Home » Personal collection » Acorn hard disk » apps » web » ReadMeDocs/ChgFSI_Fix

ReadMeDocs/ChgFSI_Fix

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 hard disk » apps » web
Filename: ReadMeDocs/ChgFSI_Fix
Read OK:
File size: 0541 bytes
Load address: 0000
Exec address: 0000
Duplicates

There is 1 duplicate copy of this file in the archive:

File contents
Fix for ChangeFSI
=================

I finally got fed up with "GIF file without , in right place" errors
from ChangeFSI (0.95, 1.01 & 1.13S all exhibit this annoying message).
I have devised a simple fix for it.

This mainly affects web browsers which are downloading all manner of
GIF format files from other web sites created with a variety of
packages, although anything reading GIF with ChangeFSI might be
affected.

-----8<----- instructions start here ------>8-------

Find the place in !ChangeFSI.ChangeFSI which has the following
code: (search for "GIF file without")

ChangeFSI 0.95 or ChangeFSI 1.01:
I%=BGET#c%:IFI%<>ASC"," ERROR 42,"GIF file without , in right place"

ChangeFSI 1.13S:
I%=BGET#c%:IF I%=ASC"!" THEN
IF BGET#c%
GIFgcssz=BGET#c%:PTR#c%=PTR#c%+GIFgcesz+1:I%=BGET#c%
ENDIF


For ChangeFSI 0.95 and 1.01:
   remove the "I%=BGET#c%:" part of the line and add the following code
   BEFORE that line.

For ChangeFSI 1.13S:
   remove all the lines listed above and replace then with the following
   code.

REPEAT:I%=BGET#c%:IFI%=ASC"!"THEN
IFBGET#c%:REPEAT:GIFgcesz=BGET#c%:PTR#c%=PTR#c%+GIFgcesz:UNTIL GIFgcesz=0
ENDIF:UNTIL I%<>ASC"!"

-- 
Stewart Brodie
Dept. Electronics & Computer Science, Southampton University, UK.
http://www.dsse.ecs.soton.ac.uk/~snb94r/
http://delenn.ecs.soton.ac.uk/   <-- running on my Risc PC

00000000  46 69 78 20 66 6f 72 20  43 68 61 6e 67 65 46 53  |Fix for ChangeFS|
00000010  49 0a 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |I.==============|
00000020  3d 3d 3d 0a 0a 49 20 66  69 6e 61 6c 6c 79 20 67  |===..I finally g|
00000030  6f 74 20 66 65 64 20 75  70 20 77 69 74 68 20 22  |ot fed up with "|
00000040  47 49 46 20 66 69 6c 65  20 77 69 74 68 6f 75 74  |GIF file without|
00000050  20 2c 20 69 6e 20 72 69  67 68 74 20 70 6c 61 63  | , in right plac|
00000060  65 22 20 65 72 72 6f 72  73 0a 66 72 6f 6d 20 43  |e" errors.from C|
00000070  68 61 6e 67 65 46 53 49  20 28 30 2e 39 35 2c 20  |hangeFSI (0.95, |
00000080  31 2e 30 31 20 26 20 31  2e 31 33 53 20 61 6c 6c  |1.01 & 1.13S all|
00000090  20 65 78 68 69 62 69 74  20 74 68 69 73 20 61 6e  | exhibit this an|
000000a0  6e 6f 79 69 6e 67 20 6d  65 73 73 61 67 65 29 2e  |noying message).|
000000b0  0a 49 20 68 61 76 65 20  64 65 76 69 73 65 64 20  |.I have devised |
000000c0  61 20 73 69 6d 70 6c 65  20 66 69 78 20 66 6f 72  |a simple fix for|
000000d0  20 69 74 2e 0a 0a 54 68  69 73 20 6d 61 69 6e 6c  | it...This mainl|
000000e0  79 20 61 66 66 65 63 74  73 20 77 65 62 20 62 72  |y affects web br|
000000f0  6f 77 73 65 72 73 20 77  68 69 63 68 20 61 72 65  |owsers which are|
00000100  20 64 6f 77 6e 6c 6f 61  64 69 6e 67 20 61 6c 6c  | downloading all|
00000110  20 6d 61 6e 6e 65 72 20  6f 66 0a 47 49 46 20 66  | manner of.GIF f|
00000120  6f 72 6d 61 74 20 66 69  6c 65 73 20 66 72 6f 6d  |ormat files from|
00000130  20 6f 74 68 65 72 20 77  65 62 20 73 69 74 65 73  | other web sites|
00000140  20 63 72 65 61 74 65 64  20 77 69 74 68 20 61 20  | created with a |
00000150  76 61 72 69 65 74 79 20  6f 66 0a 70 61 63 6b 61  |variety of.packa|
00000160  67 65 73 2c 20 61 6c 74  68 6f 75 67 68 20 61 6e  |ges, although an|
00000170  79 74 68 69 6e 67 20 72  65 61 64 69 6e 67 20 47  |ything reading G|
00000180  49 46 20 77 69 74 68 20  43 68 61 6e 67 65 46 53  |IF with ChangeFS|
00000190  49 20 6d 69 67 68 74 20  62 65 0a 61 66 66 65 63  |I might be.affec|
000001a0  74 65 64 2e 0a 0a 2d 2d  2d 2d 2d 38 3c 2d 2d 2d  |ted...-----8<---|
000001b0  2d 2d 20 69 6e 73 74 72  75 63 74 69 6f 6e 73 20  |-- instructions |
000001c0  73 74 61 72 74 20 68 65  72 65 20 2d 2d 2d 2d 2d  |start here -----|
000001d0  2d 3e 38 2d 2d 2d 2d 2d  2d 2d 0a 0a 46 69 6e 64  |->8-------..Find|
000001e0  20 74 68 65 20 70 6c 61  63 65 20 69 6e 20 21 43  | the place in !C|
000001f0  68 61 6e 67 65 46 53 49  2e 43 68 61 6e 67 65 46  |hangeFSI.ChangeF|
00000200  53 49 20 77 68 69 63 68  20 68 61 73 20 74 68 65  |SI which has the|
00000210  20 66 6f 6c 6c 6f 77 69  6e 67 0a 63 6f 64 65 3a  | following.code:|
00000220  20 28 73 65 61 72 63 68  20 66 6f 72 20 22 47 49  | (search for "GI|
00000230  46 20 66 69 6c 65 20 77  69 74 68 6f 75 74 22 29  |F file without")|
00000240  0a 0a 43 68 61 6e 67 65  46 53 49 20 30 2e 39 35  |..ChangeFSI 0.95|
00000250  20 6f 72 20 43 68 61 6e  67 65 46 53 49 20 31 2e  | or ChangeFSI 1.|
00000260  30 31 3a 0a 49 25 3d 42  47 45 54 23 63 25 3a 49  |01:.I%=BGET#c%:I|
00000270  46 49 25 3c 3e 41 53 43  22 2c 22 20 45 52 52 4f  |FI%<>ASC"," ERRO|
00000280  52 20 34 32 2c 22 47 49  46 20 66 69 6c 65 20 77  |R 42,"GIF file w|
00000290  69 74 68 6f 75 74 20 2c  20 69 6e 20 72 69 67 68  |ithout , in righ|
000002a0  74 20 70 6c 61 63 65 22  0a 0a 43 68 61 6e 67 65  |t place"..Change|
000002b0  46 53 49 20 31 2e 31 33  53 3a 0a 49 25 3d 42 47  |FSI 1.13S:.I%=BG|
000002c0  45 54 23 63 25 3a 49 46  20 49 25 3d 41 53 43 22  |ET#c%:IF I%=ASC"|
000002d0  21 22 20 54 48 45 4e 0a  49 46 20 42 47 45 54 23  |!" THEN.IF BGET#|
000002e0  63 25 0a 47 49 46 67 63  73 73 7a 3d 42 47 45 54  |c%.GIFgcssz=BGET|
000002f0  23 63 25 3a 50 54 52 23  63 25 3d 50 54 52 23 63  |#c%:PTR#c%=PTR#c|
00000300  25 2b 47 49 46 67 63 65  73 7a 2b 31 3a 49 25 3d  |%+GIFgcesz+1:I%=|
00000310  42 47 45 54 23 63 25 0a  45 4e 44 49 46 0a 0a 0a  |BGET#c%.ENDIF...|
00000320  46 6f 72 20 43 68 61 6e  67 65 46 53 49 20 30 2e  |For ChangeFSI 0.|
00000330  39 35 20 61 6e 64 20 31  2e 30 31 3a 0a 20 20 20  |95 and 1.01:.   |
00000340  72 65 6d 6f 76 65 20 74  68 65 20 22 49 25 3d 42  |remove the "I%=B|
00000350  47 45 54 23 63 25 3a 22  20 70 61 72 74 20 6f 66  |GET#c%:" part of|
00000360  20 74 68 65 20 6c 69 6e  65 20 61 6e 64 20 61 64  | the line and ad|
00000370  64 20 74 68 65 20 66 6f  6c 6c 6f 77 69 6e 67 20  |d the following |
00000380  63 6f 64 65 0a 20 20 20  42 45 46 4f 52 45 20 74  |code.   BEFORE t|
00000390  68 61 74 20 6c 69 6e 65  2e 0a 0a 46 6f 72 20 43  |hat line...For C|
000003a0  68 61 6e 67 65 46 53 49  20 31 2e 31 33 53 3a 0a  |hangeFSI 1.13S:.|
000003b0  20 20 20 72 65 6d 6f 76  65 20 61 6c 6c 20 74 68  |   remove all th|
000003c0  65 20 6c 69 6e 65 73 20  6c 69 73 74 65 64 20 61  |e lines listed a|
000003d0  62 6f 76 65 20 61 6e 64  20 72 65 70 6c 61 63 65  |bove and replace|
000003e0  20 74 68 65 6e 20 77 69  74 68 20 74 68 65 20 66  | then with the f|
000003f0  6f 6c 6c 6f 77 69 6e 67  0a 20 20 20 63 6f 64 65  |ollowing.   code|
00000400  2e 0a 0a 52 45 50 45 41  54 3a 49 25 3d 42 47 45  |...REPEAT:I%=BGE|
00000410  54 23 63 25 3a 49 46 49  25 3d 41 53 43 22 21 22  |T#c%:IFI%=ASC"!"|
00000420  54 48 45 4e 0a 49 46 42  47 45 54 23 63 25 3a 52  |THEN.IFBGET#c%:R|
00000430  45 50 45 41 54 3a 47 49  46 67 63 65 73 7a 3d 42  |EPEAT:GIFgcesz=B|
00000440  47 45 54 23 63 25 3a 50  54 52 23 63 25 3d 50 54  |GET#c%:PTR#c%=PT|
00000450  52 23 63 25 2b 47 49 46  67 63 65 73 7a 3a 55 4e  |R#c%+GIFgcesz:UN|
00000460  54 49 4c 20 47 49 46 67  63 65 73 7a 3d 30 0a 45  |TIL GIFgcesz=0.E|
00000470  4e 44 49 46 3a 55 4e 54  49 4c 20 49 25 3c 3e 41  |NDIF:UNTIL I%<>A|
00000480  53 43 22 21 22 0a 0a 2d  2d 20 0a 53 74 65 77 61  |SC"!"..-- .Stewa|
00000490  72 74 20 42 72 6f 64 69  65 0a 44 65 70 74 2e 20  |rt Brodie.Dept. |
000004a0  45 6c 65 63 74 72 6f 6e  69 63 73 20 26 20 43 6f  |Electronics & Co|
000004b0  6d 70 75 74 65 72 20 53  63 69 65 6e 63 65 2c 20  |mputer Science, |
000004c0  53 6f 75 74 68 61 6d 70  74 6f 6e 20 55 6e 69 76  |Southampton Univ|
000004d0  65 72 73 69 74 79 2c 20  55 4b 2e 0a 68 74 74 70  |ersity, UK..http|
000004e0  3a 2f 2f 77 77 77 2e 64  73 73 65 2e 65 63 73 2e  |://www.dsse.ecs.|
000004f0  73 6f 74 6f 6e 2e 61 63  2e 75 6b 2f 7e 73 6e 62  |soton.ac.uk/~snb|
00000500  39 34 72 2f 0a 68 74 74  70 3a 2f 2f 64 65 6c 65  |94r/.http://dele|
00000510  6e 6e 2e 65 63 73 2e 73  6f 74 6f 6e 2e 61 63 2e  |nn.ecs.soton.ac.|
00000520  75 6b 2f 20 20 20 3c 2d  2d 20 72 75 6e 6e 69 6e  |uk/   <-- runnin|
00000530  67 20 6f 6e 20 6d 79 20  52 69 73 63 20 50 43 0a  |g on my Risc PC.|
00000540  0a                                                |.|
00000541