On Tue, 9 Mar 1999 10:29:25 -0800 (PST) 
 Bill Studenmund <skippy@macro.Stanford.EDU> wrote:

 > Sounds like we need 0646 support in -current. :-)

The CMD 0646 is supported by the pciide driver.  Someone just needs to
write the pciide_machdep glue for the macppc port.  This basically means
that if the chip is wired to use "compatibility" interrupts (which I
somehow doubt, since these machines don't have PCI-ISA bridges, right?),
then it needs to route that for the pciide driver.

Otherwise, the stubs can be noops, if native PCI interrupts are to be
used.

Example code can be taken from the i386 and alpha ports.

        -- Jason R. Thorpe <thorpej@nas.nasa.gov>