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qSoC – The OR1200 CPUCPU (from: https://www.flickr.com/photos/2top/10402551773/)

qSoC – The OR1200 CPU

Published by chaos on June 28, 2016

The OR1200 is a RISC-type, Harvard architecture (separate instruction and data buses) synthesizable CPU core, written by the OpenCores community. It can be configured with a number of optional components, such as cache, MMU, FPU, timer, programmable interrupt controller, debug unit, etc. For sake of simplicity, I decided to disable most of the optional components, except the hardware multiplier and divider, all other features will be added if/when needed. The OR1200 has standard GNU tools available,…

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qSoC, or how to build an FPGA SoC from scratchSoC

qSoC, or how to build an FPGA SoC from scratch

Published by chaos on April 29, 2016

Introduction I’d like to talk about how to build a fast, lean, clean SoC machine. What is an SoC? An SoC, or a System On a Chip, is, simply put, a microprocessor with some common peripherals attached, like ROM, RAM, SDRAM controller, UART, SPI, GPIO, and other I/O ports or protocols, all tied up into a system. An SoC is not unlike a microcontroller, which also has a microprocessor bundled with some sort of memory…

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The BoingBall, Part 2

Published by chaos on October 29, 2014

So, we have rendered frames of our BoingBall, as described in Part 1. What you want to do next is check if the animation is seamless – that is, if it loops without glitches. Best way is to convert the frames into a .gif or .avi animation (in my experience GIF works better) with your favorite photo / video editor. You will also need to reduce the number of colors of your frames, I used just…

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The BoingBall, Part 1

The BoingBall, Part 1

Published by chaos on October 28, 2014

I’ve received some questions about how I made the new minimig logo with the rotating checkered ball, so I thought I’d write something about it for my first post. The BoingBall is quite famous in the Amiga land, as it was featured in one of the first demos made for the Amiga computer to demonstrate its capabilities at the Consumer Electronics Show in January 1984. It was later used as an official logo of the Amiga. Its roots…

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