Subject: |
Need to use a board in various configurations. |
From: |
[email protected] (Bill Brown) |
Date: |
Mon, 11 Jul 94 10:53:52 PDT |
I recently did device and driver support for the vmivme-2534 parallel
i/o board. This is a 32-bit board, and each 8-bit byte can be configured
as either inputs or outputs. In order to solve the immediate problem, I
played Solomon and split the board right down the middle - 16 inputs and
16 outputs.
It turns out that this isn't really a very good solution - it would be
much better if it were possible to allocate resources in a more flexible
manner.
One possible solution would be to tweak the driver a bit and create 5
device-support packages (32 bits in & no bits out, 8 bits in & 24 bits
out, ... no bits in and & 32 bits out), but that seems kind of ugly.
The other options seem even uglier, and much more prone to error in the
configuration process.
I'm probably missing the obvious here (now that's something I seem to excel
at!). Any ideas would be appreciated.
-bill
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