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1 | /* hp2100_cpu0.c: HP 1000 unimplemented instruction set stubs\r |
2 | \r | |
3 | Copyright (c) 2006-2008, J. David Bryan\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 | THE AUTHOR 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 the author 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 the author.\r | |
25 | \r | |
26 | CPU0 Unimplemented firmware option instructions\r | |
27 | \r | |
28 | 26-Feb-08 HV Removed and implemented "cpu_vis" and "cpu_signal"\r | |
29 | 22-Nov-07 JDB Removed and implemented "cpu_rte_ema"\r | |
30 | 12-Nov-07 JDB Removed and implemented "cpu_rte_vma" and "cpu_rte_os"\r | |
31 | 01-Dec-06 JDB Removed and implemented "cpu_sis".\r | |
32 | 26-Sep-06 JDB Created\r | |
33 | \r | |
34 | This file contains template simulations for the firmware options that have\r | |
35 | not yet been implemented. When a given firmware option is implemented, it\r | |
36 | should be moved out of this file and into another (or its own, depending on\r | |
37 | complexity).\r | |
38 | \r | |
39 | Primary references:\r | |
40 | - HP 1000 M/E/F-Series Computers Technical Reference Handbook\r | |
41 | (5955-0282, Mar-1980)\r | |
42 | - HP 1000 M/E/F-Series Computers Engineering and Reference Documentation\r | |
43 | (92851-90001, Mar-1981)\r | |
44 | - Macro/1000 Reference Manual (92059-90001, Dec-1992)\r | |
45 | \r | |
46 | Additional references are listed with the associated firmware\r | |
47 | implementations, as are the HP option model numbers pertaining to the\r | |
48 | applicable CPUs.\r | |
49 | */\r | |
50 | \r | |
51 | #include "hp2100_defs.h"\r | |
52 | #include "hp2100_cpu.h"\r | |
53 | #include "hp2100_cpu1.h"\r | |
54 | \r | |
55 | \r | |
56 | t_stat cpu_ds (uint32 IR, uint32 intrq); /* Distributed System */\r | |
57 | \r | |
58 | \r | |
59 | /* Distributed System\r | |
60 | \r | |
61 | Distributed System firmware was provided with the HP 91740A DS/1000 product\r | |
62 | for use with the HP 12771A (12665A) Serial Interface and 12773A Modem\r | |
63 | Interface system interconnection kits. Firmware permitted high-speed\r | |
64 | transfers with minimum impact to the processor. The advent of the\r | |
65 | "intelligent" 12794A and 12825A HDLC cards, the 12793A and 12834A Bisync\r | |
66 | cards, and the 91750A DS-1000/IV software obviated the need for CPU firmware,\r | |
67 | as essentially the firmware was moved onto the I/O cards.\r | |
68 | \r | |
69 | Primary documentation for the DS instructions has not been located. However,\r | |
70 | examination of the DS/1000 sources reveals that two instruction were used by\r | |
71 | the DVA65 Serial Interface driver (91740-18071) and placed in the trap cells\r | |
72 | of the communications interfaces. Presumably they handled interrupts from\r | |
73 | the cards.\r | |
74 | \r | |
75 | Implementation of the DS instructions will also require simulation of the\r | |
76 | 12665A Hardwired Serial Data Interface Card and the 12620A RTE Privileged\r | |
77 | Interrupt Fence. These are required for DS/1000.\r | |
78 | \r | |
79 | Option implementation by CPU was as follows:\r | |
80 | \r | |
81 | 2114 2115 2116 2100 1000-M 1000-E 1000-F\r | |
82 | ------ ------ ------ ------ ------ ------ ------\r | |
83 | N/A N/A N/A N/A 91740A 91740B 91740B\r | |
84 | \r | |
85 | The routines are mapped to instruction codes as follows:\r | |
86 | \r | |
87 | Instr. 1000-M 1000-E/F Description\r | |
88 | ------ ------ -------- ----------------------------------------------\r | |
89 | 105520 105300 "Open loop" (trap cell handler)\r | |
90 | 105521 105301 "Closed loop" (trap cell handler)\r | |
91 | 105522 105302 [unknown]\r | |
92 | [test] 105524 105304 [self test]\r | |
93 | \r | |
94 | Notes:\r | |
95 | \r | |
96 | 1. The E/F-Series opcodes were moved from 105340-357 to 105300-317 at\r | |
97 | revision 1813.\r | |
98 | \r | |
99 | 2. DS/1000 ROM data are available from Bitsavers.\r | |
100 | \r | |
101 | Additional references (documents unavailable):\r | |
102 | - HP 91740A M-Series Distributed System (DS/1000) Firmware Installation\r | |
103 | Manual (91740-90007).\r | |
104 | - HP 91740B Distributed System (DS/1000) Firmware Installation Manual\r | |
105 | (91740-90009).\r | |
106 | */\r | |
107 | \r | |
108 | static const OP_PAT op_ds[16] = {\r | |
109 | OP_N, OP_N, OP_N, OP_N, /* --- --- --- --- */\r | |
110 | OP_N, OP_N, OP_N, OP_N, /* --- --- --- --- */\r | |
111 | OP_N, OP_N, OP_N, OP_N, /* --- --- --- --- */\r | |
112 | OP_N, OP_N, OP_N, OP_N /* --- --- --- --- */\r | |
113 | };\r | |
114 | \r | |
115 | t_stat cpu_ds (uint32 IR, uint32 intrq)\r | |
116 | {\r | |
117 | t_stat reason = SCPE_OK;\r | |
118 | OPS op;\r | |
119 | uint32 entry;\r | |
120 | \r | |
121 | if ((cpu_unit.flags & UNIT_DS) == 0) /* DS option installed? */\r | |
122 | return stop_inst;\r | |
123 | \r | |
124 | entry = IR & 017; /* mask to entry point */\r | |
125 | \r | |
126 | if (op_ds[entry] != OP_N)\r | |
127 | if (reason = cpu_ops (op_ds[entry], op, intrq)) /* get instruction operands */\r | |
128 | return reason;\r | |
129 | \r | |
130 | switch (entry) { /* decode IR<3:0> */\r | |
131 | \r | |
132 | default: /* others undefined */\r | |
133 | reason = stop_inst;\r | |
134 | }\r | |
135 | \r | |
136 | return reason;\r | |
137 | }\r |