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1 | /* pdp1_defs.h: 18b PDP simulator definitions\r |
2 | \r | |
3 | Copyright (c) 1993-2006, 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 | 21-Dec-06 RMS Added 16-channel sequence break support\r | |
27 | 22-Jul-05 RMS Fixed definition of CPLS_DPY\r | |
28 | 08-Feb-04 PLB Added support for display\r | |
29 | 08-Dec-03 RMS Added support for parallel drum\r | |
30 | 18-Oct-03 RMS Added DECtape off reel message\r | |
31 | 22-Jul-03 RMS Updated for "hardware" RIM loader\r | |
32 | Revised to detect I/O wait hang\r | |
33 | 05-Dec-02 RMS Added IOT skip support (required by drum)\r | |
34 | 14-Apr-99 RMS Changed t_addr to unsigned\r | |
35 | \r | |
36 | The PDP-1 was Digital's first computer. The system design evolved during\r | |
37 | its life, and as a result, specifications are sketchy or contradictory.\r | |
38 | This simulator is based on the 1962 maintenance manual.\r | |
39 | \r | |
40 | This simulator implements the following options:\r | |
41 | \r | |
42 | Automatic multiply/divide Type 10\r | |
43 | Memory extension control Type 15\r | |
44 | Parallel drum Type 23\r | |
45 | Serial drum Type 24\r | |
46 | Graphic display Type 30\r | |
47 | Line printer control Type 62\r | |
48 | Microtape (DECtape) control Type 550\r | |
49 | */\r | |
50 | \r | |
51 | #ifndef _PDP1_DEFS_H_\r | |
52 | #define _PDP1_DEFS_H_ 0\r | |
53 | \r | |
54 | #include "sim_defs.h"\r | |
55 | \r | |
56 | /* Simulator stop codes */\r | |
57 | \r | |
58 | #define STOP_RSRV 1 /* must be 1 */\r | |
59 | #define STOP_HALT 2 /* HALT */\r | |
60 | #define STOP_IBKPT 3 /* breakpoint */\r | |
61 | #define STOP_XCT 4 /* nested XCT's */\r | |
62 | #define STOP_IND 5 /* nested indirects */\r | |
63 | #define STOP_WAIT 6 /* IO wait hang */\r | |
64 | #define STOP_DTOFF 7 /* DECtape off reel */\r | |
65 | #define ERR_RMV 10 /* restrict mode viol */\r | |
66 | \r | |
67 | /* Memory */\r | |
68 | \r | |
69 | #define ASIZE 16 /* address bits */\r | |
70 | #define MAXMEMSIZE (1u << ASIZE) /* max mem size */\r | |
71 | #define AMASK (MAXMEMSIZE - 1) /* address mask */\r | |
72 | #define MEMSIZE (cpu_unit.capac) /* actual memory size */\r | |
73 | #define MEM_ADDR_OK(x) (((uint32) (x)) < MEMSIZE)\r | |
74 | \r | |
75 | /* Architectural constants */\r | |
76 | \r | |
77 | #define SIGN 0400000 /* sign */\r | |
78 | #define DMASK 0777777 /* data mask */\r | |
79 | #define DAMASK 0007777 /* direct addr */\r | |
80 | #define EPCMASK (AMASK & ~DAMASK) /* extended addr */\r | |
81 | #define IA 0010000 /* indirect flag */\r | |
82 | #define IO_WAIT 0010000 /* I/O sync wait */\r | |
83 | #define IO_CPLS 0004000 /* completion pulse */\r | |
84 | #define OP_DAC 0240000 /* DAC */\r | |
85 | #define OP_DIO 0320000 /* DIO */\r | |
86 | #define OP_JMP 0600000 /* JMP */\r | |
87 | #define GEN_CPLS(x) (((x) ^ ((x) << 1)) & IO_WAIT) /* completion pulse? */\r | |
88 | \r | |
89 | /* Program flags/sense switches */\r | |
90 | \r | |
91 | #define PF_V_L 7\r | |
92 | #define PF_V_RNG 6\r | |
93 | #define PF_L (1u << PF_V_L)\r | |
94 | #define PF_RNG (1u << PF_V_RNG)\r | |
95 | #define PF_SS_1 0040\r | |
96 | #define PF_SS_2 0020\r | |
97 | #define PF_SS_3 0010\r | |
98 | #define PF_SS_4 0004\r | |
99 | #define PF_SS_5 0002\r | |
100 | #define PF_SS_6 0001\r | |
101 | #define PF_VR_ALL 0377\r | |
102 | #define PF_SS_ALL 0077\r | |
103 | \r | |
104 | /* Restict mode */\r | |
105 | \r | |
106 | #define RTB_IOT 0400000\r | |
107 | #define RTB_ILL 0200000\r | |
108 | #define RTB_HLT 0100000\r | |
109 | #define RTB_DBK 0040000\r | |
110 | #define RTB_CHR 0020000\r | |
111 | #define RTB_MB_MASK 0017777\r | |
112 | \r | |
113 | #define RM45_V_BNK 14\r | |
114 | #define RM45_M_BNK 003\r | |
115 | #define RM48_V_BNK 12\r | |
116 | #define RM48_M_BNK 017\r | |
117 | \r | |
118 | #define RN45_SIZE 4\r | |
119 | \r | |
120 | /* IOT subroutine return codes */\r | |
121 | \r | |
122 | #define IOT_V_SKP 18 /* skip */\r | |
123 | #define IOT_SKP (1 << IOT_V_SKP)\r | |
124 | #define IOT_V_REASON (IOT_V_SKP + 1) /* reason */\r | |
125 | #define IOT_REASON (1 << IOT_V_REASON)\r | |
126 | #define IORETURN(f,v) ((f)? (v): SCPE_OK) /* stop on error */\r | |
127 | \r | |
128 | /* I/O status flags */\r | |
129 | \r | |
130 | #define IOS_V_LPN 17 /* light pen */\r | |
131 | #define IOS_V_PTR 16 /* paper tape reader */\r | |
132 | #define IOS_V_TTO 15 /* typewriter out */\r | |
133 | #define IOS_V_TTI 14 /* typewriter in */\r | |
134 | #define IOS_V_PTP 13 /* paper tape punch */\r | |
135 | #define IOS_V_DRM 12 /* drum */\r | |
136 | #define IOS_V_SQB 11 /* sequence break */\r | |
137 | #define IOS_V_PNT 3 /* print done */\r | |
138 | #define IOS_V_SPC 2 /* space done */\r | |
139 | #define IOS_V_DCS 1 /* data comm sys */\r | |
140 | #define IOS_V_DRP 0 /* parallel drum busy */\r | |
141 | \r | |
142 | #define IOS_LPN (1 << IOS_V_LPN)\r | |
143 | #define IOS_PTR (1 << IOS_V_PTR)\r | |
144 | #define IOS_TTO (1 << IOS_V_TTO)\r | |
145 | #define IOS_TTI (1 << IOS_V_TTI)\r | |
146 | #define IOS_PTP (1 << IOS_V_PTP)\r | |
147 | #define IOS_DRM (1 << IOS_V_DRM)\r | |
148 | #define IOS_SQB (1 << IOS_V_SQB)\r | |
149 | #define IOS_PNT (1 << IOS_V_PNT)\r | |
150 | #define IOS_SPC (1 << IOS_V_SPC)\r | |
151 | #define IOS_DCS (1 << IOS_V_DCS)\r | |
152 | #define IOS_DRP (1 << IOS_V_DRP)\r | |
153 | \r | |
154 | /* Completion pulses */\r | |
155 | \r | |
156 | #define CPLS_V_PTR 5\r | |
157 | #define CPLS_V_PTP 4\r | |
158 | #define CPLS_V_TTO 3\r | |
159 | #define CPLS_V_LPT 2\r | |
160 | #define CPLS_V_DPY 1\r | |
161 | #define CPLS_PTR (1 << CPLS_V_PTR)\r | |
162 | #define CPLS_PTP (1 << CPLS_V_PTP)\r | |
163 | #define CPLS_TTO (1 << CPLS_V_TTO)\r | |
164 | #define CPLS_LPT (1 << CPLS_V_LPT)\r | |
165 | #define CPLS_DPY (1 << CPLS_V_DPY)\r | |
166 | \r | |
167 | /* One channel sequence break */\r | |
168 | \r | |
169 | #define SB_V_IP 0 /* in progress */\r | |
170 | #define SB_V_RQ 1 /* request */\r | |
171 | #define SB_V_ON 2 /* enabled */\r | |
172 | \r | |
173 | #define SB_IP (1 << SB_V_IP)\r | |
174 | #define SB_RQ (1 << SB_V_RQ)\r | |
175 | #define SB_ON (1 << SB_V_ON)\r | |
176 | \r | |
177 | /* 16 channel sequence break */\r | |
178 | \r | |
179 | #define SBS_LVLS 16 /* num levels */\r | |
180 | #define SBS_LVL_MASK (SBS_LVLS - 1)\r | |
181 | #define SBS_LVL_RMV 14 /* restrict level */\r | |
182 | #define SBS_MASK(x) (1u << (SBS_LVLS - 1 - (x))) /* level to mask */\r | |
183 | \r | |
184 | /* Timers */\r | |
185 | \r | |
186 | #define TMR_CLK 0\r | |
187 | \r | |
188 | /* Device routines */\r | |
189 | \r | |
190 | t_stat dev_req_int (int32 lvl);\r | |
191 | t_stat dev_set_sbs (UNIT *uptr, int32 val, char *cptr, void *desc);\r | |
192 | t_stat dev_show_sbs (FILE *st, UNIT *uptr, int32 val, void *desc);\r | |
193 | \r | |
194 | #endif\r |