SSor> A Specially packaged Intel 486DX and a dummy floating point unit (FPU) deSigned aS pin-compatible replacementS for an Intel 80386 proceSSor and 80387 FPU. Since the DX variant haS a working on-chip FPU, a dummy FPU package iSSupplied to go in the 387 FPU Socket. (1995-05-10)