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| Content Provider | ACM Digital Library |
|---|---|
| Author | Leask, D. Xie, H. A. Adams, K. M. Forward, K. E. |
| Abstract | During the development of computer peripherals which interface to the processor via the system bus it is often necessary to acquire the signals on the bus at the hardware level. It is difficult to attach general-purpose logic analysers and in-circuit emulators to a multiple pin bus connector and hence it is not practical to catch all the bus data required to ensure that such signals are in accordance with the bus specification. Hence a given connector specific bus monitor board is a necessary instrument to attach to the system motherboard in order to monitor all bus activities. A connector specific bus monitor board provides an efficient resource with which to study the internal philosophy of system software, the software implementation process for different communication layers, and to provide debugging for hardware developers. The bus monitor board described here is designed to attach to a SUN SBus and is similar to the Transformable Computer, which appeared recently, in that its architecture is reconfigurable via the use of a Field Programmable Gate Array (FPGA). It can be programmed to customise it to various users' specific needs. It differs from the Transformable Computer in that although it can be programmed to function as a coprocessor its primary function is dedicated SBus Monitoring. It is less costly than a Transformable Computer.In this article we describe the prototype of an SBus monitor's architecture and functions, and present the experimental results obtained from a Sun SPARC work station and an Aurora SBox Expansion Chassis, which demonstrate its ability to capture and display data communication and bus activity. Since this prototype board is programmable, it has the potential to provide many special purpose SBus monitors, but also function as a programmable coprocessor. |
| Starting Page | 160 |
| Ending Page | 166 |
| Page Count | 7 |
| File Format | |
| ISBN | 089791743X |
| DOI | 10.1145/201310.201335 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 1995-02-15 |
| Publisher Place | New York |
| Access Restriction | Subscribed |
| Content Type | Text |
| Resource Type | Article |
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