I made a IDE Interface board which is based on bITmASTER's DC IDE-HD
Interface (http://members.nbci.com/_bitmaster_/dc-index.html). And
I've written the MD(Machine Dependent) part of a wdc driver.

Now it works on NetBSD/dreamcast.

  wdc MD driver for DC IDE-HD Interface on NetBSD/dreamcast:
    http://www.ma.nma.ne.jp/~ikehara/dc/dcwdc.html

The performance is not good because it polls IDE's IRQ signal. So I
want to know whether I can use SH4's interrupt or not. Is there anyone
who knows about it?

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ikehara