On Thu, 3 Jan 2002, James K. Lowden wrote:
> I think you're out of luck with the 3C515, friend.
>
> man ep:
>
>      The 3c515 is an ISA 10/100 card with DMA capability.  The chipset is sim-
>      ilar to that of the 3c905, with some changes to make it work with the
>      more limited ISA bus address space.  This card is not currently support-
>      ed.

It's supported in NetBSD-current though. From the CHANGES file:
        ep(4): Finally made the 3Com 3c515 10/100 ISA Ethernet card
                work.  [thorpej 20010726]

and man 4 ep:

     The 3c515 is an ISA 10/100 card with DMA capability.  The chipset is sim-
     ilar 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.
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