Re: [Linux-gpib-general] PCIIA problem

[frank m. h. <fm...@st...>]

On Mon, 24 Jun 2002, Mitchell Ferschweiler wrote:

> No. The PCII/PCIIA card works only in PCII mode. In PCIIA mode, there
> is an error about command bytes, identical to the one discussed
> previously on the list. I can double check my settings, but I'm pretty
> sure I had everything right. The PCII/PCIIA card didn't work at all
> with the 3.1.4, but with the lastest CVS, the PCII mode works.
>
> Mitchell
>

You may be having an ioport conflict.  In IIA mode, the pcII/IIA actually
provides 16 ioports instead of the 8 used by a real IIA.  The extra
ioports are used to access the extra capabilities of the nat4882 chip.
They are not allocated by the driver, and if something else is writing to
them it could put the nat4882 into an unusable state.  The extra ioports
come after the first 8 with the same spacing of 0x400.  I suppose I could
add a new interface for 'pcII/IIA in IIA mode' that allocates all 16
ioports so a conflict will show up right away.  Yes, I should do that.

Frank