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!VKiller/Docs/History

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 1991-07.adf
Filename: !VKiller/Docs/History
Read OK:
File size: 1531 bytes
Load address: FFFFFF43
Exec address: 1D6ABB72
Duplicates

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

File contents
Revision History of VKiller
---------------------------

V2.20 (May 1991)
----------------

* Added check for Vigay Virus.

* Removed the restriction on the number of directory levels - VKiller now
  requires 1K of RMA per directory level (dirs will be skipped if it cannot
  be claimed).

* Speeded up the check for the CeBit virus by loading the !Boot into a
  buffer rather than using a temporary output file.

* "Fix" CeBit module when detected so it can be safely killed.

* Revamped a significant portion of Philip Colmer's code just to make it
  neater and slightly more efficient :-)

* Now only update application icon in dialogue box whilst scanning if it is
  different from what's already displayed.

* Centred the dialogue box the very first time it is opened (but remember its
  position on subsquent closing/re-opening).

* Expanded "...is already innoculated"-style messages to include the
  application name (e.g. !Edit.!Boot instead of just !Boot).

* Removed (for example) "adfs::4." from the beginning of the directory spec
  shown in the "Dir scan" icon of the dialogue box. This is redundant info
  because the Filing System and Device icons already display this.

* Widened the dialogue box to accommodate longer messages.

* Added directory name underneath application icon in the dialogue box.

* Added "Files scanned" and "Dirs scanned" icons to the dialogue box.

V2.10 (April 1991)/V2.11 (April 1991) (neither version publicly released)
-------------------------------------

* Code heavily reworked by Philip Colmer:
  User interface improved and closer to Acorn guidelines.
  Support for Econet & NFS added.
  Logging to a file supported.
  Application icon in dialogue box now uses standard 'APP' icon if not in RMA.
  CeBit virus checked for.
  <Obey$Dir> set to null:$ in the !Run to slow down CeBit infections.

  Thanks to Fil for taking the time out to greatly enhance the code - there's
  no way I could ever have done the network code on my own !

* These versions were not released because I wanted to make some further
  changes on top of Fil's (besides, it took me time to suss his new code !).
  A couple of minor bugs were also ironed out during this process.

V2.00 (March 1991)
------------------

* Received 'new' ArchieVirus from Alan Glover (originally discovered by Hugo
  Fiennes). After extensive disassembly, detection/innoculation code was
  added to VKiller. Some of the ideas of the code emanate from Hugo's
  "Hypothermic" innoculator, but they've been substantially revamped.

* Improved error check if !Boot failed to load when checking for the Extend
  Virus.

* Split documentation into multiple files because this file was starting to
  grow exponentially !

* Revamped the filing system cycling as suggested by Steve Turnbull.

* Widened the dialogue box application icon area to cope with wider 256-colour
  MODE icons.

* Increased WimpSlot for the !RunImage from 64K to 80K because of the larger
  code.

V1.20 (January 1991)
--------------------

* Improved error checking during a scan - an OS_GBPB error will halt the
  scan and display the error in the Status field of the dialogue box.
  An obvious one is "Drive empty", which V1.10 didn't handle at all well !

* Display warning dialogue if user disables the currently selected filing
  system (e.g. by *RMKilling it).

* Display fatal error if no scannable filing systems are detected at any
  time.

* Added an application icon in the dialogue box to reflect the icon of the
  application currently being scanned (suggested by Philip Colmer).

* Applied fixes and improvements to the PROCputdata routine suggested by
  Philip Colmer.

* Managed to narrow the dialogue box despite the new icon. Also subdued the
  background colour from cyan to a more restful light grey.

* Fixed incorrect RamFS handling and added SCSI support (Oak and Lingenuity).

V1.10 (December 1990)
---------------------

* Now multi-tasks with a dialogue box to select options. Code substantially
  reworked to support the WIMP (and it took longer than the guts of V1.00
  did !).

* New patch code to fix Extend Virus 'bug' - now provides safer Wimp_CloseDown
  calls for 50% of the time. Despite this, RMKilling the module is still
  riskier than it was with V1.00.

* !Boot files to be innoculated that are not terminated by a linefeed (<&0A>)
  now have that missing linefeed added prior to innoculation.

* Extend Virus Execution Count is now displayed just before the module is
  deleted from the infected disk or killed from the RMA.

* Only !Boot files that have the Obey (&FEB) filetype can now be innoculated
  against the Extend Virus because this is only filetype that makes any 'sense'
  in the context of the innoculation and is also the filetype used by Extend
  Virus when it modifies the !Boot, even if it was originally a different type.

* If an innoculated !Boot file is being created from scratch and there is
  no !Sprites file in the directory (with the Sprite filetype), then the
  IconSprites <Obey$Dir>.!Sprites line is no longer added.

V1.00 (November 1990)
---------------------

* Written as a plain single-tasking BASIC program which could also innoculate
  !Boot files against the Extend Virus.

* Recurses down directories (to a maximum level of 8) and displays various
  messages in garish red, green or yellow.

* Can remove the Extend Virus RMA module, disk module or infection of an !Boot.
00000000  52 65 76 69 73 69 6f 6e  20 48 69 73 74 6f 72 79  |Revision History|
00000010  20 6f 66 20 56 4b 69 6c  6c 65 72 0a 2d 2d 2d 2d  | of VKiller.----|
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 0a  0a 56 32 2e 32 30 20 28  |-------..V2.20 (|
00000040  4d 61 79 20 31 39 39 31  29 0a 2d 2d 2d 2d 2d 2d  |May 1991).------|
00000050  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 0a 0a 2a 20 41 64  |----------..* Ad|
00000060  64 65 64 20 63 68 65 63  6b 20 66 6f 72 20 56 69  |ded check for Vi|
00000070  67 61 79 20 56 69 72 75  73 2e 0a 0a 2a 20 52 65  |gay Virus...* Re|
00000080  6d 6f 76 65 64 20 74 68  65 20 72 65 73 74 72 69  |moved the restri|
00000090  63 74 69 6f 6e 20 6f 6e  20 74 68 65 20 6e 75 6d  |ction on the num|
000000a0  62 65 72 20 6f 66 20 64  69 72 65 63 74 6f 72 79  |ber of directory|
000000b0  20 6c 65 76 65 6c 73 20  2d 20 56 4b 69 6c 6c 65  | levels - VKille|
000000c0  72 20 6e 6f 77 0a 20 20  72 65 71 75 69 72 65 73  |r now.  requires|
000000d0  20 31 4b 20 6f 66 20 52  4d 41 20 70 65 72 20 64  | 1K of RMA per d|
000000e0  69 72 65 63 74 6f 72 79  20 6c 65 76 65 6c 20 28  |irectory level (|
000000f0  64 69 72 73 20 77 69 6c  6c 20 62 65 20 73 6b 69  |dirs will be ski|
00000100  70 70 65 64 20 69 66 20  69 74 20 63 61 6e 6e 6f  |pped if it canno|
00000110  74 0a 20 20 62 65 20 63  6c 61 69 6d 65 64 29 2e  |t.  be claimed).|
00000120  0a 0a 2a 20 53 70 65 65  64 65 64 20 75 70 20 74  |..* Speeded up t|
00000130  68 65 20 63 68 65 63 6b  20 66 6f 72 20 74 68 65  |he check for the|
00000140  20 43 65 42 69 74 20 76  69 72 75 73 20 62 79 20  | CeBit virus by |
00000150  6c 6f 61 64 69 6e 67 20  74 68 65 20 21 42 6f 6f  |loading the !Boo|
00000160  74 20 69 6e 74 6f 20 61  0a 20 20 62 75 66 66 65  |t into a.  buffe|
00000170  72 20 72 61 74 68 65 72  20 74 68 61 6e 20 75 73  |r rather than us|
00000180  69 6e 67 20 61 20 74 65  6d 70 6f 72 61 72 79 20  |ing a temporary |
00000190  6f 75 74 70 75 74 20 66  69 6c 65 2e 0a 0a 2a 20  |output file...* |
000001a0  22 46 69 78 22 20 43 65  42 69 74 20 6d 6f 64 75  |"Fix" CeBit modu|
000001b0  6c 65 20 77 68 65 6e 20  64 65 74 65 63 74 65 64  |le when detected|
000001c0  20 73 6f 20 69 74 20 63  61 6e 20 62 65 20 73 61  | so it can be sa|
000001d0  66 65 6c 79 20 6b 69 6c  6c 65 64 2e 0a 0a 2a 20  |fely killed...* |
000001e0  52 65 76 61 6d 70 65 64  20 61 20 73 69 67 6e 69  |Revamped a signi|
000001f0  66 69 63 61 6e 74 20 70  6f 72 74 69 6f 6e 20 6f  |ficant portion o|
00000200  66 20 50 68 69 6c 69 70  20 43 6f 6c 6d 65 72 27  |f Philip Colmer'|
00000210  73 20 63 6f 64 65 20 6a  75 73 74 20 74 6f 20 6d  |s code just to m|
00000220  61 6b 65 20 69 74 0a 20  20 6e 65 61 74 65 72 20  |ake it.  neater |
00000230  61 6e 64 20 73 6c 69 67  68 74 6c 79 20 6d 6f 72  |and slightly mor|
00000240  65 20 65 66 66 69 63 69  65 6e 74 20 3a 2d 29 0a  |e efficient :-).|
00000250  0a 2a 20 4e 6f 77 20 6f  6e 6c 79 20 75 70 64 61  |.* Now only upda|
00000260  74 65 20 61 70 70 6c 69  63 61 74 69 6f 6e 20 69  |te application i|
00000270  63 6f 6e 20 69 6e 20 64  69 61 6c 6f 67 75 65 20  |con in dialogue |
00000280  62 6f 78 20 77 68 69 6c  73 74 20 73 63 61 6e 6e  |box whilst scann|
00000290  69 6e 67 20 69 66 20 69  74 20 69 73 0a 20 20 64  |ing if it is.  d|
000002a0  69 66 66 65 72 65 6e 74  20 66 72 6f 6d 20 77 68  |ifferent from wh|
000002b0  61 74 27 73 20 61 6c 72  65 61 64 79 20 64 69 73  |at's already dis|
000002c0  70 6c 61 79 65 64 2e 0a  0a 2a 20 43 65 6e 74 72  |played...* Centr|
000002d0  65 64 20 74 68 65 20 64  69 61 6c 6f 67 75 65 20  |ed the dialogue |
000002e0  62 6f 78 20 74 68 65 20  76 65 72 79 20 66 69 72  |box the very fir|
000002f0  73 74 20 74 69 6d 65 20  69 74 20 69 73 20 6f 70  |st time it is op|
00000300  65 6e 65 64 20 28 62 75  74 20 72 65 6d 65 6d 62  |ened (but rememb|
00000310  65 72 20 69 74 73 0a 20  20 70 6f 73 69 74 69 6f  |er its.  positio|
00000320  6e 20 6f 6e 20 73 75 62  73 71 75 65 6e 74 20 63  |n on subsquent c|
00000330  6c 6f 73 69 6e 67 2f 72  65 2d 6f 70 65 6e 69 6e  |losing/re-openin|
00000340  67 29 2e 0a 0a 2a 20 45  78 70 61 6e 64 65 64 20  |g)...* Expanded |
00000350  22 2e 2e 2e 69 73 20 61  6c 72 65 61 64 79 20 69  |"...is already i|
00000360  6e 6e 6f 63 75 6c 61 74  65 64 22 2d 73 74 79 6c  |nnoculated"-styl|
00000370  65 20 6d 65 73 73 61 67  65 73 20 74 6f 20 69 6e  |e messages to in|
00000380  63 6c 75 64 65 20 74 68  65 0a 20 20 61 70 70 6c  |clude the.  appl|
00000390  69 63 61 74 69 6f 6e 20  6e 61 6d 65 20 28 65 2e  |ication name (e.|
000003a0  67 2e 20 21 45 64 69 74  2e 21 42 6f 6f 74 20 69  |g. !Edit.!Boot i|
000003b0  6e 73 74 65 61 64 20 6f  66 20 6a 75 73 74 20 21  |nstead of just !|
000003c0  42 6f 6f 74 29 2e 0a 0a  2a 20 52 65 6d 6f 76 65  |Boot)...* Remove|
000003d0  64 20 28 66 6f 72 20 65  78 61 6d 70 6c 65 29 20  |d (for example) |
000003e0  22 61 64 66 73 3a 3a 34  2e 22 20 66 72 6f 6d 20  |"adfs::4." from |
000003f0  74 68 65 20 62 65 67 69  6e 6e 69 6e 67 20 6f 66  |the beginning of|
00000400  20 74 68 65 20 64 69 72  65 63 74 6f 72 79 20 73  | the directory s|
00000410  70 65 63 0a 20 20 73 68  6f 77 6e 20 69 6e 20 74  |pec.  shown in t|
00000420  68 65 20 22 44 69 72 20  73 63 61 6e 22 20 69 63  |he "Dir scan" ic|
00000430  6f 6e 20 6f 66 20 74 68  65 20 64 69 61 6c 6f 67  |on of the dialog|
00000440  75 65 20 62 6f 78 2e 20  54 68 69 73 20 69 73 20  |ue box. This is |
00000450  72 65 64 75 6e 64 61 6e  74 20 69 6e 66 6f 0a 20  |redundant info. |
00000460  20 62 65 63 61 75 73 65  20 74 68 65 20 46 69 6c  | because the Fil|
00000470  69 6e 67 20 53 79 73 74  65 6d 20 61 6e 64 20 44  |ing System and D|
00000480  65 76 69 63 65 20 69 63  6f 6e 73 20 61 6c 72 65  |evice icons alre|
00000490  61 64 79 20 64 69 73 70  6c 61 79 20 74 68 69 73  |ady display this|
000004a0  2e 0a 0a 2a 20 57 69 64  65 6e 65 64 20 74 68 65  |...* Widened the|
000004b0  20 64 69 61 6c 6f 67 75  65 20 62 6f 78 20 74 6f  | dialogue box to|
000004c0  20 61 63 63 6f 6d 6d 6f  64 61 74 65 20 6c 6f 6e  | accommodate lon|
000004d0  67 65 72 20 6d 65 73 73  61 67 65 73 2e 0a 0a 2a  |ger messages...*|
000004e0  20 41 64 64 65 64 20 64  69 72 65 63 74 6f 72 79  | Added directory|
000004f0  20 6e 61 6d 65 20 75 6e  64 65 72 6e 65 61 74 68  | name underneath|
00000500  20 61 70 70 6c 69 63 61  74 69 6f 6e 20 69 63 6f  | application ico|
00000510  6e 20 69 6e 20 74 68 65  20 64 69 61 6c 6f 67 75  |n in the dialogu|
00000520  65 20 62 6f 78 2e 0a 0a  2a 20 41 64 64 65 64 20  |e box...* Added |
00000530  22 46 69 6c 65 73 20 73  63 61 6e 6e 65 64 22 20  |"Files scanned" |
00000540  61 6e 64 20 22 44 69 72  73 20 73 63 61 6e 6e 65  |and "Dirs scanne|
00000550  64 22 20 69 63 6f 6e 73  20 74 6f 20 74 68 65 20  |d" icons to the |
00000560  64 69 61 6c 6f 67 75 65  20 62 6f 78 2e 0a 0a 56  |dialogue box...V|
00000570  32 2e 31 30 20 28 41 70  72 69 6c 20 31 39 39 31  |2.10 (April 1991|
00000580  29 2f 56 32 2e 31 31 20  28 41 70 72 69 6c 20 31  |)/V2.11 (April 1|
00000590  39 39 31 29 20 28 6e 65  69 74 68 65 72 20 76 65  |991) (neither ve|
000005a0  72 73 69 6f 6e 20 70 75  62 6c 69 63 6c 79 20 72  |rsion publicly r|
000005b0  65 6c 65 61 73 65 64 29  0a 2d 2d 2d 2d 2d 2d 2d  |eleased).-------|
000005c0  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
000005d0  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 0a 0a  |--------------..|
000005e0  2a 20 43 6f 64 65 20 68  65 61 76 69 6c 79 20 72  |* Code heavily r|
000005f0  65 77 6f 72 6b 65 64 20  62 79 20 50 68 69 6c 69  |eworked by Phili|
00000600  70 20 43 6f 6c 6d 65 72  3a 0a 20 20 55 73 65 72  |p Colmer:.  User|
00000610  20 69 6e 74 65 72 66 61  63 65 20 69 6d 70 72 6f  | interface impro|
00000620  76 65 64 20 61 6e 64 20  63 6c 6f 73 65 72 20 74  |ved and closer t|
00000630  6f 20 41 63 6f 72 6e 20  67 75 69 64 65 6c 69 6e  |o Acorn guidelin|
00000640  65 73 2e 0a 20 20 53 75  70 70 6f 72 74 20 66 6f  |es..  Support fo|
00000650  72 20 45 63 6f 6e 65 74  20 26 20 4e 46 53 20 61  |r Econet & NFS a|
00000660  64 64 65 64 2e 0a 20 20  4c 6f 67 67 69 6e 67 20  |dded..  Logging |
00000670  74 6f 20 61 20 66 69 6c  65 20 73 75 70 70 6f 72  |to a file suppor|
00000680  74 65 64 2e 0a 20 20 41  70 70 6c 69 63 61 74 69  |ted..  Applicati|
00000690  6f 6e 20 69 63 6f 6e 20  69 6e 20 64 69 61 6c 6f  |on icon in dialo|
000006a0  67 75 65 20 62 6f 78 20  6e 6f 77 20 75 73 65 73  |gue box now uses|
000006b0  20 73 74 61 6e 64 61 72  64 20 27 41 50 50 27 20  | standard 'APP' |
000006c0  69 63 6f 6e 20 69 66 20  6e 6f 74 20 69 6e 20 52  |icon if not in R|
000006d0  4d 41 2e 0a 20 20 43 65  42 69 74 20 76 69 72 75  |MA..  CeBit viru|
000006e0  73 20 63 68 65 63 6b 65  64 20 66 6f 72 2e 0a 20  |s checked for.. |
000006f0  20 3c 4f 62 65 79 24 44  69 72 3e 20 73 65 74 20  | <Obey$Dir> set |
00000700  74 6f 20 6e 75 6c 6c 3a  24 20 69 6e 20 74 68 65  |to null:$ in the|
00000710  20 21 52 75 6e 20 74 6f  20 73 6c 6f 77 20 64 6f  | !Run to slow do|
00000720  77 6e 20 43 65 42 69 74  20 69 6e 66 65 63 74 69  |wn CeBit infecti|
00000730  6f 6e 73 2e 0a 0a 20 20  54 68 61 6e 6b 73 20 74  |ons...  Thanks t|
00000740  6f 20 46 69 6c 20 66 6f  72 20 74 61 6b 69 6e 67  |o Fil for taking|
00000750  20 74 68 65 20 74 69 6d  65 20 6f 75 74 20 74 6f  | the time out to|
00000760  20 67 72 65 61 74 6c 79  20 65 6e 68 61 6e 63 65  | greatly enhance|
00000770  20 74 68 65 20 63 6f 64  65 20 2d 20 74 68 65 72  | the code - ther|
00000780  65 27 73 0a 20 20 6e 6f  20 77 61 79 20 49 20 63  |e's.  no way I c|
00000790  6f 75 6c 64 20 65 76 65  72 20 68 61 76 65 20 64  |ould ever have d|
000007a0  6f 6e 65 20 74 68 65 20  6e 65 74 77 6f 72 6b 20  |one the network |
000007b0  63 6f 64 65 20 6f 6e 20  6d 79 20 6f 77 6e 20 21  |code on my own !|
000007c0  0a 0a 2a 20 54 68 65 73  65 20 76 65 72 73 69 6f  |..* These versio|
000007d0  6e 73 20 77 65 72 65 20  6e 6f 74 20 72 65 6c 65  |ns were not rele|
000007e0  61 73 65 64 20 62 65 63  61 75 73 65 20 49 20 77  |ased because I w|
000007f0  61 6e 74 65 64 20 74 6f  20 6d 61 6b 65 20 73 6f  |anted to make so|
00000800  6d 65 20 66 75 72 74 68  65 72 0a 20 20 63 68 61  |me further.  cha|
00000810  6e 67 65 73 20 6f 6e 20  74 6f 70 20 6f 66 20 46  |nges on top of F|
00000820  69 6c 27 73 20 28 62 65  73 69 64 65 73 2c 20 69  |il's (besides, i|
00000830  74 20 74 6f 6f 6b 20 6d  65 20 74 69 6d 65 20 74  |t took me time t|
00000840  6f 20 73 75 73 73 20 68  69 73 20 6e 65 77 20 63  |o suss his new c|
00000850  6f 64 65 20 21 29 2e 0a  20 20 41 20 63 6f 75 70  |ode !)..  A coup|
00000860  6c 65 20 6f 66 20 6d 69  6e 6f 72 20 62 75 67 73  |le of minor bugs|
00000870  20 77 65 72 65 20 61 6c  73 6f 20 69 72 6f 6e 65  | were also irone|
00000880  64 20 6f 75 74 20 64 75  72 69 6e 67 20 74 68 69  |d out during thi|
00000890  73 20 70 72 6f 63 65 73  73 2e 0a 0a 56 32 2e 30  |s process...V2.0|
000008a0  30 20 28 4d 61 72 63 68  20 31 39 39 31 29 0a 2d  |0 (March 1991).-|
000008b0  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
000008c0  2d 0a 0a 2a 20 52 65 63  65 69 76 65 64 20 27 6e  |-..* Received 'n|
000008d0  65 77 27 20 41 72 63 68  69 65 56 69 72 75 73 20  |ew' ArchieVirus |
000008e0  66 72 6f 6d 20 41 6c 61  6e 20 47 6c 6f 76 65 72  |from Alan Glover|
000008f0  20 28 6f 72 69 67 69 6e  61 6c 6c 79 20 64 69 73  | (originally dis|
00000900  63 6f 76 65 72 65 64 20  62 79 20 48 75 67 6f 0a  |covered by Hugo.|
00000910  20 20 46 69 65 6e 6e 65  73 29 2e 20 41 66 74 65  |  Fiennes). Afte|
00000920  72 20 65 78 74 65 6e 73  69 76 65 20 64 69 73 61  |r extensive disa|
00000930  73 73 65 6d 62 6c 79 2c  20 64 65 74 65 63 74 69  |ssembly, detecti|
00000940  6f 6e 2f 69 6e 6e 6f 63  75 6c 61 74 69 6f 6e 20  |on/innoculation |
00000950  63 6f 64 65 20 77 61 73  0a 20 20 61 64 64 65 64  |code was.  added|
00000960  20 74 6f 20 56 4b 69 6c  6c 65 72 2e 20 53 6f 6d  | to VKiller. Som|
00000970  65 20 6f 66 20 74 68 65  20 69 64 65 61 73 20 6f  |e of the ideas o|
00000980  66 20 74 68 65 20 63 6f  64 65 20 65 6d 61 6e 61  |f the code emana|
00000990  74 65 20 66 72 6f 6d 20  48 75 67 6f 27 73 0a 20  |te from Hugo's. |
000009a0  20 22 48 79 70 6f 74 68  65 72 6d 69 63 22 20 69  | "Hypothermic" i|
000009b0  6e 6e 6f 63 75 6c 61 74  6f 72 2c 20 62 75 74 20  |nnoculator, but |
000009c0  74 68 65 79 27 76 65 20  62 65 65 6e 20 73 75 62  |they've been sub|
000009d0  73 74 61 6e 74 69 61 6c  6c 79 20 72 65 76 61 6d  |stantially revam|
000009e0  70 65 64 2e 0a 0a 2a 20  49 6d 70 72 6f 76 65 64  |ped...* Improved|
000009f0  20 65 72 72 6f 72 20 63  68 65 63 6b 20 69 66 20  | error check if |
00000a00  21 42 6f 6f 74 20 66 61  69 6c 65 64 20 74 6f 20  |!Boot failed to |
00000a10  6c 6f 61 64 20 77 68 65  6e 20 63 68 65 63 6b 69  |load when checki|
00000a20  6e 67 20 66 6f 72 20 74  68 65 20 45 78 74 65 6e  |ng for the Exten|
00000a30  64 0a 20 20 56 69 72 75  73 2e 0a 0a 2a 20 53 70  |d.  Virus...* Sp|
00000a40  6c 69 74 20 64 6f 63 75  6d 65 6e 74 61 74 69 6f  |lit documentatio|
00000a50  6e 20 69 6e 74 6f 20 6d  75 6c 74 69 70 6c 65 20  |n into multiple |
00000a60  66 69 6c 65 73 20 62 65  63 61 75 73 65 20 74 68  |files because th|
00000a70  69 73 20 66 69 6c 65 20  77 61 73 20 73 74 61 72  |is file was star|
00000a80  74 69 6e 67 20 74 6f 0a  20 20 67 72 6f 77 20 65  |ting to.  grow e|
00000a90  78 70 6f 6e 65 6e 74 69  61 6c 6c 79 20 21 0a 0a  |xponentially !..|
00000aa0  2a 20 52 65 76 61 6d 70  65 64 20 74 68 65 20 66  |* Revamped the f|
00000ab0  69 6c 69 6e 67 20 73 79  73 74 65 6d 20 63 79 63  |iling system cyc|
00000ac0  6c 69 6e 67 20 61 73 20  73 75 67 67 65 73 74 65  |ling as suggeste|
00000ad0  64 20 62 79 20 53 74 65  76 65 20 54 75 72 6e 62  |d by Steve Turnb|
00000ae0  75 6c 6c 2e 0a 0a 2a 20  57 69 64 65 6e 65 64 20  |ull...* Widened |
00000af0  74 68 65 20 64 69 61 6c  6f 67 75 65 20 62 6f 78  |the dialogue box|
00000b00  20 61 70 70 6c 69 63 61  74 69 6f 6e 20 69 63 6f  | application ico|
00000b10  6e 20 61 72 65 61 20 74  6f 20 63 6f 70 65 20 77  |n area to cope w|
00000b20  69 74 68 20 77 69 64 65  72 20 32 35 36 2d 63 6f  |ith wider 256-co|
00000b30  6c 6f 75 72 0a 20 20 4d  4f 44 45 20 69 63 6f 6e  |lour.  MODE icon|
00000b40  73 2e 0a 0a 2a 20 49 6e  63 72 65 61 73 65 64 20  |s...* Increased |
00000b50  57 69 6d 70 53 6c 6f 74  20 66 6f 72 20 74 68 65  |WimpSlot for the|
00000b60  20 21 52 75 6e 49 6d 61  67 65 20 66 72 6f 6d 20  | !RunImage from |
00000b70  36 34 4b 20 74 6f 20 38  30 4b 20 62 65 63 61 75  |64K to 80K becau|
00000b80  73 65 20 6f 66 20 74 68  65 20 6c 61 72 67 65 72  |se of the larger|
00000b90  0a 20 20 63 6f 64 65 2e  0a 0a 56 31 2e 32 30 20  |.  code...V1.20 |
00000ba0  28 4a 61 6e 75 61 72 79  20 31 39 39 31 29 0a 2d  |(January 1991).-|
00000bb0  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
00000bc0  2d 2d 2d 0a 0a 2a 20 49  6d 70 72 6f 76 65 64 20  |---..* Improved |
00000bd0  65 72 72 6f 72 20 63 68  65 63 6b 69 6e 67 20 64  |error checking d|
00000be0  75 72 69 6e 67 20 61 20  73 63 61 6e 20 2d 20 61  |uring a scan - a|
00000bf0  6e 20 4f 53 5f 47 42 50  42 20 65 72 72 6f 72 20  |n OS_GBPB error |
00000c00  77 69 6c 6c 20 68 61 6c  74 20 74 68 65 0a 20 20  |will halt the.  |
00000c10  73 63 61 6e 20 61 6e 64  20 64 69 73 70 6c 61 79  |scan and display|
00000c20  20 74 68 65 20 65 72 72  6f 72 20 69 6e 20 74 68  | the error in th|
00000c30  65 20 53 74 61 74 75 73  20 66 69 65 6c 64 20 6f  |e Status field o|
00000c40  66 20 74 68 65 20 64 69  61 6c 6f 67 75 65 20 62  |f the dialogue b|
00000c50  6f 78 2e 0a 20 20 41 6e  20 6f 62 76 69 6f 75 73  |ox..  An obvious|
00000c60  20 6f 6e 65 20 69 73 20  22 44 72 69 76 65 20 65  | one is "Drive e|
00000c70  6d 70 74 79 22 2c 20 77  68 69 63 68 20 56 31 2e  |mpty", which V1.|
00000c80  31 30 20 64 69 64 6e 27  74 20 68 61 6e 64 6c 65  |10 didn't handle|
00000c90  20 61 74 20 61 6c 6c 20  77 65 6c 6c 20 21 0a 0a  | at all well !..|
00000ca0  2a 20 44 69 73 70 6c 61  79 20 77 61 72 6e 69 6e  |* Display warnin|
00000cb0  67 20 64 69 61 6c 6f 67  75 65 20 69 66 20 75 73  |g dialogue if us|
00000cc0  65 72 20 64 69 73 61 62  6c 65 73 20 74 68 65 20  |er disables the |
00000cd0  63 75 72 72 65 6e 74 6c  79 20 73 65 6c 65 63 74  |currently select|
00000ce0  65 64 20 66 69 6c 69 6e  67 0a 20 20 73 79 73 74  |ed filing.  syst|
00000cf0  65 6d 20 28 65 2e 67 2e  20 62 79 20 2a 52 4d 4b  |em (e.g. by *RMK|
00000d00  69 6c 6c 69 6e 67 20 69  74 29 2e 0a 0a 2a 20 44  |illing it)...* D|
00000d10  69 73 70 6c 61 79 20 66  61 74 61 6c 20 65 72 72  |isplay fatal err|
00000d20  6f 72 20 69 66 20 6e 6f  20 73 63 61 6e 6e 61 62  |or if no scannab|
00000d30  6c 65 20 66 69 6c 69 6e  67 20 73 79 73 74 65 6d  |le filing system|
00000d40  73 20 61 72 65 20 64 65  74 65 63 74 65 64 20 61  |s are detected a|
00000d50  74 20 61 6e 79 0a 20 20  74 69 6d 65 2e 0a 0a 2a  |t any.  time...*|
00000d60  20 41 64 64 65 64 20 61  6e 20 61 70 70 6c 69 63  | Added an applic|
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00000d90  6f 20 72 65 66 6c 65 63  74 20 74 68 65 20 69 63  |o reflect the ic|
00000da0  6f 6e 20 6f 66 20 74 68  65 0a 20 20 61 70 70 6c  |on of the.  appl|
00000db0  69 63 61 74 69 6f 6e 20  63 75 72 72 65 6e 74 6c  |ication currentl|
00000dc0  79 20 62 65 69 6e 67 20  73 63 61 6e 6e 65 64 20  |y being scanned |
00000dd0  28 73 75 67 67 65 73 74  65 64 20 62 79 20 50 68  |(suggested by Ph|
00000de0  69 6c 69 70 20 43 6f 6c  6d 65 72 29 2e 0a 0a 2a  |ilip Colmer)...*|
00000df0  20 41 70 70 6c 69 65 64  20 66 69 78 65 73 20 61  | Applied fixes a|
00000e00  6e 64 20 69 6d 70 72 6f  76 65 6d 65 6e 74 73 20  |nd improvements |
00000e10  74 6f 20 74 68 65 20 50  52 4f 43 70 75 74 64 61  |to the PROCputda|
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00000ea0  6e 64 20 63 6f 6c 6f 75  72 20 66 72 6f 6d 20 63  |nd colour from c|
00000eb0  79 61 6e 20 74 6f 20 61  20 6d 6f 72 65 20 72 65  |yan to a more re|
00000ec0  73 74 66 75 6c 20 6c 69  67 68 74 20 67 72 65 79  |stful light grey|
00000ed0  2e 0a 0a 2a 20 46 69 78  65 64 20 69 6e 63 6f 72  |...* Fixed incor|
00000ee0  72 65 63 74 20 52 61 6d  46 53 20 68 61 6e 64 6c  |rect RamFS handl|
00000ef0  69 6e 67 20 61 6e 64 20  61 64 64 65 64 20 53 43  |ing and added SC|
00000f00  53 49 20 73 75 70 70 6f  72 74 20 28 4f 61 6b 20  |SI support (Oak |
00000f10  61 6e 64 20 4c 69 6e 67  65 6e 75 69 74 79 29 2e  |and Lingenuity).|
00000f20  0a 0a 56 31 2e 31 30 20  28 44 65 63 65 6d 62 65  |..V1.10 (Decembe|
00000f30  72 20 31 39 39 30 29 0a  2d 2d 2d 2d 2d 2d 2d 2d  |r 1990).--------|
00000f40  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 0a 0a 2a  |-------------..*|
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00000f80  70 74 69 6f 6e 73 2e 20  43 6f 64 65 20 73 75 62  |ptions. Code sub|
00000f90  73 74 61 6e 74 69 61 6c  6c 79 0a 20 20 72 65 77  |stantially.  rew|
00000fa0  6f 72 6b 65 64 20 74 6f  20 73 75 70 70 6f 72 74  |orked to support|
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00000fe0  31 2e 30 30 0a 20 20 64  69 64 20 21 29 2e 0a 0a  |1.00.  did !)...|
00000ff0  2a 20 4e 65 77 20 70 61  74 63 68 20 63 6f 64 65  |* New patch code|
00001000  20 74 6f 20 66 69 78 20  45 78 74 65 6e 64 20 56  | to fix Extend V|
00001010  69 72 75 73 20 27 62 75  67 27 20 2d 20 6e 6f 77  |irus 'bug' - now|
00001020  20 70 72 6f 76 69 64 65  73 20 73 61 66 65 72 20  | provides safer |
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00001080  73 20 73 74 69 6c 6c 0a  20 20 72 69 73 6b 69 65  |s still.  riskie|
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00001100  61 76 65 20 74 68 61 74  20 6d 69 73 73 69 6e 67  |ave that missing|
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000011d0  68 61 74 20 68 61 76 65  20 74 68 65 20 4f 62 65  |hat have the Obe|
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000011f0  65 20 63 61 6e 20 6e 6f  77 20 62 65 20 69 6e 6e  |e can now be inn|
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00001220  72 75 73 20 62 65 63 61  75 73 65 20 74 68 69 73  |rus because this|
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00001310  20 66 69 6c 65 20 69 73  20 62 65 69 6e 67 20 63  | file is being c|
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00001340  0a 20 20 6e 6f 20 21 53  70 72 69 74 65 73 20 66  |.  no !Sprites f|
00001350  69 6c 65 20 69 6e 20 74  68 65 20 64 69 72 65 63  |ile in the direc|
00001360  74 6f 72 79 20 28 77 69  74 68 20 74 68 65 20 53  |tory (with the S|
00001370  70 72 69 74 65 20 66 69  6c 65 74 79 70 65 29 2c  |prite filetype),|
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000013a0  72 3e 2e 21 53 70 72 69  74 65 73 20 6c 69 6e 65  |r>.!Sprites line|
000013b0  20 69 73 20 6e 6f 20 6c  6f 6e 67 65 72 20 61 64  | is no longer ad|
000013c0  64 65 64 2e 0a 0a 56 31  2e 30 30 20 28 4e 6f 76  |ded...V1.00 (Nov|
000013d0  65 6d 62 65 72 20 31 39  39 30 29 0a 2d 2d 2d 2d  |ember 1990).----|
000013e0  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
000013f0  2d 0a 0a 2a 20 57 72 69  74 74 65 6e 20 61 73 20  |-..* Written as |
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00001410  61 73 6b 69 6e 67 20 42  41 53 49 43 20 70 72 6f  |asking BASIC pro|
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00001430  20 61 6c 73 6f 20 69 6e  6e 6f 63 75 6c 61 74 65  | also innoculate|
00001440  0a 20 20 21 42 6f 6f 74  20 66 69 6c 65 73 20 61  |.  !Boot files a|
00001450  67 61 69 6e 73 74 20 74  68 65 20 45 78 74 65 6e  |gainst the Exten|
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00001470  72 73 65 73 20 64 6f 77  6e 20 64 69 72 65 63 74  |rses down direct|
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000014c0  69 6e 20 67 61 72 69 73  68 20 72 65 64 2c 20 67  |in garish red, g|
000014d0  72 65 65 6e 20 6f 72 20  79 65 6c 6c 6f 77 2e 0a  |reen or yellow..|
000014e0  0a 2a 20 43 61 6e 20 72  65 6d 6f 76 65 20 74 68  |.* Can remove th|
000014f0  65 20 45 78 74 65 6e 64  20 56 69 72 75 73 20 52  |e Extend Virus R|
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00001510  6d 6f 64 75 6c 65 20 6f  72 20 69 6e 66 65 63 74  |module or infect|
00001520  69 6f 6e 20 6f 66 20 61  6e 20 21 42 6f 6f 74 2e  |ion of an !Boot.|
00001530  0a                                                |.|
00001531