Microprocessor Design. Nattha Jindapetch December 2008. Agenda. Introduction Types of Microprocessors Instruction Set Design Software tools FPGA microprocessor cores Case studies LABs. Introduction. μP on FPGAs?
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Microprocessor Design Nattha Jindapetch December 2008
Agenda • Introduction • Types of Microprocessors • Instruction Set Design • Software tools • FPGA microprocessor cores • Case studies • LABs
Introduction • μP on FPGAs? • Today’s FPGAs will not be able to implement such a top-of-the-range μP (Intel) with a single FPGA. • But there are many applications where a less-powerful μP can be quite helpful. • In software, or when designed as an FSM, an algorithm like an FFT may ran slower, but usually needs much less resources. • So the μP we build with FPGAs are more of the microcontroller type than a fully featured modern Intel. • You may argue that this can be done with an FSM.
Introduction • μP on FPGAs? • The early version of Xilinx PicoBlaze processor = (KCPSM) Ken Chapman programmable state machine
Introduction • A complete μP design usually involves several steps, such as • the architecture exploration phase, • the instruction set design, and • the development tools.
Types of Microprocessors • Usually microprocessor are classified into three major classes: • General-Purpose Microprocessors or CISC • RISC Microprocessors • PDSPs
General-Purpose Microprocessors • Usually based on CISC (Complex Instruction Set Computer)
RISC Microprocessors • RISC Microprocessors
PDSPs • PDSPs
Instruction Set Design • Addressing Modes • Data Flow: Zero-, One-, Two- or Three-Address Design • Register File and Memory Architecture • Operation Support • Next Operation Location
Software tools • Lexical Analysis • Parser Development
FPGA microprocessor cores • Hardcore microprocessors • Softcore microprocessors
Case studies • T-RISC Stack Microprocessors • LISA Wavelet Processor Design • Nios FFT Design
LABs • LABs
Where to read more … • Uwe Meyer-Baese, Digital Signal Processing with Field Programmable Gate Arrays, Third Edition, Springer, 2007.