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Message
From: Armando Astarloa<jtpascua@b...>
Date: Fri Jan 23 08:59:51 CET 2004
Subject: Fwd: RE: [oc] OCIDEC-3 in verilog? Do PIO only accesses to
hard drives workwithout DMA?
At 19:35 21/01/2004 +0100, you wrote:
>Hi Armando,
>
>in the posting you wrote that some guys already wrote the write part, do
>you know who?
(sent a private message)
>I am currently looking for ideas how to get very fast data to/from a HDD
>(as fast as possible).
>Meanwhile I think it is only possible without software.
>Therefore I was surprised to see your project, that you already
>implemented a part of the FAT file system.
Try a look into the implementation of the system. It is not pure "hardware"
or "software", it embbededs two
tiny risc cpus. The performance of the system is limited by the PIO mode of
the IDE device (the code of the cpu which
manages the ata-atapi protocol is adjusted with wait states). In a low cost
Spartan II it runs at 60 Mhz at it needs about
283 slices and two bolck ram (aprox. 16% of a X2SC150 device).
Armando
>Do you made some performance measurements?
>
>Best Regards,
>
>Marc
>
>
>P.S. Do you have meanwhile some documentation?
>
>
>
>
>
>MaCo-Engineering
>Dipl.-Ing. Marc Colling
>Schlossstrasse 50
>66352 Karlsbrunn
>GERMANY
>
>phone : (+49) 6809 / 7020190
>fax : (+49) 6809 / 7020191
>mobile : (+49) 170 / 7780788
>
>Marc.Colling@M...
>www.MaCo-Engineering.de
>
>
>
>
>
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Armando Astarloa Cuéllar - Universidad del Pais Vasco UPV/EHU
Tecnología Electrónica
Departamento de Electrónica y Telecomunicaciones
Escuela Superior de Ingenieros - Email: jtpascua@b...
Ald. de Urquijo s/n Tel.: 34 - 94 - 601 73 04
48013 BILBAO (SPAIN) Fax.: 34 - 94 - 601 42 59
URL : http://det.bi.ehu.es/~apert
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