Hi If anyone is interested in building their own CP/M or other hobbyist home brew computer there are plenty of N8VEM ECB PCBs available. These can be used to build your own system from scratch or to augment an existing home brew computer. The ECB standard is essentially a Z80 bus so these PCBs are easy to interface into most any home brew system. They are also reliable and easy to assemble using only through hole components (no SMT or exotic technologies). Here is the current inventory of PCBs. As you can see there are many boards still available for the ECB systems. http://n8vem-sbc.pbworks.com/PCB-Inventory The ECB PCBs are $20 each plus $2 shipping in the US and $5 elsewhere. Most builders send a PayPal to LYNCHAJ at YAHOO.COM but other arrangements are possible. All of the design information like schematics, PCB layout, KiCAD EDA files, software, build instructions, parts lists, etc are all free and publicly posted on the N8VEM wiki. If funds and/or PayPal is an issue, we can make trades for certain computer parts, electronic components, tools, metals, coins, unused gift cards, shipping materials, scrap, etc. Please let's discuss! Thanks and have a happy holidays! Andrew Lynch