AHA1542B Tribulations

[jwt@example.com (Jim Tittsler)]

>I can boot the SCSINET1 configuration of boot disk with no crashes,
>chaining to the root disk with the COLOR144 configuration.  BUT, the
>1542 driver reports the following error message during boot:
>
>  aha1542_in failed(3): Unable to determine Adaptec DMA priority.
>  Disabling board

I believe by default the AHA154x driver checks 0x330 and 0x334 (in
that order) for cards.  Do you have something else at those addresses
that is being mistaken for the card, causing the driver to misread
what it thinks is configuration info?  If so, you might try giving
the driver the address of your card explicitly, rather than have it
probe around. Adding something like AHA1542=0x130 to your LILO boot
command line (adjusted for the base address of your card, of course :-).

The driver supports DMA channels 5, 6, 7.  Is your card configured
to use one of those?

You might also want to try a more recent kernel.  Adaptec support
was rather slow to mature (although I thought at least the 154x
was debugged by 1.2.8, certainly by 1.2.13).

-- 
Jim Tittsler, Tokyo  7j1ajh@example.com  <URL:http://shrine.cyber.ad.jp/~jwt/>