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

     cs	-- ethernet device driver

     device cs0	at isa?	port 0x300 irq ?
     device cs1	at isa?	port 0x300 irq 10 iomem	0xd0000

     The cs driver provides support for	ISA ethernet adapters based on the
     Crystal Semiconductor CS8900 and CS8920 NICs.  These devices are used on
     the IBM EtherJet ISA adapters and in many embedded	applications where the
     high integration, small size and low cost of the CS89x0 family compensate
     for their drawbacks.

     The cs driver will	obtain configuration parameters	either from the	con-
     figuration	entry or from the card.	 Parameters specified in the configu-
     ration entry will be used if present; the card may	be soft-configured so
     these may be any valid value.  Adapters based on the CS8920 normally of-
     fer PnP configuration and the driver will detect the IBM EtherJet and the
     CSC6040 adapters automatically.

     Note that the CS8900 is limited to	4 IRQ values; these are	normally im-
     plemented as 5, 10, 11 and	12.  The CS8920	has no such limitation.

     Memory-mapped and DMA operation are not supported at this time.

     cs%d: full/half duplex negotiation	timeout	 The attempt to	negotiate du-
     plex settings with	the hub	timed out.  This may indicate a	cabling	prob-
     lem or a faulty or	incompatible hub.

     cs%d: failed to enable <media>  The CS89x0	failed to select the nominated
     media, either because it is not present or	not operating correctly.

     cs%d: No EEPROM, assuming defaults	 The CS89x0 does not have an EEPROM,
     or	the EEPROM is hopelessly damaged.  Operation will only be successful
     if	the configuration entry	lists suitable values for the adapter.

     cs%d: Invalid irq	The IRQ	specified in the configuration entry is	not
     valid for the adapter.

     cs%d: Could not allocate memory for NIC  There is a critical memory
     shortage.	The adapter will not function.

     cs%d: Adapter has no media	 The adapter is	not configured for a specific
     media type.  The media type will have to be manually set.

     This is a %s, but LDN %d is disabled  The PnP probe code found a recog-
     nised adapter, but	the adapter is disabled.

     failed to read pnp	parms  A PnP adapter was found,	but configuration pa-
     rameters for it could not be read.

     failed to pnp card	parametars  The	parameters obtained via	PnP were not
     accepted by the driver.  The adapter may not function.

     The CS89x0	family of adapters have	a very small RAM buffer	(4K).  This
     may cause problems	with extremely high network loads or bursty network
     traffic.  In particular, NFS operations should be limited to 1k
     read/write	transactions in	order to avoid overruns.

     arp(4), netintro(4), ng_ether(4), ifconfig(8)

     The cs device driver was written by Maxim Bolotin and Oleg	Sharoiko.
     This manpage was written by Michael Smith.

BSD				 July 20, 1998				   BSD


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