| 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 |