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board. The DE425 is basically a DECchip 21040 on an EISA board, plus a Cool Address Decoder Hack which maps the PCI configuration space registers into EISA I/O space, interleaved with the Tulip CSRs, which are spaced further apart than on the PCI versoin. This is currently *untested* until the DE425 boards that folks have promised me arrive. But, it should work, since the 21040 works.