PC Engine Duo
Sub-pages
Capacitors (PC Engine Duo)
The NEC Turbo Duo (PC Engine Duo in Japan) is a combined console released in Japan in September 1991 and in North Americ...
Power Up Basics (PC Engine Duo)
The PC Engine Duo-R has a DC 10V (6.3mm x 3.0mm) center positive power supply. To power from the bench simply solder wir...
AV Pinout (PC Engine Duo)
The PC Engine Duo uses the same physical AV port as the Master System 1, Mega Drive / Genesis 1 and Neo Geo AES However,...
RGB Video Output (PC Engine Duo)
It is common to install an 8-DIN Mega Drive 1 / Genesis 1 AV port on the PC Engine / Duo / Duo-R and use the additional ...
Audio Circuit (PC Engine Duo)
The PC Engine Duo has a sound system that mixed audio from various sources. I have yet to reverse engineer the entire ci...
Laser Tuning (PC Engine Duo)
The PC Engine Duo can be tuned with many potentiometers. Setting them strategically and in order is important. The eye...
Laser RF Amp Circuit (PC Engine Duo)
This article takes a deeper dive specifically into the laser diode and photo diode part of the laser assembly, and the R...
Internal Memory Backup RAM (PC Engine Duo)
The save states are stored in internal volatile memory, that is kept alive via a capacitor. If you get an error mentioni...