Home » Archimedes archive » Acorn User » AU 1995-07.adf » !Regulars_Regulars » StarInfo/Salt/!BlockSize/!Help

StarInfo/Salt/!BlockSize/!Help

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 » Acorn User » AU 1995-07.adf » !Regulars_Regulars
Filename: StarInfo/Salt/!BlockSize/!Help
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File size: 077A bytes
Load address: 0000
Exec address: 0000
File contents
 ���������
 BlockSize 1.10
 ���������

 Written by Darren Salt


 Supports interactive help


 This is a small utility which counts the disk space used by files. All you
need to do is to drag one or more files or directories to the BlockSize icon.
 A window looking like that for a normal Filer count operation will be
opened; indeed it works like a Filer action window.
 It has its own menu, with a 'Faster' option at the top (working much as its
Filer equivalent), and a list of numbers below. These numbers represent
various sector sizes or allocation units - initially the sector size is
selected (and is shown in red to indicate that it is the sector size), so for
a normal ADFS disk (800K or 1600K), the selected size will be 1K.
 Selecting a different size causes the display to be updated immediately
(BlockSize keeps a count for each possible size).

 BlockSize can handle archives, with the following restrictions: if you drag
the archive to BlockSize, or if it encounters an archive, it is treated as a
file; the archive contents, if dragged to BlockSize, are treated as if not
archived.
 IMPORTANT: Directories normally occupy 2K each, but in ArcFS archives are
stored with length = -1, and in Spark archives with length &29*(number of
entries)+2. On DOS-format disks, the size is a multiple of 512 bytes (16
bytes per entry). Therefore BlockSize quite reasonably assumes that all
directories require 2K.

 Note that with some filing systems, the sector size may be different from
the allocation unit. If, for example, you have a hard disk formatted with a
sector size of 512 bytes, but has been initialised with an allocation unit of
1K, you will need to select '1K' from the count menu in order to get an
accurate result. [The 4K allocation unit is WASTEFUL!]

 Statistics for !BlockSize:
 Alloc. unit   64       128   256  512     1K   2K   4K
 Disk space    26+3/8K   26�K  27K  28�K  32K  34K  52K
00000000  20 98 98 98 98 98 98 98  98 98 0a 20 42 6c 6f 63  | .......... Bloc|
00000010  6b 53 69 7a 65 20 31 2e  31 30 0a 20 98 98 98 98  |kSize 1.10. ....|
00000020  98 98 98 98 98 0a 0a 20  57 72 69 74 74 65 6e 20  |....... Written |
00000030  62 79 20 44 61 72 72 65  6e 20 53 61 6c 74 0a 0a  |by Darren Salt..|
00000040  0a 20 53 75 70 70 6f 72  74 73 20 69 6e 74 65 72  |. Supports inter|
00000050  61 63 74 69 76 65 20 68  65 6c 70 0a 0a 0a 20 54  |active help... T|
00000060  68 69 73 20 69 73 20 61  20 73 6d 61 6c 6c 20 75  |his is a small u|
00000070  74 69 6c 69 74 79 20 77  68 69 63 68 20 63 6f 75  |tility which cou|
00000080  6e 74 73 20 74 68 65 20  64 69 73 6b 20 73 70 61  |nts the disk spa|
00000090  63 65 20 75 73 65 64 20  62 79 20 66 69 6c 65 73  |ce used by files|
000000a0  2e 20 41 6c 6c 20 79 6f  75 0a 6e 65 65 64 20 74  |. All you.need t|
000000b0  6f 20 64 6f 20 69 73 20  74 6f 20 64 72 61 67 20  |o do is to drag |
000000c0  6f 6e 65 20 6f 72 20 6d  6f 72 65 20 66 69 6c 65  |one or more file|
000000d0  73 20 6f 72 20 64 69 72  65 63 74 6f 72 69 65 73  |s or directories|
000000e0  20 74 6f 20 74 68 65 20  42 6c 6f 63 6b 53 69 7a  | to the BlockSiz|
000000f0  65 20 69 63 6f 6e 2e 0a  20 41 20 77 69 6e 64 6f  |e icon.. A windo|
00000100  77 20 6c 6f 6f 6b 69 6e  67 20 6c 69 6b 65 20 74  |w looking like t|
00000110  68 61 74 20 66 6f 72 20  61 20 6e 6f 72 6d 61 6c  |hat for a normal|
00000120  20 46 69 6c 65 72 20 63  6f 75 6e 74 20 6f 70 65  | Filer count ope|
00000130  72 61 74 69 6f 6e 20 77  69 6c 6c 20 62 65 0a 6f  |ration will be.o|
00000140  70 65 6e 65 64 3b 20 69  6e 64 65 65 64 20 69 74  |pened; indeed it|
00000150  20 77 6f 72 6b 73 20 6c  69 6b 65 20 61 20 46 69  | works like a Fi|
00000160  6c 65 72 20 61 63 74 69  6f 6e 20 77 69 6e 64 6f  |ler action windo|
00000170  77 2e 0a 20 49 74 20 68  61 73 20 69 74 73 20 6f  |w.. It has its o|
00000180  77 6e 20 6d 65 6e 75 2c  20 77 69 74 68 20 61 20  |wn menu, with a |
00000190  27 46 61 73 74 65 72 27  20 6f 70 74 69 6f 6e 20  |'Faster' option |
000001a0  61 74 20 74 68 65 20 74  6f 70 20 28 77 6f 72 6b  |at the top (work|
000001b0  69 6e 67 20 6d 75 63 68  20 61 73 20 69 74 73 0a  |ing much as its.|
000001c0  46 69 6c 65 72 20 65 71  75 69 76 61 6c 65 6e 74  |Filer equivalent|
000001d0  29 2c 20 61 6e 64 20 61  20 6c 69 73 74 20 6f 66  |), and a list of|
000001e0  20 6e 75 6d 62 65 72 73  20 62 65 6c 6f 77 2e 20  | numbers below. |
000001f0  54 68 65 73 65 20 6e 75  6d 62 65 72 73 20 72 65  |These numbers re|
00000200  70 72 65 73 65 6e 74 0a  76 61 72 69 6f 75 73 20  |present.various |
00000210  73 65 63 74 6f 72 20 73  69 7a 65 73 20 6f 72 20  |sector sizes or |
00000220  61 6c 6c 6f 63 61 74 69  6f 6e 20 75 6e 69 74 73  |allocation units|
00000230  20 2d 20 69 6e 69 74 69  61 6c 6c 79 20 74 68 65  | - initially the|
00000240  20 73 65 63 74 6f 72 20  73 69 7a 65 20 69 73 0a  | sector size is.|
00000250  73 65 6c 65 63 74 65 64  20 28 61 6e 64 20 69 73  |selected (and is|
00000260  20 73 68 6f 77 6e 20 69  6e 20 72 65 64 20 74 6f  | shown in red to|
00000270  20 69 6e 64 69 63 61 74  65 20 74 68 61 74 20 69  | indicate that i|
00000280  74 20 69 73 20 74 68 65  20 73 65 63 74 6f 72 20  |t is the sector |
00000290  73 69 7a 65 29 2c 20 73  6f 20 66 6f 72 0a 61 20  |size), so for.a |
000002a0  6e 6f 72 6d 61 6c 20 41  44 46 53 20 64 69 73 6b  |normal ADFS disk|
000002b0  20 28 38 30 30 4b 20 6f  72 20 31 36 30 30 4b 29  | (800K or 1600K)|
000002c0  2c 20 74 68 65 20 73 65  6c 65 63 74 65 64 20 73  |, the selected s|
000002d0  69 7a 65 20 77 69 6c 6c  20 62 65 20 31 4b 2e 0a  |ize will be 1K..|
000002e0  20 53 65 6c 65 63 74 69  6e 67 20 61 20 64 69 66  | Selecting a dif|
000002f0  66 65 72 65 6e 74 20 73  69 7a 65 20 63 61 75 73  |ferent size caus|
00000300  65 73 20 74 68 65 20 64  69 73 70 6c 61 79 20 74  |es the display t|
00000310  6f 20 62 65 20 75 70 64  61 74 65 64 20 69 6d 6d  |o be updated imm|
00000320  65 64 69 61 74 65 6c 79  0a 28 42 6c 6f 63 6b 53  |ediately.(BlockS|
00000330  69 7a 65 20 6b 65 65 70  73 20 61 20 63 6f 75 6e  |ize keeps a coun|
00000340  74 20 66 6f 72 20 65 61  63 68 20 70 6f 73 73 69  |t for each possi|
00000350  62 6c 65 20 73 69 7a 65  29 2e 0a 0a 20 42 6c 6f  |ble size)... Blo|
00000360  63 6b 53 69 7a 65 20 63  61 6e 20 68 61 6e 64 6c  |ckSize can handl|
00000370  65 20 61 72 63 68 69 76  65 73 2c 20 77 69 74 68  |e archives, with|
00000380  20 74 68 65 20 66 6f 6c  6c 6f 77 69 6e 67 20 72  | the following r|
00000390  65 73 74 72 69 63 74 69  6f 6e 73 3a 20 69 66 20  |estrictions: if |
000003a0  79 6f 75 20 64 72 61 67  0a 74 68 65 20 61 72 63  |you drag.the arc|
000003b0  68 69 76 65 20 74 6f 20  42 6c 6f 63 6b 53 69 7a  |hive to BlockSiz|
000003c0  65 2c 20 6f 72 20 69 66  20 69 74 20 65 6e 63 6f  |e, or if it enco|
000003d0  75 6e 74 65 72 73 20 61  6e 20 61 72 63 68 69 76  |unters an archiv|
000003e0  65 2c 20 69 74 20 69 73  20 74 72 65 61 74 65 64  |e, it is treated|
000003f0  20 61 73 20 61 0a 66 69  6c 65 3b 20 74 68 65 20  | as a.file; the |
00000400  61 72 63 68 69 76 65 20  63 6f 6e 74 65 6e 74 73  |archive contents|
00000410  2c 20 69 66 20 64 72 61  67 67 65 64 20 74 6f 20  |, if dragged to |
00000420  42 6c 6f 63 6b 53 69 7a  65 2c 20 61 72 65 20 74  |BlockSize, are t|
00000430  72 65 61 74 65 64 20 61  73 20 69 66 20 6e 6f 74  |reated as if not|
00000440  0a 61 72 63 68 69 76 65  64 2e 0a 20 49 4d 50 4f  |.archived.. IMPO|
00000450  52 54 41 4e 54 3a 20 44  69 72 65 63 74 6f 72 69  |RTANT: Directori|
00000460  65 73 20 6e 6f 72 6d 61  6c 6c 79 20 6f 63 63 75  |es normally occu|
00000470  70 79 20 32 4b 20 65 61  63 68 2c 20 62 75 74 20  |py 2K each, but |
00000480  69 6e 20 41 72 63 46 53  20 61 72 63 68 69 76 65  |in ArcFS archive|
00000490  73 20 61 72 65 0a 73 74  6f 72 65 64 20 77 69 74  |s are.stored wit|
000004a0  68 20 6c 65 6e 67 74 68  20 3d 20 2d 31 2c 20 61  |h length = -1, a|
000004b0  6e 64 20 69 6e 20 53 70  61 72 6b 20 61 72 63 68  |nd in Spark arch|
000004c0  69 76 65 73 20 77 69 74  68 20 6c 65 6e 67 74 68  |ives with length|
000004d0  20 26 32 39 2a 28 6e 75  6d 62 65 72 20 6f 66 0a  | &29*(number of.|
000004e0  65 6e 74 72 69 65 73 29  2b 32 2e 20 4f 6e 20 44  |entries)+2. On D|
000004f0  4f 53 2d 66 6f 72 6d 61  74 20 64 69 73 6b 73 2c  |OS-format disks,|
00000500  20 74 68 65 20 73 69 7a  65 20 69 73 20 61 20 6d  | the size is a m|
00000510  75 6c 74 69 70 6c 65 20  6f 66 20 35 31 32 20 62  |ultiple of 512 b|
00000520  79 74 65 73 20 28 31 36  0a 62 79 74 65 73 20 70  |ytes (16.bytes p|
00000530  65 72 20 65 6e 74 72 79  29 2e 20 54 68 65 72 65  |er entry). There|
00000540  66 6f 72 65 20 42 6c 6f  63 6b 53 69 7a 65 20 71  |fore BlockSize q|
00000550  75 69 74 65 20 72 65 61  73 6f 6e 61 62 6c 79 20  |uite reasonably |
00000560  61 73 73 75 6d 65 73 20  74 68 61 74 20 61 6c 6c  |assumes that all|
00000570  0a 64 69 72 65 63 74 6f  72 69 65 73 20 72 65 71  |.directories req|
00000580  75 69 72 65 20 32 4b 2e  0a 0a 20 4e 6f 74 65 20  |uire 2K... Note |
00000590  74 68 61 74 20 77 69 74  68 20 73 6f 6d 65 20 66  |that with some f|
000005a0  69 6c 69 6e 67 20 73 79  73 74 65 6d 73 2c 20 74  |iling systems, t|
000005b0  68 65 20 73 65 63 74 6f  72 20 73 69 7a 65 20 6d  |he sector size m|
000005c0  61 79 20 62 65 20 64 69  66 66 65 72 65 6e 74 20  |ay be different |
000005d0  66 72 6f 6d 0a 74 68 65  20 61 6c 6c 6f 63 61 74  |from.the allocat|
000005e0  69 6f 6e 20 75 6e 69 74  2e 20 49 66 2c 20 66 6f  |ion unit. If, fo|
000005f0  72 20 65 78 61 6d 70 6c  65 2c 20 79 6f 75 20 68  |r example, you h|
00000600  61 76 65 20 61 20 68 61  72 64 20 64 69 73 6b 20  |ave a hard disk |
00000610  66 6f 72 6d 61 74 74 65  64 20 77 69 74 68 20 61  |formatted with a|
00000620  0a 73 65 63 74 6f 72 20  73 69 7a 65 20 6f 66 20  |.sector size of |
00000630  35 31 32 20 62 79 74 65  73 2c 20 62 75 74 20 68  |512 bytes, but h|
00000640  61 73 20 62 65 65 6e 20  69 6e 69 74 69 61 6c 69  |as been initiali|
00000650  73 65 64 20 77 69 74 68  20 61 6e 20 61 6c 6c 6f  |sed with an allo|
00000660  63 61 74 69 6f 6e 20 75  6e 69 74 20 6f 66 0a 31  |cation unit of.1|
00000670  4b 2c 20 79 6f 75 20 77  69 6c 6c 20 6e 65 65 64  |K, you will need|
00000680  20 74 6f 20 73 65 6c 65  63 74 20 27 31 4b 27 20  | to select '1K' |
00000690  66 72 6f 6d 20 74 68 65  20 63 6f 75 6e 74 20 6d  |from the count m|
000006a0  65 6e 75 20 69 6e 20 6f  72 64 65 72 20 74 6f 20  |enu in order to |
000006b0  67 65 74 20 61 6e 0a 61  63 63 75 72 61 74 65 20  |get an.accurate |
000006c0  72 65 73 75 6c 74 2e 20  5b 54 68 65 20 34 4b 20  |result. [The 4K |
000006d0  61 6c 6c 6f 63 61 74 69  6f 6e 20 75 6e 69 74 20  |allocation unit |
000006e0  69 73 20 57 41 53 54 45  46 55 4c 21 5d 0a 0a 20  |is WASTEFUL!].. |
000006f0  53 74 61 74 69 73 74 69  63 73 20 66 6f 72 20 21  |Statistics for !|
00000700  42 6c 6f 63 6b 53 69 7a  65 3a 0a 20 41 6c 6c 6f  |BlockSize:. Allo|
00000710  63 2e 20 75 6e 69 74 20  20 20 36 34 20 20 20 20  |c. unit   64    |
00000720  20 20 20 31 32 38 20 20  20 32 35 36 20 20 35 31  |   128   256  51|
00000730  32 20 20 20 20 20 31 4b  20 20 20 32 4b 20 20 20  |2     1K   2K   |
00000740  34 4b 0a 20 44 69 73 6b  20 73 70 61 63 65 20 20  |4K. Disk space  |
00000750  20 20 32 36 2b 33 2f 38  4b 20 20 20 32 36 bd 4b  |  26+3/8K   26.K|
00000760  20 20 32 37 4b 20 20 32  38 bd 4b 20 20 33 32 4b  |  27K  28.K  32K|
00000770  20 20 33 34 4b 20 20 35  32 4b                    |  34K  52K|
0000077a