Nascom-2 Emulator The Nascom-2 emulator is a work in progress. It is an attempt to fully emulate a Nascom-2 computer. Currently, it fully emulates a Z-80 processor (with one or two minor flaws), as well as some of the Nascom-2 hardware, such as memory, UART, keyboard input and some onboard I/O. The memory is fully … Read more


What’s this all about ? The main idea of this page, is to make the fun of a Nascom-2 available to anyone who’s interested.The Nascom computers were great machines, and is part of the computing history, especially in the UK, Denmark and Sweden. I started this page after having visited Micks page, which goes into … Read more


Nascom nostalgia “Nascom ??? What the heck is that ??”, you might say. It all happened in the days before The Great Distraction. (The Great Distraction, is another story, but here you can see the BIOS chip it contained), Well, a Nascom, or to be more exact, a Nascom-2, was my first (well, not really, … Read more


HardwareYamp1 =yampp-1This was the player I started out with. It uses a Hitachi H8/S 2357F CPU, a 16 bit thingy with 128 kB Flash ROM, a few built in peripherals and a ton of I/O pins. GCC was available for it, so programming would be easy (well, relatively).The only problem with it, was the package … Read more

Categories MP3


Welcome to my yampp project pages ! “So what is yampp ???”, you may wonder if you’re a newcomer here. Well, so it’s another MP-3 Player. So what ? It seems that today, about second site on the ‘net has a description of how to build your own MP-3 Player for the Car, Home, Jogging, … Read more

Categories MP3


Digital Guitar Tuner I’ve always liked real small chips like the Atmel 2323 and PIC 12C508. Despite their size, they contain some real power.The 2323, for instance, can be clocked at up to 10 MHz (and more if overclocked), and will perform at about 10 MIPS.10 MIPS ! … That’s about 8-9 times the original … Read more

Categories AVR


Monster Memory Did you ever think the 512 byte RAM on the At90S8515 was a bit too small ? Ever dreamed about having kiloBytes or perhaps even Megabytes of memory ? Dream no more….. Here’s how to get it. A discussion recently on the mp3projects discussion board, about using DRAM memory with small 8-bit processors … Read more

Categories AVR


Temperature Controller Wine doesn’t like subzero temperatures, and during wintertime, my “winecellar” got pretty cold.There was an electric heating element, but the thermostat was broken, so it was either full burn or nothing. That’s how the temperature monitor/controller came to be.It was an obvious task for a small processor and I’ve always wanted to test … Read more

Categories AVR


(Direct Digital Synthesis) I often need a simple function generator. Just to generate a certain frequency. After all the years I’ve worked with electronics, I still haven’t got me one. Even though I need it now and then, I just couldn’t seem to justify the cost of one.So, standard solution – build one yourself.I designed … Read more

Categories AVR


uCOS-II AVR-GCC port The uC/OS-II Realtime OS, by Jean Labrosse, is great for learning RTOS basics.It comes with a 500 page book which describes it in detail.This is not to say that the OS is a toy. It’s a full grown and very competent OS. It even has a DO178B certification for use in medical … Read more

Categories AVR