snc(4)

snc4

National semiconductor dp8393x sonic ethernet adapter driver

Usage

device isa device snc

Overview

The snc driver provides support for the National Semiconductor SONIC Ethernet adapters.

Hardware

The snc driver supports the following cards:

  • National Semiconductor DP83934AVQB

  • NEC PC-9801-83

  • NEC PC-9801-84

  • NEC PC-9801-103

  • NEC PC-9801-104

  • NEC PC-9801N-15

  • NEC PC-9801N-25

  • NEC PC-9801N-J02 PCMCIA

  • NEC PC-9801N-J02R PCMCIA

The snc driver also includes support for the National Semiconductor NS46C46 as 64 * 16 bits Microwave Serial EEPROM.

Implementation notes

Accessing SONIC card data structures and registers as 32 bit values makes code endianness independent. The SONIC is however always in big-endian mode so it is necessary to ensure that data structures shared between the CPU and the SONIC card are always in big-endian order. The snc driver supports the PC-98 C-Bus, and PnP buses. Support is also provided for the legacy C-Bus.

Diagnostics

The following driver specific error messages may be reported:

snc%d: snc_nec16_register_irq: unsupported irq (%d)

The card returned an IRQ which is not supported by the driver.

snc%d: invalid packet length %d bytes

An attempt to transfer a data packet failed due to an invalid packet length.

History

The snc driver was ported from NetBSD by Motomichi Matsuzaki ⟨[email protected]⟩ and Hiroshi Yamashita ⟨[email protected]⟩. It first appeared in FreeBSD 4.2. This manual page first appeared in FreeBSD 5.3.

Authors

This manual page was written by Tom Rhodes ⟨[email protected]⟩.

Bugs

Currently the snc driver only works on the PC-98 architecture. It should probably work on the i386 architecture as well.

From freebsd-manpages 6.0-5 in Debian 4.0 (Etch). Parsed by carta from the page's mdoc source.