ATX power adaptors for the Amiga and other retro computers. Allows easy access to an ATX replacement supply. The +5V, +12V and -12C supplies are available on screw terminal connectors for easy retro fit. The Multi-purpose design can also supply -5V, the 50/60Hz tick signal and a Power_good signal.
The schematics and PCB files are included here in Eagle CAD format, V7 or later is required to open the files.
The adaptors use a Microchip PIC10F200 microcontroller to debounce the switch and to turn on/off the power. The same micro is used to provide a 50/60Hz 'tick' signal. Accuracy was ~0.5Hz using internal oscillator. A Tag-connect MCP2030 is required to program the device. The ATX_PICV1.zip file has the software. MplabX and XC8 compiler required to rebuild. A hex file is within the archive.
You can buy ready made PCBs from here: http://www.ianstedman.co.uk/Sales/sales.html