Abstract
The XL-100S is a microprogrammable device based on the Am2900 family of bit slices and designed for use in the multimaster environment of an XL System Crate. The processor conforms to the EUR 6500 CAMAC standard and can access up to 4 Mbyte of memory and 7 CAMAC branches. Processor operation, which is a sequence of predefined microcommands fetched from a 32-bit wide control store with capacity up to 64 kwords, can be initiated by any of eight external requests. The architecture of the XL-100S allows it to emulate almost any mini- or micro-computer including floating point operations. The processor can be used for: fast physical event filtering and data preprocessing, flexible apparatus control, organization of sophisticated DMA transfer modes, etc. The device with 4 kwords of control store is housed in a single width CAMAC module.
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