | "\f"\r | |
158 | };\r | |
159 | \r | |
160 | if (cpls & CPLS_LPT) { /* completion pulse? */\r | |
161 | ios = 1; /* restart */\r | |
162 | cpls = cpls & ~CPLS_LPT; /* clr pulse pending */\r | |
163 | }\r | |
164 | dev_req_int (lpt_sbs); /* req interrupt */\r | |
165 | if (lpt_spc) { /* space? */\r | |
166 | iosta = iosta | IOS_SPC; /* set flag */\r | |
167 | if ((uptr->flags & UNIT_ATT) == 0) /* attached? */\r | |
168 | return IORETURN (lpt_stopioe, SCPE_UNATT);\r | |
169 | fputs (lpt_cc[lpt_spc & 07], uptr->fileref); /* print cctl */\r | |
170 | uptr->pos = ftell (uptr->fileref); /* update position */\r | |
171 | if (ferror (uptr->fileref)) { /* error? */\r | |
172 | perror ("LPT I/O error");\r | |
173 | clearerr (uptr->fileref);\r | |
174 | return SCPE_IOERR;\r | |
175 | }\r | |
176 | lpt_ovrpr = 0; /* dont overprint */\r | |
177 | }\r | |
178 | else {\r | |
179 | iosta = iosta | IOS_PNT; /* print */\r | |
180 | if ((uptr->flags & UNIT_ATT) == 0) /* attached? */\r | |
181 | return IORETURN (lpt_stopioe, SCPE_UNATT);\r | |
182 | if (lpt_ovrpr) fputc ('\r', uptr->fileref); /* overprint? */\r | |
183 | fputs (lpt_buf, uptr->fileref); /* print buffer */\r | |
184 | uptr->pos = ftell (uptr->fileref); /* update position */\r | |
185 | if (ferror (uptr->fileref)) { /* test error */\r | |
186 | perror ("LPT I/O error");\r | |
187 | clearerr (uptr->fileref);\r | |
188 | return SCPE_IOERR;\r | |
189 | }\r | |
190 | lpt_bptr = 0;\r | |
191 | for (i = 0; i <= LPT_BSIZE; i++) lpt_buf[i] = 0; /* clear buffer */\r | |
192 | lpt_ovrpr = 1; /* set overprint */\r | |
193 | }\r | |
194 | return SCPE_OK;\r | |
195 | }\r | |
196 | \r | |
197 | /* Reset routine */\r | |
198 | \r | |
199 | t_stat lpt_reset (DEVICE *dptr)\r | |
200 | {\r | |
201 | int32 i;\r | |
202 | \r | |
203 | lpt_bptr = 0; /* clear buffer ptr */\r | |
204 | for (i = 0; i <= LPT_BSIZE; i++) lpt_buf[i] = 0; /* clear buffer */\r | |
205 | lpt_spc = 0; /* clear state */\r | |
206 | lpt_ovrpr = 0; /* clear overprint */\r | |
207 | cpls = cpls & ~CPLS_LPT;\r | |
208 | iosta = iosta & ~(IOS_PNT | IOS_SPC); /* clear flags */\r | |
209 | sim_cancel (&lpt_unit); /* deactivate unit */\r | |
210 | return SCPE_OK;\r | |
211 | }\r |