Apple II Prototyping PCB’s

June 29, 2018

I recently came into possession of a Apple IIe (an enhanced Apple II from the early 80’s) and decided to build a few PCB’s to help get this old warhorse back up in running. The first board  designed was an extender card for the Apples expansion card to make testing and fault finding them a little easier. The second PCB was a prototyping board to allow me to build up various test circuits.

 

Both will be available on Tindie soon

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An update to “List of Homebrew Video Games Consoles”

January 31, 2011

I’ve neglected my list of homebrew video game consoles, so here’s a update:

  • www.xcores.orgMy friend Yvo’s site related to the awesome Xmos chip.
  • mikronauts.comPropCade is a self-contained and affordable Propeller platform for emulating old computers (Z80, 6809, etc) and old game consoles.
  • www.retrode.orgNot a console as such but a handy way feeding games to your SNES or Mega Drive / Genesis emulator from your original cartridges.
  • www.4dsystems.com.auPoGa, a Portable Game Development console looking a lot like a SNES controller.
  • www.chameleon-dev.comChameleon PIC 16-Bit and the Chameleon AVR 8-Bit are yet another Propeller based systems this time with the addition of a standard Microchip PIC or Atmel AVR microcontroller.
  • www.fpgaarcade.comA site dedicate to recreating gaming hardware from the past in modern programmable FPGA devices.
  • www.lucidscience.comA beautifully documented insight to designing and building your own classic console
  • www.microvga.coma design offering a low-cost Microcontroller to VGA interface
  • www.ladyada.netA new system from LadyAda offering a 320×240 TFT color display with resistive touch screen.
  • rossum.posterous.comRBox: A diy 32 bit game console for the price of a latte
  • www.linusakesson.net linusakesson “craft”

the original list is still here:


The ZX Spectrum ULA: How to design a microcomputer

December 29, 2010

I’ve been following Chris Smith’s zxdesign.info web site for a number of years. His redesign of a ZX Spectrum ULA using only logic IC’s was an awesome achievement.

In addition he’s wrote a wonderful account “The ZX Spectrum ULA: How to design a microcomputer” on the forerunner of programmable logic – the Uncommitted Logic Array (ULA). I was lucky enough to get his book as an early Christmas present and I found it a great read.