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OCIDEC-3 in verilog? Do PIO only accesses to hard drives workwithout DMA?
by Unknown on Jan 23, 2004 |
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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
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66352 Karlsbrunn
GERMANY
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Marc.Colling at MaCo-Engineering.de
www.MaCo-Engineering.de
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Armando Astarloa Cuéllar - Universidad del Pais Vasco UPV/EHU
TecnologÃa Electrónica
Departamento de Electrónica y Telecomunicaciones
Escuela Superior de Ingenieros - Email: jtpascua at bi.ehu.es
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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