Home » Personal collection » Acorn tapes » Electron_User » Electron_User_tape20a_acorn_eu_1991_march.wav » ERRHdlr

ERRHdlr

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 » Personal collection » Acorn tapes » Electron_User » Electron_User_tape20a_acorn_eu_1991_march.wav
Filename: ERRHdlr
Read OK:
File size: 025B bytes
Load address: FFFF1A00
Exec address: FFFF8023
Duplicates

There are 3 duplicate copies of this file in the archive:

File contents
   10REM Error Handler Demo
   20REM By Stephen Ramplin
   30REM (c) The Micro User
   40ONERROR PROCerror(135,2,2):END
   50MODE135
   60VDU23;8202;0;0;0;
   70REM Don't correct the next line
   80Mistake
   90END
  100DEFPROCerror(mode%,back%,fwrd%)
  110VDU22,mode%:IFback%<2 back%=2
  120PRINT:REPORT:PRINT" at line ";ERL
  130I%=PAGE:IFNOT(I%?1=ERL DIV256 ANDI%?2=ERL MOD256) THENREPEAT:I%=I%+I%?3:UNTIL(I%?1=ERL DIV256 ANDI%?2=ERL MOD256)
  140J%=PAGE:DIMN%(back%-1):IFNOT(I%=J%) THEN REPEAT:FORN%=0TOback%-2:N%(N%)=N%(N%+1):NEXT:N%(back%-1)=J%?1*256+J%?2:J%=J%+J%?3:UNTIL(I%=J%):L%=N%(0)
  150C%=fwrd%:REPEAT:I%=I%+I%?3:C%=C%-1:UNTILC%=FALSE ORI%?1=&FF:H%=I%?1*256+I%?2:list$="KEY0 L."+STR$L%+","+STR$H%+"|M":$&700=list$:X%=0:Y%=7:CALL&FFF7:*FX138,0,128
  160ENDPROC

� Error Handler Demo
� By Stephen Ramplin
� (c) The Micro User
(� �error(135,2,2):�
2�135
<�23;8202;0;0;0;
F!� Don't correct the next line
PMistake
Z�
d��error(mode%,back%,fwrd%)
n�22,mode%:�back%<2 back%=2
x�:�:�" at line ";�
�OI%=�:�(I%?1=� �256 �I%?2=� �256) ��:I%=I%+I%?3:�(I%?1=� �256 �I%?2=� �256)
�zJ%=�:�N%(back%-1):�(I%=J%) � �:�N%=0�back%-2:N%(N%)=N%(N%+1):�:N%(back%-1)=J%?1*256+J%?2:J%=J%+J%?3:�(I%=J%):L%=N%(0)
��C%=fwrd%:�:I%=I%+I%?3:C%=C%-1:�C%=� �I%?1=&FF:H%=I%?1*256+I%?2:list$="KEY0 L."+�L%+","+�H%+"|M":$&700=list$:X%=0:Y%=7:�&FFF7:*FX138,0,128
��
�
00000000  0d 00 0a 18 f4 20 45 72  72 6f 72 20 48 61 6e 64  |..... Error Hand|
00000010  6c 65 72 20 44 65 6d 6f  0d 00 14 18 f4 20 42 79  |ler Demo..... By|
00000020  20 53 74 65 70 68 65 6e  20 52 61 6d 70 6c 69 6e  | Stephen Ramplin|
00000030  0d 00 1e 18 f4 20 28 63  29 20 54 68 65 20 4d 69  |..... (c) The Mi|
00000040  63 72 6f 20 55 73 65 72  0d 00 28 18 ee 85 20 f2  |cro User..(... .|
00000050  65 72 72 6f 72 28 31 33  35 2c 32 2c 32 29 3a e0  |error(135,2,2):.|
00000060  0d 00 32 08 eb 31 33 35  0d 00 3c 13 ef 32 33 3b  |..2..135..<..23;|
00000070  38 32 30 32 3b 30 3b 30  3b 30 3b 0d 00 46 21 f4  |8202;0;0;0;..F!.|
00000080  20 44 6f 6e 27 74 20 63  6f 72 72 65 63 74 20 74  | Don't correct t|
00000090  68 65 20 6e 65 78 74 20  6c 69 6e 65 0d 00 50 0b  |he next line..P.|
000000a0  4d 69 73 74 61 6b 65 0d  00 5a 05 e0 0d 00 64 1e  |Mistake..Z....d.|
000000b0  dd f2 65 72 72 6f 72 28  6d 6f 64 65 25 2c 62 61  |..error(mode%,ba|
000000c0  63 6b 25 2c 66 77 72 64  25 29 0d 00 6e 1e ef 32  |ck%,fwrd%)..n..2|
000000d0  32 2c 6d 6f 64 65 25 3a  e7 62 61 63 6b 25 3c 32  |2,mode%:.back%<2|
000000e0  20 62 61 63 6b 25 3d 32  0d 00 78 16 f1 3a f6 3a  | back%=2..x..:.:|
000000f0  f1 22 20 61 74 20 6c 69  6e 65 20 22 3b 9e 0d 00  |." at line ";...|
00000100  82 4f 49 25 3d 90 3a e7  ac 28 49 25 3f 31 3d 9e  |.OI%=.:..(I%?1=.|
00000110  20 81 32 35 36 20 80 49  25 3f 32 3d 9e 20 83 32  | .256 .I%?2=. .2|
00000120  35 36 29 20 8c f5 3a 49  25 3d 49 25 2b 49 25 3f  |56) ..:I%=I%+I%?|
00000130  33 3a fd 28 49 25 3f 31  3d 9e 20 81 32 35 36 20  |3:.(I%?1=. .256 |
00000140  80 49 25 3f 32 3d 9e 20  83 32 35 36 29 0d 00 8c  |.I%?2=. .256)...|
00000150  7a 4a 25 3d 90 3a de 4e  25 28 62 61 63 6b 25 2d  |zJ%=.:.N%(back%-|
00000160  31 29 3a e7 ac 28 49 25  3d 4a 25 29 20 8c 20 f5  |1):..(I%=J%) . .|
00000170  3a e3 4e 25 3d 30 b8 62  61 63 6b 25 2d 32 3a 4e  |:.N%=0.back%-2:N|
00000180  25 28 4e 25 29 3d 4e 25  28 4e 25 2b 31 29 3a ed  |%(N%)=N%(N%+1):.|
00000190  3a 4e 25 28 62 61 63 6b  25 2d 31 29 3d 4a 25 3f  |:N%(back%-1)=J%?|
000001a0  31 2a 32 35 36 2b 4a 25  3f 32 3a 4a 25 3d 4a 25  |1*256+J%?2:J%=J%|
000001b0  2b 4a 25 3f 33 3a fd 28  49 25 3d 4a 25 29 3a 4c  |+J%?3:.(I%=J%):L|
000001c0  25 3d 4e 25 28 30 29 0d  00 96 8d 43 25 3d 66 77  |%=N%(0)....C%=fw|
000001d0  72 64 25 3a f5 3a 49 25  3d 49 25 2b 49 25 3f 33  |rd%:.:I%=I%+I%?3|
000001e0  3a 43 25 3d 43 25 2d 31  3a fd 43 25 3d a3 20 84  |:C%=C%-1:.C%=. .|
000001f0  49 25 3f 31 3d 26 46 46  3a 48 25 3d 49 25 3f 31  |I%?1=&FF:H%=I%?1|
00000200  2a 32 35 36 2b 49 25 3f  32 3a 6c 69 73 74 24 3d  |*256+I%?2:list$=|
00000210  22 4b 45 59 30 20 4c 2e  22 2b c3 4c 25 2b 22 2c  |"KEY0 L."+.L%+",|
00000220  22 2b c3 48 25 2b 22 7c  4d 22 3a 24 26 37 30 30  |"+.H%+"|M":$&700|
00000230  3d 6c 69 73 74 24 3a 58  25 3d 30 3a 59 25 3d 37  |=list$:X%=0:Y%=7|
00000240  3a d6 26 46 46 46 37 3a  2a 46 58 31 33 38 2c 30  |:.&FFF7:*FX138,0|
00000250  2c 31 32 38 0d 00 a0 05  e1 0d ff                 |,128.......|
0000025b
ERRHdlr.m0
ERRHdlr.m1
ERRHdlr.m2
ERRHdlr.m4
ERRHdlr.m5