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In message <Pine.BSI.3.95.970112201211.5837A-100000@gold.interlog.com>,Robert E
rlich writes:
> Hello all;
>
> I wonder if there are any of you in kernel land that might be able to help
> me with this, as it is less a kernel question (although it does involve
> creating a driver) and more a hardware question.
>
> I am adapting a servo motor controller board to the ISA buss. (it was
> originally designed for the New Micros NMIS microcontroller family) I
> would like to place it in an I/O space far away from my other periphs.;
> ie. 65535 >= port >=1024.
>
> What is the magic of I/O ports below 0x3FF on the ISA buss? Some texts I
> have read state that only the first 10 bits of the I/O address are decoded
> onto the ISA buss. Is this true? Do addresses that
> are higher wrap around? Are the address lines available to create
> hardware that decodes to a >=1024 I/O address? If not, what happens if I
> outb(0x400, 0xXX)? All these questions....
>
> Thanks in advance
>
> Robert
> ...
>
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