e either separate modules or integrate RISC and DSP on the same chip but in separate cores.
The 50-MHz Hyperstone E1-32 microprocessor, from Hyperstone Electronics (Konstanz, Germany), was introduced early this year. It takes another route by incorporating a RISC unit that is capable of performing DSP algorithms. The DSP instruction set can work in parallel with the system's ALU. The result is higher flexibility because during latency cycles of the DSP, the ALU can execute other instructions. Additionally, the DSP unit be
comes more robust because it can use all resources (cache, internal memory, I/O, and bus interface) of the RISC processor.
New systems, such as Hypercope's ISDN PC Card, that deploy the Hyperstone E1-32 microprocessor are starting to appear. They capitalize on the microprocessor's autonomous handling of communications, compression, and encryption protocols in a single compact unit.
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Hyperstone's RISC-DSP E1-32.
RISC and DSP in One Architecture
