[Disksim-users] Hardware used for UDE and SATA emulation

[Steve Schlosser]

Hi Mark

Disksim is only a simulator, NOT an emulator.  There was a related
project at CMU called The Memulator which used Disksim to provide
timing-accuracy for a memory-based storage emulator:

http://www.pdl.cmu.edu/ftp/Storage/timing_abs.html

Memulator is not part of the Disksim code, but there is a snapshot
available: http://www.ece.cmu.edu/~griffin2/memulator-3.0-release.tar.gz.
 All the normal caveats apply to the code - it is unsupported, I
haven't actually used it myself, so unfortunately I can't give you any
help in getting it working.

-steve

On Mon, May 25, 2009 at 3:35 AM, Markus Wanner <markus at bluegap.ch> wrote:
> Hello Mark,
>
> Quoting "Mark DM" <markosjal at gmail.com>:
>>
>> My understanding of disksim is that id does more than measure that it
>> actually EMULATES the disk via a network and an interface such as SCSI or
>> IDE.
>
> No, it simulates the timings, but without any real data behind it. AFAIU
> disksim takes I/O access patterns and returns estimated timings for various
> storage systems (or single platters).
>
>> My intention is to actually emulate a disk via a network interface.
>
> Does that emulated disk require some sort of cycle accurate timings WRT some
> real disk or storage system? That's probably the only point where disksim
> could be of use for you.
>
>> What I am trying to determine is the hardware required to emulate an IDE
>> disk. Is any old IDE host controller usable for this?
>
> I don't consider an "old IDE host controller" to be an emulation. It's just
> an IDE controller. If it suffices, you don't need to emulate anything, do
> you?
>
> If you are really more into hardware, you might want to look at various VHDL
> or Verilog projects on OpenCores, they provide some sort of IDE (i.e. ATA)
> controller at [1].
>
> Regards
>
> Markus Wanner
>
>
> [1]: The ATA project at OpenCores:
> http://www.opencores.org/?do=project&who=ata
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