Home » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_24.ADF » F/Rescue1
F/Rescue1
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 ADFS disks » Electron_User_Group » EUG_24.ADF |
| Filename: | F/Rescue1 |
| Read OK: | ✔ |
| File size: | 0966 bytes |
| Load address: | 72204556 |
| Exec address: | 75637365 |
File contents
RESCUE PROBLEMS ~~~~~~~~~~~~~~~ I was very interested in Ross Littles account of how he rescued his disc as I have had some similar problems. I was modifying a program in one of the directories of a rather full DS disc when I got a 'Broken directory' message. Why this happened, I do not know. Perhaps it was my fumble fingers at the keyboard ?? Fortunately I could access all the other directories and only got it when trying get my program. I tried the discsearch program which Ross used to find the directory and my programs only to find they were on side 2 and the program only covered side 1. The program was easily modified to cover side 2 by altering the value in the FOR/NEXT loop from &4FF to &9FF. This found the disc addresses of my programs and the directory toward the end of side 2. I then tried to recover them using the recover program. When I entered the disc addresses, I could not get them as I got a 'Bad program' response when I altered PAGE to &2000 where the program should be. Apparantly, the program does not seem to accept addresses above &4FF. I then thought of the program 'EXAMINE' (EU Jun 89). This will accept all disc addresses and it is easy to alter the number of sectors read although only the first sector is displayed. The program is then loaded to &3000 and can then be recovered by altering PAGE to &3000. Having recovered my programs, I then tried to find what was wrong with the directory. I tried clearing it but this had no effect. On looking at the root directory, I found that it seemed this was badly corrupted so I had to set up another disc with necessary dirrctories and transfer all the programs from the faulty disc and then add the recovered programs and all was well. On another DS disc, I found that I had a disc fault 48 in one of my files and I had as usual no backup. I was able to read the other sectors and after some adjustment, as it is necessary to SAVE from the beginning of a line or for the beginning part to set TOP at the end of a line, I was able to recover most of the file. This was one of six files which are used as overlays to a main program as is used in the 'Circuit' program. It draws a plan of my little flat and I was able to add the gaps in the file to complete it. Richard Dimond **************************************************************************
00000000 0d 52 45 53 43 55 45 20 50 52 4f 42 4c 45 4d 53 |.RESCUE PROBLEMS| 00000010 0d 7e 7e 7e 7e 7e 7e 7e 7e 7e 7e 7e 7e 7e 7e 7e |.~~~~~~~~~~~~~~~| 00000020 0d 49 20 77 61 73 20 76 65 72 79 20 69 6e 74 65 |.I was very inte| 00000030 72 65 73 74 65 64 20 69 6e 1a 20 52 6f 73 73 1a |rested in. Ross.| 00000040 20 4c 69 74 74 6c 65 73 20 61 63 63 6f 75 6e 74 | Littles account| 00000050 20 6f 66 20 68 6f 77 20 68 65 20 72 65 73 63 75 | of how he rescu| 00000060 65 64 20 68 69 73 20 64 69 73 63 0d 61 73 20 49 |ed his disc.as I| 00000070 20 68 61 76 65 20 68 61 64 20 73 6f 6d 65 20 73 | have had some s| 00000080 69 6d 69 6c 61 72 20 70 72 6f 62 6c 65 6d 73 2e |imilar problems.| 00000090 0d 0d 49 1a 20 77 61 73 1a 20 6d 6f 64 69 66 79 |..I. was. modify| 000000a0 69 6e 67 1a 20 61 20 70 72 6f 67 72 61 6d 20 69 |ing. a program i| 000000b0 6e 20 6f 6e 65 20 6f 66 20 74 68 65 20 64 69 72 |n one of the dir| 000000c0 65 63 74 6f 72 69 65 73 20 6f 66 20 61 20 72 61 |ectories of a ra| 000000d0 74 68 65 72 20 66 75 6c 6c 20 44 53 0d 64 69 73 |ther full DS.dis| 000000e0 63 20 77 68 65 6e 20 49 20 67 6f 74 20 61 20 27 |c when I got a '| 000000f0 42 72 6f 6b 65 6e 20 64 69 72 65 63 74 6f 72 79 |Broken directory| 00000100 27 20 6d 65 73 73 61 67 65 2e 20 20 57 68 79 20 |' message. Why | 00000110 74 68 69 73 20 68 61 70 70 65 6e 65 64 2c 20 49 |this happened, I| 00000120 20 64 6f 20 6e 6f 74 0d 6b 6e 6f 77 2e 20 20 50 | do not.know. P| 00000130 65 72 68 61 70 73 20 69 74 20 77 61 73 20 6d 79 |erhaps it was my| 00000140 1a 20 66 75 6d 62 6c 65 20 66 69 6e 67 65 72 73 |. fumble fingers| 00000150 20 61 74 20 74 68 65 20 6b 65 79 62 6f 61 72 64 | at the keyboard| 00000160 20 3f 3f 20 20 46 6f 72 74 75 6e 61 74 65 6c 79 | ?? Fortunately| 00000170 20 49 0d 63 6f 75 6c 64 20 61 63 63 65 73 73 20 | I.could access | 00000180 61 6c 6c 20 74 68 65 20 6f 74 68 65 72 20 64 69 |all the other di| 00000190 72 65 63 74 6f 72 69 65 73 1a 20 61 6e 64 20 6f |rectories. and o| 000001a0 6e 6c 79 20 67 6f 74 20 69 74 20 77 68 65 6e 20 |nly got it when | 000001b0 74 72 79 69 6e 67 20 67 65 74 20 6d 79 0d 70 72 |trying get my.pr| 000001c0 6f 67 72 61 6d 2e 0d 0d 49 20 74 72 69 65 64 20 |ogram...I tried | 000001d0 74 68 65 20 64 69 73 63 73 65 61 72 63 68 20 70 |the discsearch p| 000001e0 72 6f 67 72 61 6d 20 77 68 69 63 68 20 52 6f 73 |rogram which Ros| 000001f0 73 1a 20 75 73 65 64 1a 20 74 6f 20 66 69 6e 64 |s. used. to find| 00000200 20 74 68 65 20 64 69 72 65 63 74 6f 72 79 20 61 | the directory a| 00000210 6e 64 0d 6d 79 20 70 72 6f 67 72 61 6d 73 20 6f |nd.my programs o| 00000220 6e 6c 79 20 74 6f 20 66 69 6e 64 20 74 68 65 79 |nly to find they| 00000230 20 77 65 72 65 20 6f 6e 20 73 69 64 65 1a 20 32 | were on side. 2| 00000240 20 61 6e 64 20 74 68 65 20 70 72 6f 67 72 61 6d | and the program| 00000250 20 6f 6e 6c 79 20 63 6f 76 65 72 65 64 0d 73 69 | only covered.si| 00000260 64 65 20 31 2e 20 20 54 68 65 20 70 72 6f 67 72 |de 1. The progr| 00000270 61 6d 20 77 61 73 20 65 61 73 69 6c 79 20 6d 6f |am was easily mo| 00000280 64 69 66 69 65 64 20 74 6f 20 63 6f 76 65 72 20 |dified to cover | 00000290 73 69 64 65 1a 20 32 1a 20 62 79 20 61 6c 74 65 |side. 2. by alte| 000002a0 72 69 6e 67 20 74 68 65 0d 76 61 6c 75 65 20 69 |ring the.value i| 000002b0 6e 20 74 68 65 20 46 4f 52 2f 4e 45 58 54 20 6c |n the FOR/NEXT l| 000002c0 6f 6f 70 1a 20 66 72 6f 6d 1a 20 26 34 46 46 1a |oop. from. &4FF.| 000002d0 20 74 6f 1a 20 26 39 46 46 2e 1a 20 20 54 68 69 | to. &9FF.. Thi| 000002e0 73 1a 20 66 6f 75 6e 64 1a 20 74 68 65 1a 20 64 |s. found. the. d| 000002f0 69 73 63 0d 61 64 64 72 65 73 73 65 73 20 6f 66 |isc.addresses of| 00000300 20 6d 79 20 70 72 6f 67 72 61 6d 73 20 61 6e 64 | my programs and| 00000310 20 74 68 65 20 64 69 72 65 63 74 6f 72 79 20 74 | the directory t| 00000320 6f 77 61 72 64 20 74 68 65 20 65 6e 64 20 6f 66 |oward the end of| 00000330 20 73 69 64 65 20 32 2e 0d 0d 49 20 74 68 65 6e | side 2...I then| 00000340 20 74 72 69 65 64 20 74 6f 20 72 65 63 6f 76 65 | tried to recove| 00000350 72 1a 20 74 68 65 6d 1a 20 75 73 69 6e 67 1a 20 |r. them. using. | 00000360 74 68 65 20 72 65 63 6f 76 65 72 20 70 72 6f 67 |the recover prog| 00000370 72 61 6d 2e 20 20 57 68 65 6e 20 49 20 65 6e 74 |ram. When I ent| 00000380 65 72 65 64 0d 74 68 65 20 64 69 73 63 20 61 64 |ered.the disc ad| 00000390 64 72 65 73 73 65 73 2c 20 49 20 63 6f 75 6c 64 |dresses, I could| 000003a0 20 6e 6f 74 20 67 65 74 20 74 68 65 6d 20 61 73 | not get them as| 000003b0 20 49 20 67 6f 74 20 61 20 27 42 61 64 20 70 72 | I got a 'Bad pr| 000003c0 6f 67 72 61 6d 27 20 72 65 73 70 6f 6e 73 65 0d |ogram' response.| 000003d0 77 68 65 6e 20 49 20 61 6c 74 65 72 65 64 20 50 |when I altered P| 000003e0 41 47 45 20 74 6f 20 26 32 30 30 30 20 77 68 65 |AGE to &2000 whe| 000003f0 72 65 20 74 68 65 20 70 72 6f 67 72 61 6d 20 73 |re the program s| 00000400 68 6f 75 6c 64 20 62 65 2e 20 20 41 70 70 61 72 |hould be. Appar| 00000410 61 6e 74 6c 79 2c 20 74 68 65 0d 70 72 6f 67 72 |antly, the.progr| 00000420 61 6d 20 64 6f 65 73 20 6e 6f 74 20 73 65 65 6d |am does not seem| 00000430 20 74 6f 20 61 63 63 65 70 74 20 61 64 64 72 65 | to accept addre| 00000440 73 73 65 73 20 61 62 6f 76 65 1a 20 26 34 46 46 |sses above. &4FF| 00000450 2e 1a 20 20 49 20 74 68 65 6e 20 74 68 6f 75 67 |.. I then thoug| 00000460 68 74 20 6f 66 0d 74 68 65 20 70 72 6f 67 72 61 |ht of.the progra| 00000470 6d 20 20 27 45 58 41 4d 49 4e 45 27 20 28 45 55 |m 'EXAMINE' (EU| 00000480 20 4a 75 6e 20 38 39 29 2e 20 20 54 68 69 73 20 | Jun 89). This | 00000490 77 69 6c 6c 20 61 63 63 65 70 74 20 61 6c 6c 1a |will accept all.| 000004a0 20 64 69 73 63 1a 20 61 64 64 72 65 73 73 65 73 | disc. addresses| 000004b0 0d 61 6e 64 20 69 74 20 69 73 20 65 61 73 79 20 |.and it is easy | 000004c0 74 6f 20 61 6c 74 65 72 20 74 68 65 20 6e 75 6d |to alter the num| 000004d0 62 65 72 20 6f 66 20 73 65 63 74 6f 72 73 20 72 |ber of sectors r| 000004e0 65 61 64 20 61 6c 74 68 6f 75 67 68 20 6f 6e 6c |ead although onl| 000004f0 79 20 74 68 65 20 66 69 72 73 74 0d 73 65 63 74 |y the first.sect| 00000500 6f 72 1a 20 69 73 20 64 69 73 70 6c 61 79 65 64 |or. is displayed| 00000510 2e 20 20 54 68 65 20 70 72 6f 67 72 61 6d 20 69 |. The program i| 00000520 73 20 74 68 65 6e 20 6c 6f 61 64 65 64 20 74 6f |s then loaded to| 00000530 20 26 33 30 30 30 20 61 6e 64 20 63 61 6e 20 74 | &3000 and can t| 00000540 68 65 6e 20 62 65 0d 72 65 63 6f 76 65 72 65 64 |hen be.recovered| 00000550 20 62 79 20 61 6c 74 65 72 69 6e 67 20 50 41 47 | by altering PAG| 00000560 45 20 74 6f 20 26 33 30 30 30 2e 0d 0d 48 61 76 |E to &3000...Hav| 00000570 69 6e 67 20 72 65 63 6f 76 65 72 65 64 20 6d 79 |ing recovered my| 00000580 20 70 72 6f 67 72 61 6d 73 2c 20 49 20 74 68 65 | programs, I the| 00000590 6e 20 74 72 69 65 64 20 74 6f 20 66 69 6e 64 20 |n tried to find | 000005a0 77 68 61 74 20 77 61 73 20 77 72 6f 6e 67 20 77 |what was wrong w| 000005b0 69 74 68 20 74 68 65 0d 64 69 72 65 63 74 6f 72 |ith the.director| 000005c0 79 2e 20 20 49 20 74 72 69 65 64 20 63 6c 65 61 |y. I tried clea| 000005d0 72 69 6e 67 20 69 74 20 62 75 74 20 74 68 69 73 |ring it but this| 000005e0 20 68 61 64 20 6e 6f 20 65 66 66 65 63 74 2e 20 | had no effect. | 000005f0 20 4f 6e 20 6c 6f 6f 6b 69 6e 67 20 61 74 20 74 | On looking at t| 00000600 68 65 0d 72 6f 6f 74 20 64 69 72 65 63 74 6f 72 |he.root director| 00000610 79 2c 20 49 20 66 6f 75 6e 64 20 74 68 61 74 20 |y, I found that | 00000620 69 74 20 73 65 65 6d 65 64 20 74 68 69 73 20 77 |it seemed this w| 00000630 61 73 20 62 61 64 6c 79 20 63 6f 72 72 75 70 74 |as badly corrupt| 00000640 65 64 20 73 6f 1a 20 49 1a 20 68 61 64 0d 74 6f |ed so. I. had.to| 00000650 1a 20 73 65 74 1a 20 75 70 1a 20 61 6e 6f 74 68 |. set. up. anoth| 00000660 65 72 1a 20 64 69 73 63 20 77 69 74 68 20 6e 65 |er. disc with ne| 00000670 63 65 73 73 61 72 79 20 64 69 72 72 63 74 6f 72 |cessary dirrctor| 00000680 69 65 73 20 61 6e 64 20 74 72 61 6e 73 66 65 72 |ies and transfer| 00000690 20 61 6c 6c 20 74 68 65 0d 70 72 6f 67 72 61 6d | all the.program| 000006a0 73 20 66 72 6f 6d 20 74 68 65 20 66 61 75 6c 74 |s from the fault| 000006b0 79 20 64 69 73 63 1a 20 61 6e 64 20 74 68 65 6e |y disc. and then| 000006c0 20 61 64 64 20 74 68 65 20 72 65 63 6f 76 65 72 | add the recover| 000006d0 65 64 20 70 72 6f 67 72 61 6d 73 20 61 6e 64 20 |ed programs and | 000006e0 61 6c 6c 0d 77 61 73 20 77 65 6c 6c 2e 0d 0d 4f |all.was well...O| 000006f0 6e 20 61 6e 6f 74 68 65 72 20 44 53 20 64 69 73 |n another DS dis| 00000700 63 2c 20 49 20 66 6f 75 6e 64 20 74 68 61 74 1a |c, I found that.| 00000710 20 49 20 68 61 64 20 61 20 64 69 73 63 20 66 61 | I had a disc fa| 00000720 75 6c 74 20 34 38 20 69 6e 20 6f 6e 65 20 6f 66 |ult 48 in one of| 00000730 20 6d 79 20 66 69 6c 65 73 0d 61 6e 64 20 49 20 | my files.and I | 00000740 68 61 64 20 61 73 20 75 73 75 61 6c 20 6e 6f 20 |had as usual no | 00000750 62 61 63 6b 75 70 2e 20 20 49 1a 20 77 61 73 1a |backup. I. was.| 00000760 20 61 62 6c 65 1a 20 74 6f 20 72 65 61 64 20 74 | able. to read t| 00000770 68 65 20 6f 74 68 65 72 20 73 65 63 74 6f 72 73 |he other sectors| 00000780 20 61 6e 64 0d 61 66 74 65 72 20 73 6f 6d 65 20 | and.after some | 00000790 61 64 6a 75 73 74 6d 65 6e 74 2c 20 61 73 20 69 |adjustment, as i| 000007a0 74 20 69 73 20 6e 65 63 65 73 73 61 72 79 20 74 |t is necessary t| 000007b0 6f 20 53 41 56 45 20 66 72 6f 6d 20 74 68 65 1a |o SAVE from the.| 000007c0 20 62 65 67 69 6e 6e 69 6e 67 20 6f 66 20 61 0d | beginning of a.| 000007d0 6c 69 6e 65 20 6f 72 20 66 6f 72 20 74 68 65 20 |line or for the | 000007e0 62 65 67 69 6e 6e 69 6e 67 20 70 61 72 74 20 74 |beginning part t| 000007f0 6f 20 73 65 74 20 54 4f 50 20 61 74 20 74 68 65 |o set TOP at the| 00000800 20 65 6e 64 20 6f 66 20 61 20 6c 69 6e 65 2c 20 | end of a line, | 00000810 49 20 77 61 73 20 61 62 6c 65 0d 74 6f 20 72 65 |I was able.to re| 00000820 63 6f 76 65 72 20 6d 6f 73 74 20 6f 66 20 74 68 |cover most of th| 00000830 65 20 66 69 6c 65 2e 20 20 54 68 69 73 20 77 61 |e file. This wa| 00000840 73 20 6f 6e 65 20 6f 66 20 73 69 78 20 66 69 6c |s one of six fil| 00000850 65 73 1a 20 77 68 69 63 68 20 61 72 65 20 75 73 |es. which are us| 00000860 65 64 20 61 73 0d 6f 76 65 72 6c 61 79 73 1a 20 |ed as.overlays. | 00000870 74 6f 20 61 20 6d 61 69 6e 20 70 72 6f 67 72 61 |to a main progra| 00000880 6d 20 61 73 20 69 73 20 75 73 65 64 20 69 6e 20 |m as is used in | 00000890 74 68 65 20 27 43 69 72 63 75 69 74 27 20 70 72 |the 'Circuit' pr| 000008a0 6f 67 72 61 6d 2e 20 20 49 74 20 64 72 61 77 73 |ogram. It draws| 000008b0 0d 61 20 70 6c 61 6e 1a 20 6f 66 1a 20 6d 79 1a |.a plan. of. my.| 000008c0 20 6c 69 74 74 6c 65 1a 20 66 6c 61 74 20 61 6e | little. flat an| 000008d0 64 20 49 20 77 61 73 20 61 62 6c 65 20 74 6f 20 |d I was able to | 000008e0 61 64 64 20 74 68 65 20 67 61 70 73 20 69 6e 20 |add the gaps in | 000008f0 74 68 65 20 66 69 6c 65 20 74 6f 0d 63 6f 6d 70 |the file to.comp| 00000900 6c 65 74 65 20 69 74 2e 0d 0d 52 69 63 68 61 72 |lete it...Richar| 00000910 64 20 44 69 6d 6f 6e 64 0d 0d 2a 2a 2a 2a 2a 2a |d Dimond..******| 00000920 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a |****************| * 00000960 2a 2a 2a 2a 0d 0d |****..| 00000966
F/Rescue1.m0
F/Rescue1.m1
F/Rescue1.m2
F/Rescue1.m4
F/Rescue1.m5
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