The
ep device driver supports the 3Com EtherLink III family of Ethernet cards.
The 3c515 is an ISA 10/100 card with DMA capability. The chipset is similar to that of the 3c905, with some changes to make it work with the more limited ISA bus address space. This card is supported, although DMA is not used.
The EISA and PCI 3c59x devices use an older DMA engine which is not capable of multi-segment DMA. DMA on these devices is not used.
The 3c529 is a MCA device, and doesn't support DMA.
The PCI 3c90x devices have multi-segment DMA capability, which is not supported by the
ep driver. To use the DMA capabilities of these cards, the
ex(4) driver must be used.
The PCI 3c90xB devices are not supported by the
ep driver, as they do not include support for programmed I/O. These devices are supported by the
ex(4) driver.
The 3c575 is a CardBus device, and is supported by
ex(4) driver.