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National Semiconductor DP8393X SONIC Ethernet adapter driver.

Chapter

September 4, 2004

SNC(4) BSD/i386 Kernel Interfaces Manual SNC(4)

NAME

snc — National Semiconductor DP8393X SONIC Ethernet adapter driver

SYNOPSIS

device isa device snc

DESCRIPTION

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.