Re: [oc] Get OCIDEC working

[Daniel Haensse <haensse@swissembedded.com>]

Sorry folks, should have been private.

Dani
> Hi Marcos,
> 
> I have a little project to finish for a customer, I will restart on friday 
with
> the jffs stuff. 
> 
> Dani
> > Well, my bus system are only 16bit , i see that i need to make a warper for 
> > the ocidec register taht are all of 32bit, the ATA register are all of 
16Bit.
> > 
> > I'm very newbye, but i read a bit more of vhdl, and try to make the warper.
> > 
> > Thks a lot.
> > At 14:52 14/10/2002 +0200, you wrote:
> > 
> > >Hi Marcos,
> > >
> > >Depends on what you mean by your system is 16bit.
> > >The IDE interface is 16bit. Whereas the OCIDEC uses 32bit registers.
> > >When you access the IDE drive through the 32bit host interface, only the 
> > >lower
> > >16bits are valid. The upper 16bits are garbage.
> > >So the 16bit IDE interface is mapped to the 16bit LSBs of the 32bit host
> > >interface.
> > >
> > >
> > >However if your host interface is only 16bits, then you need to write a
> > >wrapper so you can access the 32bit registers using a 16bit databus.
> > >
> > >Richard
> > >
> > >
> > >
> > > > Hello i'm a newbye in vhdl programming.
> > > >
> > > > I'm making a proyect that have a fpga chip, this proyect is the dragonix
> > > > board ( http://www.openhardware.net/Dragonix ), in the FPGA implement a 
> I2C
> > > > core and a SPI core to control some devices on the board, i want to
> > > > implement the OCIDEC-1 to drive the IDE bus that are connected to the 
> FPGA,
> > > > my problem is that the bus system are 16Bit width, and the OCIDEC-1 have
> > > > 32bit registers, how i can adapt it to work under my design,i very
> > > > confused.
> > > >
> > > > Any help will be apeciated.
> > > >
> > > > Regards.
> > 
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> 
> 
> 
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