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Note that on Challenge-S only one DMA-capable adapter may inhabit a GIO

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slot. Explain further that which slot may be inhabited depends on the
adapter in question.
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rumble 2006-07-20 13:07:16 +00:00
parent 3c6f48ffcd
commit c870f3705b
1 changed files with 12 additions and 1 deletions
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13
share/man/man4/man4.sgimips/gio.4
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@ -1,4 +1,4 @@
.\" $NetBSD: gio.4,v 1.8 2006/03/05 00:08:32 rumble Exp $
.\" $NetBSD: gio.4,v 1.9 2006/07/20 13:07:16 rumble Exp $
.\"
.\" Copyright (c) 2002 The NetBSD Foundation, Inc.
.\" All rights reserved.
@ -70,3 +70,14 @@ The
.Nm
driver first appeared in
.Nx 1.5 .
.Sh BUGS
On Challenge-S systems only one
.Nm
expansion slot may be used with a DMA-capable device. This is due to
the fact that the IOPLUS board uses one of the slots' DMA channels for
the additional sq(4) ethernet. Which slot to use with a DMA-capable card
depends on the card in question. HPC1.5-based cards, such as the E++
Ethernet Adapter and GIO32 SCSI Adapter, must be placed in slot #1 (next
to the memory banks). All other DMA-capable boards must be placed in slot
#0 (closest to the edge of the case). In either case the other slot may
only accomodate a PIO card.