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<title>Operating Systems FAQ :: ISR :: Interrupt Service Routines</title>
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<TD><H2><A name="vmware">VMWare PC emulator</A></H2>
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<TD>VMWare is a commercial i386 PC Emulator. (Think BOCHS, without
all the nasty bugs or setup hassles).
<p>Unlike Bochs, it does not have a built in debugger, but it is
far more 'compatible' and a more complete emulator.
<p>You can get it from <a href="http://www.vmware.com">www.vmware.com</a>
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<TD><H2><A name="bochs">Bochs (i386) PC emulator</A></H2>
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<TD>Bochs is the name of an i386 pc emulator.. and I have to say its
very impressive! Bochs can emulate an i386 pc so good you can boot
linux inside of Windows NT.
<p>Its a great development tool and free for non commercial use.
It uses disk images, so you can put your kernel onto a floppy disk
or hard disk image (file) and boot it via that.
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<p>It lessense the time you have to physically boot and reboot
your PC to test your OS code.
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<p>There are SOME drawbacks. It only supports a basic i386 pc with FPU.
There is no PNP or PCI (as of current version).
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<p>You can get this kickass program from <a href="http://www.bochs.com">www.bochs.com</a>
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<td><h2><a name="mtools">MTools (DOS disk image tools)</a></h2></td>
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<td>MTools! MTools started life as unix tools to manipulate MSDOS formatted
floppy disk images. There is now a win32 port available.
<p>This is good for distributing your OS to other people, you can supply a
disk image with your kernel on it very easily.
<p>MTools make the maintenance of your disk image very easy.
<p>Point to note is, MTools only work with dos FAT12/16 and VFAT
filesystems and not FAT32.
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MTools for Win32 is available at;
<a href="http://www.v.nu/core/Mtools/index.htm">http://www.v.nu/core/Mtools/index.htm</a>
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<td><h2><a name="simics">SimISC : Sparc v8 simulator</a></h2></td>
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<td>SimICS emulates a Sparc V8 (supersparc) compatible processor and a sun4m system (sparcstation 20). It is able to run linux and SunOS. I'm currently developing a kernel based on the exokernel architecture using SimICS as a debugging tool.
<p>The only problem is that SimICS runs on a Ultra sparc system...
<p>You can download SimISC from here;
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<a href="http://www.sics.se/simics/">http://www.sics.se/simics/</a>
<p>(The above was taken from a post from the OS-Dev web message board)
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