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RE: ARM - RAM region at other address than 0
- From: "Doyle, Patrick" <WPD at dtccom dot com>
- To: "'Grant Edwards'" <grante at visi dot com>
- Cc: "'Backhaus Willy'" <w dot backhaus at newage-avkseg dot com>, ecos-discuss at sources dot redhat dot com
- Date: Mon, 19 May 2003 16:44:22 -0400
- Subject: RE: [ECOS] ARM - RAM region at other address than 0
>
> At one point I had a hacked version of vectors.S that worked
> with ROM at 0. It did the "double vector" thing (not very
> pretty). After tiring of the requirement to maintain my own
> vectors.S, I finally swapped ROM/RAM -- life is easier that
> way.
>
> If the 5471 doesn't have some sort of software-controlled
> chip-select logic, then when you lay out your board you should
> add a couple gates to allow two of the chip selects to be
> swapped.
>
That's what I remember! Spectrum Digital put a "swap chips selects"
register in their FPGA.
Thanks Grant...
--wpd
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