| 1 | / \ ePDPPLT.RA\ e\r |
| 2 | /\r |
| 3 | / PART ONE OF DEC'S XYPLOT DEC-S8-LPLTA-A-LA JULY 1973 M. HURLEY\r |
| 4 | / INCLUDED IS THE LATEST UPDATE F4 4.AAAA FROM LIBRARY FORLIB.RL NOV. 77\r |
| 5 | / COPIED: J.J. ANDRES 1.NOV. 1980\r |
| 6 | /\r |
| 7 | / PLOTTER ROUTINES FOR OS8 FORTRAN 4 FOR LAB 8/E ONLY!\r |
| 8 | / VER 1.0 1. NOV. 1980 H.A.\r |
| 9 | / VER 2.0 12. NOV. 1980 H.A.\r |
| 10 | / VER 2.1 18. NOV. 1981 H.A.\r |
| 11 | /\r |
| 12 | / UPDATES:\r |
| 13 | / 1. PLEXIT DISABLED THE PLOTTER INTERRUPTS AT ALL AND PLOTS DID\r |
| 14 | / NOT SWITCH THEM ON A SECOND TIME.\r |
| 15 | / 2. X-Y PLOTTER CANNOT BE DRIVEN TO THE ORIGIN (0,0) BY PLOTS.\r |
| 16 | / * #XNTST IS CALLED FROM PLOTS EACH TIME PLOTS ITSELF IS CALLED.\r |
| 17 | / * NOW #XNTST TEST AND SETS THE ONCE FLAG.\r |
| 18 | / * #XNTST PUSHES THE PLOTTER 4095 TIMES INTO THE LOWER LEFT CORNER.\r |
| 19 | / 1-NOV-1980 H.A.\r |
| 20 | / 3. #XMSMBP = ADDR SYMBTB\r |
| 21 | / #XSMBP = ADDR SYMCNT\r |
| 22 | / THESE TWO VALUES ARE NOW INSERTED VIA A CALL TO SYMBOL.\r |
| 23 | / SYMBOL CALLS #XMBTB TO SWAP IN THE SYMBOL TABLE OVERLAY.\r |
| 24 | / 12-NOV-1980 H.A.\r |
| 25 | /\r |
| 26 | \f/\r |
| 27 | / THE PDP8 CODE LOCATED IN FIELD 1\r |
| 28 | /\r |
| 29 | /\r |
| 30 | / INTO THESE WORDS SYMBOL INSERTS THE ADR. OF THE SYMBOL TABLE AND LENGTH\r |
| 31 | / THIS MUST BE DONE SINCE THE SYMBOL TABLE #XMBTB MAY BE LOCATED INTO\r |
| 32 | / AN OVERLAY AND THEREFORE THE ADDR DIRECTIVE WILL PRODUCE WRONG CODE.\r |
| 33 | / THE LOADER INSERTS THE ADR. OF THE OVERLAY LOADER BUT NOT THE DESIRED\r |
| 34 | / ONE.\r |
| 35 | /\r |
| 36 | ENTRY #XMCNT\r |
| 37 | ENTRY #XSMBP\r |
| 38 | / \r |
| 39 | / EXTERNAL REFERENCED FROM XYPLOT ONLY\r |
| 40 | /\r |
| 41 | / ENTRIES USED BY XYPLOT:\r |
| 42 | ENTRY #XOLDP\r |
| 43 | ENTRY #XXOLD\r |
| 44 | ENTRY #XYOLD\r |
| 45 | ENTRY #XPENC\r |
| 46 | ENTRY #XINCR\r |
| 47 | ENTRY #XFCTX\r |
| 48 | ENTRY #XFCTY\r |
| 49 | ENTRY #XETXR\r |
| 50 | ENTRY #XETUP\r |
| 51 | ENTRY #XDPXR\r |
| 52 | ENTRY #XATIO\r |
| 53 | ENTRY #XNPLT\r |
| 54 | ENTRY #XCHTP\r |
| 55 | ENTRY #XCHCK\r |
| 56 | ENTRY #XNTST\r |
| 57 | ENTRY #XDNCK\r |
| 58 | /\r |
| 59 | / ENTRIES USED BY SYMBOL\r |
| 60 | /\r |
| 61 | ENTRY #XNDLF\r |
| 62 | ENTRY #XNDRT\r |
| 63 | ENTRY #XLEFT\r |
| 64 | ENTRY #XLTCD\r |
| 65 | ENTRY #XPSIN\r |
| 66 | ENTRY #XPSNM\r |
| 67 | ENTRY #XPNOP\r |
| 68 | ENTRY #XRGHT\r |
| 69 | ENTRY #XTXAD\r |
| 70 | /\r |
| 71 | PLCE= 06500 / CLEAR INTERRUPT ENABLE\r |
| 72 | PLSF= 06501 / SKIP ON PLOTTER FLAG SET\r |
| 73 | PLCF= 06502 / CLEAR PLOTTER FLAG\r |
| 74 | PLLR= 06504 / LOAD PLOTTER DIRECTION REGISTER\r |
| 75 | PLSE= 06507 / SET INTERRUPT ENABLE\r |
| 76 | /\r |
| 77 | /\r |
| 78 | FIELD1 PDPPLT\r |
| 79 | / ALL THESE ROUTINES USES XRS TO GET ARGS FROM FPP CODE\r |
| 80 | EXTERN ONQI\r |
| 81 | EXTERN #DISMS\r |
| 82 | /ASSUMES USER ADDED 6502(CLEAR FLAG) TO FRTS CLEAR QUEUE\r |
| 83 | #XNTST, ORG .+1 / INIT PTRS + ADD JOB TO INTERRUPT QUEUE\r |
| 84 | CLA CMA / SET UP POINTERS\r |
| 85 | DCA% PBFCNT+1 / COUNTER FOR LOCN OF NEXT CHARACTER TO PLOT\r |
| 86 | TAD UBUFL / COMPL. LENGTH OF BUFFER --> AC\r |
| 87 | DCA% PMBFLG+1 / RESET BUFFER POINTERS\r |
| 88 | TAD PUBFMN+1\r |
| 89 | DCA% OCHAR+1\r |
| 90 | TAD PUBFMN+1\r |
| 91 | DCA% ICHAR+1\r |
| 92 | TAD DISMS+1\r |
| 93 | DCA% PDISMS+1 / FOR HANG\r |
| 94 | ISZ ONCE / TEST THE ONCE ONLY FLAG\r |
| 95 | JMP .+5\r |
| 96 | JMS% VONQI+1 / ADD PLOTTER INTO THE INTERRUPT QUEUE ONLY ONCE\r |
| 97 | PLSF / CODE TO DETECT IF PLOTTER INTERRUPTED\r |
| 98 | ADDR INTPLT / ADR. OF INTERRUPT SERVICE ROUTINE\r |
| 99 | CLA\r |
| 100 | DCA ONCE / CLEAR THE ONCE ONLY FLAG TO ZERO\r |
| 101 | / THIS IS FOR GUYES PLOTTING MORE THAN 4095 DRAWINGS WITH ONE PROGRAM.\r |
| 102 | / SOME PEOPLE ARE CRAZY, AREN'T THEY?\r |
| 103 | DCA PREP / SET UP COUNTER TO RESET PEN TO ORIGIN 0,0\r |
| 104 | TAD PENUP / LIFT PEN AND THEN\r |
| 105 | JMS PLOTIT\r |
| 106 | CLA\r |
| 107 | TAD DECRXY / GO 4096 STEPS TO THE LEFT CORNER DOWN\r |
| 108 | JMS REPIT\r |
| 109 | PLCF / CLEAR FLAG FROM THE LAST STEP\r |
| 110 | ION PLSE / ENABLE PLOTTER INTERRUPTS\r |
| 111 | CIF CDF\r |
| 112 | JMP% #XNTST\r |
| 113 | /\r |
| 114 | / THIS ROUTINE RESETS X-Y PLOTTER TO 0,0\r |
| 115 | PENUP, 2\r |
| 116 | DECRXY, 44\r |
| 117 | /\r |
| 118 | REPIT, ORG .+1\r |
| 119 | JMS PLOTIT\r |
| 120 | ISZ PREP / REPEAT 4096 TIMES\r |
| 121 | JMP .-2\r |
| 122 | JMP% REPIT\r |
| 123 | PLOTIT, ORG .+1\r |
| 124 | IOF\r |
| 125 | PLCF PLLR\r |
| 126 | PLSF\r |
| 127 | JMP .-1\r |
| 128 | ION\r |
| 129 | JMP% PLOTIT\r |
| 130 | /\r |
| 131 | ONCE, 7777 / TO ADD PLSF INTO INTERRUPT QUEUE ONLY ONCE\r |
| 132 | PREP,\r |
| 133 | VONQI, ADDR ONQI\r |
| 134 | /THIS ROUTINE CALLED ONCE FOR EACH CALL TO XYPLOT\r |
| 135 | /AND DOES INITAL PEN UP OR DOWN\r |
| 136 | #XETUP, 0\r |
| 137 | TAD #XETXR / GET PEN STATE\r |
| 138 | AND A3\r |
| 139 | CLL RAR / LOOK AT 3 BITS\r |
| 140 | SZA / SKIP IF 0\r |
| 141 | SNL CLA\r |
| 142 | IAC / 3=UP, 0-2=DOWN\r |
| 143 | CLL\r |
| 144 | JMS% QPLDBL+1\r |
| 145 | CDF CIF\r |
| 146 | JMP% #XETUP\r |
| 147 | QPLDBL, ADDR PLDBL\r |
| 148 | A3, 3\r |
| 149 | #XETXR,\r |
| 150 | OCHAR, ADDR POCHAR+1\r |
| 151 | PBFCNT, ADDR BUFCNT\r |
| 152 | #XCHCK,\r |
| 153 | ICHAR, ADDR PICHAR+1\r |
| 154 | PMBFLG, ADDR MBUFLG\r |
| 155 | PUBFMN, ADDR USBFMN\r |
| 156 | DISMS, ADDR #DISMS\r |
| 157 | PDISMS, ADDR DISPTR\r |
| 158 | /\r |
| 159 | / FPP 12 VARIABLES SET BY XYPLOT WICH MAY NOT BE LOADED INTO AN OVERLAY\r |
| 160 | /\r |
| 161 | #XOLDP, ORG .+3 / VALUE OF PEN AT LAST XYPLOT\r |
| 162 | #XXOLD, ORG .+3 / OLD X PT WITH EFFECT OF FACTOR\r |
| 163 | #XYOLD, ORG .+3 / OLD Y PT WITH EFFECT OF FACTOR\r |
| 164 | #XPENC, ORG .+3 / OLD PEN STATUS (SYMBOL & NUMBER)\r |
| 165 | #XINCR, ORG .+3 / INCREMENT SIZE DEPENDENT OF EACH PLOTTER\r |
| 166 | #XFCTX, ORG .+3 / X - FACTOR\r |
| 167 | #XFCTY, ORG .+3 / Y - FACTOR\r |
| 168 | BUFFL= 435\r |
| 169 | UBUFL, -BUFFL / LENGTH OF BUFFER\r |
| 170 | USBFMN, ZBLOCK BUFFL / PLOTTING BUFFER\r |
| 171 | USBFMX, 0\r |
| 172 | \f ORG #XNTST+600\r |
| 173 | / THESE ROUTINES GET THE PLOTTING CODES WITHIN A LETTER\r |
| 174 | / PASS THEM AS X,Y PAIRS FOR PLOT ROUTINE\r |
| 175 | #XLEFT, 0\r |
| 176 | JMS GETXYS / GET A #XLEFT HAND X,Y PAIR\r |
| 177 | RTR\r |
| 178 | RTR\r |
| 179 | RTR\r |
| 180 | JMS PASSXY\r |
| 181 | CDF CIF\r |
| 182 | JMP% #XLEFT\r |
| 183 | P7, 7\r |
| 184 | PASSXY, 0\r |
| 185 | DCA LETCD2 / SAVE X,Y PAIR\r |
| 186 | TAD LETCD2\r |
| 187 | CLL RTR\r |
| 188 | RAR / GET IN LO THREE BITS\r |
| 189 | AND P7\r |
| 190 | DCA LETCD1 / PASS X VALUE\r |
| 191 | TAD LETCD2 / NOW FOR THE Y PART\r |
| 192 | AND P7\r |
| 193 | DCA LETCD2 / PASS THE Y VALUE\r |
| 194 | JMP% PASSXY\r |
| 195 | #XRGHT, 0 / GET A #XRGHT HAND X,Y PAIR\r |
| 196 | JMS GETXYS\r |
| 197 | JMS PASSXY\r |
| 198 | CDF CIF\r |
| 199 | JMP% #XRGHT\r |
| 200 | #XLTCD, 0\r |
| 201 | LETCD1, 0\r |
| 202 | LETCD2, 0\r |
| 203 | \f/ THIS ROUTINE GETS X,Y PAIRS FROM THE PACKED SEQ FOR EACH LETTER\r |
| 204 | GETXYS, 0\r |
| 205 | TAD #XLTCD\r |
| 206 | CLL\r |
| 207 | TAD LOCNPT / START OF LETTER CODE\r |
| 208 | DCA LETCD2 / UPDATE PTR TO LETTER\r |
| 209 | RAL / IF LINK SET, CROSSED FIELDS, SO UPDATE FIELD\r |
| 210 | / POINTER\r |
| 211 | TAD LOCNFL / FIELD PASSED FROM FINDIT ROUTINE\r |
| 212 | CLL RTL\r |
| 213 | RAL\r |
| 214 | TAD CDFINS\r |
| 215 | DCA NFLD\r |
| 216 | NFLD, 0 / GET FIELD\r |
| 217 | TAD% LETCD2 / GET PLOTTING CODES\r |
| 218 | CDF 10\r |
| 219 | JMP% GETXYS\r |
| 220 | CDFINS, 6201\r |
| 221 | LOCNFL, 0 / FIELD\r |
| 222 | LOCNPT, 0\r |
| 223 | \f/ HERES START OF THE TABLE FOR PDP-8 ES\r |
| 224 | OCT8BL, 6503 / PEN UP\r |
| 225 | 6505 / PEN DOWN\r |
| 226 | / GEOM. OCTANT 1=CODED OCTANT 8, 2=7, 3=3, 4=4, 5=2, 6=1, 8=6\r |
| 227 | 40 / PEN R\r |
| 228 | 44 \r |
| 229 | 4 / DRUM UP\r |
| 230 | 44\r |
| 231 | 20 / PEN L\r |
| 232 | 24\r |
| 233 | 4 / DRUM UP\r |
| 234 | 24\r |
| 235 | 40 / PEN R\r |
| 236 | 50\r |
| 237 | 10 / DRUM D\r |
| 238 | 50\r |
| 239 | 20 / PEN L\r |
| 240 | 30\r |
| 241 | 10 / DRUM D\r |
| 242 | 30\r |
| 243 | / THIS IS THE START OF THE PLOT VECTOR TABLE FOR PDP-12S\r |
| 244 | OCT12, 6504 / PEN UP\r |
| 245 | 6524 / DOWN\r |
| 246 | 6511 / PEN #XRGHT\r |
| 247 | 6513 \r |
| 248 | 6522 / DRUM UP\r |
| 249 | 6513\r |
| 250 | 6521 / PEN #XLEFT\r |
| 251 | 6523\r |
| 252 | 6522 / DRUM UP\r |
| 253 | 6523\r |
| 254 | 6511 / PEN #XRGHT\r |
| 255 | 6515\r |
| 256 | 6514 / DRUM DOWN\r |
| 257 | 6515\r |
| 258 | 6521 / PEN #XLEFT\r |
| 259 | -6514 / 2 WORD IOT\r |
| 260 | 6514 / DRUM DOWN\r |
| 261 | -6514\r |
| 262 | \f/ FIGURE OUT IF A MAJOR MOVE OR MAJ+MINOR\r |
| 263 | FIGURE, 0\r |
| 264 | CLL\r |
| 265 | TAD RATIO2\r |
| 266 | TAD HOLD2\r |
| 267 | DCA HOLD2 / ADD LO WORDS\r |
| 268 | RAL / CARRY LINK\r |
| 269 | TAD RATIO1\r |
| 270 | TAD HOLD1 / ADD HIGH WORDS\r |
| 271 | DCA HOLD1\r |
| 272 | CLL\r |
| 273 | TAD HOLD1\r |
| 274 | RAL / G.T. 1?\r |
| 275 | SNL\r |
| 276 | JMP MAJONL / NO-MAJOR MOVE ONLY\r |
| 277 | CLL RAR / PUT IT BACK-1\r |
| 278 | DCA HOLD1\r |
| 279 | IAC\r |
| 280 | JMP% FIGURE / RETURN WITH AC=1\r |
| 281 | MAJONL, CLA\r |
| 282 | JMP% FIGURE / RETURN WITH ZERO AC\r |
| 283 | #XATIO, 0 / #XATIO CALCULATED IN REALPT\r |
| 284 | RATIO1, 0\r |
| 285 | RATIO2, 0\r |
| 286 | HOLD1, 0\r |
| 287 | HOLD2, 0\r |
| 288 | / INITIALIZE HOLD1+2 TO A ROUNDING FUDGE\r |
| 289 | SPCAS, 0\r |
| 290 | DCA HOLD1\r |
| 291 | TAD RFUDGE\r |
| 292 | DCA HOLD2\r |
| 293 | JMP% SPCAS\r |
| 294 | RFUDGE, 1000 / TAKES CARE OF TRUNCATION ERRORS\r |
| 295 | \f ORG #XLEFT+200\r |
| 296 | NXTLCN,\r |
| 297 | PLETPS, ADDR LOCNPT / POINTS TO START OF CODE FOR PASSED LETTER\r |
| 298 | COUNT, / COUNT OF STEPS INTO CHAR PLOTTING CODE TABLE\r |
| 299 | PLCNM1, ADDR LOCNFL / USED TO PASS FIELD\r |
| 300 | #XTXAD, 0\r |
| 301 | 0\r |
| 302 | 0 / ADDRESS OF PACKED 6 BIT LETTERS TO PRINT\r |
| 303 | LETTER, 0\r |
| 304 | #XSMBP, / HERE WE INSERT THE ADR. OF THE SYMBOL TABLE\r |
| 305 | PSYMB, ORG .+2\r |
| 306 | PP7, 7\r |
| 307 | / THESE ROUTINES DETERMINE THE START OF PLOTTING CODES FOR A CHARACTER\r |
| 308 | / PASSED AS A HOLERITH (6 BIT) FROM SYMBOL ROUTINE.\r |
| 309 | / FIND LOCATION OF START OF PLOT VECTORS\r |
| 310 | / FOR THE #XLEFT HALF OF 2 6 BIT CHARACTERS\r |
| 311 | #XNDLF, 0\r |
| 312 | TAD #XTXAD+1 / DO FIELD STUFF\r |
| 313 | AND PP7\r |
| 314 | CLL RTL\r |
| 315 | RAL\r |
| 316 | TAD CDF\r |
| 317 | DCA DOCDF\r |
| 318 | DOCDF, NOP\r |
| 319 | TAD% #XTXAD+2 / GET TWO 6 BIT VALUES\r |
| 320 | CDF 10\r |
| 321 | DCA LETTER\r |
| 322 | CLL\r |
| 323 | TAD LETTER / MOVE #XLEFT CHARACTER\r |
| 324 | RTR\r |
| 325 | RTR\r |
| 326 | RTR\r |
| 327 | AND P77 / INTO THE #XRGHTMOST 6 BITS\r |
| 328 | JMS FINDIT\r |
| 329 | ISZ #XTXAD+2 / PREPARE FOR NEXT CHARACTER TO #XLEFT\r |
| 330 | JMP FLDOK / IF SKIPS, THEN AT FIELD BOUNDARY\r |
| 331 | ISZ #XTXAD+1 / SO UPDATE FIELD ALSO\r |
| 332 | FLDOK, CDF CIF\r |
| 333 | JMP% #XNDLF\r |
| 334 | \fFINDIT, 0 / GET LOC OF LETTER IN SYMBOL TABLE\r |
| 335 | SPA SNA / CHECK FOR ZERO\r |
| 336 | TAD P40 / WHICH DEFAULTS TO SPACE\r |
| 337 | CIA CLL / MAKE A COUNTER\r |
| 338 | DCA #XTXAD\r |
| 339 | DCA COUNT / ZERO TOTAL STEP COUNTER\r |
| 340 | TAD PTRTBL+1\r |
| 341 | DCA NXTLCN / POINTS TO LOCN IN POINTER TABLE\r |
| 342 | / THIS TABLE HAS STEPS FOR EACH LETTER, SO\r |
| 343 | / COUNT TOTAL STEPS TO DESIRED LETTER\r |
| 344 | TAD PTRTBL\r |
| 345 | CLL RTL\r |
| 346 | RAL\r |
| 347 | TAD CDF\r |
| 348 | DCA SCANTB\r |
| 349 | SCANTB, NOP\r |
| 350 | TAD% NXTLCN / GET NEXT STEP COUNT\r |
| 351 | CDF 10\r |
| 352 | TAD COUNT / AND ADD IT TO TOTAL STEP COUNT\r |
| 353 | DCA COUNT\r |
| 354 | ISZ NXTLCN / BUMP POINTER\r |
| 355 | SKP / SKIP IF DIDN'T CROSS BOUNDARIES\r |
| 356 | TAD P10 / IT DID, UPDATE FIELD WORD\r |
| 357 | TAD SCANTB\r |
| 358 | DCA SCANTB\r |
| 359 | ISZ #XTXAD\r |
| 360 | JMP SCANTB / NOT THERE YET\r |
| 361 | CLL\r |
| 362 | TAD COUNT / ADD COUNT TO\r |
| 363 | TAD PSYMB+1 / START OF CODE TABLE\r |
| 364 | DCA% PLETPS+1 / NOW IT'S CORRECT POINTER\r |
| 365 | RAL / IF LINK SET, WE CROSSED FIELD BOUNDARIES\r |
| 366 | TAD PSYMB / GET FIELD OF TABLE\r |
| 367 | DCA% PLCNM1+1 / PASS IT\r |
| 368 | JMP% FINDIT / GOT THE LETTER\r |
| 369 | P40, 40\r |
| 370 | P77, 77\r |
| 371 | #XMCNT, / HERE WE INSERT THE POINTER INTO THE SYMBOL TABLE\r |
| 372 | PTRTBL, ORG .+2\r |
| 373 | CDF, 6201\r |
| 374 | P10, 10\r |
| 375 | \f#XNDRT, 0\r |
| 376 | TAD LETTER / #XLEFT FROM LAST #XLEFT LETTER\r |
| 377 | AND P77\r |
| 378 | JMS FINDIT\r |
| 379 | CDF CIF\r |
| 380 | JMP% #XNDRT\r |
| 381 | / ROUTINE TO HANDLE NUMBERS FROM FORTRAN SUBR. NUMBER\r |
| 382 | / NOT CALLED BY USER DIRECTLY\r |
| 383 | #XPSNM, 0\r |
| 384 | TAD #XTXAD\r |
| 385 | IAC\r |
| 386 | SNA\r |
| 387 | JMP USZRO / IF EQ -1, USE 0\r |
| 388 | TAD T2\r |
| 389 | SPA / L.T. -3 BAD\r |
| 390 | JMP USZRO / SO USE ZERO\r |
| 391 | TAD M15\r |
| 392 | SPA CLA / G.T. 9 BAD TOO\r |
| 393 | JMP USEIT / IT'S -3,-2,0-9\r |
| 394 | USZRO, CLA\r |
| 395 | INDEX, TAD P60 / INDEX INTO TABLE\r |
| 396 | JMS FINDIT\r |
| 397 | CDF CIF\r |
| 398 | JMP% #XPSNM\r |
| 399 | USEIT, TAD #XTXAD\r |
| 400 | JMP INDEX\r |
| 401 | / PLOT AN INTEGER EQUIV OR CENTERED (100-117 DEC =144-165 OCT)\r |
| 402 | #XPSIN, 0\r |
| 403 | TAD #XTXAD\r |
| 404 | SPA SNA / .L.T. ZERO NO GOOD\r |
| 405 | JMP USSPAC\r |
| 406 | TAD M166 / G.T. 117 DEC. BAD\r |
| 407 | SMA\r |
| 408 | JMP USSPAC\r |
| 409 | TAD A22\r |
| 410 | SMA\r |
| 411 | JMP OKVAL / ITS A CENTERED 100-121 (0144-0165)\r |
| 412 | TAD P44\r |
| 413 | SMA CLA\r |
| 414 | JMP USSPAC / 0100-0143 ILLEGAL\r |
| 415 | TAD #XTXAD\r |
| 416 | ACHAR, JMS FINDIT\r |
| 417 | CDF CIF\r |
| 418 | JMP% #XPSIN\r |
| 419 | USSPAC, CLA\r |
| 420 | TAD P40 / DEFAULT TO SPACE\r |
| 421 | JMP ACHAR\r |
| 422 | OKVAL, TAD P100 / PASS CENTERED AS 100-121\r |
| 423 | JMP ACHAR\r |
| 424 | P100, 100\r |
| 425 | A22, 22\r |
| 426 | P44, 44\r |
| 427 | M166, -166\r |
| 428 | P60, 60\r |
| 429 | M15, -15\r |
| 430 | T2, 2\r |
| 431 | \f ORG NXTLCN+200\r |
| 432 | EXTERN #HANG\r |
| 433 | #XNPLT, 0 / NON INTERRUPT TIME PLOT ROUTINE\r |
| 434 | TAD TOTSTP\r |
| 435 | CMA\r |
| 436 | DCA TOTSTP\r |
| 437 | JMS% PSPCAS+1 / PREP FOR OCTANT CHECK\r |
| 438 | MORE, ISZ TOTSTP\r |
| 439 | JMP ANOTHR / DO ANOTHER STEP\r |
| 440 | DONE, CDF CIF / ALL DONE WITH THIS VECTOR\r |
| 441 | JMP% #XNPLT\r |
| 442 | ANOTHR, JMS% PFIGUR+1 / TO FIGURE OUT IF MAJ OR DIAG\r |
| 443 | / RETURNS ZERO IF MAJOR ONLY, 1 IF MAJ + MINOR\r |
| 444 | TAD #XDPXR / OCTANT\r |
| 445 | JMS PLDBL\r |
| 446 | JMP MORE\r |
| 447 | PLDBL, 0\r |
| 448 | TAD POCTBL+1 / START OF VECTOR TABLE\r |
| 449 | TAD #XCHTP / ADD 22 IF A PDP-12 OR NON 8-E\r |
| 450 | DCA PLTVCT / SAVE POINTER TO PROPER PLOT VECTOR\r |
| 451 | CIF 10\r |
| 452 | TAD BUFCNT / GET NUM. CHARACTERS IN BUF -1\r |
| 453 | TAD MBUFLG / AND MINUS LENGTH\r |
| 454 | CLL\r |
| 455 | SPA CLA\r |
| 456 | JMP ISROOM / STILL ROOM IN BUFFER\r |
| 457 | IOF / NO ROOM YET, GO TO HANG\r |
| 458 | CIF 0\r |
| 459 | JMS% PHANG+1\r |
| 460 | DISPTR, 0\r |
| 461 | ION / HANG LEAVES INTERRUPT OFF\r |
| 462 | ISROOM, TAD% PLTVCT / NOW GET THE VECTOR\r |
| 463 | DCA% PICHAR+1 / INTO BUFFER\r |
| 464 | ISZ PICHAR+1 / UPDATE LOCN\r |
| 465 | TAD PICHAR+1\r |
| 466 | CIA\r |
| 467 | TAD PBMX+1 / ARE WE OVERFLOWING MAX LOCN OF BUFFER\r |
| 468 | CLL\r |
| 469 | SMA CLA / PAST END ?\r |
| 470 | JMP LIMOK / NO\r |
| 471 | TAD PBMN+1 / YES, RESET TO BOTTOM\r |
| 472 | DCA PICHAR+1\r |
| 473 | LIMOK, ISZ BUFCNT / UPDATE CHAR COUNT\r |
| 474 | / IF EMPTY WAS -1, SO NOW 0\r |
| 475 | JMP% PLDBL / WASNT EMPTY-CANT START TO PLOT\r |
| 476 | JMP OUTSUB\r |
| 477 | \f#XPNOP, 0\r |
| 478 | TAD #XDPXR / USE AS INDEX INTO OPCODE TABLE\r |
| 479 | JMS PLDBL\r |
| 480 | CDF CIF\r |
| 481 | JMP% #XPNOP\r |
| 482 | #XDPXR, 0\r |
| 483 | TOTSTP, 0\r |
| 484 | PSPCAS, ADDR SPCAS\r |
| 485 | POCHAR, ADDR USBFMN\r |
| 486 | INTFLG, / HANG ALWAYS FIELD 0\r |
| 487 | PHANG, ADDR #HANG\r |
| 488 | PICHAR, ADDR USBFMN\r |
| 489 | BUFCNT,\r |
| 490 | POCTBL, ADDR OCT8BL\r |
| 491 | MBUFLG,\r |
| 492 | PBMN, ADDR USBFMN\r |
| 493 | #XCHTP,\r |
| 494 | PFIGUR, ADDR FIGURE\r |
| 495 | PLTVCT,\r |
| 496 | PBMX, ADDR USBFMX\r |
| 497 | \fOUTSUB, CLA\r |
| 498 | TAD% POCHAR+1 / GET NEXT LINE TO PLOT\r |
| 499 | DCA QTEMP5 / SAVE ACTUAL VECTOR FOR A SECOND\r |
| 500 | ISZ POCHAR+1\r |
| 501 | TAD POCHAR+1\r |
| 502 | CIA\r |
| 503 | TAD PBMX+1 / CHECK THAT OUTPUT DOESNT OVERFLOW THE BUFFER\r |
| 504 | CLL\r |
| 505 | SMA CLA / WILL IT?\r |
| 506 | JMP CLRFLG / NO\r |
| 507 | TAD PBMN+1 / YES\r |
| 508 | DCA POCHAR+1 / RESET IT\r |
| 509 | CLRFLG, 6502\r |
| 510 | TAD QTEMP5 / GET VARIABLE\r |
| 511 | AND A7000 / DETERMINE TYPE OF PLOTTER\r |
| 512 | SZA CLA\r |
| 513 | JMP PENUD / A PEN OP (PDP-12 OR 8/E)\r |
| 514 | TAD QTEMP5 / ITS AN 8E\r |
| 515 | 6506 / SEND A CHARR\r |
| 516 | CLA\r |
| 517 | JMP OUTCHK / RETURN\r |
| 518 | PENUD, TAD QTEMP5 / ITS A 12 OR NON-8/E PEN UP OR DOWN\r |
| 519 | SMA CLA\r |
| 520 | JMP TWOWD / IT'S A TWO WORD IOT\r |
| 521 | QTEMP5, NOP / 1-WORDER SO DO IT NOW\r |
| 522 | OUTCHK, TAD INTFLG\r |
| 523 | SNA CLA\r |
| 524 | JMP% PLDBL / DONE FOR NON-INTERRUPT\r |
| 525 | DCA INTFLG / INT MODE, CLEAR FLAG\r |
| 526 | CDF CIF\r |
| 527 | JMP% XDISMS+1\r |
| 528 | XDISMS, ADDR #DISMS\r |
| 529 | A7000, 7000\r |
| 530 | TWOWD, 6514 / DRUM DOWN\r |
| 531 | 6521 / SECOND PART PEN #XLEFT\r |
| 532 | JMP OUTCHK\r |
| 533 | \fINTPLT, 0 / HERE ONLY IF FLAG SET\r |
| 534 | CLA CMA\r |
| 535 | TAD BUFCNT / DECREMENT BUFFER COUNTER\r |
| 536 | SPA\r |
| 537 | JMP EMPTY\r |
| 538 | DCA BUFCNT\r |
| 539 | ISZ INTFLG / SHOULD NEVER SKIP\r |
| 540 | NOP\r |
| 541 | JMP OUTSUB\r |
| 542 | EMPTY, CLA CMA\r |
| 543 | DCA BUFCNT / INITIALIZE BUFFER CNT-1\r |
| 544 | 6502 / CLEAR\r |
| 545 | JMP% INTPLT / EXIT IN FIELD 1\r |
| 546 | / BE SHURE BUFFER EMPTY BEFORE EXITING\r |
| 547 | #XDNCK, 0\r |
| 548 | CLA\r |
| 549 | JMS PLDBL / DO A FINAL PEN UP\r |
| 550 | WAIT, TAD BUFCNT\r |
| 551 | SMA CLA\r |
| 552 | JMP WAIT / STILL MORE TO DO\r |
| 553 | TAD #XCHTP\r |
| 554 | SNA CLA\r |
| 555 | 6500 / CLEAR INTERRUPT ENABLE FOR 8-ES \r |
| 556 | CIF CDF / ALL EMPTY\r |
| 557 | JMP% #XDNCK\r |
| 558 | END\r |
| 559 | \f\1a\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0 |