Cannot boot June snapshot

Hi all,

I have an old HP Kayak XU (dual PII 300 MHz) that was happily running
Windows NT 4, then Linux with 2.4 kernel, then FreeBSD 5.2.1. Today I
tried to install 6-CURRENT snapshot from June, and during boot it
repeats the same error messages regarding ahc0 over and over. Please
see attached verbose boot log.

What is the problem? Is it a hardware issue or something else? I still
have the machine connected to serial console if you need more
information.

Thanks,

Arthur