The floating point nodes of APE100 are based on the MAD chip. MAD is a custom VLSI pipelined device, driven by a 48 bit instruction word and running at 25 MHz. The Controller supplies instructions to the MAD chips at a rate of two every (12.5 MHz) clock cycle.
The MAD chip, described in detail elsewhere , contains a large register file (128 register) and a floating point ALU and multiplier.
Ape
Collaboration