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1 | /* lgp_defs.h: LGP simulator definitions \r |
2 | \r | |
3 | Copyright (c) 2004-2005, 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 | be 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 | \r | |
27 | #ifndef _LGP_DEFS_H_\r | |
28 | #define _LGP_DEFS_H_ 0\r | |
29 | \r | |
30 | #include "sim_defs.h" /* simulator defns */\r | |
31 | \r | |
32 | /* Simulator stop codes */\r | |
33 | \r | |
34 | #define STOP_STOP 1 /* STOP */\r | |
35 | #define STOP_IBKPT 2 /* breakpoint */\r | |
36 | #define STOP_OVF 3 /* overflow */\r | |
37 | #define STOP_NXDEV 4 /* non-existent device */\r | |
38 | #define STOP_STALL 5 /* IO stall */\r | |
39 | \r | |
40 | /* Memory */\r | |
41 | \r | |
42 | #define MEMSIZE 4096 /* memory size */\r | |
43 | #define AMASK 0xFFF /* addr mask */\r | |
44 | #define NTK_30 64\r | |
45 | #define NSC_30 64\r | |
46 | #define SCMASK_30 0x03F /* sector mask */\r | |
47 | #define NTK_21 32\r | |
48 | #define NSC_21 128\r | |
49 | #define SCMASK_21 0x07F\r | |
50 | #define RPM 4000 /* rev/minutes */\r | |
51 | #define WPS ((NSC_30 * RPM) / 60) /* words/second */\r | |
52 | \r | |
53 | /* Architectural constants */\r | |
54 | \r | |
55 | #define SIGN 0x80000000 /* sign */\r | |
56 | #define DMASK 0xFFFFFFFF /* data mask */\r | |
57 | #define MMASK 0xFFFFFFFE /* memory mask */\r | |
58 | \r | |
59 | /* Instruction format */\r | |
60 | \r | |
61 | #define I_M_OP 0xF /* opcode */\r | |
62 | #define I_V_OP 16\r | |
63 | #define I_OP (I_M_OP << I_V_OP)\r | |
64 | #define I_GETOP(x) (((x) >> I_V_OP) & I_M_OP)\r | |
65 | #define I_M_EA AMASK /* address */\r | |
66 | #define I_V_EA 2\r | |
67 | #define I_EA (I_M_EA << I_V_EA)\r | |
68 | #define I_GETEA(x) (((x) >> I_V_EA) & I_M_EA)\r | |
69 | #define I_M_TK 0x3F /* LGP-30 char */\r | |
70 | #define I_V_TK 8 /* LGP-21 device */\r | |
71 | #define I_GETTK(x) (((x) >> I_V_TK) & I_M_TK)\r | |
72 | \r | |
73 | /* Unit flags */\r | |
74 | \r | |
75 | #define UNIT_V_LGP21 (UNIT_V_UF + 0)\r | |
76 | #define UNIT_V_MANI (UNIT_V_UF + 1)\r | |
77 | #define UNIT_V_INPT (UNIT_V_UF + 2)\r | |
78 | #define UNIT_V_OUTPT (UNIT_V_UF + 3)\r | |
79 | #define UNIT_V_IN4B (UNIT_V_UF + 4)\r | |
80 | #define UNIT_V_TTSS_D (UNIT_V_UF + 5)\r | |
81 | #define UNIT_V_LGPH_D (UNIT_V_UF + 6)\r | |
82 | #define UNIT_V_FLEX_D (UNIT_V_UF + 7) /* Flex default */\r | |
83 | #define UNIT_V_FLEX (UNIT_V_UF + 8) /* Flex format */\r | |
84 | #define UNIT_V_NOCS (UNIT_V_UF + 9) /* ignore cond stop */\r | |
85 | #define UNIT_LGP21 (1u << UNIT_V_LGP21)\r | |
86 | #define UNIT_MANI (1u << UNIT_V_MANI)\r | |
87 | #define UNIT_INPT (1u << UNIT_V_INPT)\r | |
88 | #define UNIT_OUTPT (1u << UNIT_V_OUTPT)\r | |
89 | #define UNIT_IN4B (1u << UNIT_V_IN4B)\r | |
90 | #define UNIT_TTSS_D (1u << UNIT_V_TTSS_D)\r | |
91 | #define UNIT_LGPH_D (1u << UNIT_V_LGPH_D)\r | |
92 | #define UNIT_FLEX_D (1u << UNIT_V_FLEX_D)\r | |
93 | #define UNIT_FLEX (1u << UNIT_V_FLEX)\r | |
94 | #define UNIT_NOCS (1u << UNIT_V_NOCS)\r | |
95 | #define Q_LGP21 (cpu_unit.flags & UNIT_LGP21)\r | |
96 | #define Q_MANI (cpu_unit.flags & UNIT_MANI)\r | |
97 | #define Q_INPT (cpu_unit.flags & UNIT_INPT)\r | |
98 | #define Q_OUTPT (cpu_unit.flags & UNIT_OUTPT)\r | |
99 | #define Q_IN4B (cpu_unit.flags & UNIT_IN4B)\r | |
100 | \r | |
101 | /* IO return */\r | |
102 | \r | |
103 | #define IORETURN(f,v) ((f)? (v): SCPE_OK) /* stop on error */\r | |
104 | \r | |
105 | /* Significant characters */\r | |
106 | \r | |
107 | #define FLEX_LC 0x04\r | |
108 | #define FLEX_UC 0x08\r | |
109 | #define FLEX_CR 0x10\r | |
110 | #define FLEX_BS 0x14\r | |
111 | #define FLEX_CSTOP 0x20\r | |
112 | #define FLEX_DEL 0x3F\r | |
113 | \r | |
114 | /* LGP-21 device assignments */\r | |
115 | \r | |
116 | #define DEV_PT 0\r | |
117 | #define DEV_TT 2\r | |
118 | #define DEV_MASK 0x1F\r | |
119 | #define DEV_SHIFT 62\r | |
120 | \r | |
121 | /* Instructions */\r | |
122 | \r | |
123 | enum opcodes {\r | |
124 | OP_Z, OP_B, OP_Y, OP_R,\r | |
125 | OP_I, OP_D, OP_N, OP_M,\r | |
126 | OP_P, OP_E, OP_U, OP_T,\r | |
127 | OP_H, OP_C, OP_A, OP_S\r | |
128 | };\r | |
129 | \r | |
130 | /* Prototypes */\r | |
131 | \r | |
132 | uint32 Read (uint32 ea);\r | |
133 | void Write (uint32 ea, uint32 dat);\r | |
134 | \r | |
135 | #endif\r |