MGH80 - simple Z80 based controller, DIY kit with 82C55. Arduino like Z80 SBC

Description

Hi, thanks for looking.
This is a
diy kit
for a five chip Z80 single-board "computer" - very simple Z80 based "controller" with 8255 for I/O plus a "Z50Bus" expansion connector. I created it to kick-start my Z80 experiments - breadboarding is fun, but sometimes you want the basics to "just work" so you can focus on getting the other parts of your new design working without having to troubleshoot loose wires :)
This is set
includes everything needed to build the system, delivered will be
:
The mgh80 PCB v1.4 (4th revision, design already tested by many users, now features additional LED for port PA0)
All components as per the included components list (excludes the EPROM, wire jumpers, 50pin connector)
Z80 CPU (CMOS 4MHz or faster version)
RAM (CMOS 32k SRAM)
I/O - 82C55 (CMOS)
The ROM socket can be populated with 27C256 EPROM or
28C256
EEPROM (I use my EPROM Emulator - see my other listings).
"Experiments area" on the PCB allows you to add IC or other components (maybe to create more sophisticated address decoder or similar).
The project is
open-source
, documentation including step-by-step assembly instructions can be found on
https://github.com/Kris-Sekula/mgh80
This is a diy project, you will have to solder it yourself - but it's really simple to do. Last two pictures are for reference and show the board assembled and "in action".
I also offer an expansion PCB that brings all the signal to a prototyping area, check out my other listings:
https://www.ebay.com/itm/174671975419
For USA you can choose from either more expensive Priority Shipping or cheaper First Class. International buyers can use eBay International shipping service.
Legal Notice:
The device is intended for use for
ENGINEERING DEVELOPMENT, DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not considered to be a finished end-product fit for general consumer use. Persons handling the product must have electronics training and observe good engineering practice standards. As such the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing related protective considerations, including product safety and environmental measures typically found in the products that incorporate semiconductor components or circuit boards.
The user assumes all responsibility and liability for proper and safe handling of the device. Further the user indemnifies me from all claims arising from the handling or use of the device. Due to the open construction of the product, it's the user responsibility to take any and all appropriate precautions with regard to electrostatic discharge, conducted and radiated emissions.
The device likely generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this equipment in other environments may cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may be required to correct this interference.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES.