SN(4)                   NetBSD Kernel Interfaces Manual                  SN(4)

sn -- National Semiconductor DP83932 (SONIC) based Ethernet device driver
arc sn0 at jazzio? mac68k sn* at obio? sn* at nubus?
The sn interface provides access to a 10 Mb/s Ethernet network via the National Semiconductor DP83932 (SONIC) Ethernet chip set. Each of the host's network addresses is specified at boot time with an SIOCSIFADDR ioctl(2). The sn interface employs the address resolution protocol described in arp(4) to dynamically map between Internet and Eth- ernet addresses on the local network.
arc The sn driver supports on-board JAZZ based SONIC interfaces found on Acer PICA and NEC machines. mac68k The sn driver is currently known to support the following NuBus cards: Apple LC Twisted-pair (part #820-0532-A) PDS card Cayman Gatorcard PDS Dayna DaynaPort/E30 In addition, the sn interface supports the following interfaces: on-board Ethernet for non-AV Quadras on-board Ethernet for 500-series PowerBooks Apple CS Ethernet Twisted-pair card for Comm Slot found on LC575, Quadra 630, LC630, and Performa 580.
sn%d: transmit FIFO underrun sn%d: receive FIFO overrun sn%d: receive buffer exceeded sn%d: receive buffers exhausted sn%d: receive descriptors exhausted These messages indicate that the interface gets errors (due to heavy load etc.) and reinitialized.
arp(4), inet(4), netintro(4), ifconfig(8)
The sn interface for mac68k, which was derived from a driver for old NetBSD pica port, first appeared in NetBSD 1.3. Jason Thorpe has rewritten a new machine independent SONIC driver which uses bus_dma(9) and bus_space(9) APIs after NetBSD 1.5 release, and arc has been switched to using the MI driver. mac68k has been also switched to using the MI driver after NetBSD 4.0 release. NetBSD 5.0 June 20, 2007 NetBSD 5.0

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