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Totally AMOS - Issue 1 (1991-11)(Tucker, Len - Tucker, Anne).adf
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VirusBuster.seq
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1991-07-19
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^6VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
^2[3COMPUTER VIRUS"S - ^1[1A Brief Guide For Beginners.[0
^5[2by ROD PASCOE.[0
^2[5Author of Virus Buster.[0
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^2 Welcome to the annoying world of computer virus's. For those of you
^2who do not fully know what a Computer Virus is, then let me explain.
^1 A true computer virus is a program that hides itself away on a disk
^1or other media. Without the user of the computer being aware of it,
^1it copies itself around onto other disks.
^7 Contrary to popular belief virus's CANNOT damage your computer.
^7They can however damage any of the data that you have on the
^7computer.
^2 Basically there are two ways to avoid virus's. The first is to
^2write protect your disks and leave them write protected. This is
^2alright for people who only use their computer for games playing etc.
^2but for the other users e.g. the programmers etc. then the only
^2alternative is to use a decent virus killer.
^1 There are basically two types of Amiga virus. The first and most
^1common of these is the bootblock virus. The bootblock of the disk is
^1the first part of the disk to be read in when the disk is inserted at
^1the workbench prompt. If a virus has infected the bootblock then it
^1will be started upon booting. The location of these virus's makes it
^1easy to recognise and kill them.
^7 The second type of virus is the link or file virus. These virus's
^7attach themselves to executable files and are activated when a
^7program is run. This makes them much more harder to find.
^4 Virus Buster was initially written to remove the BGS9 virus which
^4had infected most of the authors disks. At this stage I only had the
^4virus killer VirusX, which although was very good in its time was not
^4able to recognise the BGS9 virus, so I wrote a small program in BASIC
^4to remove the virus from a disk. The program could not however at
^4this stage recognise it in memory.
^6 It was shortly after this that I decided to develop the killer
^6further. I added the check for memory and added a custom user
^6interface. I also ported the code over from AmigaBASIC to AMOS.
^6After I had done this, I enlisted the aid of an assembly language
^6programmer friend of mine called Peter Ivey who wrote me a small
^6program to read a bootblock from a disk. This then enabled me to
^6check for the more common Bootblock virus's as well as the BGS9 file
^6virus. Since then Virus Buster (A nickname that caught on!) has
^6expanded and grown to the stage that you see now.
^3 Happy Virus Killing !!
^2[4 For details of how you can contact Rod to send him any nasty[0
^2[4virus's, please turn to the adverts section.[0
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