Home » Archimedes archive » Micro User » MU 1992-09.adf » ArcFSExtra » Documents/Re-Arrange
Documents/Re-Arrange
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 » Micro User » MU 1992-09.adf » ArcFSExtra |
| Filename: | Documents/Re-Arrange |
| Read OK: | ✔ |
| File size: | 0665 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
Duplicates
There is 1 duplicate copy of this file in the archive:
- Archimedes archive » Micro User » MU 1992-08.adf » ArcFSExtra » Documents/Re-Arrange
- Archimedes archive » Micro User » MU 1992-09.adf » ArcFSExtra » Documents/Re-Arrange
File contents
ArcFS 0.50/2.00 Documentation ----------------------------- Compact ------- When files are deleted or over-written in an archive, it is necessary to recover the space left by these files so that the archive can be made as small as possible. This is done by compacting the archive. In order to compact an archive ArcFS needs a buffer to shift blocks of data about. The larger the buffer, the faster the compact operation will be, particularly if the archive is on a floppy disk. This buffer is set by the command '*ArcFSBuffer <size in K>' and has a default size of 56K. AutoCompact ----------- By default, auto compact is switched on. This will automatically compact an archive following a write operation. Since this can make write operations take a lot longer, it is suggested that AutoCompact is switched off whilst a lot of work is carried out on an archive. The archive should be manually compacted at intervals during work on the archive and again when the work is complete. AutoCompact should then be switched on again. Making room for more headers ---------------------------- Since an archive contains a set of file headers (the catalogue) followed by data, the data may need to be moved in order that more headers can be accomodated. The number of gaps created at once is set by '*ArcFSGaps <no. of gaps>' (default 10). If you are copying a large number of objects into an archive, then you can speed the process up by making the number of gaps equal to no. files + 2 * no. directories to copy. After copying the files change the no. gaps back to 10. The buffer used to move the data is the same as that used by compact.
00000000 41 72 63 46 53 20 30 2e 35 30 2f 32 2e 30 30 20 |ArcFS 0.50/2.00 | 00000010 44 6f 63 75 6d 65 6e 74 61 74 69 6f 6e 0a 2d 2d |Documentation.--| 00000020 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00000030 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a 43 6f 6d |-----------..Com| 00000040 70 61 63 74 0a 2d 2d 2d 2d 2d 2d 2d 0a 0a 57 68 |pact.-------..Wh| 00000050 65 6e 20 66 69 6c 65 73 20 61 72 65 20 64 65 6c |en files are del| 00000060 65 74 65 64 20 6f 72 20 6f 76 65 72 2d 77 72 69 |eted or over-wri| 00000070 74 74 65 6e 20 69 6e 20 61 6e 20 61 72 63 68 69 |tten in an archi| 00000080 76 65 2c 20 69 74 20 69 73 20 6e 65 63 65 73 73 |ve, it is necess| 00000090 61 72 79 20 74 6f 0a 72 65 63 6f 76 65 72 20 74 |ary to.recover t| 000000a0 68 65 20 73 70 61 63 65 20 6c 65 66 74 20 62 79 |he space left by| 000000b0 20 74 68 65 73 65 20 66 69 6c 65 73 20 73 6f 20 | these files so | 000000c0 74 68 61 74 20 74 68 65 20 61 72 63 68 69 76 65 |that the archive| 000000d0 20 63 61 6e 20 62 65 20 6d 61 64 65 20 61 73 0a | can be made as.| 000000e0 73 6d 61 6c 6c 20 61 73 20 70 6f 73 73 69 62 6c |small as possibl| 000000f0 65 2e 20 54 68 69 73 20 69 73 20 64 6f 6e 65 20 |e. This is done | 00000100 62 79 20 63 6f 6d 70 61 63 74 69 6e 67 20 74 68 |by compacting th| 00000110 65 20 61 72 63 68 69 76 65 2e 0a 0a 49 6e 20 6f |e archive...In o| 00000120 72 64 65 72 20 74 6f 20 63 6f 6d 70 61 63 74 20 |rder to compact | 00000130 61 6e 20 61 72 63 68 69 76 65 20 41 72 63 46 53 |an archive ArcFS| 00000140 20 6e 65 65 64 73 20 61 20 62 75 66 66 65 72 20 | needs a buffer | 00000150 74 6f 20 73 68 69 66 74 20 62 6c 6f 63 6b 73 20 |to shift blocks | 00000160 6f 66 20 64 61 74 61 0a 61 62 6f 75 74 2e 20 54 |of data.about. T| 00000170 68 65 20 6c 61 72 67 65 72 20 74 68 65 20 62 75 |he larger the bu| 00000180 66 66 65 72 2c 20 74 68 65 20 66 61 73 74 65 72 |ffer, the faster| 00000190 20 74 68 65 20 63 6f 6d 70 61 63 74 20 6f 70 65 | the compact ope| 000001a0 72 61 74 69 6f 6e 20 77 69 6c 6c 20 62 65 2c 0a |ration will be,.| 000001b0 70 61 72 74 69 63 75 6c 61 72 6c 79 20 69 66 20 |particularly if | 000001c0 74 68 65 20 61 72 63 68 69 76 65 20 69 73 20 6f |the archive is o| 000001d0 6e 20 61 20 66 6c 6f 70 70 79 20 64 69 73 6b 2e |n a floppy disk.| 000001e0 20 54 68 69 73 20 62 75 66 66 65 72 20 69 73 20 | This buffer is | 000001f0 73 65 74 20 62 79 20 74 68 65 0a 63 6f 6d 6d 61 |set by the.comma| 00000200 6e 64 20 27 2a 41 72 63 46 53 42 75 66 66 65 72 |nd '*ArcFSBuffer| 00000210 20 3c 73 69 7a 65 20 69 6e 20 4b 3e 27 20 61 6e | <size in K>' an| 00000220 64 20 68 61 73 20 61 20 64 65 66 61 75 6c 74 20 |d has a default | 00000230 73 69 7a 65 20 6f 66 20 35 36 4b 2e 0a 0a 41 75 |size of 56K...Au| 00000240 74 6f 43 6f 6d 70 61 63 74 0a 2d 2d 2d 2d 2d 2d |toCompact.------| 00000250 2d 2d 2d 2d 2d 0a 0a 42 79 20 64 65 66 61 75 6c |-----..By defaul| 00000260 74 2c 20 61 75 74 6f 20 63 6f 6d 70 61 63 74 20 |t, auto compact | 00000270 69 73 20 73 77 69 74 63 68 65 64 20 6f 6e 2e 20 |is switched on. | 00000280 54 68 69 73 20 77 69 6c 6c 20 61 75 74 6f 6d 61 |This will automa| 00000290 74 69 63 61 6c 6c 79 20 63 6f 6d 70 61 63 74 20 |tically compact | 000002a0 61 6e 0a 61 72 63 68 69 76 65 20 66 6f 6c 6c 6f |an.archive follo| 000002b0 77 69 6e 67 20 61 20 77 72 69 74 65 20 6f 70 65 |wing a write ope| 000002c0 72 61 74 69 6f 6e 2e 20 53 69 6e 63 65 20 74 68 |ration. Since th| 000002d0 69 73 20 63 61 6e 20 6d 61 6b 65 20 77 72 69 74 |is can make writ| 000002e0 65 20 6f 70 65 72 61 74 69 6f 6e 73 0a 74 61 6b |e operations.tak| 000002f0 65 20 61 20 6c 6f 74 20 6c 6f 6e 67 65 72 2c 20 |e a lot longer, | 00000300 69 74 20 69 73 20 73 75 67 67 65 73 74 65 64 20 |it is suggested | 00000310 74 68 61 74 20 41 75 74 6f 43 6f 6d 70 61 63 74 |that AutoCompact| 00000320 20 69 73 20 73 77 69 74 63 68 65 64 20 6f 66 66 | is switched off| 00000330 20 77 68 69 6c 73 74 20 61 0a 6c 6f 74 20 6f 66 | whilst a.lot of| 00000340 20 77 6f 72 6b 20 69 73 20 63 61 72 72 69 65 64 | work is carried| 00000350 20 6f 75 74 20 6f 6e 20 61 6e 20 61 72 63 68 69 | out on an archi| 00000360 76 65 2e 20 54 68 65 20 61 72 63 68 69 76 65 20 |ve. The archive | 00000370 73 68 6f 75 6c 64 20 62 65 20 6d 61 6e 75 61 6c |should be manual| 00000380 6c 79 0a 63 6f 6d 70 61 63 74 65 64 20 61 74 20 |ly.compacted at | 00000390 69 6e 74 65 72 76 61 6c 73 20 64 75 72 69 6e 67 |intervals during| 000003a0 20 77 6f 72 6b 20 6f 6e 20 74 68 65 20 61 72 63 | work on the arc| 000003b0 68 69 76 65 20 61 6e 64 20 61 67 61 69 6e 20 77 |hive and again w| 000003c0 68 65 6e 20 74 68 65 20 77 6f 72 6b 20 69 73 0a |hen the work is.| 000003d0 63 6f 6d 70 6c 65 74 65 2e 20 41 75 74 6f 43 6f |complete. AutoCo| 000003e0 6d 70 61 63 74 20 73 68 6f 75 6c 64 20 74 68 65 |mpact should the| 000003f0 6e 20 62 65 20 73 77 69 74 63 68 65 64 20 6f 6e |n be switched on| 00000400 20 61 67 61 69 6e 2e 0a 0a 4d 61 6b 69 6e 67 20 | again...Making | 00000410 72 6f 6f 6d 20 66 6f 72 20 6d 6f 72 65 20 68 65 |room for more he| 00000420 61 64 65 72 73 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |aders.----------| 00000430 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00000440 2d 2d 0a 0a 53 69 6e 63 65 20 61 6e 20 61 72 63 |--..Since an arc| 00000450 68 69 76 65 20 63 6f 6e 74 61 69 6e 73 20 61 20 |hive contains a | 00000460 73 65 74 20 6f 66 20 66 69 6c 65 20 68 65 61 64 |set of file head| 00000470 65 72 73 20 28 74 68 65 20 63 61 74 61 6c 6f 67 |ers (the catalog| 00000480 75 65 29 20 66 6f 6c 6c 6f 77 65 64 20 62 79 0a |ue) followed by.| 00000490 64 61 74 61 2c 20 74 68 65 20 64 61 74 61 20 6d |data, the data m| 000004a0 61 79 20 6e 65 65 64 20 74 6f 20 62 65 20 6d 6f |ay need to be mo| 000004b0 76 65 64 20 69 6e 20 6f 72 64 65 72 20 74 68 61 |ved in order tha| 000004c0 74 20 6d 6f 72 65 20 68 65 61 64 65 72 73 20 63 |t more headers c| 000004d0 61 6e 20 62 65 0a 61 63 63 6f 6d 6f 64 61 74 65 |an be.accomodate| 000004e0 64 2e 20 54 68 65 20 6e 75 6d 62 65 72 20 6f 66 |d. The number of| 000004f0 20 67 61 70 73 20 63 72 65 61 74 65 64 20 61 74 | gaps created at| 00000500 20 6f 6e 63 65 20 69 73 20 73 65 74 20 62 79 20 | once is set by | 00000510 27 2a 41 72 63 46 53 47 61 70 73 20 3c 6e 6f 2e |'*ArcFSGaps <no.| 00000520 0a 6f 66 20 67 61 70 73 3e 27 20 28 64 65 66 61 |.of gaps>' (defa| 00000530 75 6c 74 20 31 30 29 2e 20 49 66 20 79 6f 75 20 |ult 10). If you | 00000540 61 72 65 20 63 6f 70 79 69 6e 67 20 61 20 6c 61 |are copying a la| 00000550 72 67 65 20 6e 75 6d 62 65 72 20 6f 66 20 6f 62 |rge number of ob| 00000560 6a 65 63 74 73 20 69 6e 74 6f 20 61 6e 0a 61 72 |jects into an.ar| 00000570 63 68 69 76 65 2c 20 74 68 65 6e 20 79 6f 75 20 |chive, then you | 00000580 63 61 6e 20 73 70 65 65 64 20 74 68 65 20 70 72 |can speed the pr| 00000590 6f 63 65 73 73 20 75 70 20 62 79 20 6d 61 6b 69 |ocess up by maki| 000005a0 6e 67 20 74 68 65 20 6e 75 6d 62 65 72 20 6f 66 |ng the number of| 000005b0 20 67 61 70 73 0a 65 71 75 61 6c 20 74 6f 20 6e | gaps.equal to n| 000005c0 6f 2e 20 66 69 6c 65 73 20 2b 20 32 20 2a 20 6e |o. files + 2 * n| 000005d0 6f 2e 20 64 69 72 65 63 74 6f 72 69 65 73 20 74 |o. directories t| 000005e0 6f 20 63 6f 70 79 2e 20 41 66 74 65 72 20 63 6f |o copy. After co| 000005f0 70 79 69 6e 67 20 74 68 65 20 66 69 6c 65 73 0a |pying the files.| 00000600 63 68 61 6e 67 65 20 74 68 65 20 6e 6f 2e 20 67 |change the no. g| 00000610 61 70 73 20 62 61 63 6b 20 74 6f 20 31 30 2e 20 |aps back to 10. | 00000620 54 68 65 20 62 75 66 66 65 72 20 75 73 65 64 20 |The buffer used | 00000630 74 6f 20 6d 6f 76 65 20 74 68 65 20 64 61 74 61 |to move the data| 00000640 20 69 73 20 74 68 65 20 73 61 6d 65 0a 61 73 20 | is the same.as | 00000650 74 68 61 74 20 75 73 65 64 20 62 79 20 63 6f 6d |that used by com| 00000660 70 61 63 74 2e |pact.| 00000665
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