Hello Mr. Steve M. Taylor,

Doing a quick search using "MACH FPGA" (faster than the speed of sound - Field Programmable Gate Array's) on www.google.com gave the following:

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http://www.synopsys.com/news/pubs/JHLD/JHLD-099402

METH :current JHLD: System Design and Validation
JHLD-099402 1994:09:01 26K Doc A:0761 R:0761

System Design and Validation

Kurt Baty, WSFDB Consulting
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I tried reading it but soon got bored with it. Maybe you can finding it interesting.

Good luck,

Charles Bannister