| 1 | / \ eXYPLOT.RA\r |
| 2 | /\r |
| 3 | / PART TWO 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 | / PLOTS,XYPLOT,FACTOR,WHERE,SYMBOL,SYMB(FOR NUMBER ONLY)\r |
| 7 | /\r |
| 8 | /\r |
| 9 | / PLOTTER ROUTINES FOR PDP 8\r |
| 10 | /\r |
| 11 | / VER 1.0 1.NOV. 1980 H.A.\r |
| 12 | / VER 2.0 12.NOV 1980 H.A.\r |
| 13 | / VER 2.1 20.NOV 1980 H.A. CORRECTS BUG IN SYMBOL CONCERNING #XFCTX,#XFCTY\r |
| 14 | / VER 3.0 27.NOV 1980 H.A. INSERTS SYMBOL (999.,999.,....)\r |
| 15 | / VER 3.1 27.NOV.1980 H.A. CORRECTS PEN UP/DOWN TIMING ERROR\r |
| 16 | / VER 3.2 18.JAN.1981 H.A. CORRECTS WHERE AND OVERLAY PROBLEMS\r |
| 17 | / VER 3.3 4.AUG.1982 H.A. REDUCES NUMBER OF EXTERNAL REFERENCES\r |
| 18 | /\r |
| 19 | / UPDATES:\r |
| 20 | / 1. PLEXIT LOCKED OUT THE PLOTTER.\r |
| 21 | / 2. PLOTS DIDN'T DROVE PLOTTER TO THE ORIGIN\r |
| 22 | / * #XONCE IS REMOVED, SO #XNTST IS CALLED FROM PLOTS ALL TIMES\r |
| 23 | / 1-NOV-80 H.A.\r |
| 24 | / 3. FACTOR DID NOT WORK CORRECT ALL THE TIMES.\r |
| 25 | / FACTOR(1),XYPLOT(1,1),FACTOR(2),XYPLOT(1,1) DID NOT WORK\r |
| 26 | / 4. TRUNCATION ERROR IN XYPLOT CAUSED ROUNDING PROBLEMS:\r |
| 27 | / XSTEPS=INT(INT(X/#XINCR)*FACTOR)\r |
| 28 | / * FACTOR NOW WORKS CORRECT IN ANY CASE\r |
| 29 | / * FACTOR NOW HAS AN OPTIONAL SECOND PARAMETER. IF BOTH PRESENT\r |
| 30 | / * THEY SPECIFY THE X-FACTOR AND THE Y-FACTOR.\r |
| 31 | / * A NEGATIVE FACTOR IS NO MORE VALID YET. (ERROR WALKBACK)\r |
| 32 | / * ZERO FACTOR DISABLES PLOTTING.\r |
| 33 | / * XYPLOT NOW COMPUTES XSTEPS=INT(X/#XINCR*FACTOR)\r |
| 34 | / * WHERE HAS GOT AN OPTIONAL FOURTH PARAMETER FOR THE Y-FACTOR.\r |
| 35 | / * IF X AND Y FACTOR DO NOT MATCH AND THERE ARE ONLY THREE PARAMETERS\r |
| 36 | / * AN ERROR WALKBACK IS TAKEN.\r |
| 37 | / 7-NOV-80 H.A.\r |
| 38 | / 5. SYMBOL CALLS #XMBTB TO LOAD THE SYMBOL TABLE\r |
| 39 | / 12-NOV-80 H.A.\r |
| 40 | / 6. CALLING SYMBOL/NUMBER WITH X/Y EQUAL TO 999. WILL REPLACE THE\r |
| 41 | / 999. WITH THE ACTUAL POSITION OF THE PEN. VERY USEFULL IF YOU\r |
| 42 | / ARE EDITING AN OUTPUT LINE USEING SOME CALLS TO SYMBOL & NUMBER.\r |
| 43 | / IF YOU CALL FACTOR PRIOR TO SYMBOL(999.,....) THEN THE POSITION\r |
| 44 | / OF THE PEN IS NEVER CHANGED PRIOR PLOTTING THE SYMBOL. BUT THE\r |
| 45 | / FACTOR IS USED WHEN PLOTTING THE SYMBOL.\r |
| 46 | / 27-NOV-80 H.A.\r |
| 47 | / 7. EACH TIME XYPLOT WAS CALLED IT ISSUED A PEN UP/DOWN COMMAND.\r |
| 48 | / THIS CAUSED A STEP BY STEP MOVING OF THE PEN ALTHOUGH THE\r |
| 49 | / DIRECTION WAS NOT CHANGED. INTERFACE PROBLEM.\r |
| 50 | / NOW WE ISSUE THE PEN MOVE COMMAND ONLY WHEN WE WANT TO CHANGE\r |
| 51 | / THE DIRECTION OF THE PEN. THIS SPEEDS UP THE PLOTTER!\r |
| 52 | / * NOT VALID PEN VALUES (NOT -3 TO 3) CAUSE #ARGERR WITH X0 =1\r |
| 53 | / 27-NOV-80 H.A. A HARD DAY'S NIGHT.... AND MIDNIGHT TOO!\r |
| 54 | / 8. REMOVES BUG IN WHERE ROUTINE\r |
| 55 | / 9. TOO LARGE DELTA X (DELETA Y) CAUSE #ARGER WITH X0=2 (3)\r |
| 56 | / 18-JAN-81 H.A.\r |
| 57 | /\r |
| 58 | \f/\r |
| 59 | / FPP CODE PART CONTAINING PLOTS,PLOT,PLEXIT,WHERE,FACTOR\r |
| 60 | / THIS PROGRAM MAY BE PLACED INTO AN OVERLAY.\r |
| 61 | / IT REFERENCES THE PROGRAM PDPPLT LOCATED IN FIELD 1.\r |
| 62 | /\r |
| 63 | SECT #XYPLT\r |
| 64 | /\r |
| 65 | / REFERENCES INTO FRTS (FIELD 0)\r |
| 66 | /\r |
| 67 | EXTERN #ARGER / WRONG NUMBER OF PARAMETERS\r |
| 68 | EXTERN #REW\r |
| 69 | EXTERN #WRITO\r |
| 70 | EXTERN #RSVO\r |
| 71 | EXTERN #RENDO\r |
| 72 | /\r |
| 73 | / REFERENCES INTO FIELD 1 (PDPPLT)\r |
| 74 | /\r |
| 75 | EXTERN #XETXR\r |
| 76 | EXTERN #XETUP\r |
| 77 | EXTERN #XDPXR\r |
| 78 | EXTERN #XATIO\r |
| 79 | EXTERN #XNPLT\r |
| 80 | EXTERN #XCHTP\r |
| 81 | EXTERN #XCHCK\r |
| 82 | EXTERN #XNTST\r |
| 83 | EXTERN #XDNCK\r |
| 84 | EXTERN #XORGX / LAST ABSOLUTE ORIGIN IN PLOTTER STEPS X (REAL)\r |
| 85 | #XORGY= #XORGX+3\r |
| 86 | #XABSX= #XORGY+3 / ACTUAL ABSOLUTE X POSITION IN STEPS (REAL)\r |
| 87 | #XABSY= #XABSX+3\r |
| 88 | #XOLDP= #XABSY+3 / OLD PEN STATUS\r |
| 89 | #XXOLD= #XOLDP+3 / OLD XPT WITH EFFECT OF FACTOR\r |
| 90 | #XYOLD= #XXOLD+3 / OLD YPT WITH EFFECT OF FACTOR\r |
| 91 | #XPENC= #XYOLD+3 / OLD PEN STATUS ( USED BY SYMBOL, NUMBER)\r |
| 92 | #XINCX= #XPENC+3 / INCREMENT SIZE FOR X STEP MOTOR OF PLOTTER\r |
| 93 | #XINCY= #XINCX+3 / INCREMENT SIZE FOR Y STEP MOTOR OF PLOTTER\r |
| 94 | #XFCTX= #XINCY+3 / X - FACTOR\r |
| 95 | #XFCTY= #XFCTX+3 / Y - FACTOR\r |
| 96 | /\r |
| 97 | / HERES THE INITIALIZATION ROUTINE \r |
| 98 | / STANDARD CALLING SEQUENCE, SHARED BY ALL SUBROUTINES\r |
| 99 | /\r |
| 100 | XRPLOT, 0 / MULTI PURPOSE XRS\r |
| 101 | X0= 0 / AT #ARGER X0 HOLDS THE XYPLOT ERROR NUMBER\r |
| 102 | X1= 1\r |
| 103 | XR1, 0\r |
| 104 | XR2, 0\r |
| 105 | XR3, 0\r |
| 106 | XR4, 0\r |
| 107 | XR5, 0\r |
| 108 | XR6, 0 / NOT USED\r |
| 109 | X7= 7\r |
| 110 | XR7, 0 / NUMBER OF PARAMETERS AT SUBROUTINE CALL\r |
| 111 | WBW, TEXT #XYPLOT# / WALK BACK WORD\r |
| 112 | PLOTXR, SETX XRPLOT\r |
| 113 | SETB BPPLOT\r |
| 114 | BPPLOT, FNOP\r |
| 115 | 0\r |
| 116 | 0\r |
| 117 | TERM2, F 0.\r |
| 118 | YPT, F 0. / VALUE ACTUALLY PLOTTED WITH EFFECT OF FACTOR\r |
| 119 | XPT, F 0. / X VALUE ACTUALLY PLOTTED WITH EFFECT OF FACTOR\r |
| 120 | TERM1, F 0.\r |
| 121 | ARG1, F 0.\r |
| 122 | ARG2,\r |
| 123 | YDIFF, F 0. / PEN VALUE\r |
| 124 | ORG 10*3+BPPLOT\r |
| 125 | FNOP\r |
| 126 | JA PLOTXR\r |
| 127 | ORG .+1 / TO MAKE A 3 WORD BASE ENTRY FOR PLTRTN\r |
| 128 | PLTRTN, JA .\r |
| 129 | MAJOR, F 0. / HORIZONTAL AXIS MOVE\r |
| 130 | MINOR, F 0. / DIAGONAL AXIS MOVE\r |
| 131 | XACT, F 0.\r |
| 132 | YACT, F 0. / HOLDS X,Y VALUES TYPED IN\r |
| 133 | XDIFF, F 0 / DELTA X\r |
| 134 | P1, F 1.\r |
| 135 | PF2, F 2.\r |
| 136 | P3, F 3.\r |
| 137 | P4, F 4.\r |
| 138 | PF7, F 7.\r |
| 139 | PT5, F .5\r |
| 140 | PORS, F 0. / =1 IF ENTERED FROM SYMBOL ROUTINE\r |
| 141 | XCHRPT, F 0. / X,Y VALUES FROM PDP TABLES\r |
| 142 | YCHRPT, F 0.\r |
| 143 | NUMENT, F 0. / INDICATES ENTRY FROM NUMBER SUBROUTINE\r |
| 144 | COSANG, F 0.\r |
| 145 | SINANG, F 0.\r |
| 146 | DEGRAD, F 0.017453293 / RADIANS TO DEGREES\r |
| 147 | F999, F 999.\r |
| 148 | F100, F 100.\r |
| 149 | XREAL, F 0. / FOR ORIGIN AND WHERE RTN\r |
| 150 | YREAL, F 0.\r |
| 151 | CENTSY, F 0. / CENTERED SYMBOL INDICATOR\r |
| 152 | NUMSYM, F 0. / NO. OF CHARACTERS TO PLOT\r |
| 153 | ANGADJ, F 0.\r |
| 154 | P22, F 18. / 22 OCTAL=18 DECIMAL\r |
| 155 | TWO, 0;2;0 / CONSTANT\r |
| 156 | F4095, F 4095. / LARGEST NUMBER FITTING INTO 12 BITS PDP 8 WORD\r |
| 157 | /\r |
| 158 | / - - - - - - - - - - - - -\r |
| 159 | \f 0\r |
| 160 | SYMSTR, JA . / SYMBOL ENTRY\r |
| 161 | JA SYMST / NEEDED TO PICK UP 2 WORD ADDRESSES\r |
| 162 | 0\r |
| 163 | BASE 0\r |
| 164 | /\r |
| 165 | / SET UP THE BASE PAGE AND INDEX REGISTERS FOR THE PLOT ROUTINES\r |
| 166 | / PLOTS,XYPLOT,WHERE,FACTOR AND SYMBOL\r |
| 167 | /\r |
| 168 | /\r |
| 169 | PLTSTR, JA . / SAVE TWO WORDS FOR RETURN\r |
| 170 | STARTD\r |
| 171 | FLDA 3*10 / SAVE CALLERS RETURN ARGUMENT LIST\r |
| 172 | FSTA PLTRTN\r |
| 173 | FLDA% 0 / COMPUTE THE NUMBER OF PARAMETERS\r |
| 174 | FSUB 0\r |
| 175 | FSUB# TWO\r |
| 176 | SETX XRPLOT\r |
| 177 | LDX 1,1 / DIVIDE BY TWO\r |
| 178 | ALN 1\r |
| 179 | FNEG / MAKE COUNTER \r |
| 180 | ATX X7 / AND BUMP INTO X7 \r |
| 181 | FLDA 0 / POINTER TO THE PARAMETER LIST --> FAC\r |
| 182 | SETB BPPLOT\r |
| 183 | BASE BPPLOT\r |
| 184 | FSTA ARG1 / POINTER TO PARAMETER LIST --> ARG1\r |
| 185 | JA PLTSTR / 1 --> X1, INDEX TO PARAMETER LIST\r |
| 186 | \f/\r |
| 187 | / XYPLOT SUBROUTINE\r |
| 188 | / CALL XYPLOT (XPT,YPT,PENCMD)\r |
| 189 | /\r |
| 190 | / REAL XPT,YPT AND MUST BE POSSIBLE TO FIX INTO 24 BIT NUMBER\r |
| 191 | / INTEGER PENCMD (-3,-2,2,3 AND NOTHING ELSE)\r |
| 192 | /\r |
| 193 | / ARGERR ERRORS:\r |
| 194 | / 1 BAD PENCMD\r |
| 195 | / 2 DELTA X EXCEEDS 4095\r |
| 196 | / 3 DELTA Y EXCEEDS 4095\r |
| 197 | / 4 XPT UNNORMALIZED OR TO LARGE ( FOR 24 BIT FRACTIONAL)\r |
| 198 | / 5 YPT "" "" "\r |
| 199 | /\r |
| 200 | /\r |
| 201 | ENTRY XYPLOT\r |
| 202 | WB0, TEXT 'XYPLOT' / INSERT THE CORRECT WALK BACK WORD\r |
| 203 | XYPLOT,\r |
| 204 | FLDA# WB0 / INSERT THE CORRECT WALK BACK WORD\r |
| 205 | FSTA WBW / IN FRONT OF THE BASE PAGE\r |
| 206 | JSA PLTSTR / SET UP THE BASE PAGE AND X REGISTERS\r |
| 207 | SYMENT, FLDA% ARG1,1\r |
| 208 | FSTA XPT\r |
| 209 | FLDA% ARG1,1+\r |
| 210 | FSTA YPT\r |
| 211 | FLDA% ARG1,1+\r |
| 212 | FSTA YDIFF / VALUE OF PEN\r |
| 213 | STARTF\r |
| 214 | FLDA% XPT / X POINT\r |
| 215 | FDIV #XINCX / ALL INTERNAL CALCULATIONS DONE IN TERMS OF\r |
| 216 | / PLOTTING INTERVALS, HENCE INTEGERS SO\r |
| 217 | FMUL #XFCTX\r |
| 218 | / SAVE STEPS DONE\r |
| 219 | FSTA XACT / TEMP SAVE OF FAC\r |
| 220 | FADD #XORGX / REMEMBER THE X OFFSET\r |
| 221 | FSTA #XABSX / ABSOLUTE NUMBER OF STEPS IN REAL\r |
| 222 | FLDA XACT / RESTORE FAC\r |
| 223 | /\r |
| 224 | JAL XPTERR / IF IT IS IMPOSSIBLE TO FIX XPT THEN ERROR OFF\r |
| 225 | JA XPTOK\r |
| 226 | XPTERR, LDX 4,X0 / WITH #ARGER 4\r |
| 227 | TRAP4 #ARGER\r |
| 228 | XPTOK,\r |
| 229 | JSA MAKINT / INTERGERIZE IT\r |
| 230 | FSTA XACT / WITH FACTOR\r |
| 231 | FSTA XPT / WITH EFFECT OF FACTOR\r |
| 232 | FLDA% YPT\r |
| 233 | FDIV #XINCY\r |
| 234 | FMUL #XFCTY\r |
| 235 | FSTA YACT\r |
| 236 | FADD #XORGY / ADD THE ORIGIN Y\r |
| 237 | FSTA #XABSY / HERE WE STORE THE ABSOLUTE NUMBER OF STEPS DONE\r |
| 238 | FLDA YACT / RESTORE FAC\r |
| 239 | /\r |
| 240 | JAL YPTERR / IF IT IS IMPOSSIBLE TO FIX YPT THEN WE ERROR OFF\r |
| 241 | JA YPTOK\r |
| 242 | YPTERR, LDX 5,X0 / WITH #ARGERR 5\r |
| 243 | TRAP4 #ARGER\r |
| 244 | YPTOK,\r |
| 245 | JSA MAKINT / INTERGERIZE IT\r |
| 246 | FSTA YACT\r |
| 247 | FSTA YPT / WITH EFFECT OF FACTOR\r |
| 248 | FLDA% YDIFF / 2=DOWN, 3=UP, NEG=NEW ORG\r |
| 249 | FSTA #XPENC\r |
| 250 | JGE MORPEN\r |
| 251 | FNEG\r |
| 252 | MORPEN, JSA MAKINT\r |
| 253 | SETX #XETXR\r |
| 254 | ATX 0 / ABS VALUE PEN\r |
| 255 | XTA 0 / FOR THE FPP SIMULATOR\r |
| 256 | SETX XRPLOT\r |
| 257 | FSTA YDIFF / SAVE NEW STATUS OF PEN \r |
| 258 | FSUB P3 / PASS ONLY 0-3\r |
| 259 | JLE ALEGAL / GOOD BOY\r |
| 260 | LDX 1,0 / BAD PEN CMD CAUSES XYPLOT ERROR 1\r |
| 261 | TRAP4 #ARGERR / FUCK OFF\r |
| 262 | ALEGAL,\r |
| 263 | FLDA YDIFF / RESTORE THE NEW VALUE OF PEN\r |
| 264 | FSUB #XOLDP / COMPARE WITH THE OLD VALUE\r |
| 265 | JEQ NOCHNG / IF THEY MATCH THEN GOTO NOCHANGE\r |
| 266 | TRAP4 #XETUP / ELSE SET UP THE NEW PEN\r |
| 267 | NOCHNG,\r |
| 268 | FLDA YDIFF / SAVE THE NEW PEN STATUS FOR THE NEXT CALL\r |
| 269 | FSTA #XOLDP\r |
| 270 | JA REALPT\r |
| 271 | /\r |
| 272 | /\r |
| 273 | MAKINT, JA . / FOR ALL THOSE INTEGERIZATIONS REQUIRED\r |
| 274 | FADD PT5 / ROUND THE VALUE\r |
| 275 | ALN 0 / GET RID OF FRACTIONAL PART\r |
| 276 | FNORM / NORMALIZE IT FOR OTHER FPP OPE#XATIONS\r |
| 277 | JA MAKINT\r |
| 278 | \f/ HERES THE CALCULATING PART OF THE PLOT ROUTINES\r |
| 279 | PRERL1, FCLA\r |
| 280 | PREREL, JA . / RTN USED AS SUBROUTINE\r |
| 281 | REALPT, FLDA XPT / AND JA'D TO\r |
| 282 | FSUB #XXOLD / COMPARE NEW X AND OLD\r |
| 283 | FSTA XDIFF\r |
| 284 | JGE ABSDX\r |
| 285 | FNEG\r |
| 286 | ABSDX, FSTA TERM1 / ABS DELTA X\r |
| 287 | /\r |
| 288 | FSUB F4095 / IF THE DELTA X DOESN NOT FIT INTO\r |
| 289 | JLE DXOK / A 12 BIT PDP 8 WORD THEN TAKE ERROR 2 \r |
| 290 | LDX 2,0 / ELSE CONTINUE FI\r |
| 291 | TRAP4 #ARGER / HOME TO CCL\r |
| 292 | DXOK, /\r |
| 293 | /\r |
| 294 | FLDA YPT\r |
| 295 | FSUB #XYOLD / SAME FOR Y PNTS\r |
| 296 | FSTA YDIFF\r |
| 297 | JLE DELXY\r |
| 298 | FNEG\r |
| 299 | DELXY, FADDM TERM1 / DX-DY\r |
| 300 | /\r |
| 301 | FNEG / ABS DELTA Y --> FAC\r |
| 302 | FSUB F4095 / IF DELTA Y DOESN'T FIT INTO 12 BITS THEN \r |
| 303 | JLE DYOK / WE ERROR OFF ELSE CONTINUE FI\r |
| 304 | LDX 3,0 / THIS IS ERROR 3\r |
| 305 | TRAP4 #ARGER\r |
| 306 | DYOK,/\r |
| 307 | TRAP3 #WRITO\r |
| 308 | JA UNIX80\r |
| 309 | JA FORM1\r |
| 310 | FLDA #XOLDP / GET ACTUAL PEN STATUS\r |
| 311 | FSUB P3\r |
| 312 | JLT DP0\r |
| 313 | FLDA# SDP / PEN 2 ( PEN UP)\r |
| 314 | JA DP1\r |
| 315 | SDP, TEXT 'P'\r |
| 316 | SDK, TEXT 'K'\r |
| 317 | DP0, \r |
| 318 | FLDA# SDK\r |
| 319 | DP1, TRAP3 #RSVO\r |
| 320 | JA DP4711\r |
| 321 | FLDA #XPENC\r |
| 322 | TRAP3 #RSVO\r |
| 323 | FLDA #XORGX\r |
| 324 | TRAP3 #RSVO\r |
| 325 | FLDA #XFCTX\r |
| 326 | TRAP3 #RSVO\r |
| 327 | FLDA #XINCX\r |
| 328 | TRAP3 #RSVO\r |
| 329 | FLDA XACT\r |
| 330 | TRAP3 #RSVO\r |
| 331 | FLDA #XORGY\r |
| 332 | TRAP3 #RSVO\r |
| 333 | FLDA #XFCTY\r |
| 334 | TRAP3 #RSVO\r |
| 335 | FLDA #XINCY\r |
| 336 | TRAP3 #RSVO\r |
| 337 | FLDA YACT\r |
| 338 | TRAP3 #RSVO\r |
| 339 | DP4711,/\r |
| 340 | FLDA #XABSY / ABSOLUTE NUMBER OF STEPS\r |
| 341 | TRAP3 #RSVO\r |
| 342 | FLDA #XABSX\r |
| 343 | FNEG\r |
| 344 | TRAP3 #RSVO\r |
| 345 | TRAP3 #RENDO\r |
| 346 | JA NX1\r |
| 347 | /FORM1, TEXT #(1X,A1,A6,2(I7,2F9.3,I8),2I6)#\r |
| 348 | FORM1, TEXT #(1X,A1,2I6)#\r |
| 349 | NX1,\r |
| 350 | /\r |
| 351 | FLDA TERM1 / DETERMINE OCTANT + MAJOR AXIS\r |
| 352 | JGT XMAJ\r |
| 353 | FLDA YDIFF / Y AXIS IS MAJOR\r |
| 354 | FSTA MAJOR\r |
| 355 | FLDA XDIFF\r |
| 356 | FSTA MINOR\r |
| 357 | JA KNOWOC\r |
| 358 | XMAJ, FLDA XDIFF / X AXIS MAJOR\r |
| 359 | FSTA MAJOR\r |
| 360 | FLDA YDIFF\r |
| 361 | FSTA MINOR\r |
| 362 | KNOWOC, LDX 2,1 / 2*OCTANT VALUE COLLECTED IN XR1\r |
| 363 | / USES A SPECIAL (NON SEQUENTIAL) ORDERING\r |
| 364 | FLDA XDIFF\r |
| 365 | JLE .+4\r |
| 366 | ADDX 10,1\r |
| 367 | FLDA YDIFF\r |
| 368 | JLE .+4\r |
| 369 | ADDX 4,1\r |
| 370 | FLDA TERM1\r |
| 371 | JLE .+4\r |
| 372 | ADDX 2,1 / KEEP IT IN XR1\r |
| 373 | LDX 0,2\r |
| 374 | FLDA MAJOR / GET MAJOR MOVE\r |
| 375 | JGT POSMAJ / NEED AS ABS. VALUE\r |
| 376 | JEQ NOTHIN / IF NO MAJOR MOVES, THEN NO MOVES\r |
| 377 | FNEG\r |
| 378 | FSTA MAJOR / NO ABS. VALUE\r |
| 379 | POSMAJ, JSA MAKINT\r |
| 380 | SETX #XDPXR\r |
| 381 | ATX 1 / PASS THIS TO PDP CODE\r |
| 382 | SETX XRPLOT\r |
| 383 | / USE 2 WORD #XATIO IN PDP CODE TO DET SEQ OF MOVES\r |
| 384 | FLDA MINOR\r |
| 385 | JGT POSMIN / ABS VALUE\r |
| 386 | JEQ ZROCAS\r |
| 387 | FNEG\r |
| 388 | POSMIN, FDIV MAJOR / FORM #XATIO OF MINOR TO MAJOR MOVES\r |
| 389 | ALN 2\r |
| 390 | ZROCAS, FSTA #XATIO / DOWN TO PDP CODE\r |
| 391 | XTA 1\r |
| 392 | SETX #XDPXR / GET 2*OCTATNT\r |
| 393 | ATX 0\r |
| 394 | SETX XRPLOT\r |
| 395 | / TRAP4 #XNPLT/ CXCX\r |
| 396 | \fNOTHIN, FLDA PORS\r |
| 397 | JEQ REGPLT / 0 MEANS WAS FROM XYPLOT\r |
| 398 | JLT SYMSET / WAS A MOVE IN SYMBOL\r |
| 399 | FCLA / IS FIRST MOVE IN SYMBOL (0 ORG)\r |
| 400 | FSTA #XXOLD\r |
| 401 | FSTA #XYOLD\r |
| 402 | FSTA PORS\r |
| 403 | JA SYMSTR\r |
| 404 | REGPLT, FLDA #XPENC\r |
| 405 | JLT ZEROLD / NEQ MEANS ZERO THE ORG\r |
| 406 | / SET X AND Y FOR NEXT MOVE TO START AT END OF THIS MOVE\r |
| 407 | FLDA XACT\r |
| 408 | FSTA #XXOLD\r |
| 409 | FLDA YACT\r |
| 410 | FSTA #XYOLD\r |
| 411 | JA PLTRTN\r |
| 412 | SYMSET, FLDA XPT / CONT FROM CURRENT POINT\r |
| 413 | FSTA #XXOLD\r |
| 414 | FLDA YPT\r |
| 415 | FSTA #XYOLD\r |
| 416 | JA PRERL1\r |
| 417 | /\r |
| 418 | / NEGATIVE PEN STATUS, SO WE ZERO THE ORIGIN\r |
| 419 | /\r |
| 420 | ZEROLD,\r |
| 421 | FLDA #XABSX / SAVE THE ACTUAL PEN POSITION (MOTOR STEPS)\r |
| 422 | FSTA #XORGX \r |
| 423 | FLDA #XABSY\r |
| 424 | FSTA #XORGY\r |
| 425 | FCLA\r |
| 426 | FSTA #XXOLD\r |
| 427 | FSTA #XYOLD\r |
| 428 | JA PLTRTN\r |
| 429 | ENTRY SYMSTR\r |
| 430 | SYMST,\r |
| 431 | FLDA P1 / ENTERED WITH 36 BIT MODE TURNED ON\r |
| 432 | FSTA PORS / SET THE FROM SYMBOL FLAG\r |
| 433 | STARTD / USED BY SYMBOL FOR ORIGIN PLOT\r |
| 434 | FLDA SYMSTR / GET START OF ARG CHAIN\r |
| 435 | FSTA ARG1\r |
| 436 | LDX 1,1\r |
| 437 | JA SYMENT\r |
| 438 | \f ENTRY WHERE / WITHOUT EFFECT OF FACTOR\r |
| 439 | WB1, TEXT 'WHERE ' / THE WALK BACK WORD\r |
| 440 | WHERE,\r |
| 441 | FLDA# WB1\r |
| 442 | FSTA WBW\r |
| 443 | JSA PLTSTR\r |
| 444 | JXN WH0,7 / NO PARAMETERS AT ALL THEN \r |
| 445 | TRAP4 #ARGER / ABORT THE USER PROGRAM\r |
| 446 | / WARNING: WHERE RETURNS A WRONG RESULT IF YOU CALL FACTOR PRIOR \r |
| 447 | / TO THE WHERE ROUTINE WITHOUT PLOTTING WITH XYPLOT.\r |
| 448 | WH0,\r |
| 449 | FLDA% ARG1,1\r |
| 450 | FSTA TERM1 / ADDRESS OF X (FIRST PARAMETER)\r |
| 451 | FLDA% ARG1,1+\r |
| 452 | FSTA YDIFF / SAVE ADDRESS OF Y (SECOND PARAMETER)\r |
| 453 | STARTF\r |
| 454 | FLDA #XXOLD\r |
| 455 | FMUL #XINCX\r |
| 456 | FDIV #XFCTX / WHERE RETURNS X WITHOUT EFFECT OF FACTOR\r |
| 457 | FSTA% TERM1\r |
| 458 | JXN WH1,7+ / IF ONLY ONE PARAMETER, THEN ABORT USER\r |
| 459 | TRAP4 #ARGER\r |
| 460 | WH1,\r |
| 461 | FLDA #XYOLD\r |
| 462 | FMUL #XINCY\r |
| 463 | FDIV #XFCTY / RETURNED WITHOUT EFFECT OF FACTOR\r |
| 464 | FSTA% YDIFF / SEND BACK THE VALUES\r |
| 465 | JXN WH2,7+ / IF ONLY TWO PARAMETERS, THEN ABORT USER\r |
| 466 | TRAP4 #ARGER\r |
| 467 | WH2,\r |
| 468 | STARTD\r |
| 469 | FLDA% ARG1,1+\r |
| 470 | FSTA ARG2 / ADR. OF X -FACTOR (THIRD PARAMETER)\r |
| 471 | FLDA% ARG1,1+\r |
| 472 | FSTA ARG1 / ADR. OF Y -FACTOR (FOURTH PARAMETER) --> ARG1\r |
| 473 | STARTF\r |
| 474 | FLDA #XFCTX / IF THE X AND Y FACTOR MATCH THEN\r |
| 475 | FSUB #XFCTY\r |
| 476 | JNE WHXYF / WE NEED THREE PARAMETERS ONLY, ELSE WE GO WHXYF\r |
| 477 | FLDA #XFCTX\r |
| 478 | FSTA% ARG2\r |
| 479 | JXN PLTRTN,X7+ / IF THERE ARE ONLY THREE PARAMETERS THEN RETURN\r |
| 480 | FSTA% ARG1 / ELSE INSERT FACTOR INTO FOURTH PARAMETER AND\r |
| 481 | JA PLTRTN / RETURN\r |
| 482 | WHXYF, / WE REQUIRE X AND Y FACTOR PARAMETERS\r |
| 483 | FLDA #XFCTX\r |
| 484 | FSTA% ARG2 / INSERT THE X FACTOR INTO THE OUTPUT\r |
| 485 | JXN WH3,X7+\r |
| 486 | TRAP4 #ARGER / SORRY, BUT THERE ARE NOT ENOUGH ARGUMENTS\r |
| 487 | WH3,\r |
| 488 | FLDA #XFCTY\r |
| 489 | FSTA% ARG1\r |
| 490 | JA PLTRTN\r |
| 491 | ENTRY FACTOR / RESET FACTOR VALUE\r |
| 492 | WB2, TEXT 'FACTOR'\r |
| 493 | FACTOR,\r |
| 494 | FLDA# WB2\r |
| 495 | FSTA WBW\r |
| 496 | JSA PLTSTR\r |
| 497 | JXN FA0,7 / IF THERE ARE NO PARAMETERS AT ALL THEN\r |
| 498 | TRAP4 #ARGER / ABORT USER PROGRAM\r |
| 499 | FA0,\r |
| 500 | FLDA% ARG1,1\r |
| 501 | FSTA ARG2\r |
| 502 | STARTF\r |
| 503 | FLDA% ARG2\r |
| 504 | JGE FA1 / IF NEGATIVE FACTOR THEN \r |
| 505 | TRAP4 #ARGER / ABORT USER PROGRAM ELSE\r |
| 506 | FA1,\r |
| 507 | FSTA #XFCTX / STORE X AND Y FACTOR\r |
| 508 | FSTA #XFCTY / ONE PARAMETER MEANS X&Y GET THE SAME FACTOR\r |
| 509 | JXN FA3,7+\r |
| 510 | JA FACRTN\r |
| 511 | FA3,\r |
| 512 | STARTD / TWO PARAMETERS, GET THE Y FACTOR\r |
| 513 | FLDA% ARG1,1+\r |
| 514 | FSTA ARG2\r |
| 515 | STARTF\r |
| 516 | FLDA% ARG2\r |
| 517 | JGE FA2 / IF NEGATIVE FACTOR THEN \r |
| 518 | TRAP4 #ARGER / ABORT USER PROGRAM\r |
| 519 | FA2,\r |
| 520 | FSTA #XFCTY\r |
| 521 | FACRTN,\r |
| 522 | STARTF\r |
| 523 | JA PLTRTN\r |
| 524 | \f/ MUST DO A PLOTS AS FIRST ROUTINE IN ANY PLOTTING SEQUENCE\r |
| 525 | / USER SPECIFIES INCREMENT AND MACHINE TYPE (0=8/E, 1=12,8/I,8/L)\r |
| 526 | ENTRY PLOTS\r |
| 527 | WB3, TEXT 'PLOTS '\r |
| 528 | /\r |
| 529 | / CONSTANTS USED IN PLOTS\r |
| 530 | /\r |
| 531 | INXYPL, F 0.0095 / INCREMENT SIZE XY PLOTTER\r |
| 532 | INX80Y, F 0.02648 / INCREMENT SIZE X80-SP X DIRECTION (96 CHAR. LINE)\r |
| 533 | INX80X, F 0.03968 / INCREMENT SIZE X80-SP Y DIRECTION (6 STEPS PER LINE)\r |
| 534 | FORM2, TEXT "(' [STP 6'/' MC1'/' P 0 0')"\r |
| 535 | FORM3, TEXT "(' STP 8]')"\r |
| 536 | UNIX80, F 2.\r |
| 537 | /\r |
| 538 | /\r |
| 539 | PLOTS, / CALL PLOTS (PLOTTER TYPE, MACHINE TYPE)\r |
| 540 | /\r |
| 541 | / INTEGER PLOTTER TYPE: 1 XY PLOTTER\r |
| 542 | / 2 X80-SP PRINTER PLOTTER\r |
| 543 | / 3 BOTH (DOESN'T WORK TODAY)\r |
| 544 | / INTEGER MACHINE TYPE: 0 PDP 8/E\r |
| 545 | / 1 OTHER PDP 8 OR 12\r |
| 546 | /\r |
| 547 | \r |
| 548 | FLDA# WB3\r |
| 549 | FSTA WBW\r |
| 550 | JSA PLTSTR\r |
| 551 | FLDA% ARG1,1\r |
| 552 | FSTA XPT\r |
| 553 | FLDA% ARG1,1+\r |
| 554 | FSTA ARG1\r |
| 555 | STARTF / THIS ROUTINE SETS UP A LOT OF CONSTANTS\r |
| 556 | FLDA% XPT / LOAD FIRST ARGUMENT (PLOTTER TYPE ) --> FAC\r |
| 557 | / JLE PLTSER / WRONG INPUT PARAMETER, ERROR OFF\r |
| 558 | FSUB P1\r |
| 559 | JGT PLS1\r |
| 560 | FLDA INXYPL / XY PLOTTER INCREMENT\r |
| 561 | FSTA #XINCX\r |
| 562 | FSTA #XINCY\r |
| 563 | JA MACHIN\r |
| 564 | PLS1, FSUB P1\r |
| 565 | / JGT PLS2 / BOTH PLOTTER TYPES\r |
| 566 | FLDA INX80X\r |
| 567 | FSTA #XINCX / X80 SP PRINTER PLOTTER\r |
| 568 | FLDA INX80Y\r |
| 569 | FSTA #XINCY\r |
| 570 | TRAP3 #WRITO\r |
| 571 | JA UNIX80\r |
| 572 | JA FORM2 / ' [STP6'/' MC1'/' P 0 0'\r |
| 573 | TRAP3 #RENDO\r |
| 574 | MACHIN,\r |
| 575 | FLDA% ARG1\r |
| 576 | JEQ EIGHTE\r |
| 577 | FLDA P22 / SET MATCHTP TO 22 IF NON-8/E\r |
| 578 | EIGHTE, SETX #XCHTP\r |
| 579 | ATX 0 / 0=8/E, 022=12,8/I,8/L\r |
| 580 | XTA 0\r |
| 581 | SETX #XCHCK / FOR INITIALISATION CHECK\r |
| 582 | ATX 0\r |
| 583 | SETX XRPLOT\r |
| 584 | TRAP4 #XNTST\r |
| 585 | FLDA P1\r |
| 586 | FSTA #XFCTX / FACTOR=1 INITIALLY\r |
| 587 | FSTA #XFCTY\r |
| 588 | FCLA\r |
| 589 | FSTA #XOLDP / AND REALLY MOVE IT!\r |
| 590 | FSTA #XPENC / SO WILL DO FIRST PEN MOVEMENT\r |
| 591 | FSTA #XXOLD\r |
| 592 | FSTA #XYOLD\r |
| 593 | FSTA #XORGX\r |
| 594 | FSTA #XORGY\r |
| 595 | FSTA PORS\r |
| 596 | JA PLTRTN\r |
| 597 | ENTRY PLEXIT / BE SHURE ALL DONE\r |
| 598 | WB4, TEXT 'PLEXIT'\r |
| 599 | PLEXIT,\r |
| 600 | FLDA# WB4\r |
| 601 | FSTA WBW\r |
| 602 | JSA PLTSTR\r |
| 603 | STARTF\r |
| 604 | TRAP3 #WRITO\r |
| 605 | JA UNIX80\r |
| 606 | JA FORM3\r |
| 607 | TRAP3 #RENDO\r |
| 608 | TRAP3 #REW / OUTPUT REMAINDER OF BUFFER AND RESET OUTPUT (NOT GOOD FOR FILE STRUCTURED DEVICES!!!!!)\r |
| 609 | / TRAP4 #XDNCK\r |
| 610 | JA PLTRTN\r |
| 611 | \f SECT #SYMBL\r |
| 612 | EXTERN SIN\r |
| 613 | EXTERN COS\r |
| 614 | EXTERN #XMBTB / HERE STARTS THE SYMBOL TABLE\r |
| 615 | /\r |
| 616 | / EXTERNAL REFERENCES INTO FIELD 1 (PDPPLT)\r |
| 617 | /\r |
| 618 | EXTERN #XTXAD\r |
| 619 | EXTERN #XLTCD\r |
| 620 | EXTERN #XPNOP\r |
| 621 | EXTERN #XLEFT\r |
| 622 | EXTERN #XRGHT\r |
| 623 | EXTERN #XNDLF\r |
| 624 | EXTERN #XNDRT\r |
| 625 | EXTERN #XPSNM\r |
| 626 | EXTERN #XPSIN\r |
| 627 | /\r |
| 628 | /\r |
| 629 | ENTRY SYMBOL\r |
| 630 | WB5, TEXT 'SYMBOL'\r |
| 631 | SYMBOL,\r |
| 632 | FLDA# WB5\r |
| 633 | FSTA WBW\r |
| 634 | JSA PLTSTR\r |
| 635 | JSR #XMBTB / LOAD THE SYMBOL TABLE ( SYMBTB )\r |
| 636 | SYM1, FLDA% ARG1,1\r |
| 637 | FSTA XPT / X POINT\r |
| 638 | FLDA% ARG1,1+\r |
| 639 | FSTA YPT / Y VALUE\r |
| 640 | FLDA% ARG1,1+\r |
| 641 | FSTA YDIFF / HEIGHT\r |
| 642 | FLDA% ARG1,1+\r |
| 643 | FSTA TERM1 / TEXT\r |
| 644 | FLDA% ARG1,1+\r |
| 645 | FSTA TERM2 / ANGLE\r |
| 646 | FLDA% ARG1,1+\r |
| 647 | FSTA ARG1 / NUMBER CHARS.\r |
| 648 | STARTF\r |
| 649 | FLDA% TERM2\r |
| 650 | FMUL DEGRAD / CONVERT TO RADIANS\r |
| 651 | FSTA XCHRPT / THEN DONT NEED SIND\r |
| 652 | FLDA% XPT\r |
| 653 | FSTA COSANG / VALUE OF X\r |
| 654 | FSUB F999 / IF X NEQ 999 THEN \r |
| 655 | JNE SY0 / WE USE THE X VALUE SPECIFIED ELSE\r |
| 656 | FLDA #XXOLD / WE START WITH THE OLD VALUE\r |
| 657 | FMUL #XINCX / THIS WILL CAUSE SOME TRUNCATION ERROR\r |
| 658 | FDIV #XFCTX / IN XYPLOT ROUTINE BUT THE ERROR IS SMALL\r |
| 659 | FSTA COSANG / AND WE HOPE FAC > 0 BUT THIS MUST NOT BE SO!\r |
| 660 | SY0,\r |
| 661 | FLDA% YPT\r |
| 662 | FSTA SINANG\r |
| 663 | FSUB F999 / IF Y NEQ 999 THEN\r |
| 664 | JNE SY1 / WE USE THE Y VALUE SPECIFIED ELSE\r |
| 665 | FLDA #XYOLD / WE START WITH THE OLD Y VALUE\r |
| 666 | FMUL #XINCY / THIS CAUSES SOME TRUNCATION ERRORS\r |
| 667 | FDIV #XFCTY\r |
| 668 | FSTA SINANG\r |
| 669 | SY1,\r |
| 670 | FCLA\r |
| 671 | FSTA #XTXAD\r |
| 672 | FSTA #XPENC / SO ALWAYS DOES INITIAL PEN U/D\r |
| 673 | FSTA CENTSY\r |
| 674 | FLDA TERM1 / GET TEXT ADDRESS\r |
| 675 | FSTA #XTXAD / PUT IT DOWN IN PDP PART\r |
| 676 | \f FLDA% YDIFF / ASSUME ITS A REGULAR\r |
| 677 | JGE NOTNEG / NEGATIVE SIZE IS NOT NICE\r |
| 678 | FNEG\r |
| 679 | NOTNEG, FDIV PF7 / ADJUST LATER IF A CENT\r |
| 680 | FSTA ANGADJ\r |
| 681 | FLDA% ARG1 / SHOWNS NUM. CHARS + PEN STATUS\r |
| 682 | FSTA NUMSYM\r |
| 683 | JGE REGSYM / GT OR =0 IS REG SYM\r |
| 684 | FLDA% TERM1 / CHECK FOR REG CHAR PASSED\r |
| 685 | FSUB F100 / AS AN INTEGER EQUIV.\r |
| 686 | JLT INTEQ / ITS A INTEGER EQUIV\r |
| 687 | FLDA% YDIFF / CENTERED SYMBOL\r |
| 688 | JGE NOTNG1\r |
| 689 | FNEG\r |
| 690 | NOTNG1, FDIV P4\r |
| 691 | FSTA ANGADJ\r |
| 692 | FLDA NUMSYM / -1=PEN UP, -2=PEN DOWN (CNTRD ONLY)\r |
| 693 | FADD P1\r |
| 694 | JGE UPPEN / MOVE WITH PEN UP\r |
| 695 | FSTA CENTSY / NEG MEANS DOWN FROM THE START\r |
| 696 | PTITON, FLDA PF2\r |
| 697 | CPEN, FSTA YCHRPT / =-2 FOR DOWN (CENT. + INTEQ ONLY)\r |
| 698 | / -3 FOR UP FOR ALL SYMBOLS + INTEQ\r |
| 699 | JSA SYMSTR / PLOT ORIGIN\r |
| 700 | JA .+10\r |
| 701 | JA COSANG\r |
| 702 | JA SINANG\r |
| 703 | JA YCHRPT\r |
| 704 | FLDA XPT\r |
| 705 | FMUL #XFCTX\r |
| 706 | FSTA XREAL / KEEP TRACK OF PASSED VALUES\r |
| 707 | FLDA YPT\r |
| 708 | FMUL #XFCTY\r |
| 709 | FSTA YREAL\r |
| 710 | JSA PENUP\r |
| 711 | FLDA CENTSY\r |
| 712 | JLE PENOK\r |
| 713 | JSA PNDOWN / PUT PEN DOWN NOW (CENT ONLY)\r |
| 714 | PENOK, JSR SIN\r |
| 715 | JA .+4\r |
| 716 | JA XCHRPT\r |
| 717 | FMUL ANGADJ\r |
| 718 | FSTA SINANG / SAVE SIN+HGT, USE FOR ALL VALUES\r |
| 719 | JSR COS\r |
| 720 | JA .+4\r |
| 721 | JA XCHRPT\r |
| 722 | FMUL ANGADJ\r |
| 723 | FSTA COSANG / COS(ANGLE)+HGT (IN INCREMENTS NOW)\r |
| 724 | LDX 0,4 / ZERO STEP COUNT\r |
| 725 | FLDA NUMENT\r |
| 726 | JGT NUM2 / JUMP IF FROM NUMBER\r |
| 727 | JA FSTLFT\r |
| 728 | UPPEN, FLDA P3 / \r |
| 729 | FSTA CENTSY / PUT PEN DOWN AFTER INITIAL MOVE\r |
| 730 | JA CPEN / MOVE WITH PEN UP\r |
| 731 | \fPENSET, JSA PNDOWN\r |
| 732 | ONEXY, JA .\r |
| 733 | SETX #XLTCD\r |
| 734 | XTA 2 / SET Y\r |
| 735 | FSTA YCHRPT\r |
| 736 | XTA 1 / GET X\r |
| 737 | FSTA XCHRPT / GET FIRST MOVE\r |
| 738 | SETX XRPLOT\r |
| 739 | FSUB PF7 / 7,0=PEN UP, 7,7=END\r |
| 740 | JEQ PENUPM\r |
| 741 | FLDA CENTSY\r |
| 742 | JEQ CALALL / CENTEREDS REQUIRE MODIFIED ORIGIN\r |
| 743 | FLDA PF2\r |
| 744 | FNEG\r |
| 745 | FADDM XCHRPT\r |
| 746 | FADDM YCHRPT\r |
| 747 | CALALL, JSA CALANG\r |
| 748 | JXN PENSET,5 / PUT PEN BACK DOWN IF NEG\r |
| 749 | JA ONEXY\r |
| 750 | INTEQ, FLDA NUMSYM / CHECK ON PEN\r |
| 751 | FADD P1\r |
| 752 | JLT PTITON\r |
| 753 | REGSYM, FLDA P3\r |
| 754 | JA CPEN\r |
| 755 | PENUPM, JSA PENUP\r |
| 756 | FLDA YCHRPT / CHECK FOR 7,7 END\r |
| 757 | FSUB PF7\r |
| 758 | JEQ NXTCHR / JUMP IF END OF CHARACTER\r |
| 759 | JA ONEXY / ON TO NEXT PAIR\r |
| 760 | PENUP, JA .\r |
| 761 | LDX 1,5 / SET FOR PEN UP\r |
| 762 | SETX #XDPXR\r |
| 763 | LDX 0,0 / PASS A ZERO FOR UP\r |
| 764 | SETX XRPLOT\r |
| 765 | / TRAP4 #XPNOP\r |
| 766 | FLDA# SDP / 'P' PEN UP\r |
| 767 | FSTA SYMPEN\r |
| 768 | JA PENUP\r |
| 769 | PNDOWN, JA .\r |
| 770 | SETX #XDPXR\r |
| 771 | LDX 1,0 / PASS A ONE FOR DOWN\r |
| 772 | SETX XRPLOT\r |
| 773 | / TRAP4 #XPNOP\r |
| 774 | FLDA# SDK / 'K' PEN DOWN\r |
| 775 | FSTA SYMPEN\r |
| 776 | LDX 0,5\r |
| 777 | JA PNDOWN\r |
| 778 | \fSYMPEN, F 0.0\r |
| 779 | CALANG, JA .\r |
| 780 | FLDA YCHRPT\r |
| 781 | FDIV #XINCY\r |
| 782 | FSTA YCHRPT / Y MOVE AS STEPS (UNITERGERIZED)\r |
| 783 | FMUL SINANG\r |
| 784 | FNEG\r |
| 785 | FSTA TERM1 / =-SINA*Y\r |
| 786 | FLDA XCHRPT\r |
| 787 | FDIV #XINCX\r |
| 788 | FSTA XCHRPT\r |
| 789 | FMUL COSANG\r |
| 790 | FADD TERM1\r |
| 791 | FMUL #XFCTX\r |
| 792 | JSA MAKINT\r |
| 793 | FSTA XACT / FOR AT END OF TEXT\r |
| 794 | FSTA XPT / X*COSA+OLDX-SINA*Y\r |
| 795 | / REQUIRES AN OLDX+OLDY TERM, BUT I DO THIS ALL REL TO A\r |
| 796 | / LOGICAL 0,0 FOR EACH CHAR, SO I #XLEFT THEM OUT.\r |
| 797 | FLDA YCHRPT\r |
| 798 | FMUL COSANG\r |
| 799 | FSTA TERM1 / COSA*Y\r |
| 800 | FLDA XCHRPT\r |
| 801 | FMUL SINANG\r |
| 802 | FADD TERM1\r |
| 803 | FMUL #XFCTY\r |
| 804 | JSA MAKINT\r |
| 805 | FSTA YACT\r |
| 806 | FSTA YPT / NEWX*SINA*OLDY*COSA*Y\r |
| 807 | FLDA P1\r |
| 808 | FSTA #XPENC / USE SAME ORIGIN THROUOUT THE LETTER\r |
| 809 | FNEG\r |
| 810 | FSTA PORS\r |
| 811 | / JSA PREREL / PEN MUST BE IN NEC POS BY NOW\r |
| 812 | TRAP3 #WRITO\r |
| 813 | JA UNIX80\r |
| 814 | JA FORM1\r |
| 815 | FLDA SYMPEN\r |
| 816 | TRAP3 #RSVO\r |
| 817 | FLDA YREAL\r |
| 818 | FDIV #XFCTY\r |
| 819 | FADD YPT\r |
| 820 | FADD #XORGY\r |
| 821 | TRAP3 #RSVO\r |
| 822 | FLDA XREAL\r |
| 823 | FDIV #XFCTX\r |
| 824 | FADD XPT\r |
| 825 | FADD #XORGX\r |
| 826 | FNEG\r |
| 827 | TRAP3 #RSVO\r |
| 828 | TRAP3 #RENDO\r |
| 829 | JA CALANG\r |
| 830 | \fLEFTJS, XTA 4 / NUM OF MOVES\r |
| 831 | SETX #XLTCD\r |
| 832 | ATX 0 / PASS NUMBER OF STEPS INTO LETTER\r |
| 833 | SETX XRPLOT\r |
| 834 | TRAP4 #XLEFT / RETURN WITH A X,Y PAIR\r |
| 835 | JSA ONEXY\r |
| 836 | XTA 4\r |
| 837 | SETX #XLTCD\r |
| 838 | ATX 0 / STEP COUNT\r |
| 839 | SETX XRPLOT\r |
| 840 | JNE NOTFST / CHANGE IF BEFORE FIRST MOVE OF CHARACTER\r |
| 841 | JSA PNDOWN / PUT PEN DOWN NOW\r |
| 842 | NOTFST, TRAP4 #XRGHT / SET NEXT XY PAIR\r |
| 843 | JSA ONEXY\r |
| 844 | ADDX 1,4 / UPDATE COUNT\r |
| 845 | JA LEFTJS / 77 AT END OF CHAR USED TO DET END\r |
| 846 | \fCENTEX, JSA PENUP\r |
| 847 | JA CENTOO\r |
| 848 | NXTCHR, FLDA CENTSY\r |
| 849 | JNE CENTEX / LEAVE PEN AT CENTER FOR CENTS ONLY\r |
| 850 | FSTA YCHRPT\r |
| 851 | FLDA PF7\r |
| 852 | FSTA XCHRPT / MOVE PEN TO 7,0 FOR REG CHARS\r |
| 853 | JSA CALANG / PLOT IT\r |
| 854 | FLDA XACT / UPDATE COLLECTIVE ENDING X VALUE\r |
| 855 | FMUL #XFCTX / WITH EFFECT OF FACTOR\r |
| 856 | FADDM XREAL / ALSO WITH EFFECT OF FACTOR\r |
| 857 | FLDA YACT / UPDATE COLLECTIVE ENDING Y VALUE\r |
| 858 | FMUL #XFCTY / WITH EFFECT OF FACTOR\r |
| 859 | FADDM YREAL\r |
| 860 | CENTOO, LDX 0,4 / ZERO STEP NUM WITHIN CHAR\r |
| 861 | FCLA\r |
| 862 | FSTA #XXOLD\r |
| 863 | FSTA #XYOLD\r |
| 864 | FLDA P1\r |
| 865 | FNEG\r |
| 866 | FADD NUMSYM / UPDATE COUNTER\r |
| 867 | JLE SYMDON / NO MORE\r |
| 868 | FSTA NUMSYM / MORE, SAVE COUNT\r |
| 869 | FLDA NUMENT\r |
| 870 | JGT NUM3 / EXIT FOR NUM SUBR\r |
| 871 | FCLA\r |
| 872 | JXN RTCHAR,3 / 1=CHAR IS #XRGHT SIX BITS\r |
| 873 | FSTLFT, LDX 1,3 / POINT TO #XRGHT 6 WHEN TIME FOR NEXT CHAR\r |
| 874 | FLDA NUMSYM\r |
| 875 | JLT NUM5 / JUMP IF CENTERED SYM OR INTEQ\r |
| 876 | / CENTEREDS + INTEQ EQUIV PASSING 3 WORD VALUE IN NUM5\r |
| 877 | / REG SYM USES PDP ROUTINE TO GET ONE WORD OF LIST\r |
| 878 | FCLA\r |
| 879 | TRAP4 #XNDLF\r |
| 880 | JA LEFTJS / GO PLOT THE ACTUAL CHAR\r |
| 881 | RTCHAR, LDX 0,3 / POINT TO #XLEFT 6 BITS FOR NEXT TIME\r |
| 882 | TRAP4 #XNDRT\r |
| 883 | JA LEFTJS\r |
| 884 | SYMDON, FCLA\r |
| 885 | FSTA PORS\r |
| 886 | FSTA NUMENT\r |
| 887 | FLDA XREAL / UPDATES ORG X VALUE\r |
| 888 | FDIV #XFCTX\r |
| 889 | JSA MAKINT\r |
| 890 | FSTA #XXOLD\r |
| 891 | FLDA YREAL / UPDATES ORG Y VALUE\r |
| 892 | FDIV #XFCTY\r |
| 893 | JSA MAKINT\r |
| 894 | FSTA #XYOLD\r |
| 895 | JA PLTRTN / NOW CAN CONTINUE PLOT FROM HERE\r |
| 896 | \f/ SPECIAL ENTRY FOR NUMBER SUBROUTINE\r |
| 897 | ENTRY SYMB\r |
| 898 | WB6, TEXT 'SYMB '\r |
| 899 | SYMB,\r |
| 900 | FLDA# WB6\r |
| 901 | FSTA WBW\r |
| 902 | JSA PLTSTR / SPECIAL ENTRY FOR NUMBER SUBROUTINE\r |
| 903 | JSR #XMBTB / LOAD THE SYMBOL TABLE (SYMBTB)\r |
| 904 | STARTF\r |
| 905 | FLDA P1\r |
| 906 | FSTA NUMENT\r |
| 907 | STARTD\r |
| 908 | JA SYM1\r |
| 909 | NUM2, SETX NUMENT / FOR NUMBER SUBROUTINE ONLY\r |
| 910 | / HERE ONLY FOR FIRST NUMBER OF STRING\r |
| 911 | LDX -1,2\r |
| 912 | NUM3, JSA GETARG / FOR SECOND AND LATER NUMBERS\r |
| 913 | TRAP4 #XPSNM\r |
| 914 | JA LEFTJS\r |
| 915 | NUM5, SETX NUMENT / FOR INTEQ + CENETEREDS\r |
| 916 | LDX -1,2\r |
| 917 | JSA GETARG\r |
| 918 | TRAP4 #XPSIN\r |
| 919 | JA LEFTJS\r |
| 920 | GETARG, JA .\r |
| 921 | SETX NUMENT / USED FOR MORE THAN ONE CHARACTER\r |
| 922 | STARTD\r |
| 923 | FLDA #XTXAD+1 / CENTEREDS SYMBOLS AND NUM SUBROUTINE\r |
| 924 | / PASS VALUES AS THREE WORDS\r |
| 925 | FSTA ARG1\r |
| 926 | STARTF\r |
| 927 | FLDA% ARG1,2+ / PASS A NUMBER\r |
| 928 | SETX #XTXAD\r |
| 929 | JSA MAKINT\r |
| 930 | ATX 0\r |
| 931 | SETX XRPLOT\r |
| 932 | JA GETARG\r |
| 933 | END\r |
| 934 | |
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