BBTC

I added BOM files to the project. I provided the parameters for the CPLD and the memory chip.

On eBay:

Z8001P, Z8581

On Digikey:

RAM chip

Other chips:

See your favorite suppliers (Digi_Key, eBay, Ali Express, etc.)

Due to some personel circumstances, I would like to put this project on hold, unless someone would take it over.

The schematic has been modified to allow using of different EPROM. or EEPROMs.

Files available here.

For fun, I'll make a PC104 version of the BBTC. The only DIP chips will be the Z8001, clock generator and the 2 EPROMs. I'll make the EPROM configurable for different chips.

I'll only provide the files, no PCBs.

I just received the PCB from JLCPCB and assembled all the component. I need to program the EPROMs and the CPLD.

It's not the Eipstein files but there are zip files for the floppy disk and some documentation.

See here:

https://www.dropbox.com/scl/fo/lkmmt6tifnuqre9qxl0td/ANvDDy4Do6DVohqB6sxCs2M?rlkey=9jzjq2vstowaqotr132vabyyw&st=4xxfmd3s&dl=0

I found this in this forum:

https://forum.vcfed.org/index.php?threads/z8000-board-for-ibm-pc.1237909/#post-1443617

The PCB is completed and Gerbers files are available. See the Github link.

I made a prototype of the Trump Card a long while ago, but got rid of it.
Now, all the components are easily available and PCB fabs can make your own PCBs for a small price.

I made the schematic in KiCAD and the PCB is under way presently. There's not much components so I should finish within a month.

Meanwhile, you can modify the schematics to make a full retro computing version or a fancier version with many more features.