That's it, the reader of vintage PAL is functional. It can read old 20-pin PALs found in vintage synthesizers or computers. This makes i...

VALIDATED!  More information at :  The new three output PSU is validated.

A few weeks ago, I presented on this blog the development of a power supply mainly intended to replace those of the old machines. After rec...

In the past, I have had to troubleshoot some Drumulator and more recently SP12. During this process it is necessary to understand the logica...

About two years ago, I was able to acquire a basic EPS16 + for around $150 in perfect condition. However, as it stands, the EPS16 + is not v...

Sometimes it happens that the power supplies of some machines need to be replaced. And sometimes I can't find the ones that suit my need...

The Wichit Sirichote Z80 MICROPROCESSOR KIT clone : The uPF--2. I worked on replacing the Wichit kit with an FPGA version. During this work,...