Date: Sat, 29 Apr 1995 20:05:03 -0700 From: David Greenman <davidg@Root.COM> To: Peter Dufault <dufault@hda.com> Cc: joerg_wunsch@uriah.heep.sax.de, mrami@mramirez.sy.yale.edu, freebsd-bugs@freefall.cdrom.com Subject: Re: i386/369: (AHA1542A problems) Message-ID: <199504300305.UAA03104@corbin.Root.COM> In-Reply-To: Your message of "Thu, 27 Apr 95 20:32:39 EDT." <199504280032.UAA06290@hda.com>
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>> My aha is: >> aha-1540a >> assy 416006-03 Rev D (on the PCB) >> 420504-00 C >> MCODE E7BC (on the firmware ROM) >> >> I guess the most important part is not the PCB revision, but the >> firmware revision. Some very old AHA154XA's are said to have >> disfunctional scatter/gather, perhaps your adapter is one of them? > >Is anyone else having AHA154x problems? I'm using a 1542C and a 1542B >and did some real heavy testing last weekend (four days of constant file >system thrashing while alternately freezing and thawing the SCSI >bus) without any corruption. > >I'm pretty sure that the bug submitter was using this host adapter >without any problems earlier. The 1542A is broken. It fails to write data if the size of the write is larger than 16K. I've heard that there may be some revisions of the board that work correctly, but all versions of the 1542A that I have tested have this problem. The 1542B and 1542C don't have this problem. -DG
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