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This paper presents a concept for an SDRAM controller targeting video processing platforms with dynamically reconfigurable processing units (RPUs). A priority-arbitration algorithm provides the required QoS and supports high bit-rate data streaming of multiple clients. Conforming to common video data structures the controller organizes the memory in partitions, frames, lines, and pixels. The raised level of abstraction drastically reduces the complexity of clients' addressing logic. Its uniform interface structure facilitates instantiations in systems with various clients. In addition to SDRAM controllers for regular applications, special demands of reconfigurable platforms have to be satisfied. The aim of this work is to minimize the number of required bus macros leading to relaxed place and route constraints and reducing the number of critical design paths. A suitable interface protocol is presented, and fundamental implementation issues are outlined.

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Scripting languages have long been utilized by GIS application developers to achieve higher levels of programming and shorter development times. Modern general-purpose scripting languages -like Tclfrk, Perl or Python --allow the smooth integration of various software components, while at the same time providing rich programming capabilities. Increases in processor speed and the development of industry-wide standards are removing obstacles to the proliferation of universal scripting languages in GIS applications.This paper examines the feasibility, architecture and early results of the building of a framework of object-oriented modules for Peri that is designed to provide uniform access to various sources of spatial data from Perl scripts. The framework is independent of any particular GIS application and thus based on the object model detailed in the Abstract Specification by The OpenGIS Consortium. The framework is intended to be used for rapid application development, gluing various software components together and prototyping.