Subject: port-i386/2284: No warning DMA capable ISA scsi controllers with > 16Mb.
To: None <gnats-bugs@NetBSD.ORG>
From: None <firstname.lastname@example.org>
Date: 04/01/1996 05:58:58
>Synopsis: No warning for DMA capable ISA scsi controllers with > 16Mb.
>Responsible: gnats-admin (GNATS administrator)
>Arrival-Date: Mon Apr 1 09:35:01 1996
>Originator: David Brownlee
People using DMA capable ISA scsi controllers with > 16Mb in their PC
(or 16Mb with bios remapping) have no warning as to why they are being
Bounce buffers will fix this when they come, but in the meantime
there should be mention of it in the docs.
Boot a machine with > 16Mb with a 1542 or similar, grow frustrated,
mail mailing list, start another debate about bounce buffers, consume
more time from many people on the lists, gain a bad impression of a
system that not only doesnt support your hardware (yet), but cant
even give you any reason _why_.
The installation notes (+supported hardware?) should mention the
problem, plus a quick check in the drivers' attach routines to panic
with an appropriate message if >16Mb is detected would be a _real_
Of course taking the existing available 'hack' to permit bounce
buffers and adding it into the i386 port as an acknowledged stopgap
measure until cgd has sufficient time to fix bounce buffers in a MI
fashion would be a much 'better' solution from the viewpoint of users.
What was it Chris said about what researchers _really_ want from an