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From: balgunapriya at yahoo.com<balgunapriya@y...>
Date: Tue Mar 27 15:51:14 CEST 2007
Subject: [oc] x86 IP Core
Dear All,

A good news for you.

iWave systems has announced X86 IP core. The source code and net list
is available.

The business model is flexible.Have a try.

Regards,
Priya

----- Original Message -----
From: antti@c...
To: cores@o...
Date: Mon, 28 Jul 2003 19:32:48 +0200
Subject: Re: [oc] x86 IP Core

>
>
> bochs is open source 386 + PC hardware emulater in C++
> it would be possible to compile it for some softcore in ASIC
> it is possible to use some hardcore MCU (like in V2Pro) or full
> soft core, but sure it would be one softcore emulating another
> so speed would drop, OTOH it may make sense to develop
> a specialized core (not x86) that can emulate x86 relativly fast
> somewhat similar approuch as MemoryLogix or Transmeta
>
> x86 Core options:
>
> 1) cycle accurate clone (real headache)
> 2) classical microcode engine (boring)
> 3) microcode engine that can reload on the fly - you could achieve
> even full pentium 6 support because new microcodes are loadable
> (well speed penalty)
> 4) custom VLIW machine emulating x86
> 5) some C programmable RISC emulating x86 - this is free option.
> but I looked at bochs, trying to compile them for fpga core, I
> would
> rather write an emulator in pure assembler, if I have time I could
> try to compile bochs with GCC-MB or GCC-PPC but I guess it will
> be a disaster :(
> 6) x86 Kernel-1 approuch - a x86 core that has minimal
> functionality to
> be an x86 emulator, it has some instructions implemented, all non
> implemented will fall through below highest 386 kenrel ring,
> Kernel(-1)
> /is now my definition/, in Kernel(-1) mode all the instruction the
> core
> does not support are emulated. This is faster than emulating with
> non
> x86 based machine. Again this approuch also allows full pentium
> support
> (speed penalty applies). And it allows the configurable core, for
> either
> speed or size. In all configurations Pentium class instruction
> could be
> supported.
>
> ***
> clarification, you can not get 386 and no v8086, virtual 8086
> mode is built in, supporting it makes the 386 core much larger
> (that is what legacy means)
>
> and another clarification Easypath is not FPGA ie it is mask
> version
> of FPGA, well ok you could say same thing. I think xilinx calls it
> "EASY PATH" to ASIC
> but you can get ASICs in IBM blue (0.7micron copper) that include
> Xilinx FPGA fabric as macrocells, so the ASIC/FPGA boundaries
> are floating a bit.
>
> antti
>
>
>
>
>
> ----- Original Message -----
> From: Rudolf "Usselmann (OpenCores)" <rudi@o... >
> To: cores@o...
> Date: 28 Jul 2003 22:56:36 +0700
> Subject: Re: [oc] x86 IP Core
>
> >
> >
> > On Mon, 2003-07-28 at 23:17, antti@c... wrote:
> > > From: Rudolf "Usselmann (OpenCores)" <rudi@o... >
> > > >
> > > > Anybody know of a free or really cheap x86 IP core ?
> > > > 286 or 386 would do fine.
> > >
> > > what is the target technology?
> > > how fast it needs to be?
> > > how small it should be?
> >
> > I'm looking for a Soft IP core so the above will
> > depend on my technology. Size is always as small
> > as possible.
> >
> > > should it support v8086 mode or could be only 386
> protected
> > mode?
> >
> > Well, I really only need 386, but will take what I > > can get. I can always modify it. > > > > > you could compile bochs for V2Pro, getting possible some > MIPS > > > > What is "bochs" ? > > > > > out of it in 386 mode, but cheapeast V2Pro's are 30$ in > huge > > > quantity, (xilinx dreams?). > > > they promise 80% reduction for Easypath devices, > > > but smallest applicable is VP30 > > > that costs hm I dont know, VP20 is 600$ one off, > > > VP30 850?, one off price > > > 270, qty 100k?? > > > 80% off 54$ ? wild guesses. > > > > > > but I am afraid you need low power core :) > > > > My final application will NOT be FPGA. > > > > > antti > > > > Regards, > > rudi > > -------------------------------------------------------- > > www.asics.ws --- Solutions for your ASIC/FPGA needs --- > > ----------------- FPGAs * Full Custom ICs * IP Cores --- > > FREE IP Cores --> http://www.asics.ws/ <-- FREE IP Cores > > >