In fact, I still cannot read the contents of the EMU1 boot disk. On the other hand, I accumulate the validations of parts that have become ...

The last time I posted about the EMU1 motherboard refurbishment, I stopped at the detected problem of the system reset. In fact I was able t...

Well, finally, as expected, I was able to set up communication with port #0 of the SIOs without difficulty. It works with the SIO/2 as well ...

Following on from my last post on the EMULATOR 1, I spent some time trying to get communication on port #1 of one of the new SIOs I recently...

As a follow-up to my last post, after publishing it, I asked myself the question of whether I had actually tested my five new SIO/2s from Ch...

At the moment, I'm still stuck on what I think is the main problem, which is a supposed malfunction of the SIO/2 which manages data writ...

For some time now, and following all the tests that I have been able to carry out on the EMU 1 motherboard, I have come to the conclusion th...

Of course, this may raise a smile, but it wasn't easy to get there! This allowed me to verify that the serial interface was working in b...

After successfully getting the famous 'Hello World' of embedded computing to work, namely making an LED flash, I decided to tackle s...

In my previous post, I stuck to the fact that the EMU1 motherboard was now able to start the floppy drive as well as return the read head to...

In the previous post on this subject, I had stopped at the fact that I had discovered that the wiring of the EPROM to the processor did not ...