A VME-VMX Interface to FASTBUS via the LeCroy 1821 Segment Manager

An interface between multiple LeCroy Segment Managers [1] and a VME-VMX system is described. The host I/O registers of the 1821, and control registers for DMA have been mapped into the short I/O address space of VME. Transfers from the data memory of the 1821 occur via pipelined DMA to the VMXbus. As many as sixteen Segment Managers may be controlled by a single interface.