|SNC(4)||FreeBSD Kernel Interfaces Manual (i386)||SNC(4)|
NAMEsnc — National Semiconductor DP8393X SONIC Ethernet adapter driver
DESCRIPTIONThe snc driver provides support for the National Semiconductor SONIC Ethernet adapters.
HARDWAREThe 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 NOTESAccessing 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.
DIAGNOSTICSThe 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.
HISTORYThe snc driver was ported from NetBSD by <firstname.lastname@example.org> and <email@example.com>. It first appeared in FreeBSD 4.2. This manual page first appeared in FreeBSD 5.3.
AUTHORSThis manual page was written by <trhodes@FreeBSD.org>.
BUGSCurrently the snc driver only works on the PC-98 architecture. It should probably work on the i386 architecture as well.
|September 4, 2004||FreeBSD|