Initial import

README.md

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+VaxCheck
+========
+
+Calculate (and optionally write) VAX ROM checksums
+
+The method used is a simple rotate-left-and-add over the
+bytes of a ROM image, excluding the final checksum byte.
+
+This is done on a per physical ROM basis, not for the
+whole ROM memory space as a whole, so there are four
+checksum bytes, one per physical ROM.