projects / pdp8.git / blame
| Commit | Line | Data |
|---|---|---|
| 81e70d48 PH |
1 | /FORTRN 4 RTS LOADER |
| 2 | / | |
| 3 | / VERSION 5A PT 16-MAY-77 | |
| 4 | / | |
| 5 | / | |
| 6 | / | |
| 7 | / | |
| 8 | / | |
| 9 | // | |
| 10 | / | |
| 11 | / | |
| 12 | / | |
| 13 | / | |
| 14 | /COPYRIGHT (C) 1974, 1975 | |
| 15 | /DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS. | |
| 16 | / | |
| 17 | / | |
| 18 | / | |
| 19 | /THIS SOFTWARE IS FURNISHED UNDER A LICENSE FOR USE ONLY ON A | |
| 20 | /SINGLE COMPUTER SYSTEM AND MAY BE COPIED ONLY WITH THE INCLU- | |
| 21 | /SION OF THE ABOVE COPYRIGHT NOTICE. THIS SOFTWARE, OR ANT OTHER | |
| 22 | /COPIES THEREOF, MAY NOT BR PROVIDED OR OTHERWISE MADE AVAILABLE | |
| 23 | /TO ANY OTHER PERSON EXCEPT FOR USE ON SUCH SYSTEM AND TO ONE WHO | |
| 24 | /AGREES TO THESE LICENSE TERMS. TITLE TO AND OWNERSHIP OF THE | |
| 25 | /SOFTWARE SHALL AT ALL TIMES REMAIN IN DEC. | |
| 26 | / | |
| 27 | / | |
| 28 | /THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT | |
| 29 | /NOTICE AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL | |
| 30 | /EQUIPMRNT COROPATION. | |
| 31 | / | |
| 32 | /DEC ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF ITS | |
| 33 | /SOFTWARE ON EQUIPMENT WHICH IS NOT SUPPLIED BY DEC. | |
| 34 | / | |
| 35 | / | |
| 36 | / | |
| 37 | / | |
| 38 | / | |
| 39 | / | |
| 40 | \f/FORTRAN 4 RTS LOADER - RL | |
| 41 | /WITH DOUBLE PRECSION - MKH | |
| 42 | /AND RTS-8 SUPPORT - R. LARY | |
| 43 | ||
| 44 | /LAST EDITED 5/21/74 | |
| 45 | / | |
| 46 | / CHANGES FOR OS/78 AND OS/8 V3D BY P.T. 5/1/77 | |
| 47 | / .FIXED THE D AND B FORMAT (FPP) BUG | |
| 48 | / .FIXED FIELD OVERFLOW BUG(NO. OF ASTERISKS PRINTED) | |
| 49 | / | |
| 50 | ||
| 51 | /PAGE 0 LOCATIONS FOR RTS LOADER | |
| 52 | ||
| 53 | X0= 10 | |
| 54 | X1= 11 | |
| 55 | X2= 12 | |
| 56 | X3= 13 | |
| 57 | ||
| 58 | HADR= 20 | |
| 59 | UNIT= 21 | |
| 60 | HCWORD= 22 | |
| 61 | MXFLD= 23 | |
| 62 | HLDADR= 24 | |
| 63 | HGHFLD= 25 | |
| 64 | HGHADR= 26 | |
| 65 | RLTMP= 27 | |
| 66 | HDIFF= 30 | |
| 67 | CFLAG= 31 | |
| 68 | ||
| 69 | /DURING MOST OF THE LOAD OPERATION A SECTION OF FIELD 0 RTS | |
| 70 | /IS MOVED UP INTO FIELD 1 AND THE VACATED AREA OF FIELD 0 IS USED | |
| 71 | /TO RUN THE COMMAND DECODER AND TO ACCUMULATE DEVICE HANDLERS. | |
| 72 | ||
| 73 | /*K* THEREFORE, IF THE RTS LOADER IS TO MODIFY ANY CODE BETWEEN | |
| 74 | /"F0HBEG" AND "F0HEND" IT MUST MODIFY IT IN FIELD 1 IN THE "F0TO" AREA. | |
| 75 | ||
| 76 | F0HBEG= 0 | |
| 77 | F0HEND= 3000 | |
| 78 | F0HSAV= 7000 /400 WORDS WHERE DEVICE HANDLERS ARE TEMPORARILY SAVED | |
| 79 | /SO THAT THEY WON'T INITIALIZE THEMSELVES WRONG | |
| 80 | \f/RTS LOADER TABLES | |
| 81 | ||
| 82 | *2000 | |
| 83 | ||
| 84 | IONTBL, ZBLOCK 100 /INTERRUPT ENABLE TABLE - LOW BIT ONLY | |
| 85 | HCWTBL, ZBLOCK 14 /HANDLER CONTROL WORD - ONE PER PAGE (LOTSA WASTE) | |
| 86 | TFTABL, ZBLOCK 45 /TENTATIVE FILE SAVE TABLE | |
| 87 | DVTEMP, ZBLOCK 17 /HANDLER ENTRY TABLE SAVE AREA | |
| 88 | ||
| 89 | *IONTBL+5 /RK8 / RK8E | |
| 90 | 1 | |
| 91 | *IONTBL+16 /DTA | |
| 92 | 1 | |
| 93 | *IONTBL+6 /RF08 IN 4 FLAVORS | |
| 94 | 1;1;1;1 | |
| 95 | *IONTBL+0 /TTY | |
| 96 | 2 /FORMS CONTROL ON TTY | |
| 97 | *IONTBL+4 /LPT | |
| 98 | 2 /FORMS CONTROL ON LPT | |
| 99 | *IONTBL+23 | |
| 100 | 1 | |
| 101 | *IONTBL+25 | |
| 102 | 1 | |
| 103 | PAGE | |
| 104 | \f/RTS LOADER | |
| 105 | ||
| 106 | RTSLDR, JMS I (RTINIT | |
| 107 | JMS I (RTINIT /INITIALIZE WHETHER CHAINED TO OR NOT | |
| 108 | JMP NOCD | |
| 109 | LICD, JMS I (200 | |
| 110 | 5 | |
| 111 | 1404 /.LD DEFAULT EXTENSION | |
| 112 | NOCD, JMS I (TSTSWS /TEST /E,/P,/V AND /H SWITCHES | |
| 113 | TAD I (7617 | |
| 114 | SNA | |
| 115 | JMP LICD | |
| 116 | AND (17 | |
| 117 | JMS I (GETHAN /GET HANDLER TO LOAD WITH | |
| 118 | 0 /DON'T PUT IT ANYWHERE | |
| 119 | TAD I (7620 | |
| 120 | DCA LIBLK | |
| 121 | JMS I (SVHND /COPY HANDLER TO AVOID BAD INITIALIZATION | |
| 122 | CIF 0 | |
| 123 | JMS I HLDADR | |
| 124 | 0100 | |
| 125 | LHDR, QLHDR | |
| 126 | LIBLK, 0 | |
| 127 | JMP LDIOER | |
| 128 | JMS I (RSTHND /RESTORE VIRGIN COPY OF HANDLER | |
| 129 | CDF 0 | |
| 130 | TAD HADR | |
| 131 | DCA I (OVHND | |
| 132 | TAD HCWORD | |
| 133 | DCA I (OVHCDW | |
| 134 | TAD (QUSRLV-1 | |
| 135 | DCA X0 | |
| 136 | AC7776 | |
| 137 | TAD I LHDR | |
| 138 | SZA CLA /VERIFY LOADER IMAGE INPUT | |
| 139 | JMP NOTLI /GOOD THING WE CHECKED! | |
| 140 | TAD DPFPP | |
| 141 | TAD I (QDPFLG /CHECK IF TRYING TO USE D.P. WITHOUT OPTION | |
| 142 | SMA CLA | |
| 143 | JMP .+3 | |
| 144 | JMS I (RLERR /YES - PRINT WARNING MESSAGE | |
| 145 | NODPMS /BUT LET THE FOOL GO ON | |
| 146 | \f/SET UP RTS TABLES FROM LOADER IMAGE | |
| 147 | ||
| 148 | CDF 0 | |
| 149 | TAD (OVLYTB-1 | |
| 150 | DCA X1 | |
| 151 | TAD (-10 | |
| 152 | DCA RLTMP | |
| 153 | OVRELP, TAD I X0 | |
| 154 | DCA I X1 /MOVE USER OVERLAY INFO INTO SWAP TABLE, | |
| 155 | TAD I X0 | |
| 156 | DCA I X1 | |
| 157 | TAD I X0 | |
| 158 | TAD LIBLK /RELOCATING THE BLOCK NUMBERS | |
| 159 | DCA I X1 | |
| 160 | TAD I X0 | |
| 161 | DCA I X1 | |
| 162 | ISZ RLTMP | |
| 163 | JMP OVRELP | |
| 164 | TAD I (QRTSWP | |
| 165 | AND (7770 /TURN THE LOADER INITIAL SWAP WORD | |
| 166 | DCA I (STSWAP+2 | |
| 167 | TAD I (QRTSWP /INTO A DUMMY SWAP WORD AND A JUMP WORD | |
| 168 | AND (7 /SO THAT WE CAN HALT BETWEEN | |
| 169 | TAD (JA /LOADING AND STARTING USERS PROGRAM. | |
| 170 | DCA I (STJUMP | |
| 171 | TAD I (QRTSWP+1 | |
| 172 | DCA I (STJUMP+1 | |
| 173 | TAD I (QHGHAD | |
| 174 | DCA HGHFLD | |
| 175 | CLA IAC | |
| 176 | TAD HGHFLD | |
| 177 | CMA | |
| 178 | DCA I (FCNT | |
| 179 | TAD I (QHGHAD+1 | |
| 180 | DCA HGHADR | |
| 181 | JMS I (GETFIL /GET USER I/O FILES IF ANY | |
| 182 | TAD I (OS8DAT /SALT AWAY OS/8 DATE WORD | |
| 183 | DCA I (VDATE-F0HBEG+F0TO | |
| 184 | STL CLA | |
| 185 | 6141 /TEST IF WE ARE ON A PDP-12 | |
| 186 | 0261 /ROL I 1 - PUTS LINK IN AC11 | |
| 187 | 0002 /PDP | |
| 188 | DCA I (V8OR12+1-F0HBEG+F0TO | |
| 189 | JMS I (MOVE | |
| 190 | CDF 10 | |
| 191 | SPSTRT-1 /MOVE SPECIAL /P START CODE TO LOC 200 | |
| 192 | CDF 10 | |
| 193 | 200-F0HBEG+F0TO-1 /(RELOCATED 200, THAT IS) | |
| 194 | -3 | |
| 195 | JMP I (MOVCOR | |
| 196 | ||
| 197 | DPFPP, 3777 /0 IF D.P. FPP AVAILABLE | |
| 198 | \fNOTLI, JMS I (RLERR | |
| 199 | NOLI | |
| 200 | JMP LICD | |
| 201 | ||
| 202 | LDIOER, JMS I (RLERR | |
| 203 | LIOEMS | |
| 204 | CDF CIF 0 | |
| 205 | JMP I (7605 | |
| 206 | PAGE | |
| 207 | \f/FIGURE OUT CORE LIMITS AND WRITE OUT PG 17600 | |
| 208 | ||
| 209 | MOVCOR, TAD I (HTOP | |
| 210 | TAD HDIFF /GET BOTTOM OF HANDLER AREA | |
| 211 | CIA | |
| 212 | CLL /LENGTH OF HANDLER AREA IN AC | |
| 213 | TAD HGHADR | |
| 214 | SZL /TRICKY CODE - IF (L,AC)=0, AC GETS -1 | |
| 215 | STA /IF (L,AC) =0XXXX, AC GETS 0 | |
| 216 | SNA CLA /IF (L,AC) =1XXXX, AC GETS 1 | |
| 217 | STL STA /THERE OUGHTA BE A SHORTER WAY - | |
| 218 | RAL /I'D APPRECIATE HEARING ONE. | |
| 219 | TAD HGHFLD /USE MAGIC NUMBER TO ADJUST HGHFLD | |
| 220 | CIA /BEFORE WE COMPARE IT TO TOP-OF-CORE | |
| 221 | TAD MXFLD | |
| 222 | SPA CLA | |
| 223 | JMP TOOBIG /ALL THAT WORK FOR NOTHING! | |
| 224 | TAD MXFLD | |
| 225 | CLL RTL | |
| 226 | RAL | |
| 227 | TAD (CDF | |
| 228 | DCA HCDF /PREPARE TO TRANSFER THE HANDLERS | |
| 229 | JMS I (MOVE /BEFORE WE MOVE THE HANDLERS WE SHOULD WRITE | |
| 230 | CDF 10 /OUT PAGE 17600 AND THE RTS CLEANUP CODE | |
| 231 | TFTABL-1 /SINCE THE HANDLERS MAY OVERLAY THEM. | |
| 232 | CDF 10 /SO FIRST MOVE THE TENTATIVE FILE TABLE | |
| 233 | 7600-1 /INTO PAGE 17600 WHERE IT'S SAFE. | |
| 234 | -45 | |
| 235 | CIF 0 | |
| 236 | JMS I (7607 | |
| 237 | 4210 | |
| 238 | 7400 | |
| 239 | 37 /SUITABLE SCRATCH BLOCK | |
| 240 | JMP SYSERR | |
| 241 | TAD HDIFF | |
| 242 | TAD (F0HEND /CHANGE HDIFF FROM AN OFFSET | |
| 243 | DCA HDIFF /TO THE FIRST LOC ABOVE THE HANDLERS. | |
| 244 | \f/SHUFFLE CORE AROUND AND START UP RTS | |
| 245 | ||
| 246 | HLOOP, STA | |
| 247 | TAD HDIFF /WE HAVE TO MOVE THE HANDLERS IN A COCKEYED | |
| 248 | DCA HDIFF /WAY SINCE WE MIGHT BE PARTIALLY SWAPPING | |
| 249 | CDF 0 /CORE BETWEEN FIELD 0 (THE HANDLERS) AND | |
| 250 | STA /FIELD 1 (WHERE WE SAVED FIELD 0) IN 8K SYSTEMS. | |
| 251 | TAD HPTR1 | |
| 252 | DCA HPTR1 | |
| 253 | STA | |
| 254 | TAD HPTR2 | |
| 255 | DCA HPTR2 | |
| 256 | TAD I HPTR1 | |
| 257 | HCDF, HLT /MOVE A HANDLER WORD FROM FIELD 0 | |
| 258 | DCA I HDIFF /TO FIELD N | |
| 259 | CDF 10 | |
| 260 | TAD I HPTR2 /MEANWHILE RESTORE FIELD 0 | |
| 261 | CDF 0 | |
| 262 | DCA I HPTR1 /FROM FIELD 1 | |
| 263 | ISZ HMCT | |
| 264 | JMP HLOOP /DO MORE THAN WE HAVE TO - IT CAN'T HURT | |
| 265 | CDF CIF 0 | |
| 266 | TAD (5606 | |
| 267 | DCA I (7605 /SET UP OS/8 RETURN SEQUENCE TO TRAP TO RTS | |
| 268 | TAD (PDPXIT | |
| 269 | DCA I (7606 /AS RANDOM RESTARTS COULD BE FATAL. | |
| 270 | FPICL /RE-INITIALIZE FPP (IF ANY) | |
| 271 | FPCOM /CLEAR APT POINTER FIELD BITS (IF FPP) | |
| 272 | CLA IAC | |
| 273 | 6654 /LOAD PRINTER BUFFER ON ANALEX PRINTER | |
| 274 | SZA CLA /IS ANALEX PRESENT? | |
| 275 | JMP I (FPSTRT /NO - START UP | |
| 276 | DCA I (LPTEST /IF ANALEX TAKE OUT LPT INTERNAL HANDLER | |
| 277 | LP6652, 6652 /ALSO CLEAR ALL ANALEX FLAGS | |
| 278 | DCA I (LPTSNA | |
| 279 | 6662 /CLEAR BUFFER ON ANALEX | |
| 280 | TAD (6651 | |
| 281 | DCA I (LPTERR /REPLACE LP08 ERROR CODE BY ANALEX | |
| 282 | TAD LP6652 /TO AVOID HANGING ON ANALEX POWER OFF. | |
| 283 | DCA I (LPTERR+2 | |
| 284 | JMP I (FPSTRT | |
| 285 | ||
| 286 | TOOBIG, JMS I (RLERR | |
| 287 | TOOMCH | |
| 288 | OS8RTN, CDF CIF 0 | |
| 289 | JMP I (7605 | |
| 290 | ||
| 291 | SYSERR, JMS I (RLERR | |
| 292 | SYSMSG | |
| 293 | JMP OS8RTN | |
| 294 | ||
| 295 | HPTR1, F0HEND | |
| 296 | HPTR2, F0TO+F0HEND-F0HBEG | |
| 297 | HMCT, F0HBEG-F0HEND | |
| 298 | \f/MOVE ROUTINE | |
| 299 | ||
| 300 | MOVE, 0 /GENERAL MOVE SUBROUTINE | |
| 301 | CDF 10 | |
| 302 | CLA | |
| 303 | TAD MOVE | |
| 304 | DCA X2 | |
| 305 | TAD I MOVE | |
| 306 | DCA FRMFLD | |
| 307 | TAD I X2 | |
| 308 | DCA X3 | |
| 309 | TAD I X2 | |
| 310 | DCA TOFLD | |
| 311 | TAD I X2 | |
| 312 | DCA X1 | |
| 313 | TAD I X2 | |
| 314 | DCA MVC | |
| 315 | FRMFLD, HLT | |
| 316 | TAD I X3 | |
| 317 | TOFLD, HLT | |
| 318 | DCA I X1 | |
| 319 | ISZ MVC | |
| 320 | JMP FRMFLD | |
| 321 | CDF 10 | |
| 322 | JMP I X2 | |
| 323 | MVC, 0 | |
| 324 | ||
| 325 | HNDERR, JMS I (RLERR | |
| 326 | TOMNYH | |
| 327 | JMP OS8RTN | |
| 328 | PAGE | |
| 329 | \f/INITIALIZATION | |
| 330 | ||
| 331 | RTINIT, 0 | |
| 332 | ISZ RTINIT /SKIP RETURN | |
| 333 | JMS I (BAKTST /SEE IF WE'RE RUNNING IN BACKGROUND UNDER RTS-8 | |
| 334 | CIF 0 | |
| 335 | JMS I (CORE | |
| 336 | DCA MXFLD | |
| 337 | CLA IAC | |
| 338 | JMS I (GETION /GET ION BIT FOR SYS HANDLER | |
| 339 | DCA I (HCWTBL+13 /SAVE IT | |
| 340 | SWAB /SET EAE MODE TO B (IF 8/E) | |
| 341 | CLA IAC | |
| 342 | EAEKIL, SHL /ZERO THIS LOCATION TO INHIBIT EAE | |
| 343 | CLA IAC /LOW ORDER BITS 01 | |
| 344 | TAD (-2 | |
| 345 | SNA CLA /TEST FOR 8/E EAE | |
| 346 | JMS I (MOVEAE /YES - SUBSTITUTE PACKAGES | |
| 347 | TAD (APT | |
| 348 | FPST /START FPP ON "STARTE;FEXIT" | |
| 349 | JMP NOFPP /DIDN'T START | |
| 350 | JMS I (MOVE | |
| 351 | CDF 10 | |
| 352 | FPPINT-1 /THE FPP HANDLER AND D.P. I/O PKG IS IN THE | |
| 353 | CDF 0 /SAME LOCATIONS IN FIELD 1 AS THE | |
| 354 | FPPINT-1 /FPP INTERPRETER IN FIELD 0. | |
| 355 | -1000 /COUNT FOR DBL PREC SPACE | |
| 356 | FPRST /FPP HAD BETTER BE DONE BY NOW!! | |
| 357 | AND (4 /GET D.P. STATUS BIT | |
| 358 | SNA CLA | |
| 359 | JMP NOFPP /NO DOUBLE PRECISION | |
| 360 | DCA I (DPFPP /SET FLAG TO INDICATE D.P. AVAILABLE | |
| 361 | CDF 0 | |
| 362 | TAD (DFMT | |
| 363 | DCA I (DF /ENABLE D FORMAT | |
| 364 | TAD (BFMT | |
| 365 | DCA I (BF /AND B FORMAT | |
| 366 | CDF 10 | |
| 367 | \fNOFPP, JMS I (MOVE | |
| 368 | RICDF0, CDF 0 | |
| 369 | F0HBEG-1 | |
| 370 | CDF 10 | |
| 371 | F0TO-1 /MOVE LOWER F0 INTO F1 FOR SAFEKEEPING | |
| 372 | F0HBEG-F0HEND | |
| 373 | CDF 0 | |
| 374 | TAD I (OSJSWD /GET OS/8 STATUS WORD | |
| 375 | AND (6374 /FORCE BITS ON INDICATING NON-RESTARTABLE JOB | |
| 376 | TAD (1003 /AND DESTRUCTIVE CALLS TO CD AND USR | |
| 377 | DCA I (OSJSWD /MEANWHILE FORCING "BATCH SAVED" BIT OFF | |
| 378 | TAD I (7612 | |
| 379 | TAD (-3 /CHECK FOR IN-CORE TD8E'S | |
| 380 | SZA CLA | |
| 381 | JMP NOTDSY | |
| 382 | TAD MXFLD | |
| 383 | CLL RTL | |
| 384 | RAL | |
| 385 | TAD RICDF0 | |
| 386 | DCA TD8EFG /SET TD8E FLAG WHICH IS ALSO CDF | |
| 387 | TAD I (7642 | |
| 388 | AND (70 | |
| 389 | TAD RICDF0 /GET THE FIELD WE'RE COMING FROM | |
| 390 | DCA TD8EFL | |
| 391 | TAD TD8EFG | |
| 392 | IAC | |
| 393 | JMS I (TDSET /REDO THE CDF'S IN F0 | |
| 394 | JMS I (MOVE | |
| 395 | TD8EFL, CDF 20 | |
| 396 | 7577 | |
| 397 | TD8EFG, 0 | |
| 398 | 7577 | |
| 399 | -174 /SPARE BATCH PARAMETERS IN TOP FIELD | |
| 400 | TAD MXFLD /SET FLAG IN CLEANUP ROUTINE | |
| 401 | DCA I (TDEXFG /TO RESTORE TD8E HANDLER TO FIELD 2 | |
| 402 | NOTDSY, CDF 10 | |
| 403 | TAD MXFLD | |
| 404 | TAD (-7 | |
| 405 | SNA /32K? | |
| 406 | JMP TAKCAR /YES - UNIQUE PROBLEMS | |
| 407 | TAD (6 | |
| 408 | SNA CLA /8K? | |
| 409 | JMP ONLY8K /YES - IGNORE BATCH & TD8E CRAP | |
| 410 | JMS I (GBFLG /GET BATCH FLAG | |
| 411 | TAD TD8EFG | |
| 412 | SNA CLA /IF NO BATCH OR TD8E'S, | |
| 413 | ONLY8K, TAD (200 /USE ALL OF THE LAST FIELD. | |
| 414 | STOHDF, TAD (-F0HEND-200 | |
| 415 | DCA HDIFF /OTHERWISE USE ONLY UP TO 7600 | |
| 416 | JMP I RTINIT | |
| 417 | \fTAKCAR, JMS I (GBFLG /GET BATCH FLAG | |
| 418 | SNA CLA | |
| 419 | JMP NO32KB /NO BATCH - USE UP TO 77400 (TD8E ROM) | |
| 420 | TAD (6 /BATCH - USE UP TO 67600 | |
| 421 | DCA MXFLD | |
| 422 | JMP STOHDF | |
| 423 | NO32KB, TAD TD8EFG | |
| 424 | SNA CLA /IF IN-CORE TD8E'S | |
| 425 | TAD (7600 /LIMIT IS 77600 ELSE 77400 | |
| 426 | JMP STOHDF | |
| 427 | PAGE | |
| 428 | \fGETHAN, 0 /GET HANDLER SUBROUTINE | |
| 429 | AND (17 | |
| 430 | DCA UNIT | |
| 431 | DCA H1 | |
| 432 | TAD UNIT | |
| 433 | JMS I (200 | |
| 434 | 12 /INQUIRE | |
| 435 | H1, 0 | |
| 436 | NOP /ERROR RETURN ALWAYS SKIPPED | |
| 437 | TAD H1 | |
| 438 | SNA | |
| 439 | JMP NOTLDD /NOT IN CORE - MUST LOAD | |
| 440 | JMS HCWTBA /IN CORE | |
| 441 | GHEXIT, TAD I HCWPTR /GET CONTROL WORD FOR HANDLER PAGE | |
| 442 | DCA HCWORD | |
| 443 | TAD HLDADR | |
| 444 | DCA HADR /ASSUME HANDLER PERMENANTLY RESIDENT | |
| 445 | TAD (-4 | |
| 446 | AND HCWORD | |
| 447 | SNA CLA /WERE WE RASH? | |
| 448 | JMP RESHAN /NO | |
| 449 | TAD HADR | |
| 450 | AND (177 | |
| 451 | TAD (HPLACE /YES - I APOLOGIZE | |
| 452 | DCA HADR | |
| 453 | RESHAN, TAD I GETHAN /GET DSRN NUMBER | |
| 454 | SNA | |
| 455 | JMP I GETHAN /NO DSRN NUMBER | |
| 456 | CLL RTL | |
| 457 | RAL | |
| 458 | TAD I GETHAN | |
| 459 | TAD (DSRN-12 | |
| 460 | DCA X0 /XR POINTS TO DSRN ENTRY | |
| 461 | CDF 0 | |
| 462 | TAD HADR | |
| 463 | DCA I X0 /SEE PG 0, FLD 0 FOR DSRN FORMAT | |
| 464 | TAD HCWORD | |
| 465 | TAD CFLAG /THE C BIT REVERSES THE FORMS CTL BIT ON THIS FILE | |
| 466 | AND (7773 /KILL ANY OVERFLOW | |
| 467 | DCA I X0 | |
| 468 | TAD HGHFLD | |
| 469 | CLL RTL | |
| 470 | RAL | |
| 471 | TAD HGHADR | |
| 472 | DCA I X0 /SAVE BUFFER ADDRESS, FIELD | |
| 473 | TAD HGHADR | |
| 474 | DCA I X0 /INITIALIZE WORD POINTER | |
| 475 | TAD HGHADR | |
| 476 | TAD (400 | |
| 477 | SNA | |
| 478 | ISZ HGHFLD /BUMP DOUBLEWORD BUFFER ADDRESS | |
| 479 | DCA HGHADR | |
| 480 | AC7775 | |
| 481 | DCA I X0 /INITIALIZE CHAR CTR | |
| 482 | CDF 10 | |
| 483 | JMP I GETHAN /RETURN | |
| 484 | \f/LOAD A NON-RESIDENT HANDLER | |
| 485 | ||
| 486 | NOTLDD, JMS GH | |
| 487 | CLA IAC | |
| 488 | JMS GH /TRY 1-PAGE AND THEN 2-PAGE ASSIGN | |
| 489 | HLT /ARRRGHHHH!!! | |
| 490 | ||
| 491 | GH, 0 | |
| 492 | DCA TPFLG | |
| 493 | TAD HTOP | |
| 494 | TAD (7600 /BUMP HANDLER CEILING DOWN | |
| 495 | SNA | |
| 496 | JMP I (HNDERR /CAN'T PUT HANDLER IN PAGE 0 | |
| 497 | DCA HTOP | |
| 498 | TAD TPFLG | |
| 499 | TAD HTOP | |
| 500 | DCA GHADR | |
| 501 | TAD UNIT | |
| 502 | JMS I (200 | |
| 503 | 1 /FETCH HANDLER | |
| 504 | GHADR, 0 | |
| 505 | JMP I GH /FAILED! | |
| 506 | TAD GHADR /SAVE ACTUAL LOAD ADDRESS | |
| 507 | JMS HCWTBA /INDEX INTO HCW TABLE | |
| 508 | TAD GHADR | |
| 509 | AND (7600 | |
| 510 | TAD HDIFF | |
| 511 | DCA GHADR /SAVE RELOCATED HANDLER PAGE ADDRESS | |
| 512 | TAD MXFLD /PUT ADDR IN BITS 0-3 AND FIELD IN BITS 6-8 | |
| 513 | CLL RTL | |
| 514 | RAL | |
| 515 | TAD GHADR | |
| 516 | DCA GHADR | |
| 517 | TAD UNIT | |
| 518 | JMS I (GETION /ION BIT INTO BIT 11, FORMS CTL BIT INTO BIT 10 | |
| 519 | TAD GHADR | |
| 520 | DCA I HCWPTR /STORE POINTER FOR THIS PAGE | |
| 521 | JMP GHEXIT | |
| 522 | \fHCWTBA, 0 | |
| 523 | DCA HLDADR | |
| 524 | TAD HLDADR | |
| 525 | AND (7600 | |
| 526 | CLL RTL | |
| 527 | RTL | |
| 528 | RTL /GET PAGE NUMBER | |
| 529 | TAD (HCWTBL-24 | |
| 530 | DCA HCWPTR /SAVE POINTER INTO TABLE | |
| 531 | JMP I HCWTBA | |
| 532 | ||
| 533 | HTOP, F0HEND | |
| 534 | HCWPTR, 0 | |
| 535 | TPFLG, 0 | |
| 536 | ||
| 537 | SPSTRT, RELOC 200 / /P STARTUP CODE | |
| 538 | SWAB /MAKE SURE EAE IS IN MODE B | |
| 539 | JMP I .+1 /EXECUTES AT 200 | |
| 540 | FPSTRT /START UP IN FLAG CLEARING CODE | |
| 541 | RELOC | |
| 542 | PAGE | |
| 543 | \f/ROUTINE TO ACCEPT FILE SPECIFICATIONS | |
| 544 | ||
| 545 | GETFIL, 0 | |
| 546 | CDF 10 | |
| 547 | TAD I (OS8SWS-1 | |
| 548 | SPA CLA /ALTMODE MEANS NO MORE SPECS | |
| 549 | JMP I GETFIL | |
| 550 | GETFCD, JMS I (SPMDCD /CALL CD IN SPECIAL MODE | |
| 551 | TAD I (7600 | |
| 552 | STL CIA | |
| 553 | SNA /OUTPUT FILE? | |
| 554 | TAD I (7605 | |
| 555 | SNA /IN OR OUT FILE? | |
| 556 | TAD I (OS8SWS+3 /NEITHER - HOW ABOUT INTERNAL HANDLER? | |
| 557 | SNA CLA | |
| 558 | JMP GETFIL+1 /NONE OF THE ABOVE | |
| 559 | RAR /LINK MAGICALLY TELLS DIRECTION | |
| 560 | DCA DIR | |
| 561 | DCA DSRNUM | |
| 562 | TAD I (OS8SWS+2 | |
| 563 | AND (777 /SWITCHES 1-9 | |
| 564 | SNA | |
| 565 | JMP NONUM | |
| 566 | CLL RTL | |
| 567 | DNUMLP, ISZ DSRNUM | |
| 568 | RAL | |
| 569 | SMA | |
| 570 | JMP DNUMLP /TRANSLATE SWITCH INTO NUMBER | |
| 571 | TAD DIR /** AC IS NEGATIVE ** | |
| 572 | SPA CLA | |
| 573 | TAD (5 | |
| 574 | TAD (7600 | |
| 575 | DCA FPTR /POINT TO FILE UNIT | |
| 576 | TAD I FPTR | |
| 577 | SNA | |
| 578 | JMP INTHND /NO FILE - GET HANDLER FROM INTERNAL LIST | |
| 579 | JMS I (GETHAN /GET HANDLER - XR10 POINTS INTO DSRN | |
| 580 | DSRNUM, 0 /DSRN ENTRY NUMBER | |
| 581 | TAD DIR | |
| 582 | STL RTL /GENERATE 2 OR 3 (LOOKUP OR ENTER) | |
| 583 | DCA LKPNTR | |
| 584 | TAD I FPTR /GET UNIT AND REQUESTED BLOCK COUNT (IF ENTER) | |
| 585 | ISZ FPTR /BUMP POINTER SO IT POINTS TO THE FILE NAME | |
| 586 | DCA FUNIT /SAVE UNIT NUMBER A SEC | |
| 587 | TAD I FPTR /WATCH OUT FOR NULL FILE NAMES | |
| 588 | SNA CLA /AS THEY WILL FAIL ON LOOKUPS | |
| 589 | JMP NONAME /ON OUTPUT-ONLY NON-DIRECTORY DEVICES | |
| 590 | JMS I (SVHND /SAVE HANDLER | |
| 591 | TAD FUNIT | |
| 592 | JMS I (200 | |
| 593 | LKPNTR, 0 /LOOKUP OR ENTER | |
| 594 | FPTR, 0 /FILE NAME | |
| 595 | FUNIT, 0 /GETS LENGTH | |
| 596 | JMP FILERR /SOMETHING NOT KOSHER | |
| 597 | JMS I (RSTHND /RESTORE VIRGIN COPY OF HANDLER | |
| 598 | \fSTDSRN, TAD FPTR | |
| 599 | CDF 0 | |
| 600 | DCA I X0 /SAVE STARTING BLOCK | |
| 601 | DCA I X0 /RELATIVE BLOCK | |
| 602 | TAD FUNIT | |
| 603 | SNA | |
| 604 | IAC /FUDGE NON-DIRECTORY DEVICES VERY LARGE | |
| 605 | CIA /TURN NEGATIVE COUNT TO POSITIVE | |
| 606 | DCA I X0 /LENGTH | |
| 607 | TAD X0 | |
| 608 | DCA FPTR /SAVE PTR TO LENGTH WORD | |
| 609 | CDF 10 | |
| 610 | TAD DIR | |
| 611 | SMA CLA /TENTATIVE FILE? | |
| 612 | JMP GETFIL+1 | |
| 613 | TAD FPTR /YES - STORE POINTER TO LENGTH WORD OF DSRN | |
| 614 | DCA I TFPTR /IN TENTATIVE FILE TABLE ENTRY | |
| 615 | JMS I (MOVE | |
| 616 | CDF 10 | |
| 617 | 7600-1 | |
| 618 | CDF 10 | |
| 619 | TFPTR, TFTABL /SAVE FILE NAME AND UNIT IN | |
| 620 | -5 /TENTATIVE FILE TABLE | |
| 621 | TAD TFPTR | |
| 622 | TAD (6 | |
| 623 | DCA TFPTR /BUMP PTR TO NEXT 6-WORD ENTRY | |
| 624 | JMP GETFIL+1 | |
| 625 | \fNONUM, JMS I (RLERR | |
| 626 | NONMSG | |
| 627 | JMP GETFCD | |
| 628 | FILERR, JMS I (RLERR | |
| 629 | FILMSG | |
| 630 | JMP GETFCD | |
| 631 | ||
| 632 | DIR, 0 | |
| 633 | ||
| 634 | NONAME, DCA FPTR | |
| 635 | DCA FUNIT /ZERO BLOCK # AND LENGTH | |
| 636 | JMP STDSRN /USE ENTIRE DEVICE AS FILE | |
| 637 | ||
| 638 | INTHND, STA | |
| 639 | TAD I (OS8SWS+3 | |
| 640 | AND (3 /ONLY USE LOW ORDER 2 BITS OF NUMBER | |
| 641 | TAD (IHTBL | |
| 642 | DCA HADR /SAVE PTR INTO TABLE OF INTL HANDLERS | |
| 643 | TAD DSRNUM | |
| 644 | CLL RTL | |
| 645 | RAL | |
| 646 | TAD DSRNUM /MULTIPLY DSRN NUMBER BY 9 | |
| 647 | TAD (DSRN-11 /ADD TABLE BASE | |
| 648 | DCA DSRNUM | |
| 649 | TAD I HADR | |
| 650 | CDF 0 | |
| 651 | DCA I DSRNUM | |
| 652 | ISZ DSRNUM | |
| 653 | AC7776 | |
| 654 | TAD CFLAG /DEPENDING ON THE C FLAG, | |
| 655 | CIA | |
| 656 | DCA I DSRNUM /DISABLE OR ENABLE FORMS CONTROL | |
| 657 | JMP GETFIL+1 | |
| 658 | PAGE | |
| 659 | \fTSTSWS, 0 /ROUTINE TO TEST CD SWITCHES E AND H | |
| 660 | TAD I (OS8SWS | |
| 661 | AND (20 | |
| 662 | CDF 0 | |
| 663 | SNA CLA /TEST FOR /H SWITCH | |
| 664 | JMP .+3 | |
| 665 | TAD (HLT | |
| 666 | DCA I (HLTNOP /SET TO HALT BEFORE STARTING PROGRAM | |
| 667 | CDF 10 | |
| 668 | TAD I (OS8SWS+1 | |
| 669 | AND (4 | |
| 670 | SNA CLA /TEST FOR /V SWITCH | |
| 671 | JMP .+3 /NO | |
| 672 | JMS I (RLERR /YES - PRINT VERSION NUMBER MESSAGE | |
| 673 | XVERMS | |
| 674 | TAD I (OS8SWS | |
| 675 | AND (200 | |
| 676 | CDF 0 | |
| 677 | SZA CLA /TEST FOR /E SWITCH | |
| 678 | ISZ I (ERRFLG /MAKE USER ERRORS NON-FATAL | |
| 679 | CDF 10 /(USER ERROR = MISSING SUBROUTINE, ETC) | |
| 680 | TAD I (OS8SWS+1 | |
| 681 | AND (400 | |
| 682 | CDF 0 | |
| 683 | SNA CLA /TEST FOR /P SWITCH | |
| 684 | JMP .+3 /NO, PRAISE BE! | |
| 685 | TAD (SKP /GIVE THE DUMMY WHAT HE WANTS | |
| 686 | DCA I (HLTNOP | |
| 687 | CDF 10 | |
| 688 | TAD I (OS8SWS | |
| 689 | RTL | |
| 690 | SMA CLA | |
| 691 | AC0002 | |
| 692 | DCA CFLAG /SAVE C FLAG IN PAGE0 | |
| 693 | JMP I TSTSWS | |
| 694 | ||
| 695 | MOVEAE, 0 | |
| 696 | TAD (EFFNOR /SUBSTITUTE A POINTER TO THE EAE NORMALIZE | |
| 697 | CDF 0 /ROUTINE FOR THE POINTER TO THE NON-EAE | |
| 698 | DCA I (NORMX /NORMALIZE ROUTINE | |
| 699 | JMS I (MOVE | |
| 700 | CDF 10 | |
| 701 | FPPKG-1 /THE EAE PKG IS IN THE SAME PAGE IN FIELD 1 | |
| 702 | CDF 0 | |
| 703 | FPPKG-1 /AS THE NON-EAE PKG IN FIELD 0 | |
| 704 | -600 | |
| 705 | JMS I (MOVE | |
| 706 | CDF 0 /SUBSTITUTE FAST FIX AND FLOAT | |
| 707 | EFXFLT-1 | |
| 708 | CDF 0 | |
| 709 | EAEFIX-1 | |
| 710 | -FXFLTC | |
| 711 | JMP I MOVEAE | |
| 712 | \fSPMDCD, 0 /SUBR TO DO A SPECIAL MODE COMMAND DECODE | |
| 713 | JMS I (MOVE | |
| 714 | CDF 10 | |
| 715 | OS8DVT-1 | |
| 716 | CDF 10 | |
| 717 | DVTEMP-1 /MOVE OS/8 DEVICE HANDLER TABLE | |
| 718 | -17 /SINCE C.D. CLEARS IT AND WE ARE USING IT | |
| 719 | TAD I (HTOP /GET LOWEST HANDLER LOADED | |
| 720 | RAL | |
| 721 | SZL SPA CLA /DID WE LOAD ANY BELOW 02000? | |
| 722 | JMP .+4 /NO | |
| 723 | CDF 0 | |
| 724 | ISZ I (OSJSWD /YES - MAKE CD CALLS DESTRUCTIVE | |
| 725 | ISZ I (OSJSWD | |
| 726 | CDF 10 | |
| 727 | JMS I (200 | |
| 728 | 5 /COMMAND DECODE | |
| 729 | 5200 /SPECIAL MODE - WROUGHT WITH PERIL | |
| 730 | 0 /DON'T CLEAR TENTATIVE FILES | |
| 731 | JMS I (MOVE | |
| 732 | CDF 10 | |
| 733 | DVTEMP-1 | |
| 734 | CDF 10 | |
| 735 | OS8DVT-1 | |
| 736 | -17 /MOVE DEVICE HANDLER TABLE BACK | |
| 737 | JMS TSTSWS /CHECK FOR /E, /H, /P | |
| 738 | JMP I SPMDCD | |
| 739 | ||
| 740 | IHTBL, PTR;PTP;LPT;TTY /INTERNAL HANDLER TABLE | |
| 741 | PAGE | |
| 742 | \fGETION, 0 | |
| 743 | TAD (OS8DCB-1 | |
| 744 | DCA GMADR | |
| 745 | TAD I GMADR /GET DCB WORD | |
| 746 | CLL RTR | |
| 747 | RAR | |
| 748 | AND (77 /INDEX INTO TABLE | |
| 749 | TAD (IONTBL /WHICH INDICATES IF HANDLER CAN EXECUTE | |
| 750 | DCA GMADR /WITH INTERRUPTS ON | |
| 751 | TAD I GMADR /ION BIT INTO BIT 11, FORMS CONTROL INTO BIT 10 | |
| 752 | JMP I GETION | |
| 753 | ||
| 754 | GBFLG, 0 | |
| 755 | CDF 0 | |
| 756 | TAD I (7777 /SPECIAL FLAGS LOC | |
| 757 | CDF 10 | |
| 758 | RTL | |
| 759 | CLA RAL | |
| 760 | JMP I GBFLG | |
| 761 | ||
| 762 | SVHND, 0 /ROUTINE TO SAVE HANDLER IN F1 | |
| 763 | JMS GMADR /GET MOVE FROM ADDRESS | |
| 764 | JMP I SVHND /NO HANDLER TO MOVE | |
| 765 | DCA SVMOVE | |
| 766 | JMS I (MOVE | |
| 767 | CDF 0 | |
| 768 | SVMOVE, 0 | |
| 769 | CDF 10 | |
| 770 | F0HSAV-1 | |
| 771 | -400 | |
| 772 | JMP I SVHND | |
| 773 | ||
| 774 | RSTHND, 0 /ROUTINE TO RESTORE HANDLER FROM F1 | |
| 775 | JMS GMADR | |
| 776 | JMP I RSTHND /HANDLER IS SYS: | |
| 777 | DCA RSTMOV | |
| 778 | JMS I (MOVE | |
| 779 | CDF 10 | |
| 780 | F0HSAV-1 | |
| 781 | CDF 0 | |
| 782 | RSTMOV, 0 | |
| 783 | -400 | |
| 784 | JMP I RSTHND | |
| 785 | ||
| 786 | GMADR, 0 | |
| 787 | TAD HLDADR | |
| 788 | SPA /CHECK THAT WE'RE NOT TRYING | |
| 789 | JMP RESHND /TO SAVE A RESIDENT HANDLER - | |
| 790 | AND RESHND /THAT COULD BE TRICKY | |
| 791 | TAD (-1 /ECCH | |
| 792 | ISZ GMADR | |
| 793 | JMP I GMADR | |
| 794 | RESHND, 7600 | |
| 795 | JMP I GMADR | |
| 796 | \f/RTS LOADER ERROR MESSAGE ROUTINE & MESSAGES | |
| 797 | ||
| 798 | RLERR, 0 /ERROR MESSAGES ARE IN FIELD 0 | |
| 799 | CLA | |
| 800 | CDF 10 | |
| 801 | TAD I RLERR | |
| 802 | CDF 0 | |
| 803 | DCA RLTMP | |
| 804 | RELP, TAD I RLTMP | |
| 805 | RTR | |
| 806 | RTR | |
| 807 | RTR | |
| 808 | AND (77 | |
| 809 | JMS LTTY | |
| 810 | TAD I RLTMP | |
| 811 | AND (77 | |
| 812 | JMS LTTY | |
| 813 | ISZ RLTMP | |
| 814 | JMP RELP | |
| 815 | EOMSG, TAD (7515 | |
| 816 | JMS LTTY | |
| 817 | TAD (7512 | |
| 818 | JMS LTTY | |
| 819 | ISZ RLERR | |
| 820 | CDF 10 | |
| 821 | JMP I RLERR /SOME MESSAGES ARE NOT FATAL | |
| 822 | ||
| 823 | LTTY, 0 | |
| 824 | SNA | |
| 825 | JMP EOMSG | |
| 826 | TAD (240 | |
| 827 | SMA | |
| 828 | AND (77 /CONVERT SIXBIT TO EIGHTBIT | |
| 829 | TAD (240 | |
| 830 | TLS | |
| 831 | CLA | |
| 832 | TSF | |
| 833 | JMP .-1 | |
| 834 | JMP I LTTY | |
| 835 | \f/ROUTINE TO DETERMINE WHETHER WE ARE RUNNING IN THE | |
| 836 | /BACKGROUND UNDER RTS-8, AND MODIFY THE RUN-TIME SYSTEM IF WE ARE. | |
| 837 | /RUNS AT INITIALIZATION TIME, BEFORE LOWER FIELD 0 IS MOVED | |
| 838 | ||
| 839 | BAKTST, 0 | |
| 840 | FPICL /FIRST INITIALIZE FPP (IF ANY) | |
| 841 | FPCOM /INCLUDING CLEARING EXTENDED APT POINTER | |
| 842 | TCF /TEST FOR RTS-8 BACKGROUND BY CLEARING THE | |
| 843 | TSF /TTY FLAG AND THEN TESTING IT - IF IT IS | |
| 844 | JMP I BAKTST /STILL SET, WE ARE RUNNING UNDER SRT-8. | |
| 845 | CDF 0 /MODIFY LIST AND MODIFICATIONS ARE IN FIELD 0 | |
| 846 | BAKLP, TAD I BKRPTR /GET POINTER TO BLOCK TO BE MODIFIED | |
| 847 | SNA | |
| 848 | JMP BAKRTN /ZERO - WE'RE DONE | |
| 849 | DCA X0 /STORE IN AUTO-XR | |
| 850 | ISZ BKRPTR | |
| 851 | BAKWLP, TAD I BKRPTR /GET NEXT WORD TO STORE | |
| 852 | ISZ BKRPTR | |
| 853 | SNA | |
| 854 | JMP BAKLP /ZERO MEANS END OF GROUP | |
| 855 | DCA I X0 | |
| 856 | JMP BAKWLP | |
| 857 | BAKRTN, CDF 10 /RESET DATA FIELD TO 10 | |
| 858 | DCA I (EAEKIL /EAE USES SGT WHICH IS NOT EMULATED, SO KILL IT | |
| 859 | JMP I BAKTST /AND RETURN | |
| 860 | ||
| 861 | BKRPTR, BKRLST | |
| 862 | PAGE | |
| 863 | ||
| 864 | F0TO= . | |
| 865 | \f/FLOATING POINT PROCESSOR HANDLER | |
| 866 | *FPPINT | |
| 867 | ||
| 868 | RETURN, JMP FPPRTN /MUST BE AT 0 IN PAGE | |
| 869 | ||
| 870 | FPGO, 0 /FPP STARTUP ROUTINE - MUST BE AT 1 IN PAGE | |
| 871 | CDF 0 | |
| 872 | DCA STEFLG | |
| 873 | TAD PC | |
| 874 | DCA FSAVPC /SAVE OLD PC FOR ONE LEVEL | |
| 875 | TAD APT | |
| 876 | DCA SAVAPT /OF RE-ENTRANTNESS | |
| 877 | TAD I FPGO | |
| 878 | DCA PC | |
| 879 | TAD APT | |
| 880 | AND (7770 | |
| 881 | DCA APT /SET UP ADDRESS IN APT | |
| 882 | FPREST, TAD (400 /ENABLE FPP INTERRUPTS | |
| 883 | FPCOM /LOAD AND STORE ENTIRE APT | |
| 884 | CLA /NECESSARY? | |
| 885 | TAD STEFLG /0 OR 4000?(STARTF OR STARTE) | |
| 886 | SZA | |
| 887 | 6567 /A MNEMONIC? | |
| 888 | CLA | |
| 889 | TAD (APT | |
| 890 | IOF | |
| 891 | FPST /START UP FPP | |
| 892 | JMP .-1 /I HAVE NO IDEA WHY IT DIDN'T START | |
| 893 | CLA /NECESSARY? | |
| 894 | JMS I (HANG /EXECUTE BACKGROUND | |
| 895 | FPUHNG | |
| 896 | FPRST /READ FPP STATUS | |
| 897 | FPICL /RESET FPP | |
| 898 | ION | |
| 899 | RTL | |
| 900 | SZL /TEST TRAP BIT | |
| 901 | JMP TRAP /YUP - GO EXECUTE IT | |
| 902 | AND (7400 | |
| 903 | SZA /ANY ERRORS? | |
| 904 | JMP FPPER | |
| 905 | TAD FSAVPC | |
| 906 | DCA PC /RESTORE OLD PC | |
| 907 | TAD SAVAPT | |
| 908 | DCA APT | |
| 909 | ISZ FPGO | |
| 910 | JMP I FPGO | |
| 911 | \f/FLOATING POINT TRAP PROCESSOR | |
| 912 | ||
| 913 | TRAP, AC7775 | |
| 914 | TAD PC | |
| 915 | DCA PC /BACK UP PC TO BEFORE THE TRAP | |
| 916 | SZL | |
| 917 | STA | |
| 918 | TAD APT /INCLUDING THE FIELD BITS | |
| 919 | DCA APT | |
| 920 | TAD APT /SET UP "FETPC" TO FETCH POSSIBLE TRAP ARGS | |
| 921 | JMS I MCDF | |
| 922 | DCA I (PCCDF | |
| 923 | JMS I (FETPC | |
| 924 | DCA T | |
| 925 | TAD T /GET TRAP WORD | |
| 926 | JMS I MCDF | |
| 927 | IAC /MAKE A "CDF CIF N" | |
| 928 | IAC | |
| 929 | DCA TRPCIF | |
| 930 | JMS I (FETPC | |
| 931 | DCA ADR /STORE PDP8-CODE ROUTINE ADDRESS | |
| 932 | TAD T | |
| 933 | TRPCIF, HLT /SET DATA AND INSTRUCTION FIELDS | |
| 934 | SMA CLA /TRAP3 OR TRAP4? | |
| 935 | JMP I ADR /TRAP3 - GO TO ADR | |
| 936 | JMS I ADR /TRAP4 - CALL ADR | |
| 937 | FPPRTN, DCA STEFLG | |
| 938 | ISZ PC /RESTORE PC FROM BEFORE TRAP | |
| 939 | SKP | |
| 940 | ISZ APT /INCLUDING FIELD | |
| 941 | CDF 0 | |
| 942 | JMP FPREST /RESTART FPP | |
| 943 | ||
| 944 | FPPER, SPA | |
| 945 | JMP I (FPPERR /FPHALT - FATAL ERROR | |
| 946 | RTL | |
| 947 | ISZ FATAL /DIVIDE BY 0 AND OVERFLOW ARE NON-FATAL | |
| 948 | SZL | |
| 949 | JMP FPDVER | |
| 950 | FPOVER, JMS I ERR | |
| 951 | SKP | |
| 952 | FPDVER, JMS I ERR | |
| 953 | TAD . /I ALWAYS WANTED TO INCLUDE ONE OF THESE! | |
| 954 | DCA ACX | |
| 955 | AC2000 | |
| 956 | DCA ACH | |
| 957 | JMP FPREST | |
| 958 | ||
| 959 | FSAVPC, 0 | |
| 960 | SAVAPT, 0 | |
| 961 | STEFLG, 0 | |
| 962 | \f/RANDOM FPP CODE FOR D.P. I/O | |
| 963 | DFSTM2, FSTA+LONG | |
| 964 | DFTMP2 | |
| 965 | FEXIT | |
| 966 | ||
| 967 | PAGE | |
| 968 | \f/THIS IS DOUBLE PRECISION FORMATTED OUTPUT. | |
| 969 | /ITS A LOT LIKE SINGLE PRECISION,WITHOUT ALL THE G + I STUFF | |
| 970 | /AND, OH JOY!, NO PAGE 0 LITERALS. | |
| 971 | DNXT, TAD RWFLAG /READ OR WRITE? | |
| 972 | SMA CLA | |
| 973 | AC4000 /ITS INPUT SO LEAVE IN STARTE MODE | |
| 974 | JMS I (GETLMN | |
| 975 | JMP .+3 | |
| 976 | DFMT, STA | |
| 977 | BFMT, DCA EFLG | |
| 978 | TAD D | |
| 979 | DCA OD /SAVE COUNT OF DIGITS AFTER DEC PT | |
| 980 | TAD PFACT | |
| 981 | DCA PFACTX | |
| 982 | DCA SCALE | |
| 983 | JMS I (SKPOUT /DONE? | |
| 984 | JMP I (DPIN /ITS INPUT | |
| 985 | STA /ITS OUTPUT | |
| 986 | DCA I (FFNEG /USE THIS LOCN AS SIGN FLAG | |
| 987 | TAD EFLG | |
| 988 | CLL RAL | |
| 989 | CLL RAL | |
| 990 | TAD W /GIVE ROOM FOR EXP FIELD (IF ANY) | |
| 991 | CLL /NECESSARY? | |
| 992 | DCA I (OW | |
| 993 | TAD ACH | |
| 994 | SNA | |
| 995 | JMP SKPZRO /IF AC 0,SKIP ALOT OF THIS | |
| 996 | SMA CLA | |
| 997 | JMP DSCLUP | |
| 998 | JMS I (DFNEG /AC<0-NEGATE IT | |
| 999 | DCA I (FFNEG / 0 <> 7777 | |
| 1000 | DSCLUP, DCA SCALE | |
| 1001 | TAD ACX | |
| 1002 | SMA SZA CLA /AC<1.0? | |
| 1003 | JMP DGT1 /NO | |
| 1004 | AC4000 /STARTE | |
| 1005 | JMS I (FPGO /Y-MULT BY 10. | |
| 1006 | FMUL10 | |
| 1007 | STA | |
| 1008 | TAD SCALE /BUMP POWER OF TEN | |
| 1009 | JMP DSCLUP | |
| 1010 | DGT1, JMS I (DSCLDN /NUMBER IS >=1.;NOW DECREASE IT TO (0,1) | |
| 1011 | AC4000 | |
| 1012 | JMS I (FPGO /SAVE IT | |
| 1013 | FSTTMP | |
| 1014 | TAD (22 | |
| 1015 | JMS I (OSCALE | |
| 1016 | AC4000 | |
| 1017 | JMS I (FPGO | |
| 1018 | FADTMP | |
| 1019 | JMS I (DSCLDN | |
| 1020 | \fSKPZRO, JMS I (DIGCNT /NO NEED FOR ALL THE G STUFF TO BE | |
| 1021 | /INCLUDED IN THE SINGLE PREC ROUTINE | |
| 1022 | /MAKE NOTG ROUTINE A SUBROUTINE | |
| 1023 | SMA /EQUIV TO OUTNUM IN SINGLE PREC | |
| 1024 | JMP DASTRS | |
| 1025 | JMS I (OBLNKS | |
| 1026 | AC7775 | |
| 1027 | ISZ I (FFNEG /IF SIGN IS NEG, | |
| 1028 | JMS I (DIGIT /PRINT A MINUS | |
| 1029 | CLA | |
| 1030 | TAD ACX | |
| 1031 | SNA /ALIGN FAC MANTISSA INTO A | |
| 1032 | JMS I (DAL1 /FRACTION (.1,1) | |
| 1033 | IAC | |
| 1034 | SPA | |
| 1035 | JMS I (DACSR | |
| 1036 | CLA | |
| 1037 | TAD EAC3 | |
| 1038 | DCA AC1 /MOVE FAC DOWN SO OVERFLOW FROM | |
| 1039 | TAD EAC2 /MULT BY 10 IN HIGH ORDER WORD | |
| 1040 | DCA EAC3 | |
| 1041 | TAD EAC1 | |
| 1042 | DCA EAC2 | |
| 1043 | TAD ACL | |
| 1044 | DCA EAC1 | |
| 1045 | TAD ACH | |
| 1046 | DCA ACL | |
| 1047 | TAD SCALE | |
| 1048 | SPA SNA /ANY DIGITS TO LEFT OF DEC PT? | |
| 1049 | JMP I (DPRZRO /N-PRINT A 0 | |
| 1050 | /JUST AS CHEAP TO DUPLICATE CODE | |
| 1051 | JMS I (DBLDIG /Y- PRINT THEM | |
| 1052 | \fDRDCPT, AC7776 | |
| 1053 | JMS I (DIGIT /PRINT A DEC PT | |
| 1054 | TAD SCALE | |
| 1055 | SMA CLA /NEED LEADING ZEROS? | |
| 1056 | JMP DNOLZR /NO | |
| 1057 | TAD SCALE | |
| 1058 | DCA T | |
| 1059 | DLZERO, STA CLL | |
| 1060 | TAD OD /DECREASE D VALUE | |
| 1061 | SNL | |
| 1062 | JMP DNOMAC /NO MORE FIELD WIDTH AVAILABLE | |
| 1063 | DCA OD | |
| 1064 | JMS I (DIGIT /PRINT A 0 | |
| 1065 | ISZ T /CONT UNTIL COUNT OR WIDTH RUNS OUT | |
| 1066 | JMP DLZERO | |
| 1067 | DNOLZR, TAD OD | |
| 1068 | SZA | |
| 1069 | JMS I (DBLDIG /PRINT REMAINING DIGITS | |
| 1070 | DNOMAC, CLA | |
| 1071 | TAD EFLG | |
| 1072 | SZA /IF EFLG IS NOT ZERO IT IS -1, | |
| 1073 | JMS I (EXPFLD /SO WE WILL PRINT A D INSTEAD OF AN E | |
| 1074 | JMP I (DNXT | |
| 1075 | ||
| 1076 | DASTRS, CLA | |
| 1077 | TAD W | |
| 1078 | JMS I (ASTRSK | |
| 1079 | JMP I (DNXT | |
| 1080 | PAGE | |
| 1081 | \fDBLDIG, 0 /OUTPUT DIGITS | |
| 1082 | CIA | |
| 1083 | DCA T | |
| 1084 | DBDLOP, DCA ACH /0 THE HI WORD FOR OVERFLO | |
| 1085 | TAD AC1 | |
| 1086 | DCA AC2 /START TO COPY THE FAC.THIS IS | |
| 1087 | TAD ACL /EAC3 SHIFTED DOWN 1 WORD | |
| 1088 | DCA OPL | |
| 1089 | TAD EAC1 | |
| 1090 | DCA L1 /ACL | |
| 1091 | TAD EAC2 | |
| 1092 | DCA DACSR /EAC1 | |
| 1093 | TAD EAC3 | |
| 1094 | DCA DSCLDN /EAC2 | |
| 1095 | JMS DAL1 | |
| 1096 | JMS DAL1 | |
| 1097 | CLL | |
| 1098 | TAD AC2 | |
| 1099 | TAD AC1 | |
| 1100 | DCA AC1 /THIS IS FAC*5 COMING UP | |
| 1101 | RAL | |
| 1102 | TAD DSCLDN | |
| 1103 | TAD EAC3 | |
| 1104 | DCA EAC3 | |
| 1105 | RAL | |
| 1106 | TAD DACSR | |
| 1107 | TAD EAC2 | |
| 1108 | DCA EAC2 | |
| 1109 | RAL | |
| 1110 | TAD L1 | |
| 1111 | TAD EAC1 | |
| 1112 | DCA EAC1 | |
| 1113 | RAL | |
| 1114 | TAD OPL | |
| 1115 | TAD ACL | |
| 1116 | DCA ACL | |
| 1117 | RAL | |
| 1118 | TAD ACH | |
| 1119 | DCA ACH | |
| 1120 | JMS DAL1 | |
| 1121 | TAD ACH | |
| 1122 | JMS I (DIGIT | |
| 1123 | ISZ T | |
| 1124 | JMP DBDLOP | |
| 1125 | JMP I DBLDIG | |
| 1126 | \fDSCLDN, 0 /USED AS A TEMP TOO | |
| 1127 | TAD ACX | |
| 1128 | SPA SNA CLA | |
| 1129 | JMP I DSCLDN /DONE IF FAC<1. | |
| 1130 | AC4000 | |
| 1131 | JMS I (FPGO | |
| 1132 | FDIV10 | |
| 1133 | ISZ SCALE | |
| 1134 | 0 /A FREE LOCN! | |
| 1135 | JMP DSCLDN+1 | |
| 1136 | ||
| 1137 | DPRZRO, CLA | |
| 1138 | JMS I (DIGIT | |
| 1139 | JMP I (DRDCPT | |
| 1140 | /6 WORD FAC LEFT SHIFT | |
| 1141 | DAL1, 0 | |
| 1142 | TAD AC1 /GET OVERFLO BIT | |
| 1143 | CLL RAL /SHIFT LEFT | |
| 1144 | DCA AC1 | |
| 1145 | TAD EAC3 /CONTINUE WORKING WAY UP THRU MANTISSA | |
| 1146 | RAL | |
| 1147 | DCA EAC3 | |
| 1148 | TAD EAC2 | |
| 1149 | RAL | |
| 1150 | DCA EAC2 | |
| 1151 | TAD EAC1 | |
| 1152 | RAL | |
| 1153 | DCA EAC1 | |
| 1154 | TAD ACL | |
| 1155 | RAL | |
| 1156 | DCA ACL | |
| 1157 | TAD ACH | |
| 1158 | RAL | |
| 1159 | DCA ACH | |
| 1160 | JMP I DAL1 | |
| 1161 | ||
| 1162 | DFLTM2, FLDA+LONG | |
| 1163 | DFTMP2 | |
| 1164 | FEXIT | |
| 1165 | DFTMP2, 0;0;0;0;0;0 | |
| 1166 | \f/6 WORD FAC RIGHT SHIFT. ENTER WITH COUNT-1 IN AC | |
| 1167 | / | |
| 1168 | DACSR, 0 /USED AS A TEMP BY DBDLOP | |
| 1169 | DCA AC0 /STORE COUNT | |
| 1170 | DLOP1, TAD ACH | |
| 1171 | CLL | |
| 1172 | SPA /PROPOGATE SIGN | |
| 1173 | CML | |
| 1174 | RAR | |
| 1175 | DCA ACH /SHIFT RIGHT 1,PROPOGATE SIGN | |
| 1176 | TAD ACL /DO SHIFTING FOR EACH WORD OF MANTISSA | |
| 1177 | RAR | |
| 1178 | DCA ACL | |
| 1179 | TAD EAC1 | |
| 1180 | RAR | |
| 1181 | DCA EAC1 | |
| 1182 | TAD EAC2 | |
| 1183 | RAR | |
| 1184 | DCA EAC2 | |
| 1185 | TAD EAC3 | |
| 1186 | RAR | |
| 1187 | DCA EAC3 | |
| 1188 | ISZ ACX /INCREMENT EXPONENT | |
| 1189 | NOP | |
| 1190 | ISZ AC0 /DONE? | |
| 1191 | JMP DLOP1 /NOPE | |
| 1192 | RAR /YUP | |
| 1193 | DCA AC1 /SAVE 1 BIT OF OVERFLOW | |
| 1194 | JMP I DACSR | |
| 1195 | L1, 0 | |
| 1196 | PAGE | |
| 1197 | \f/THIS IS DOUBLE PRECISION INPUT (WITH FPP ONLY) | |
| 1198 | /IT IS A LOT LIKE SINGLE PRECISION INPUT, BUT USES | |
| 1199 | /ITS OWN FPP ROUTINES. | |
| 1200 | DPIN, STA | |
| 1201 | DCA DDPSW /INITIALIZE DEC. PT. SWITCH | |
| 1202 | STA | |
| 1203 | DCA DINESW /AND EXPONENT SWITCH | |
| 1204 | TAD W | |
| 1205 | CMA | |
| 1206 | DCA FMTNUM /CHAR COUNT | |
| 1207 | DINESM, DCA ACX /CLEAR FLOATING AC | |
| 1208 | DCA ACH | |
| 1209 | DCA ACL | |
| 1210 | DCA EAC1 | |
| 1211 | DCA EAC2 | |
| 1212 | DCA EAC3 | |
| 1213 | STA | |
| 1214 | DINMIN, DCA DFNEG | |
| 1215 | DINLOP, ISZ FMTNUM | |
| 1216 | JMP DINGCH /LOOP UNTIL WIDTH EXHAUSTED | |
| 1217 | DINENM, ISZ I (DFNEG /IS SIGN NEGATIVE? | |
| 1218 | JMS I (DFNEG /YES-NEGATE | |
| 1219 | ISZ DINESW /SEEN A D YET? | |
| 1220 | JMP DFIXUP /YES-THIS IS EXP,NOT NUMBER | |
| 1221 | TAD PFACTX /NO D- SCALE WITH P FACTOR | |
| 1222 | DSCLIN, TAD OD /GET SCALING FACTOR | |
| 1223 | STL | |
| 1224 | SNA | |
| 1225 | JMP I (DNXT /NO SCALING NEEDED | |
| 1226 | SMA | |
| 1227 | CIA CLL /AC CONTAINS MAGNITUDE,LINK CONTAINS SIGN | |
| 1228 | DCA OD | |
| 1229 | RTL | |
| 1230 | RAL | |
| 1231 | TAD (FDIV10 | |
| 1232 | DCA DIGFOP | |
| 1233 | AC4000 | |
| 1234 | JMS I (FPGO /MULT OR DIVIDE BY 10 | |
| 1235 | DIGFOP, 0 | |
| 1236 | ISZ OD | |
| 1237 | JMP DIGFOP-2 /MULT OR DIV CORRECT NUMBER OF TIMES | |
| 1238 | JMP I (DNXT /GET MORE | |
| 1239 | DIND, ISZ DINESW /IS THERE A 2ND D? | |
| 1240 | JMP DINER /Y-A NO-NO | |
| 1241 | ISZ DDPSW /FORCE DEC. PT. SWITCH ON | |
| 1242 | TAD OD /USE SCALE FACTOR IF SEEN DEC. PT | |
| 1243 | DCA SCALE /SAVE SCALE FACTOR | |
| 1244 | ISZ DFNEG | |
| 1245 | JMS DFNEG /GET SIGN OF NUMBER | |
| 1246 | AC4000 | |
| 1247 | JMS I (FPGO /SAVE IT TEMPORARILY | |
| 1248 | DFSTM2 | |
| 1249 | JMP DINESM /GO COLLECT EXP | |
| 1250 | \fDFIXUP, JMS I (FFIX /IS THIS OK FOR DBL PREC??? | |
| 1251 | TAD ACI | |
| 1252 | CIA | |
| 1253 | TAD SCALE /ADD EXP TO DEC PT SCALE FACTOR | |
| 1254 | DCA OD | |
| 1255 | AC4000 | |
| 1256 | JMS I (FPGO | |
| 1257 | DFLTM2 /GET NUMBER BACK IN FAC | |
| 1258 | JMP DSCLIN | |
| 1259 | DINGCH, JMS I (FMTIN /GET A CHAR | |
| 1260 | JMS I (CHTYPE /CLASSIFY IT | |
| 1261 | 1234; DDIGIT | |
| 1262 | -56; DIDCPT /. | |
| 1263 | -53; DINLOP /+ | |
| 1264 | -55; DINMIN /- | |
| 1265 | -4; DIND /D | |
| 1266 | -5; DIND /E - BE FORGIVING | |
| 1267 | -40; DINLOP /BLANK | |
| 1268 | -54; DINENM /, | |
| 1269 | 0 | |
| 1270 | DINER, JMP I (INER | |
| 1271 | ||
| 1272 | DIDCPT, DCA OD /ZERO COUNT OF DIGITS AFTER DEC PT | |
| 1273 | ISZ DDPSW /TEST + SET DEC PT SWITCH | |
| 1274 | JMP DINER /2 DEC. PT. IS NO GOOD | |
| 1275 | JMP DINLOP | |
| 1276 | DDIGIT, TAD CHCH | |
| 1277 | DCA I (DGT+1 /SAVE DIGIT | |
| 1278 | AC4000 | |
| 1279 | JMS I (FPGO | |
| 1280 | ACMDGT | |
| 1281 | TAD DDPSW | |
| 1282 | SNA CLA | |
| 1283 | ISZ OD /BUMP DIGIT IF DEC PT SEEN | |
| 1284 | JMP DINLOP | |
| 1285 | DDPSW, 0 | |
| 1286 | \f/6 WORD FLOATING NEGATE | |
| 1287 | ||
| 1288 | DFNEG, 0 | |
| 1289 | TAD EAC3 | |
| 1290 | CLL CMA IAC /NEGATE LOW ORDER WORD OF MANTISSA | |
| 1291 | DCA EAC3 /STORE IT BACK | |
| 1292 | CML RAL /ADJUST OVERFLOW+CARRY | |
| 1293 | TAD EAC2 /CONTINUE WITH REST OF MANTISSA | |
| 1294 | CMA IAC | |
| 1295 | DCA EAC2 | |
| 1296 | CML RAL | |
| 1297 | TAD EAC1 | |
| 1298 | CMA IAC | |
| 1299 | DCA EAC1 | |
| 1300 | CML RAL | |
| 1301 | TAD ACL | |
| 1302 | CMA IAC | |
| 1303 | DCA ACL | |
| 1304 | CML RAL | |
| 1305 | TAD ACH | |
| 1306 | CLL CMA IAC | |
| 1307 | DCA ACH | |
| 1308 | JMP I DFNEG | |
| 1309 | DINESW, 0 | |
| 1310 | PAGE | |
| 1311 | \f *FPPKG /EAE PKG LOADS OVER REGULAR PKG | |
| 1312 | ||
| 1313 | LPBUF2, ZBLOCK 16 | |
| 1314 | LPBUF5 | |
| 1315 | ||
| 1316 | AL1BMP, 0 /*K* MUST BE AT SAME LOC AS NON-EAE VERSION | |
| 1317 | STA | |
| 1318 | TAD ACX | |
| 1319 | DCA ACX | |
| 1320 | JMS I (AL1 | |
| 1321 | JMP I AL1BMP | |
| 1322 | ||
| 1323 | /EAE FLOATING POINT INTERPRETER | |
| 1324 | /FOR PDP8/E WITH KE8-E EAE | |
| 1325 | ||
| 1326 | /W.J. CLOGHER, MODIFIED BY R.LARY FOR FORTRAN | |
| 1327 | ||
| 1328 | /FLOATING MULTIPLY--DOES 4 SINGLE MULTIPLIES WITH EAE | |
| 1329 | /THIS USES THE FACT THAT IF AC IS NON-ZERO WHEN YOU DO | |
| 1330 | /A MUY INSTR, THE AC IS ADDED TO RESULT OF THE MULTIPLY. | |
| 1331 | /(IN THE LOW ORDER, NATCHERLY) | |
| 1332 | ||
| 1333 | DDMPY, JMS I (DARGET | |
| 1334 | SKP | |
| 1335 | FFMPY, JMS I (ARGET | |
| 1336 | JMS EMDSET /SET UP FOR MULT | |
| 1337 | CLA MUY /MULTIPLY-LOW ORDER FAC STILL IN MQ | |
| 1338 | OPH /THIS IS PRODUCT OF LOW ORDERS | |
| 1339 | MQL /ZAP LOW ORDER RESULT-INSIGNIFICANT | |
| 1340 | TAD ACH /GET LOW ORDER(!) OF FAC | |
| 1341 | SWP MUY /TO MQ-HIGH ORD. RESLT OF LAST MPY | |
| 1342 | OPL /TO AC-WILL BE ADDED TO RESLT-THIS | |
| 1343 | DST /IS PRODUCT-LOW ORD FAC,HI ORD OP | |
| 1344 | AC0 /STORE RESULT | |
| 1345 | CLA | |
| 1346 | TAD ACL /HIGH ORDER FAC TO MQ | |
| 1347 | MQL | |
| 1348 | TAD OPX /GET OPERAND EXPONENT | |
| 1349 | TAD ACX /ADD FAC EXPONENT-GET SUM OF EXPS. | |
| 1350 | DCA ACX /STORE RESULT | |
| 1351 | MUY /MUL. HIGH ORDER FAC BY LOW ORD OP. | |
| 1352 | OPH /HIGH ORDER FAC WAS IN MQ | |
| 1353 | DAD /ADD IN RESULT OF SECOND MULTIPLY | |
| 1354 | AC0 | |
| 1355 | DCA ACH /STORE HIGH ORDER RESULT | |
| 1356 | TAD ACL /GET HIGH ORDER FAC | |
| 1357 | SWP /SEND IT TO MQ AND LOW ORD. RESULT | |
| 1358 | DCA AC0 /OF ADD TO AC-STORE IT | |
| 1359 | RAL /ROTATE CARRY TO AC | |
| 1360 | DCA ACL /STORE AWAY | |
| 1361 | MUY /NOW DO PRODUCT OF HIGH ORDERS | |
| 1362 | OPL /FAC HIGH IN MQ, OP HIGH IN OPL | |
| 1363 | DAD /ADD IN THE ACCUMULATED # | |
| 1364 | ACH | |
| 1365 | \f/MULTIPLIES DONE - MASSAGE RESULT | |
| 1366 | ||
| 1367 | SNA /ZERO? | |
| 1368 | JMP RTZRO /YES-GO ZERO EXPONENT | |
| 1369 | NMI /NO-NORMALIZE (1 SHIFT AT MOST!) | |
| 1370 | DCA ACH /STORE HIGH ORDER RESULT | |
| 1371 | CLA SCA /GET STEP CNTR-DID WE NEED A SHIFT? | |
| 1372 | SNA CLA | |
| 1373 | JMP SNCK /NO-JUST CHECK SIGN | |
| 1374 | TAD AC0 /YES - WATCH OUT FOR LOST ACCURACY! | |
| 1375 | RAL | |
| 1376 | DCA AC0 | |
| 1377 | SZL /IF HIGH ORDER BIT OF OVERFLOW WORD WAS ON, | |
| 1378 | DPIC /TURN MQ11 ON (IT WAS 0 FROM THE NMI) | |
| 1379 | CLA CMA /MUST DECREASE EXP. BY 1 | |
| 1380 | TAD ACX | |
| 1381 | RTZRO, DCA ACX /STORE BACK | |
| 1382 | SNCK, TAD AC0 | |
| 1383 | SPA CLA /IS HIGH ORDER OF OVERFLO WD. 1? | |
| 1384 | DPIC /YES-ADD 1 TO LOW ORDER-STILL IN MQ | |
| 1385 | TAD ACH | |
| 1386 | SMA | |
| 1387 | JMP EMDONE /WE DIDN'T OVERROUND - GOODY | |
| 1388 | LSR | |
| 1389 | 1 /BUT OVERROUNDING IS EASILY CORRECTED! | |
| 1390 | ISZ ACX / (OVERCORRECTED??) | |
| 1391 | NOP | |
| 1392 | ||
| 1393 | /COMMON CLEANUP ROUTINE FOR MULTIPLY AND DIVIDE | |
| 1394 | ||
| 1395 | EMDONE, ISZ EMSIGN /SHOULD SIGN BE MINUS? | |
| 1396 | SKP /NO | |
| 1397 | DCM /YES-DO IT | |
| 1398 | SNA | |
| 1399 | DCA ACX /FORCE EXPONENT 0 IF MANTISSA = 0 | |
| 1400 | DCA ACH /STORE IT BACK | |
| 1401 | SWP | |
| 1402 | DCA ACL | |
| 1403 | TAD DFLG | |
| 1404 | SMA SZA CLA | |
| 1405 | TAD ACX /IF D.P. INTEGER MODE AND ACX LESS THAN 0, | |
| 1406 | SNA /GO TO UNNORMALIZE RESULT | |
| 1407 | JMP I FPNXT /OTHERWISE BUMP RETN. AND RETN. | |
| 1408 | CMA | |
| 1409 | JMS I (ACSR | |
| 1410 | JMP I FPNXT | |
| 1411 | EMSIGN, 0 | |
| 1412 | \f/ROUTINE TO SET UP FOR MULTIPLY AND DIVIDE | |
| 1413 | ||
| 1414 | EMDSET, 0 | |
| 1415 | CLA CLL CMA RAL /MAKE A MINUS TWO | |
| 1416 | DCA EMSIGN /AND STORE IN EMSIGN. | |
| 1417 | DLD /GET HIGH ORDER MANTISSA OF OP. | |
| 1418 | OPH | |
| 1419 | SWP | |
| 1420 | SMA /NEGATIVE? | |
| 1421 | JMP .+3 /NO | |
| 1422 | DCM /YES-NEGATE IT | |
| 1423 | ISZ EMSIGN /BUMP SIGN COUNTER | |
| 1424 | SHL /SHIFT OPRND LEFT 1 TO AVOID OVRFLO | |
| 1425 | 1 | |
| 1426 | DST /STORE BACK-OPH CONTAINS LOW ORDER | |
| 1427 | OPH / OPL CONTAINS HIGH ORDER | |
| 1428 | DLD | |
| 1429 | ACH | |
| 1430 | SWP | |
| 1431 | SMA /FAC LESS THAN 0? | |
| 1432 | JMP .+4 /NO | |
| 1433 | DCM | |
| 1434 | ISZ EMSIGN | |
| 1435 | NOP /EMSIGN MAY BUMP TO 0 | |
| 1436 | DST /STORE BACK - ACH CONTAINS LOW ORDER | |
| 1437 | ACH / ACL CONTAINS HIGH ORDER | |
| 1438 | JMP I EMDSET | |
| 1439 | PAGE | |
| 1440 | \f/FLOATING DIVIDE-BY-0 ROUTINE - MUST BE AT 0 IN PAGE | |
| 1441 | ||
| 1442 | DBAD, ISZ FATAL /DIVIDE BY 0 NON-FATAL | |
| 1443 | JMS I ERR | |
| 1444 | TAD DBAD | |
| 1445 | DCA ACX /SET AC TO A LARGE POSITIVE NUMBER | |
| 1446 | AC2000 | |
| 1447 | JMP I (EMDONE | |
| 1448 | ||
| 1449 | /FLOATING DIVIDE | |
| 1450 | ||
| 1451 | DDDIV, JMS I (DARGET | |
| 1452 | SKP | |
| 1453 | FFDIV, JMS I (ARGET | |
| 1454 | JMS I (EMDSET /GET ARG. AND SET UP SIGNS | |
| 1455 | DVI /DIVIDE-ACH AND ACL IN AC,MQ | |
| 1456 | OPL /THIS IS HI (!) ORDER DIVISOR | |
| 1457 | DST /QUOT TO AC0,REM TO AC1 | |
| 1458 | AC0 | |
| 1459 | SZL CLA /DIVIDE ERROR? | |
| 1460 | JMP DBAD /YES - HANDLE IT | |
| 1461 | TAD OPX /DO EXPONENT CALCULATION | |
| 1462 | CMA IAC /EXP. OF FAC - EXP. OF OP | |
| 1463 | TAD ACX | |
| 1464 | DCA ACX | |
| 1465 | DPSZ /IS QUOT = 0? | |
| 1466 | SKP /NO-GO ON | |
| 1467 | DCA ACX /YES-ZERO EXPONENT | |
| 1468 | DVLP, MUY /NO-THIS IS Q*OPL*2**-12 | |
| 1469 | OPH | |
| 1470 | DCM /NEGATE IT | |
| 1471 | TAD AC1 /SEE IF GREATER THAN REMAINDER | |
| 1472 | SNL | |
| 1473 | JMP EDVOPS /YES-ADJUST FIRST DIVIDE | |
| 1474 | DVI /NO-DO Q*OPL*2**-12/OPH | |
| 1475 | OPL | |
| 1476 | SZL CLA /DIV ERROR? | |
| 1477 | JMP DBAD /YES | |
| 1478 | EDVLP1, TAD AC0 /NO-GET QUOT OF FIRST DIV. | |
| 1479 | SMA /NEGATIVE? | |
| 1480 | JMP I (EMDONE /NO-REMEMBER-QUOT OF 2ND DIV. IN MQ | |
| 1481 | LSR /YES-MUST SHIFT IT RIGHT 1 | |
| 1482 | 1 | |
| 1483 | ISZ ACX /ADJUST EXPONENT | |
| 1484 | NOP | |
| 1485 | SGT /TEST SHIFTED OUT BIT | |
| 1486 | JMP I (EMDONE /ZERO - NO ROUND | |
| 1487 | DPIC /BUMP AC FRACTION | |
| 1488 | JMP EDVLP1+1 /MAYBE SHIFT AGAIN | |
| 1489 | \f/CONTINUATION OF DIVIDE ROUTINE | |
| 1490 | /WE ARE ADJUSTING THE RESULT OF THE | |
| 1491 | /FIRST DIVIDE. | |
| 1492 | ||
| 1493 | EDVOPS, CMA IAC | |
| 1494 | DCA AC1 /ADJUST REMAINDER | |
| 1495 | TAD OPL /WATCH FOR OVERFLOW | |
| 1496 | CLL CMA IAC | |
| 1497 | TAD AC1 | |
| 1498 | SNL | |
| 1499 | JMP EDVOP1 /DON'T ADJUST QUOT. | |
| 1500 | DCA AC1 | |
| 1501 | CMA | |
| 1502 | TAD AC0 | |
| 1503 | DCA AC0 /REDUCE QUOT BY 1 | |
| 1504 | EDVOP1, CLA CLL | |
| 1505 | TAD AC1 /GET REMAINDER | |
| 1506 | SNA /ZERO? | |
| 1507 | CAM /YES-ZERO EVERYTHING | |
| 1508 | DVI /NO | |
| 1509 | OPL | |
| 1510 | SZL CLA /DIV. OVERFLOW? | |
| 1511 | JMP DBAD /YES | |
| 1512 | DCM /NO-ADJUST HI QUOT (MAYBE) | |
| 1513 | JMP EDVLP1 /GO BACK | |
| 1514 | ||
| 1515 | /ROUTINE TO NORMALIZE THE FAC | |
| 1516 | ||
| 1517 | EFFNOR, 0 | |
| 1518 | CDF 0 | |
| 1519 | DLD /PICK UP MANTISSA | |
| 1520 | ACH | |
| 1521 | SWP /PUT IT IN CORRECT ORDER | |
| 1522 | NMI /NORMALIZE IT | |
| 1523 | SNA /IS THE # ZERO? | |
| 1524 | DCA ACX /YES-INSURE ZERO EXPONENT | |
| 1525 | DCA ACH /STORE HIGH ORDER BACK | |
| 1526 | SWP /STORE LOW ORDER BACK | |
| 1527 | DCA ACL | |
| 1528 | CLA SCA /STEP COUNTER TO AC | |
| 1529 | CMA IAC /NEGATE IT | |
| 1530 | TAD ACX /AND ADJUST EXPONENT | |
| 1531 | DCA ACX | |
| 1532 | JMP I EFFNOR /RETURN | |
| 1533 | ||
| 1534 | ADDRS, OPH | |
| 1535 | ACH | |
| 1536 | ||
| 1537 | LPBUF5, ZBLOCK 50 | |
| 1538 | LPBUF7 | |
| 1539 | PAGE | |
| 1540 | \f/"OPNEG" MUST BE AT 0 IN PAGE | |
| 1541 | ||
| 1542 | OPNEG, 0 /ROUTINE TO NEGATE OPERAND | |
| 1543 | DLD | |
| 1544 | OPH | |
| 1545 | SWP | |
| 1546 | DCM | |
| 1547 | DCA OPH | |
| 1548 | MQA | |
| 1549 | DCA OPL | |
| 1550 | JMP I OPNEG | |
| 1551 | ||
| 1552 | /FLOATING ADD AND SUBTRACT-IN ORDER NOT TO LOSE BITS, | |
| 1553 | /WE DO NOT SHIFT BOTH NUMBERS RIGHT 1 BIT BEFORE ADD- | |
| 1554 | /ONLY SHIFTS DONE ARE TO ALIGN EXPONENTS. | |
| 1555 | ||
| 1556 | FFSUB, JMS I (ARGET | |
| 1557 | JMS OPNEG /NEGATE OPERAND | |
| 1558 | SKP | |
| 1559 | FFADD, JMS I (ARGET /PICK UP ARGUMENTS | |
| 1560 | TAD OPH | |
| 1561 | SNA CLA /IF OPERAND IS 0, | |
| 1562 | JMP I FPNXT /RESULT IS ALREADY IN AC. | |
| 1563 | TAD ACH | |
| 1564 | SZA CLA /CHECK FOR AC=0 | |
| 1565 | JMP BOTHN0 /NO | |
| 1566 | DLD | |
| 1567 | OPH /YES - ANSWER IS OPERAND | |
| 1568 | SWP | |
| 1569 | DCA ACH | |
| 1570 | JMP FADND /JUMP INTO CLEANUP CODE | |
| 1571 | BOTHN0, TAD OPX /PICK UP EXPONENT OF OPERAND | |
| 1572 | MQL /SEND IT TO MQ FOR SUBTRACT | |
| 1573 | TAD ACX /GET EXPONENT OF FAC | |
| 1574 | SAM /SUBTRACT-RESULT IN AC | |
| 1575 | SPA /NEGATIVE RESULT? | |
| 1576 | CMA IAC /YES-MAKE IT POSITIVE | |
| 1577 | DCA CNT /STORE IT AS A SHIFT COUNT | |
| 1578 | TAD CNT /COUNT TOO BIG?(CAN'T BE ALIGNED) | |
| 1579 | TAD (-27 | |
| 1580 | SPA SNA CLA | |
| 1581 | CMA /NO-OK | |
| 1582 | DCA AC0 /YES-MAKE IT A LOAD OF LARGEST # | |
| 1583 | DLD /GET ADDRESSES TO SEE WHO'S SHIFTED | |
| 1584 | ADDRS | |
| 1585 | SGT /WHICH EXP GREATER(GT FLG SET | |
| 1586 | /BY SUBTR. OF EXPS.) | |
| 1587 | SWP /OPERAND'S-SHIFT THE FAC | |
| 1588 | DCA SHFBG /STORE ADDRESS OF WHO GETS SHIFTED | |
| 1589 | SWP /GET ADDRESS OF OTHER (0 TO MQ) | |
| 1590 | DCA DADR /THIS ONE JUST GETS ADDED | |
| 1591 | TAD ACX /GET FAC EXP.INTO AC | |
| 1592 | SGT /WHICH EXPONENT WAS GREATER? | |
| 1593 | DCA OPX /FAC'S-STORE FINAL EXP. IN OPX | |
| 1594 | \f DLD /GET THE LARGER # TO AC,MQ | |
| 1595 | DADR, 0 | |
| 1596 | SWP /PUT IN THE RIGHT ORDER | |
| 1597 | ISZ AC0 /COULD EXPONENTS BE ALIGNED? | |
| 1598 | JMP LOD /NO-JUST LEAVE LARGER IN AC,MQ | |
| 1599 | DST /YES-STORE THIS TEMPORARILY | |
| 1600 | AC0 /(IF ONLY FAC STORAGE WAS REVERSED) | |
| 1601 | DLD /GET THE SMALLER # | |
| 1602 | SHFBG, 0 | |
| 1603 | SWP /PUT IT IN RIGHT ORDER | |
| 1604 | ASR /DO THE ALIGNMENT SHIFT | |
| 1605 | CNT, 0 | |
| 1606 | DAD /ADD THE LARGER # | |
| 1607 | AC0 | |
| 1608 | DST /STORE RESULT | |
| 1609 | AC0 | |
| 1610 | SZL /OVERFLOW?(L NOT = SIGN BIT) | |
| 1611 | CMA /NOTE-WE DIDN'T SHIFT BOTH RIGHT 1 | |
| 1612 | SMA CLA | |
| 1613 | JMP NOOV /NOPE | |
| 1614 | CLA CLL CML RAR /MAYBE-SEE IF 2 #S HAD SAME SIGN | |
| 1615 | AND ACH | |
| 1616 | TAD OPH | |
| 1617 | SMA CLA /SIGNS ALIKE? | |
| 1618 | JMP OVRFLO /YES-OVERFLOW | |
| 1619 | NOOV, AC4000 /NO-GET HIGH ORDER RESULT BACK | |
| 1620 | TAD AC1 /CHECK FOR 4000 0000 MANTISSA | |
| 1621 | DPSZ /IT WILL BE SET TO 0 BY NMI | |
| 1622 | JMP .+3 /OK-RESTORE NUMBER | |
| 1623 | AC2000 /GOT A 4000 0000-SET TO 6000 0000 | |
| 1624 | JMP DOIT /AND INCREMENT EXPONENT | |
| 1625 | TAD (4000 /RESTORE NUMBER | |
| 1626 | LOD, NMI /NORMALIZE (LOW ORDER STILL IN MQ) | |
| 1627 | DCA ACH /STORE FINAL RESULT | |
| 1628 | SCA /GET SHIFT COUNTER(# OF NMI SHIFTS) | |
| 1629 | CMA /NEGATE IT | |
| 1630 | ADON, IAC | |
| 1631 | FADND, TAD OPX /AND ADJUST FINAL EXPONENT | |
| 1632 | DCA ACX | |
| 1633 | SWP /GET AND STORE LOW ORDER | |
| 1634 | DCA ACL | |
| 1635 | JMP I FPNXT /RETURN | |
| 1636 | OVRFLO, TAD AC1 /OVERFLOW-GET HIGH ORDER RESLT BACK | |
| 1637 | ASR /SHIFT IT RIGHT 1 | |
| 1638 | 1 | |
| 1639 | DOIT, TAD (4000 /REVERSE SIGN BIT | |
| 1640 | DCA ACH /AND STORE | |
| 1641 | JMP ADON /DONE | |
| 1642 | ||
| 1643 | LPBUF7, ZBLOCK 34 | |
| 1644 | LPBUFE | |
| 1645 | PAGE | |
| 1646 | \f *7400 /RTS CLEANUP ROUTINE - SAVED WITH PG 17600 | |
| 1647 | ||
| 1648 | CLNUP, DCA I CFPTR /ENTER HERE ON ^C OR ERROR | |
| 1649 | TDEXFG, JMP CTMP /ENTER HERE ON "STOP" OR "CALL EXIT" | |
| 1650 | TAD TDEXFG /TDEXFG CONTAINS TOP MEM FIELD | |
| 1651 | CLL RTL /IF WE ARE ON AN IN-CORE TD8E CONFIGURATION | |
| 1652 | RAL | |
| 1653 | TAD (CDF | |
| 1654 | DCA TDGTDF | |
| 1655 | TDGTDF, HLT | |
| 1656 | TAD I TDPTR /MOVE THE TD8E ROUTINE | |
| 1657 | CDF 20 | |
| 1658 | DCA I TDPTR /DOWN TO FIELD 2 | |
| 1659 | ISZ TDPTR | |
| 1660 | JMP TDGTDF | |
| 1661 | CDF 0 | |
| 1662 | TAD (CIF 20 | |
| 1663 | JMS TDSET /RESET THE F0 CDF'S TO POINT TO FIELD 2 | |
| 1664 | CTMP, CDF 0 | |
| 1665 | TAD (6213 | |
| 1666 | DCA I (7605 | |
| 1667 | TAD (5267 | |
| 1668 | DCA I (7606 /RESTORE PAGE 7600 | |
| 1669 | AC7776 | |
| 1670 | AND I (OSJSWD | |
| 1671 | IAC | |
| 1672 | DCA I (OSJSWD /MARK 10000-11777 AS USELESS | |
| 1673 | AND I 0 | |
| 1674 | AND I 0 /DELAY A WHILE IN CASE ITS AN LA30 | |
| 1675 | AND I 0 | |
| 1676 | AND I 0 | |
| 1677 | AND I 0 | |
| 1678 | TSF | |
| 1679 | SKP | |
| 1680 | JMP WTOVR | |
| 1681 | ISZ ZERO | |
| 1682 | TAD I (TOCHR /IF TTY IS NOT IDLE, | |
| 1683 | SZA CLA /DELAY LONG ENOUGH TO AVOID GARBLE. | |
| 1684 | JMP CTMP | |
| 1685 | WTOVR, TAD I (7777 | |
| 1686 | CLL RAL | |
| 1687 | SMA CLA /IS BATCH EXECUTING? | |
| 1688 | JMP NOBTCH /NO - RELAX | |
| 1689 | TAD (212 /TO PREVENT OVERPRINTING, POP UP A LINE | |
| 1690 | TLS /ON THE TELETYPE | |
| 1691 | LLS /AND ON THE LINE PRINTER | |
| 1692 | TSF | |
| 1693 | JMP .-1 /WAIT FOR THE SLOWER ONE (I HOPE) | |
| 1694 | CLA | |
| 1695 | \fNOBTCH, CDF 10 | |
| 1696 | CLOSLP, TAD I CFPTR | |
| 1697 | SNA /ANY MORE ENTRIES IN THE TENTATIVE | |
| 1698 | JMP GOAWAY /FILE TABLE? | |
| 1699 | DCA CTMP /YES - SAVE FILE LENGTH PTR | |
| 1700 | CDF 0 | |
| 1701 | TAD I CTMP | |
| 1702 | CDF 10 | |
| 1703 | SNA | |
| 1704 | JMP IGNORC /UNWRITTEN FILES AREN'T CLOSED | |
| 1705 | DCA FLEN | |
| 1706 | JMS I USR | |
| 1707 | 10 /BRING USR IN | |
| 1708 | TAD (200 | |
| 1709 | DCA USR /KEEP IT IN | |
| 1710 | TAD (HPLACE+1 | |
| 1711 | DCA CHAND | |
| 1712 | JMS I USR | |
| 1713 | 13 /RESET DEVICE HANDLER TABLE | |
| 1714 | 0 /BUT NOT TENTATIVE FILES! | |
| 1715 | ISZ CFPTR | |
| 1716 | TAD I CFPTR /GET UNIT NUMBER | |
| 1717 | JMS I USR | |
| 1718 | 1 | |
| 1719 | CHAND, 0 /FETCH HANDLER | |
| 1720 | JMP CLSERR | |
| 1721 | TAD I CFPTR /GET UNIT AGAIN | |
| 1722 | ISZ CFPTR /BUMP PTR TO NAME | |
| 1723 | JMS I USR | |
| 1724 | C4, 4 | |
| 1725 | CFPTR, 7600 /CLOSE THE FILE | |
| 1726 | FLEN, 0 | |
| 1727 | JMP CLSERR | |
| 1728 | SKP | |
| 1729 | IGNORC, AC0002 | |
| 1730 | TAD CFPTR | |
| 1731 | TAD C4 | |
| 1732 | DCA CFPTR | |
| 1733 | JMP CLOSLP /LOOK FOR MORE | |
| 1734 | ||
| 1735 | TDSET, 0 | |
| 1736 | DCA I (7721 | |
| 1737 | TAD I (7721 | |
| 1738 | DCA I (7727 | |
| 1739 | TAD I (7721 | |
| 1740 | IAC | |
| 1741 | DCA I (7642 | |
| 1742 | JMP I TDSET | |
| 1743 | \fGOAWAY, CDF CIF 0 | |
| 1744 | JMP I (7605 /RETURN TO OS/8 AQAP | |
| 1745 | CLSERR, JMS I USR /"IMPOSSIBLE" ERROR - GIVE "USER ERROR 2" | |
| 1746 | 7 | |
| 1747 | 2 /IT'S BETTER THAN HALTING | |
| 1748 | ||
| 1749 | TDPTR, 7600 | |
| 1750 | ZERO, 0 | |
| 1751 | USR, 7700 | |
| 1752 | $$$-$$$-$$$ | |
| 1753 | \f |