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TI 990 FORTH 1.0.0 Dave Pitts c 1983 980 West 6th Avenue Broomfield, CO 80020 ( Index of screens ) 000 System Info 001 - 003 System Index 004 - 005 System error messages 006 System Dump and Patch 007 System Printer support 051 - 062 System Editor ( Error messages ) EMPTY STACK DICTIONARY FULL HAS INCORRECT ADDRESS MODE ISN'T UNIQUE DISK RANGE ? FULL STACK DISK ERROR ! ( Error messages cont. ) COMPILATION ONLY, USE IN DEFINITION EXECUTION ONLY CONDITIONALS NOT PAIRED DEFINITION NOT FINISHED IN PROTECTED DICTIONARY USE ONLY WHEN LOADING OFF CURRENT EDITING SCREEN DECLARE VOCABULARY ( Dump and Patch ) FORTH DEFINITIONS HEX : ?NON-PRINTING DUP 020 < SWAP 07E > OR ; : &TYPE 0 DO DUP I + C@ DUP ?NON-PRINTING IF DROP 02E ( .) THEN EMIT LOOP DROP ; : &DUMP 0 DO DUP I + @ 0 5 D.R 2 +LOOP DROP ; : A-LINE CR SWAP DUP 0 6 D.R SPACE SWAP ." (" 4 .R ." )" 010 OVER OVER &DUMP 2 SPACES &TYPE ; : DUMP 0 DO DUP I + I A-LINE 010 ?TERMINAL IF LEAVE ENDIF +LOOP DROP CR ; : PATCH DUP 010 DUMP DUP ROT SWAP C! 010 DUMP ; : ZPEEK @ 0 D. ; : PEEK 0A0 + @ 0 D. ; : POKE DUP DUP >R PEEK 0A0 + ! R> PEEK ; : ZPOKE DUP DUP >R ZPEEK ! R> ZPEEK ; ( Printer support words ) FORTH DEFINITIONS HEX : FF ( Emit form feed with null timing ) 0C EMIT 6 0 DO 0 EMIT LOOP ; 0 VARIABLE S/PAGE : PRINT ( Print screens, form-2 to-1 ) 1+ 040 PBASE ! FF SWAP 0 S/PAGE ! DO I LIST S/PAGE @ 1+ DUP S/PAGE ! 3 = IF FF 0 S/PAGE ! ENDIF LOOP S/PAGE @ IF FF ENDIF 0 PBASE ! ; : TOF ( Force out a top of form ) 040 PBASE ! CR FF 0 PBASE ! ; DECIMAL ( Dump Disk ) FORTH DEFINITIONS HEX : DDUMP ( Dump disk from-2 to-1 ) 1+ SWAP DO CR DUP DECIMAL ." BLOCK " I DUP 5 .R DUP 01A /MOD 6 SPACES ." TRACK " 3 .R ." SECTOR " 3 .R CR HEX BLOCK 080 DUMP LOOP ; 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 HEX : NEWEXP OVER + OVER DO KEY DUP 07F = IF ( BS ) DROP 08 OVER I = DUP R> 2 - + >R - DUP 8 = IF 8 EMIT 20 EMIT ENDIF ELSE ( NOT BS ) DUP 0D = IF ( CR ) LEAVE DROP BL 0 ELSE DUP ENDIF I C! 0 I 1+ C! 0 I 2+ C! ENDIF EMIT LOOP DROP ; DECIMAL 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 DEFINITION NOT FINISHED IN PROTECTED DICTIONARY 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 DECLARE VOCABULARY 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 201 202 203 204 205 206 207 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 FORTH DEFINITIONS HEX : ?NON-PRINTING DUP 20 < SWAP 7E > OR ; 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 DUP ?NON-PRINTING IF DROP 2E ( .) THEN EMIT LOOP DROP ; 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 : A-LINE CR DUP 0 6 D.R SPACE 10 OVER OVER &DUMP 2 SPACES &TYPE ; 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 FORTH DEFINITIONS HEX : ?NON-PRINTING DUP 20 < SWAP 7E > OR ; 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 DUP ?NON-PRINTING IF DROP 2E ( .) THEN EMIT LOOP DROP ; 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 SPACES &TYPE ; 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 ( Text Editor ) FORTH DEFINITIONS HEX : TEXT ( accept following text to pad ) HERE C/L 1+ BLANKS WORD HERE PAD C/L 1+ CMOVE ; : LINE ( Relative to SCR, leave address of line ) DUP 0FFF0 AND 017 ?ERROR ( Keep on this screen ) SCR @ (LINE) DROP ; : A+ ( incr addr --- addr1 ) DUP 0 < IF SWAP - ELSE + ENDIF ; --> ( Line Editor ) VOCABULARY EDITOR IMMEDIATE HEX : WHERE ( Print screen # and image of error ) DUP B/SCR / DUP SCR ! ." SCR # " DECIMAL SWAP C/L /MOD C/L * ROT BLOCK + CR C/L TYPE CR HERE C@ - SPACES 05E EMIT [COMPILE] EDITOR QUIT ; EDITOR DEFINITIONS : #LOCATE ( Leave cursor offset-2, line-1 ) R# @ C/L /MOD ; : #LEAD ( Line address-2, offset-1 to cursor ) #LOCATE LINE SWAP ; : #LAG ( Cursor address-2, count-1 after cursor ) #LEAD DUP >R + C/L R> - ; : -MOVE ( Move in block buffer addr from-2, line to-1 ) LINE C/L CMOVE UPDATE ; --> ( Line editing commands ) : H ( Hold numbered line at pad ) LINE PAD 1+ C/L DUP PAD C! CMOVE ; : E ( Erase line-1 with blanks ) LINE C/L BLANKS UPDATE ; : S ( Spread making line # blank ) DUP 1 - ( limit ) 0E ( first to move ) DO I LINE I 1+ -MOVE -1 +LOOP E ; : D ( Delete line-1, but hold in pad ) DUP H 0F DUP ROT DO I 1+ LINE I -MOVE LOOP E ; --> ( Line editing commands ) : M ( Move cursor by signed amount-1, print its line ) R# +! CR SPACE #LEAD TYPE 05F EMIT #LAG TYPE #LOCATE . DROP ; : T ( Type line by #-1, save also in pad ) DUP C/L * R# ! DUP H 0 M ; : L ( Re-list screen ) SCR @ LIST 0 M ; : ML ( Move to specified line ) 0 R# ! 40 * M ; --> ( Line editing commands ) : R ( Replace on line #-1, from pad ) PAD 1+ SWAP -MOVE ; : P ( Put following text on line-1 ) 1 TEXT R ; : I ( Insert text from pad onto line # ) DUP S R ; : TOP ( Home cursor to top left of screen ) 0 R# ! ; --> ( Screen editing commands ) : CLEAR ( Clear screen by number-1 ) SCR ! 010 0 DO FORTH I EDITOR E LOOP ; : FLUSH ( Flush all update blocks to disk ) [ LIMIT FIRST - 0 B/BUF 4 + U/ SWAP DROP ] ( Calc blocks ) LITERAL 0 DO 07FFF BUFFER DROP LOOP ; : COPY ( Copy screen-2 to screen-1 ) B/SCR * OFFSET @ + SWAP B/SCR * B/SCR OVER + SWAP DO DUP FORTH I BLOCK 2 - ! 1+ UPDATE LOOP DROP FLUSH ; --> ( String editing commands ) : C ( Spread at cursor and copy in text ) 1 TEXT PAD COUNT #LAG ROT OVER MIN >R FORTH R R# +! ( bump cursor ) R - >R ( chars to save ) DUP HERE R CMOVE ( from old cursor to here ) HERE #LEAD + R> CMOVE ( here to cursor location ) R> CMOVE UPDATE ( pad to old cursor ) 0 M ( look at new line ) ; 0 VARIABLE STR-LEN 0 VARIABLE STR-ADDR 0 VARIABLE STR-PTR 0 VARIABLE CUR-LEN 0 VARIABLE CUR-FIRST 0 VARIABLE CUR-ADDR 0 VARIABLE CUR-PTR 0 VARIABLE CUR-LAST --> ( Match primitives ) : (MATCH) ( addr-3, addr-2, count-1 -- flag ) -DUP IF OVER + SWAP DO DUP C@ I C@ - IF 0= LEAVE ELSE 1+ ENDIF LOOP ELSE DROP 0= ENDIF ; : 2DROP DROP DROP ; : 2DUP OVER OVER ; : 2SWAP ROT >R ROT R> ; --> ( More Match ) : MATCH ( Cursor addr-4, bytes left-3, string addr-2 ( string count-1 -- flag-2, cursor offset-1 >R >R 2DUP R> R> 2SWAP OVER + SWAP ( caddr-6, bleft-5, $addr-4, $len-3, caddr+bleft-2, caddr-1 ) DO 2DUP I SWAP (MATCH) IF >R 2DROP R> - I SWAP - 0 SWAP 0 0 LEAVE ( caddr, bleft, $addr, $len OR 0, offset, 0, 0 ) ENDIF LOOP 2DROP ( caddr-2, bleft-1 OR 0-2, offset-1 ) SWAP 0= SWAP ; --> ( String editing commands cont. ) : 1LINE ( Scan line with cursor for match to pad text ) ( update cursor, return boolean ) #LAG PAD COUNT MATCH R# +! ; : FIND ( String at pad over full screen range, else error ) BEGIN 03FF R# @ < IF TOP PAD HERE C/L 1+ CMOVE 0 ERROR ENDIF 1LINE DUP 0= IF R# @ 040 /MOD DROP 040 SWAP - R# +! ENDIF UNTIL ; : DELETE ( Backwards at cursor by count-1 ) >R #LAG + FORTH R - ( save blank fill location ) #LAG R MINUS R# +! ( backup cursor ) #LEAD + SWAP CMOVE R> BLANKS UPDATE ; --> ( String editing commands cont. ) : N ( Find next occurance of previous text ) FIND 0 M ; : F ( Find occurance of following text ) 1 TEXT N ; : B ( Backup cursor by text in pad ) PAD C@ MINUS M ; : X ( Delete following text ) 1 TEXT FIND PAD C@ DELETE 0 M ; : TILL ( Delete on cursor line, from cursor to text end ) #LEAD + 1 TEXT 1LINE 0= 0 ?ERROR #LEAD + SWAP - DELETE 0 M ; --> ( Editor extensions ) : ENTER? ( start line# curr line# - f ) OVER = ; : ENTER ( - ) QUERY 1 TEXT ; : NULL? ( - f ) TIB @ C@ 0= ; : .BS ( - ) 08 EMIT ; : NEW ( start line# ) FORTH 010 0 DO CR I 3 .R SPACE I ENTER? IF ENTER NULL? IF .BS I SCR @ .LINE ELSE I EDITOR R FORTH 1+ THEN ELSE I SCR @ .LINE THEN LOOP DROP ; : UNDER ( start line # ) FORTH 1+ 010 0 DO CR I 3 .R SPACE I ENTER? IF ENTER NULL? IF .BS I SCR @ .LINE ELSE I EDITOR I FORTH 1+ THEN ELSE I SCR @ .LINE THEN LOOP DROP ; FORTH DEFINITIONS DECIMAL HERE FENCE ! ;S 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 PP 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 PXWID 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 DP D 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 ( Match primatives ) FORTH DEFINITIONS DECIMAL : (MATCH) ( addr-3, addr-2, count-1 -- flag ) -DUP IF OVER + SWAP DO DUP C@ I C@ - IF 0= LEAVE ELSE 1+ THEN LOOP ELSE DROP 0= THEN ; : 2DROP DROP DROP ; : 2DUP OVER OVER ; : 2SWAP ROT >R ROT R> ; --> ( More Match ) : MATCH ( Cursor addr-4, bytes left-3, string addr-2 ( string count-1 -- flag-2, cursor offset-1 >R >R 2DUP R> R> 2SWAP OVER + SWAP ( caddr-6, bleft-5, $addr-4, $len-3, caddr+bleft-2, caddr-1 ) DO 2DUP I SWAP (MATCH) IF >R 2DROP R> - I SWAP - 0 SWAP 0 0 LEAVE ( caddr, bleft, $addr, $len OR 0, offset, 0, 0 ) THEN LOOP 2DROP ( caddr-2, bleft-1 OR 0-2, offset-1 ) SWAP 0= SWAP ; --> ( polyFORTH compatible line editor ) FORTH DEFINITIONS HEX : TEXT ( accept following text to pad ) HERE C/L 1+ BLANKS WORD HERE PAD C/L 1+ CMOVE ; : LINE ( Relative to scr, leave address of line ) DUP 0FFF0 AND IF ." Not on current editing screen" QUIT THEN SCR @ (LINE) DROP ; --> ( WHERE, #LOCATE ) VOCABULARY EDITOR IMMEDIATE HEX : WHERE ( Print screen # and image of error ) DUP B/SCR / DUP SCR ! ." Scr # " DECIMAL . SWAP C/L /MOD C/L * ROT BLOCK + CR C/L TYPE CR HERE C@ - SPACES 05E EMIT [COMPILE] EDITOR QUIT ; EDITOR DEFINITIONS : #LOCATE ( --- cursor offset-2, line-1 ) R# @ C/L /MOD ; --> ( #LEAD, #LAG, -MOVE, BUF-MOVE ) : #LEAD ( --- line addr-2, offset to cursor-1 ) #LOCATE LINE SWAP ; : #LAG ( --- cursor addr-2, count after cursor-1 ) #LEAD DUP >R + C/L R> - ; : -MOVE ( Move from addr-2, to line-1 ) LINE C/L CMOVE UPDATE ; : BUF-MOVE ( Move text to buffer-1, if any ) PAD 1+ C@ IF PAD SWAP C/L 1+ CMOVE ELSE DROP THEN ; --> ( >LINE#, FIND-BUF, INSERT-BUF ) : >LINE# ( Convert current cursor position to line # ) #LOCATE SWAP DROP ; : FIND-BUF ( Buffer used for all searches ) PAD 050 + ; : INSERT-BUF ( Buffer used for all insertions ) FIND-BUF 050 + ; --> ( (HOLD-, (KILL-, (SPREAD-, X ) : (HOLD) ( Move line-1 from block to insert buffer ) LINE INSERT-BUF 1+ C/L DUP INSERT-BUF C! CMOVE ; : (KILL) ( Erase line-1 with blanks ) LINE C/L BLANKS UPDATE ; : (SPREAD) ( Spread making line# blank ) >LINE# DUP 1 - 0E DO I LINE I 1+ -MOVE -1 +LOOP (KILL) ; : X ( Delete line# from block, put in insert buffer ) >LINE# DUP (HOLD) 0F DUP ROT DO I 1+ LINE I -MOVE LOOP (KILL) ; --> ( DISPLAY-CURSOR, T, L ) : DISPLAY-CURSOR CR SPACE #LEAD TYPE 05E EMIT #LAG TYPE #LOCATE . DROP ; : T ( Type line#-1 ) C/L * R# ! 0 DISPLAY-CURSOR ; : L ( List current screen ) SCR @ LIST DISPLAY-CURSOR ; --> ( N, B, (TOP-, SEEK-ERROR ) : N ( Select next sequential screen ) 1 SCR +! ; : B ( Select previous sequential screen ) -1 SCR +! ; : (TOP) ( Reset cursor to top of block ) 0 R# ! ; : SEEK-ERROR ( Output error msg if no match ) (TOP) FIND-BUF HERE C/L 1+ CMOVE HERE COUNT TYPE ." None" QUIT ; --> ( (R-, P ) : (R) ( Replace current line with insert buffer ) >LINE# INSERT-BUF 1+ SWAP -MOVE ; : P ( Place following text in insert buffer and line ) 05E EMIT INSERT-BUF BUF-MOVE (R) ; : FLUSH ( Flush all UPDATE buffers to disk ) [ LIMIT FIRST - 0 B/BUF 4 + U/ SWAP DROP ] ( calc blocks ) LITERAL 0 DO 07FFF BUFFER DROP LOOP ; --> ( WIPE, COPY, 1LINE ) : WIPE ( Clear current screen ) 010 0 DO I (KILL) LOOP ; : COPY ( Copy screen-2 onto screen-1 ) FLUSH SWAP BLOCK SWAP BLOCK UPDATE 0400 CMOVE ; : 1LINE ( Scan current line for match with FIND buffer ) ( update cursor, return flag ) #LAG FIND-BUF COUNT MATCH R# +! ; --> ( (SEEK-, (DELETE- ) : (SEEK) ( FIND buffer match over full screen, else error ) BEGIN 03FF R# @ < IF SEEK-ERROR THEN 1LINE UNTIL ; : (DELETE) ( Backwards at cursor by count-1 ) >R #LAG + R - ( save blank fill location ) #LAG R MINUS R# +! ( back up cursor ) #LEAD + SWAP CMOVE R> BLANKS UPDATE ; ( fill from end of text ) --> ( (F-, F, (E-, E ) : (F) ( Find occurance of following text ) 05E TEXT FIND-BUF BUF-MOVE (SEEK) ; : F ( Find and display following text ) (F) DISPLAY-CURSOR ; : (E) ( Erase backwards from cursor ) FIND-BUF C@ (DELETE) ; : E ( Erase and display line ) (E) DISPLAY-CURSOR ; --> ( D, TILL ) : D ( Find, delete and display following text ) (F) E ; : TILL ( Delete from cursor to text end ) #LEAD + 05E TEXT FIND-BUF BUF-MOVE 1LINE 0= IF SEEK-ERROR THEN #LEAD + SWAP - (DELETE) DISPLAY-CURSOR ; --> ( COUNTER, BUMP ) 0 VARIABLE COUNTER : BUMP ( The line number and handle ) 1 COUNTER +! COUNTER @ 038 > IF 0 COUNTER ! CR CR 0F MESSAGE 0C EMIT THEN ; --> ( S ) : S ( From current to screen-1 for string ) 0C EMIT 05E TEXT 0 COUNTER ! FIND-BUF BUF-MOVE SCR @ DUP >R DO I SCR ! (TOP) BEGIN 1LINE IF DISPLAY-CURSOR SCR ? BUMP THEN 03FF R# @ < UNTIL LOOP R> SCR ! ; --> ( I, U ) : I ( Load insert buffer with text ) 05E TEXT ( load insert buffer with text ) INSERT-BUF BUF-MOVE ( if any ) INSERT-BUF COUNT #LAG ROT OVER MIN >R R R# +! ( bump cursor ) R - >R ( characters to save ) DUP HERE R CMOVE ( from old cursor to HERE ) HERE #LEAD + R> CMOVE ( HERE to cursor location ) R> CMOVE UPDATE ( pad to old cursor ) DISPLAY-CURSOR ; ( look at new line ) : U ( Insert following text under current line ) C/L R# +! (SPREAD) P ; --> ( R, M ) : R ( Replace found text with insert buffer ) (E) I ; : M ( Move from current line on current screen ) SCR @ >R ( to screen-2, UNDER line-1 ) R# @ >R ( save orig. screen and cursor loc. ) >LINE# (HOLD) ( move current line to insert buffer ) SWAP SCR ! ( set new screen # ) 1+ C/L * R# ( text is stored UNDER requested line ) (SPREAD) (R) ( store insert buffer in new screen ) R> C/L + R# ! ( set original cursor to next line ) R> SCR ! ; ( restore original screen ) FORTH DEFINITIONS DECIMAL 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 : E ( ERASE LINE-1 WITH BLANKS ) LINE C/L BLANKS UPDATE ; 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 DUP 1 - 0E DO I LINE I 1+ -MOVE -1 LOOP E ; 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 DUP H 0F DUP ROT DO I 1+ LINE I -MOVE LOOP E ; 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 ( LINE EDITING COMMANDS ) : M 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 : T 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 : L SCR @ LIST 0 M ; 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 ( LINE EDITING COMMANDS ) : R 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 : P 1 TEXT R ; 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 0 R# ! ; 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 --> 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 ( SCREEN EDITING COMMANDS ) : CLEAR ( CLEAR SCREEN BY NUMBER-1 ) 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 : FLUSH ( WRITE ALL UPDATED BLOCKS TO DISK ) [ LIMIT FIRST - B/BUF 4 + / ] 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 : COPY ( DUPLICATE SCREEN-2, ONTO SCREEN-1 ) B/SCR * OFFSET @ + SWAP B/SCR * B/SCR OVER + SWAP 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 --> 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 ( DOUBLE NUMBER SUPPORT ) ( OPERATES ON 32 BIT INTEGERS ) 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 : 2DROP DROP DROP ; 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 : 2SWAP ROT >R ROT >R ; 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 ( STRING EDITING PRIMITIVES ) : -TEXT ( ADDRESS-3, COUNT-2, ADDRESS-1 ) 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 DO DUP C@ FORTH I C@ - IF 0= LEAVE ELSE 1+ THEN LOOP 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 ( STRING COUNT-1, >> BOOL-2, CURSOR MOVE-1 ) >R >R 2DUP R> R> 2SWAP OVER + SWAP 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 IF >R 2DROP R> - I SWAP - 0 SWAP 0 0 LEAVE 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 ( STRING EDITING COMMANDS ) : 1LINE ( SCAN LINE WITH CURSOR FOR MATCH TO PAD ) 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 : FIND ( STRING AT PAD OVER FULL SCREEN ) 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1LINE UNTIL ; 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 #LAG R MINUS R# +! #LEAD + SWAP CMOVE 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 ( Addition quizzer ) 0 VARIABLE ADDEND 0 VARIABLE AUGEND 0 VARIABLE SEED 0 VARIABLE NUMMOD : RANDU BEGIN SEED @ DUP 1 SEED +! C@ DUP NUMMOD @ / NUMMOD @ * - DUP IF 1 ELSE 0 ENDIF UNTIL ; : GETADD RANDU ABS ADDEND ! ; : GETAUG RANDU ABS AUGEND ! ; : DISPADD ADDEND @ ." " 3 .R ; : DISPAUG AUGEND @ ." +" 3 .R ; : DISPSUB AUGEND @ ." -" 3 .R ; : GETNUM ." " 0 PAD 10 EXPECT PAD BEGIN DUP 1+ SWAP C@ DUP IF 48 - ROT 10 * + SWAP 0 ELSE 1 ENDIF UNTIL DROP DROP CR ; --> ( Adder continued ) 0 VARIABLE WRONG 0 VARIABLE RIGHT : ADDER 0 0 WRONG ! 0 RIGHT ! DO CR GETAUG GETADD CR DISPADD CR DISPAUG CR ." ---- " CR ADDEND @ AUGEND @ + GETNUM - IF CR ." That is incorrect, the answer is " ADDEND @ AUGEND @ + . 1 WRONG +! ELSE CR ." That is the RIGHT answer " 1 RIGHT +! ENDIF LOOP CR CR ." You have gotten " RIGHT @ . ." right answers " CR ." And have missed " WRONG @ . ." answers " CR ; --> ( Subtract exerciser ) : SUBTRACT 0 0 WRONG ! 0 RIGHT ! DO CR GETADD DISPADD BEGIN GETAUG ADDEND @ AUGEND @ < IF 0 ELSE 1 ENDIF UNTIL CR DISPSUB CR ." ---- " CR ADDEND @ AUGEND @ - GETNUM - IF CR ." That answer is WRONG, the correct answer is " ADDEND @ AUGEND @ - . 1 WRONG +! ELSE CR ." That is the RIGHT answer " 1 RIGHT +! ENDIF LOOP CR CR ." You have gotten " RIGHT @ . ." answers correct " CR ." And have missed " WRONG @ . ." answers " CR ; 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 : F ( FIND OCCUR. OF FOLLOWING TEXT ) 1 TEXT N ; 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 PAD C@ MINUS M ; 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 : TILL ( DELETE ON CURSOR, FROM CUR TO TEXT END ) 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 ( STRING EDITOR COMMANDS ) : C ( SPREAD AT CURSOR & COPY FOLLOWING TEXT ) 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 FORTH R R# +! R - >R 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 R> CMOVE UPDATE 0 M ; 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 ( EDITOR EXTENSIONS ) EDITOR DEFINITIONS 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 : NULL? ( - F ) TIB @ C@ 0= ; : .BS ( - ) 8 DROP ; 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 I ENTER? IF ENTER NULL? IF .BS I SCR @ .LINE ELSE I EDITOR R FORTH 1+ THEN ELSE I SCR @ .LINE 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 I ENTER? IF ENTER NULL? IF .BS I SCR @ .LINE ELSE I EDITOR I FORTH 1+ THEN ELSE I SCR @ .LINE 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 FORTH DEFINITIONS DECIMAL HERE FENCE ! 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001