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196ba1fc PH |
1 | /* nova_clk.c: NOVA real-time clock 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 | clk real-time clock\r | |
27 | \r | |
28 | 04-Jul-07 BKR DEV_SET/CLR macros now used,\r | |
29 | changed CLK name to RTC for DG compatiblity,\r | |
30 | device may now bw DISABLED\r | |
31 | 01-Mar-03 RMS Added SET/SHOW CLK FREQ support\r | |
32 | 03-Oct-02 RMS Added DIB\r | |
33 | 17-Sep-01 RMS Added terminal multiplexor support\r | |
34 | 17-Mar-01 RMS Moved function prototype\r | |
35 | 05-Mar-01 RMS Added clock calibration\r | |
36 | 24-Sep-97 RMS Fixed bug in unit service (found by Charles Owen)\r | |
37 | */\r | |
38 | \r | |
39 | #include "nova_defs.h"\r | |
40 | \r | |
41 | extern int32 int_req, dev_busy, dev_done, dev_disable ;\r | |
42 | \r | |
43 | int32 clk_sel = 0; /* selected freq */\r | |
44 | int32 clk_time[4] = { 16000, 100000, 10000, 1000 }; /* freq table */\r | |
45 | int32 clk_tps[4] = { 60, 10, 100, 1000 }; /* ticks per sec */\r | |
46 | int32 clk_adj[4] = { 1, -5, 2, 20 }; /* tmxr adjust */\r | |
47 | int32 tmxr_poll = 16000; /* tmxr poll */\r | |
48 | \r | |
49 | int32 clk (int32 pulse, int32 code, int32 AC);\r | |
50 | t_stat clk_svc (UNIT *uptr);\r | |
51 | t_stat clk_reset (DEVICE *dptr);\r | |
52 | t_stat clk_set_freq (UNIT *uptr, int32 val, char *cptr, void *desc);\r | |
53 | t_stat clk_show_freq (FILE *st, UNIT *uptr, int32 val, void *desc);\r | |
54 | \r | |
55 | /* CLK data structures\r | |
56 | \r | |
57 | clk_dev CLK device descriptor\r | |
58 | clk_unit CLK unit descriptor\r | |
59 | clk_reg CLK register list\r | |
60 | */\r | |
61 | \r | |
62 | DIB clk_dib = { DEV_CLK, INT_CLK, PI_CLK, &clk };\r | |
63 | \r | |
64 | UNIT clk_unit = { UDATA (&clk_svc, 0, 0) };\r | |
65 | \r | |
66 | REG clk_reg[] = {\r | |
67 | { ORDATA (SELECT, clk_sel, 2) },\r | |
68 | { FLDATA (BUSY, dev_busy, INT_V_CLK) },\r | |
69 | { FLDATA (DONE, dev_done, INT_V_CLK) },\r | |
70 | { FLDATA (DISABLE, dev_disable, INT_V_CLK) },\r | |
71 | { FLDATA (INT, int_req, INT_V_CLK) },\r | |
72 | { DRDATA (TIME0, clk_time[0], 24), REG_NZ + PV_LEFT },\r | |
73 | { DRDATA (TIME1, clk_time[1], 24), REG_NZ + PV_LEFT },\r | |
74 | { DRDATA (TIME2, clk_time[2], 24), REG_NZ + PV_LEFT },\r | |
75 | { DRDATA (TIME3, clk_time[3], 24), REG_NZ + PV_LEFT },\r | |
76 | { DRDATA (TPS0, clk_tps[0], 6), PV_LEFT + REG_HRO },\r | |
77 | { NULL }\r | |
78 | };\r | |
79 | \r | |
80 | MTAB clk_mod[] = {\r | |
81 | { MTAB_XTD|MTAB_VDV, 50, NULL, "50HZ",\r | |
82 | &clk_set_freq, NULL, NULL },\r | |
83 | { MTAB_XTD|MTAB_VDV, 60, NULL, "60HZ",\r | |
84 | &clk_set_freq, NULL, NULL },\r | |
85 | { MTAB_XTD|MTAB_VDV, 0, "LINE", NULL,\r | |
86 | NULL, &clk_show_freq, NULL },\r | |
87 | { 0 }\r | |
88 | };\r | |
89 | \r | |
90 | DEVICE clk_dev = {\r | |
91 | "RTC", &clk_unit, clk_reg, clk_mod,\r | |
92 | 1, 0, 0, 0, 0, 0,\r | |
93 | NULL, NULL, &clk_reset,\r | |
94 | NULL, NULL, NULL,\r | |
95 | &clk_dib, DEV_DISABLE\r | |
96 | };\r | |
97 | \r | |
98 | \r | |
99 | /* IOT routine */\r | |
100 | \r | |
101 | int32 clk (int32 pulse, int32 code, int32 AC)\r | |
102 | {\r | |
103 | if (code == ioDOA) { /* DOA */\r | |
104 | clk_sel = AC & 3; /* save select */\r | |
105 | sim_rtc_init (clk_time[clk_sel]); /* init calibr */\r | |
106 | }\r | |
107 | \r | |
108 | switch (pulse) { /* decode IR<8:9> */\r | |
109 | \r | |
110 | case iopS: /* start */\r | |
111 | DEV_SET_BUSY( INT_CLK ) ;\r | |
112 | DEV_CLR_DONE( INT_CLK ) ;\r | |
113 | DEV_UPDATE_INTR ;\r | |
114 | if (!sim_is_active (&clk_unit)) /* not running? */\r | |
115 | sim_activate (&clk_unit, /* activate */\r | |
116 | sim_rtc_init (clk_time[clk_sel])); /* init calibr */\r | |
117 | break;\r | |
118 | \r | |
119 | case iopC: /* clear */\r | |
120 | DEV_CLR_BUSY( INT_CLK ) ;\r | |
121 | DEV_CLR_DONE( INT_CLK ) ;\r | |
122 | DEV_UPDATE_INTR ;\r | |
123 | sim_cancel (&clk_unit); /* deactivate unit */\r | |
124 | break;\r | |
125 | } /* end switch */\r | |
126 | \r | |
127 | return 0;\r | |
128 | }\r | |
129 | \r | |
130 | /* Unit service */\r | |
131 | \r | |
132 | t_stat clk_svc (UNIT *uptr)\r | |
133 | {\r | |
134 | int32 t;\r | |
135 | \r | |
136 | if ( DEV_IS_BUSY(INT_CLK) )\r | |
137 | {\r | |
138 | DEV_CLR_BUSY( INT_CLK ) ;\r | |
139 | DEV_SET_DONE( INT_CLK ) ;\r | |
140 | DEV_UPDATE_INTR ;\r | |
141 | }\r | |
142 | t = sim_rtc_calb (clk_tps[clk_sel]); /* calibrate delay */\r | |
143 | sim_activate (&clk_unit, t); /* reactivate unit */\r | |
144 | if (clk_adj[clk_sel] > 0) /* clk >= 60Hz? */\r | |
145 | tmxr_poll = t * clk_adj[clk_sel]; /* poll is longer */\r | |
146 | else\r | |
147 | tmxr_poll = t / (-clk_adj[clk_sel]); /* poll is shorter */\r | |
148 | \r | |
149 | return SCPE_OK;\r | |
150 | }\r | |
151 | \r | |
152 | /* Reset routine */\r | |
153 | \r | |
154 | t_stat clk_reset (DEVICE *dptr)\r | |
155 | {\r | |
156 | clk_sel = 0;\r | |
157 | DEV_CLR_BUSY( INT_CLK ) ;\r | |
158 | DEV_CLR_DONE( INT_CLK ) ;\r | |
159 | DEV_UPDATE_INTR ;\r | |
160 | \r | |
161 | sim_cancel (&clk_unit); /* deactivate unit */\r | |
162 | tmxr_poll = clk_time[0]; /* poll is default */\r | |
163 | return SCPE_OK;\r | |
164 | }\r | |
165 | \r | |
166 | /* Set line frequency */\r | |
167 | \r | |
168 | t_stat clk_set_freq (UNIT *uptr, int32 val, char *cptr, void *desc)\r | |
169 | {\r | |
170 | if (cptr) return SCPE_ARG;\r | |
171 | if ((val != 50) && (val != 60)) return SCPE_IERR;\r | |
172 | clk_tps[0] = val;\r | |
173 | return SCPE_OK;\r | |
174 | }\r | |
175 | \r | |
176 | /* Show line frequency */\r | |
177 | \r | |
178 | t_stat clk_show_freq (FILE *st, UNIT *uptr, int32 val, void *desc)\r | |
179 | {\r | |
180 | fprintf (st, (clk_tps[0] == 50)? "50Hz": "60Hz");\r | |
181 | return SCPE_OK;\r | |
182 | }\r |