How to build a z80 computer pdf,raised garden beds table,futon couch bett ikea 50x70,build a desk top shelf - Try Out

Everyone loves the Raspberry Pi and Beagle Board, but what is the fun in buying something that you can build? Where homebrew computers are usually complex bundles of wires and chips, [Mike]’s own single board computer is not.
Yes, 6502 projects are a dime a dozen, but [Mike]’s work with the address decoding logic on the microcontroller is top-notch.
This Z80 development kit was given to me several years ago, without any documentation or information about the origin. This Z80 development kit was built by students in the first two weeks of a course about working with microprocessors. DUO Decimal is programmed in an interpreted language called DUO Decimal Numeric Code (DDNC). There’s even a platformer action game, though graphics on a single 7 segment display are simplistic to say the least. It’s a three-chip computer with only a CPU, RAM, and a microcontroller that is able to emulate the retrocomputers of yore.


Basically, with the addition of a USB to serial adapter, this is a three chip 6502 single board computer, and with the right ROM monitor can emulate an Apple I, Woz monitor included. There are a few remaining chip select lines in his schematic, and with another microcontroller it would be easy to add VGA out, a compact flash adapter, or some other really cool peripherals.
These 8088 computers made the blog rounds by playing Still Alive with a SID chip from a Commodore 64 and a YM2151 FM synth chip.
Check out a video after the break of his computer running the greatest Infocom adventure, Hitchhiker’s Guide to the Galaxy.
The following photo shows a kit he acquired, a bit simpler and presumeably ffrom a previous course year.
Nearly identical to my system, with some enhancemenets (like the slide swicthes and the extra connector on the left side).
Arguably, one of the most important aspects of [Henrik’s] post is that you can easily solder BGAs with cheaply available tools. Not the easiest for typing in long programs, but on par with the switches and blinkenlights of the past.


The system was designed by the teacher, and about 20 students each year used the system, after completing the build, to write programs and do experiments. OSH Park provides the inexpensive high-quality PCBs, OSH Stencils provides the inexpensive stencils, and any toaster oven allows you to solder even the most difficult of components. Not only does he go over the PCB build, he also discusses the bootloader, u-boot, and how to get Linux running. Programs can be entered through the buttons, or save your fingertips by downloading them through the AVR isp interface. The entire C code for the DUO Decimal, including the DDNC interpreter is available on [Jack’s] website.
Although it operates over a serial terminal, [Alexis] pretty much duplicated an Osborne I, only at double the speed.




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