Commit | Line | Data |
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7af5ad59 PH |
1 | /3 RF08 NON SYSTEM HANDLER / NULL: |
2 | / | |
3 | / | |
4 | / | |
5 | / | |
6 | / | |
7 | / | |
8 | / | |
9 | / | |
10 | / | |
11 | /COPYRIGHT (C) 1974,1975 BY DIGITAL EQUIPMENT CORPORATION | |
12 | / | |
13 | / | |
14 | / | |
15 | / | |
16 | / | |
17 | / | |
18 | / | |
19 | / | |
20 | / | |
21 | / | |
22 | /THE INFORMATION IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE | |
23 | /AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT | |
24 | /CORPORATION. DIGITAL EQUIPMENT CORPORATION ASSUMES NO RESPONSIBILITY | |
25 | /FOR ANY ERRORS THAT MAY APPEAR IN THIS DOCUMENT. | |
26 | / | |
27 | /THE SOFTWARE DESCRIBED IN THIS DOCUMENT IS FURNISHED TO THE PURCHASER | |
28 | /UNDER A LICENSE FOR USE ON A SINGLE COMPUTER SYSTEM AND CAN BE COPIED | |
29 | /(WITH INCLUSION OF DIGITAL'S COPYRIGHT NOTICE) ONLY FOR USE IN SUCH | |
30 | /SYSTEM, EXCEPT AS MAY OTHERWISE BE PROVIDED IN WRITING BY DIGITAL. | |
31 | / | |
32 | /DIGITAL EQUIPMENT CORPORATION ASSUMES NO RESPONSIBILITY FOR THE USE | |
33 | /OR RELIABILITY OF ITS SOFTWARE ON EQUIPMENT THAT IS NOT SUPPLIED BY | |
34 | /DIGITAL. | |
35 | / | |
36 | / | |
37 | / | |
38 | / | |
39 | / | |
40 | / | |
41 | / | |
42 | / | |
43 | / | |
44 | / | |
45 | \f/ SR | |
46 | ||
47 | RF08=1 /CHANGE TO 0 FOR DF32 HANDLER | |
48 | ||
49 | *0 | |
50 | ||
51 | -2 | |
52 | IFNZRO RF08 < | |
53 | DEVICE RF;DEVICE RF;4064;RF&177;ZBLOCK 2 | |
54 | > | |
55 | IFZERO RF08 < | |
56 | DEVICE DF;DEVICE DF;4124;DF&177;ZBLOCK 2 | |
57 | > | |
58 | DEVICE RF;DEVICE NULL;0240;NULL&177;ZBLOCK 2 | |
59 | ||
60 | SCA=7751 | |
61 | SWC=7750 | |
62 | ||
63 | RFVERSION="A&77 | |
64 | NULLVERSION="A&77 | |
65 | \f *200 | |
66 | ||
67 | INITLC, 0 /PATCH TO 232 TO HAVE NULL STORE ^Z IN BUFFER | |
68 | SYSER, CLA CLL CML RAR /4000 | |
69 | ISZ SYSCNT /TRY AGAIN? | |
70 | SKP CLA | |
71 | JMP SFIELD /WHY BOTHER | |
72 | CLA CLL CMA RTL | |
73 | TAD RF | |
74 | DCA RF /RESET PARAMETERS AND TRY AGAIN | |
75 | JMP RETRY | |
76 | T1, 0 | |
77 | T2, 0 | |
78 | ||
79 | CTLC, 0 | |
80 | KRS | |
81 | AND (177 | |
82 | TAD (-3 | |
83 | SNA CLA | |
84 | KSF | |
85 | JMP I CTLC | |
86 | CIFCDF, CIF CDF 0 /RETURN TO OS/8 IF USER TYPED ^C | |
87 | JMP I S7600 | |
88 | ZBLOCK 224-. | |
89 | IFNZRO .-224 <ADRERR,QQQQ> /ENTRY PT MUST BE RELATIVE 24 | |
90 | \fDF, | |
91 | RF, RFVERSION | |
92 | CLA CLL CMA RTL /-3 | |
93 | DCA SYSCNT /# TRYS ON ERROR | |
94 | RETRY, TAD I RF /HANDLER RUNS IN USER'S DATA FIELD | |
95 | RAL | |
96 | CLA RTL | |
97 | TAD S6603 | |
98 | DCA SFUN /EITHER A READ OR WRITE | |
99 | TAD I RF | |
100 | AND S70 | |
101 | DCA SFIELD /GET FIELD OF BUFFER | |
102 | TAD I RF | |
103 | RAL | |
104 | AND S7600 | |
105 | CIA | |
106 | DCA T1 /SET UP WORD COUNT | |
107 | CLA CMA | |
108 | ISZ RF | |
109 | TAD I RF | |
110 | DCA T2 /BUFFER ADDRESS-1 | |
111 | ISZ RF | |
112 | RDF | |
113 | TAD SCDF | |
114 | DCA RESRDF | |
115 | SCDF, CDF 0 | |
116 | TAD T1 | |
117 | DCA I (SWC | |
118 | TAD T2 | |
119 | DCA I (SCA | |
120 | RESRDF, HLT /RESTORE USER'S DATA FIELD | |
121 | IFZERO RF08 < | |
122 | TAD I RF | |
123 | RTL | |
124 | AND S3700 | |
125 | > | |
126 | TAD SFIELD | |
127 | 6615 /LOAD DISK EXTENDED MEMORY | |
128 | S7600, 7600 | |
129 | IFNZRO RF08 < | |
130 | TAD I RF | |
131 | RTR | |
132 | RTR | |
133 | AND S377 | |
134 | 6643 /LOAD HIGH ORDER | |
135 | > | |
136 | TAD I RF | |
137 | RTR | |
138 | RTR | |
139 | RAR | |
140 | AND S7400 | |
141 | SFUN, HLT /BECOMES DISK IOT.(READ OR WRITE) | |
142 | RDF | |
143 | TAD CIFCDF | |
144 | DCA SFIELD | |
145 | IFZERO RF08 <6622> | |
146 | IFNZRO RF08 <6623> | |
147 | JMP .-1 | |
148 | JMS CTLC | |
149 | ISZ RF | |
150 | 6621 /SKIP ON ERROR | |
151 | IFNZRO RF08 <SKP /SENSE OF SKIP IS REVERSED> | |
152 | JMP SYSER | |
153 | ISZ RF | |
154 | SFIELD, HLT /RETURN TO PROPER FIELD | |
155 | 6601 /CLEAR TROUBLESOME FLAG | |
156 | JMP I RF | |
157 | ||
158 | IFZERO RF08 <S3700, 3700> | |
159 | IFNZRO RF08 <S377, 0377> | |
160 | \fNULL, NULLVERSION | |
161 | CLA | |
162 | RDF | |
163 | TAD CIFCDF | |
164 | DCA NULRET | |
165 | JMS CTLC | |
166 | TAD I NULL /GET FN WORD | |
167 | DCA SFUN | |
168 | ISZ NULL /POINT TO CORE LOC | |
169 | TAD I NULL /GET START OF BUFFER | |
170 | DCA T1 | |
171 | ISZ NULL /POINT TO BLOCK NUMBER | |
172 | ISZ NULL /POINT TO ERROR RETURN | |
173 | TAD SFUN | |
174 | SPA CLA | |
175 | JMP BYE /LEAVE BUFFER ALONE ON A WRITE | |
176 | TAD SFUN | |
177 | AND S70 /ISOLATE FIELD OF BUFFER | |
178 | TAD SCDF | |
179 | DCA NFIELD | |
180 | TAD SFUN | |
181 | CLL RAL | |
182 | AND S7600 /GET NO. OF WDS IN BUFFER | |
183 | CIA | |
184 | DCA T2 | |
185 | TAD INITLC | |
186 | NFIELD, HLT /GO TO FIELD OF BUFFER | |
187 | DCA I T1 /ZERO BUFFER | |
188 | ISZ T1 | |
189 | ISZ T2 | |
190 | JMP .-3 | |
191 | BYE, TAD SFUN | |
192 | RAL /PUT R/W BIT IN LINK | |
193 | CLA CML RAL /AC=1 IF READING | |
194 | SNA | |
195 | ISZ NULL /POINT TO GOOD RETURN IF WRITE | |
196 | NULRET, HLT /BACK TO USER'S DATA FIELD, INST FIELD | |
197 | JMP I NULL /RETURN | |
198 | ||
199 | SYSCNT, 0 | |
200 | S6603, 6603 | |
201 | S70, 70 | |
202 | S7400, 7400 | |
203 | $ | |
204 | \f |