Reviving a Sony CDP-991, Part 3
In the last part, I made the tray operational. It’s a precondition for this part: Inserting a CD.
Reviving a Sony CDP-991, Part 2
In the first part, I powered up my CDP-991 again after 15 years. Next step: Open the tray.
Reviving a Sony CDP-991
Let’s do a hardware related project for a change. A few days ago, I found my good old CD player from the time when …
Recovering old ZX Spectrum tapes, Part 2
The ZX Spectrum was a comparable cheap home computer, and thus the tape loading and saving mechanisms have not been very …
Optimizations
On a slow processor like the Z80, it is essential to think about execution time. Often a clean approach is too …
