Re: [oc] PC-CARD/PCMCIA controller core

[rherveille@opencores.org]

I am not a specialist on this terrain, I am much more experienced in
the CompactFLASH arena. But if PC-Cards are anywhere similar, they are
used in an ATA-like mode. CompactFLASH supports a True-ATA connection
(without hot-pluggability), I know PC-CARD does not support this mode.

True PC-CARDS are supposed (!!) to support both operating modes, i.e.
PCMCIA and ATA connectability. For video interface cards there's an
additional mode which has to be supported; the Zoomed-Video-Port. In
this mode, a number of PC-CARD signals are renamed/given a new
definition to support direct access to the video cards frame buffer.

All this is not supported by the OCIDEC and/or the PCI cores. You have
to write a new core for this.

Richard


> 
> 
> Hi Richard, 
> 
> I know about that. Currently we are only using ATA cards and want 
> to add support for 
> "real" PC-cards. What I am not sure about is how ATA cards are 
> handled by PC-card controllers. 
> Are they used in ATA mode or are they used different ? 
> 
> Matthias 
> 
> Richard Herveille wrote: 
> 
> >>Hi Shawn, 
> >> 
> >>Shawn Tan wrote: 
> >> 
> >>>-----BEGIN PGP SIGNED MESSAGE----- 
> >>>Hash: SHA1 
> >>> 
> >>>Matthias Fuchs wrote: 
> >>>| does anybody know about a PCMCIA/PC-CARD controller 
> core ? 
> >>> 
> >>>I wonder if the PCI core could be used?? I'm not really 
> sure about this 
> >>>but aren't the standards similar?? Maybe you can start 
> from there too.. 
> >>> 
> >>Yes, I thought about that, too. If I understood the PCMCIA 
> stuff correctly, 
> >>there are two standards meant, when talking about PCMCIA: 
> PC-Card and 

> >>Cardbus. 
> >> 
> >>PC-Card is not that complicated (and fast) as PCI. While 
> Cardbus is very 
> >>similar to PCI. At the moment I only need to support 
> PC-Card. 
> >> 
> >>That means for the moment, it does not make sense to use 
> the PCI core. 
> >> 
> >>Did anybody connect a PC-card (not a cardbus card) to a 
> FPGA before ? 
> >> 
> >> 
> > 
> > If I am not mistaken, PC-CARD - like CompactFLASH- supports an 
> ATA interface; 
> > i.e. they can operate in a mode as were they ATA devices. In 
> that case you 
> > can use the simplest OpenCores ATA controller (OCIDEC-1). 
> > 
> > Richard 
> > 
> > 
> >>Matthias 
> >> 
> >> 
> >>>With Metta, 
> >>>Shawn Tan. 
> >>> 
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> > 
> > 
> > 
> > 
> 
> 
> -- 
> 
>
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> 
>                              _/_/_/_/   Matthias Fuchs 
>                             _/_/_/_/   Dipl.-Ing. 
>                            _/_/_/_/   
> matthias.fuchs@e...  
> 
>        _/_/_/   _/_/_/_/_/_/_/      esd electronic system design 
> gmbh 
>      _/   _/  _/             _/    Vahrenwalder Str. 207 
>     _/   _/    _/_/_/   _/   _/   D-30165 Hannover 
>     _/             _/  _/   _/   Phone: +49-511-37298-0 
>      _/_/_/_/_/_/_/   _/_/_/    Fax:   +49-511-37298-68 
> 
> 
>
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