Custom Instruction examples

The tutorial is awesome! Thanks a ton!

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originally posted by rdturner@Sep 21 2005, 03:21 PM

i have created a set a custom instructions that demonstrate the various different types of custom instructions:

here is a quote from the intro in my tutorial:

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introduction

... this tutorial came bundled with several custom instruction examples which cover many different types of possibilities; such as, internal registry options, i/o options, and stalling options. examples below use a multiply accumulate (mac) example from a basic instruction to one that takes advantage of many sophistication options. a mac is an operation which takes an input and multiplies it with its current value and then accumulates it. the basic functionality of a mac can be found in an included custom instruction user guide on page 1-11. a taylor series calculator and a “blinker” custom instruction that interacts with the leds are also included. the taylor series calculator can be used to approximate functions while the led blinker demonstrates io with custom instructions. ...

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Unlike many other custom instructions, some of the ones in this bindle are non-stalling, which speeds up computation, and some that are IO capable.

Note: with the Altera custom instruction guide the file size was too large. So, you can find it at

http://www.altera.com/literature/ug/ug_nio...instruction.pdf (http://www.altera.com/literature/ug/ug_nios2_custom_instruction.pdf)

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