From: leop@percy.rain.com (Leo) Subject: Re: BusLogic 445S SCSI and Linux Date: Sun, 4 Jul 1993 00:40:12 GMT
I wrote:
>Is anyone using the BT-445S VESA FAST-SCSI-2 controller with Linux?
>When I boot from the SLS 1.01 a1.3 floppy I get the error "Unable to
>determine Adaptec DMA priority. Disabling board". Is it not
>compatible enough with the Adaptec to work with the usual Adaptec
>drivers? If this is the case, is anyone working on support for the
>445S? It seems to be a much faster board than the Ultrastor 34F
>according to Pc Mag's 7.01 disk harmonic tests.
I got the following email - Thanks Dave!
>I modified the AHA1542 driver to work with the BT-445S. The changes
>were trivial and are in the kernel as of 0.99pl10.
>
>This will not get "full" performance out of the 445 as it uses the
>445's Adaptec compatible interface. This limits DMA to the lower 16M.
>I started beating the 1542 driver into a "native" 32-bit BusLogic
>driver, but haven't had a chance to get back to it.
>
>Dave Gentzel
>gentzel@nova.enet.dec.com
>
>P.S. Please feel free to forward this to comp.os.linux.