Retro computing µPF--2, the first real start.

The implementation of the peripherals being different on this board, I had to modify the VHDL code of the system that was working on the generic FPGA board. It took me much less time than I expected to achieve a functional result:

For the moment I have only tested the displays. The next step will consist of checking the operation of the USB serial com port as well as the communication with the keyboard. But for now, the new µPF--2 board will be able to replace the generic FPGA board on my desk and it feels good because it's been a few months now since I started porting µPF--1 to an FPGA board:

Retro computing : µPF--2, a µPF--1 clone.

The project to recreate the µPF--1 kit is progressing. I now have a complete hardware system that will allow me to implement the FPGA code emulating the µPF--1:

More info here!

µPF--2 : Final Beta Version

By reworking the layout of the components, I finally had enough room to implement all of the extension connector signals. All I have to do now is to create the printed circuit board:

The final circuit is quite large in the end, given all the elements that are implemented.

Eventually, I hope to be able to operate these various original expansion boards knowing that they are intended for a µPF1P and not a µPF1 or 1B :

Printer & I/O boards.

Interesting informations on this subject are available on this site: https://fjkraan.home.xs4all.nl/comp/mpf1/

uPF--2? In fact, an uPF--1 in FPGA!

The concept of the Z80 development kit based on an FPGA board is validated :

more info here: https://sillycony.blogspot.com/