I've got anunofficial installation diskset which is set up specifically for the aic7xxx driver, that will most likely take care of your problem. You can find it at <http://www.debian.org/~adric/aic7xxx/slink/5.1.19/>.
On Fri, Sep 03, 1999 at 07:05:21PM -0700, Tom Kuiper wrote: > While booting an AST Premmia LX P/60 from a resc1440.bin or resc1440-safe.bin > disk (images from the official 2.1 CD-ROM) the booting hangs during the SCSI > initialization. It gets this far: > ... > (scsi0) <Adaptec AHA-294X SCSI host adapter> found at PCI 14/0 > (scsi0) Narrow Channel, SCSI ID=7, 16/255 SCBs > (scsi0) Downloading sequencer code... 412 instructions. > > The same computer boots fine from a previous COL 1.1 kernel on its (SCSI) > hard disk. In that case the SCSI driver is identified as aic7xxx. > > An almost identical machine (more meomory, IDE hard disk) works fine from a > Slackware kernel which is a little over a year old and also uses the aic7xxx > driver.