Home » Archimedes archive » Archimedes World » AW-1995-02-Disc1.adf » Disk1Feb95 » !AWFeb95/Goodies/DrawBasic/!DrawBasic/Library/Examples/Chapter/BASICErr
!AWFeb95/Goodies/DrawBasic/!DrawBasic/Library/Examples/Chapter/BASICErr
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
Tape/disk: | Home » Archimedes archive » Archimedes World » AW-1995-02-Disc1.adf » Disk1Feb95 |
Filename: | !AWFeb95/Goodies/DrawBasic/!DrawBasic/Library/Examples/Chapter/BASICErr |
Read OK: | ✔ |
File size: | 03DD bytes |
Load address: | 0000 |
Exec address: | 0000 |
Duplicates
There are 3 duplicate copies of this file in the archive:
- Archimedes archive » Archimedes World » AW-1994-12-Disc1.adf » Disk1Dec94 » !AWDec94/Goodies/DrawBasic/!DrawBasic/Library/Examples/Chapter/BASICErr
- Archimedes archive » Archimedes World » AW-1995-01-Disc1.adf » Disk1Jan95 » !AWJan95/Goodies/DrawBasic/!DrawBasic/Library/Examples/Chapter/BASICErr
- Archimedes archive » Archimedes World » AW-1995-05-Disc1.adf » AWMay95_1 » InTheMag/DrawBasic/!DrawBasic/Library/Examples/Chapter/BASICErr
- Archimedes archive » Archimedes World » AW-1995-02-Disc1.adf » Disk1Feb95 » !AWFeb95/Goodies/DrawBasic/!DrawBasic/Library/Examples/Chapter/BASICErr
File contents
1REM ----------------------------------------------- 2REM 3REM Demonstrates error throwback for BASIC programs 4REM The following program line enables error throwback 5REM 6REM ----------------------------------------------- 7 8ON ERROR ON ERROR OFF : CHAIN "Throwback:Error" 9 10 11 n=100 12 angle=0 13 FOR i=1 To n 14 r=SQR(angle) 15 PRINT r 16 angle+=2*PI/n 17 NEXT 18 19 20REM -------------------------------------------------------- 21REM N.B. 22REM Throwback Only works if the DrawBasic system is 23REM enabled 24REM The first command following an ON ERROR call 25REM should be "ON ERROR OFF" since any subsequent 26REM errors will place your system in a loop 27REM causing it to hang. (CTR-BREAK or Alt-BREAK 28REM to reset) 29REM If "Throwback:Error" can not be found the 30REM presence of "ON ERROR OFF" above prevents your 31REM system from hanging. 32REM -----------------------------------------------------
5� ----------------------------------------------- � 5� Demonstrates error throwback for BASIC programs 8� The following program line enables error throwback � 5� ----------------------------------------------- #� � � � � : � "Throwback:Error" n=100 angle=0 � i=1 To n r=�(angle) � r angle+=2*�/n � >� -------------------------------------------------------- � N.B. =� Throwback Only works if the DrawBasic system is � enabled :� The first command following an ON ERROR call <� should be "ON ERROR OFF" since any subsequent 6� errors will place your system in a loop :� causing it to hang. (CTR-BREAK or Alt-BREAK � to reset) 8� If "Throwback:Error" can not be found the =� presence of "ON ERROR OFF" above prevents your #� system from hanging. ;� ----------------------------------------------------- �
00000000 0d 00 01 35 f4 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |...5. ----------| 00000010 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| * 00000030 2d 2d 2d 2d 2d 0d 00 02 05 f4 0d 00 03 35 f4 20 |-----........5. | 00000040 44 65 6d 6f 6e 73 74 72 61 74 65 73 20 65 72 72 |Demonstrates err| 00000050 6f 72 20 74 68 72 6f 77 62 61 63 6b 20 66 6f 72 |or throwback for| 00000060 20 42 41 53 49 43 20 70 72 6f 67 72 61 6d 73 0d | BASIC programs.| 00000070 00 04 38 f4 20 54 68 65 20 66 6f 6c 6c 6f 77 69 |..8. The followi| 00000080 6e 67 20 70 72 6f 67 72 61 6d 20 6c 69 6e 65 20 |ng program line | 00000090 65 6e 61 62 6c 65 73 20 65 72 72 6f 72 20 74 68 |enables error th| 000000a0 72 6f 77 62 61 63 6b 0d 00 05 05 f4 0d 00 06 35 |rowback........5| 000000b0 f4 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |. --------------| 000000c0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| * 000000e0 2d 0d 00 07 04 0d 00 08 23 ee 20 85 20 ee 20 85 |-.......#. . . .| 000000f0 20 87 20 3a 20 d7 20 22 54 68 72 6f 77 62 61 63 | . : . "Throwbac| 00000100 6b 3a 45 72 72 6f 72 22 0d 00 09 04 0d 00 0a 04 |k:Error"........| 00000110 0d 00 0b 0a 20 6e 3d 31 30 30 0d 00 0c 0c 20 61 |.... n=100.... a| 00000120 6e 67 6c 65 3d 30 0d 00 0d 0f 20 e3 20 69 3d 31 |ngle=0.... . i=1| 00000130 20 54 6f 20 6e 0d 00 0e 10 20 20 72 3d b6 28 61 | To n.... r=.(a| 00000140 6e 67 6c 65 29 0d 00 0f 09 20 20 f1 20 72 0d 00 |ngle).... . r..| 00000150 10 12 20 20 61 6e 67 6c 65 2b 3d 32 2a af 2f 6e |.. angle+=2*./n| 00000160 0d 00 11 07 20 20 ed 0d 00 12 04 0d 00 13 04 0d |.... ..........| 00000170 00 14 3e f4 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |..>. -----------| 00000180 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| * 000001a0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0d 00 15 |-------------...| 000001b0 0a f4 20 4e 2e 42 2e 0d 00 16 3d f4 20 20 20 20 |.. N.B....=. | 000001c0 20 20 20 20 20 54 68 72 6f 77 62 61 63 6b 20 4f | Throwback O| 000001d0 6e 6c 79 20 77 6f 72 6b 73 20 69 66 20 74 68 65 |nly works if the| 000001e0 20 44 72 61 77 42 61 73 69 63 20 73 79 73 74 65 | DrawBasic syste| 000001f0 6d 20 69 73 0d 00 17 16 f4 20 20 20 20 20 20 20 |m is..... | 00000200 20 20 20 65 6e 61 62 6c 65 64 0d 00 18 3a f4 20 | enabled...:. | 00000210 20 20 20 20 20 20 20 20 54 68 65 20 66 69 72 73 | The firs| 00000220 74 20 63 6f 6d 6d 61 6e 64 20 66 6f 6c 6c 6f 77 |t command follow| 00000230 69 6e 67 20 61 6e 20 4f 4e 20 45 52 52 4f 52 20 |ing an ON ERROR | 00000240 63 61 6c 6c 0d 00 19 3c f4 20 20 20 20 20 20 20 |call...<. | 00000250 20 20 20 73 68 6f 75 6c 64 20 62 65 20 22 4f 4e | should be "ON| 00000260 20 45 52 52 4f 52 20 4f 46 46 22 20 73 69 6e 63 | ERROR OFF" sinc| 00000270 65 20 61 6e 79 20 73 75 62 73 65 71 75 65 6e 74 |e any subsequent| 00000280 0d 00 1a 36 f4 20 20 20 20 20 20 20 20 20 20 65 |...6. e| 00000290 72 72 6f 72 73 20 77 69 6c 6c 20 70 6c 61 63 65 |rrors will place| 000002a0 20 79 6f 75 72 20 73 79 73 74 65 6d 20 69 6e 20 | your system in | 000002b0 61 20 6c 6f 6f 70 0d 00 1b 3a f4 20 20 20 20 20 |a loop...:. | 000002c0 20 20 20 20 20 63 61 75 73 69 6e 67 20 69 74 20 | causing it | 000002d0 74 6f 20 68 61 6e 67 2e 20 28 43 54 52 2d 42 52 |to hang. (CTR-BR| 000002e0 45 41 4b 20 6f 72 20 41 6c 74 2d 42 52 45 41 4b |EAK or Alt-BREAK| 000002f0 0d 00 1c 18 f4 20 20 20 20 20 20 20 20 20 20 74 |..... t| 00000300 6f 20 72 65 73 65 74 29 0d 00 1d 38 f4 20 20 20 |o reset)...8. | 00000310 20 20 20 20 20 20 20 49 66 20 22 54 68 72 6f 77 | If "Throw| 00000320 62 61 63 6b 3a 45 72 72 6f 72 22 20 63 61 6e 20 |back:Error" can | 00000330 6e 6f 74 20 62 65 20 66 6f 75 6e 64 20 74 68 65 |not be found the| 00000340 0d 00 1e 3d f4 20 20 20 20 20 20 20 20 20 20 70 |...=. p| 00000350 72 65 73 65 6e 63 65 20 6f 66 20 22 4f 4e 20 45 |resence of "ON E| 00000360 52 52 4f 52 20 4f 46 46 22 20 61 62 6f 76 65 20 |RROR OFF" above | 00000370 70 72 65 76 65 6e 74 73 20 79 6f 75 72 0d 00 1f |prevents your...| 00000380 23 f4 20 20 20 20 20 20 20 20 20 20 73 79 73 74 |#. syst| 00000390 65 6d 20 66 72 6f 6d 20 68 61 6e 67 69 6e 67 2e |em from hanging.| 000003a0 0d 00 20 3b f4 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |.. ;. ----------| 000003b0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| * 000003d0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0d ff |-----------..| 000003dd