PC Engine
The PC Engine, or TurboGrafx-16 in America, is a game console developed by NEC.
Contents
Models
NEC released a huge number of different models of the hardware over its lifespan. The basic PC Engine console can be expanded to use a CD-ROM unit, and NEC also launched different revisions of the console with CD hardware integrated.
Stock hardware does NOT offer RGB output, however RGB mods have been available for some time. These vary in quality and design. Some models can also output RGB via an adapter connected to the back of the console, though using an adapter like this prevents a CD-ROM unit from being attached.
Models tested
RGB Modded Supergrafx and Super CD-ROM2. TurboNanza modded Supergrafx (with S-video on the Morph) Supergrafx and Krikzz’ EDFX TG-16 / PCE AV Adapter (OSSC Pro/Morph)
XRGB-2 Specific settings
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XRGB-3 Specific settings
When using an XRGB-3 with an RGB modded console, there is usually some distortion present on the top few rows of pixels. To correct or at least reduce this problem, AFC needs to be set to manual with a value of 4 to 6.
XRGB-Mini Specific settings
For RGB modded PC Engines, depending on the model of PC Engine and the RGB modification done, you may need to adjust the sync level setting or use an external sync cleaner. The consoles aspect ratio may be a little squashed by default, so applying some horizontal zoom may be necessary.
OSSC Specific settings
If you experience screen blanking when using your PC Engine hardware with the OSSC, try setting the analogue sync LPF to 2.5Mhz.
Using line triple mode is highly recommended if your display supports it, line double mode may squash the PC Engine's aspect ratio slightly.
Super SD System 3
The first generation Super SD System 3 devices require specific settings to work with the OSSC. Use the settings below in order to use the unit together with your OSSC.
Sync options -> Analogue Sync Vth to 101mV
Sync options -> Vsync Threshold to 11.84
TerraOnion have promised to exchange these early faulty units so hopefully this won't be an issue in the future.
OSSC Pro Specific settings
No special settings appear to be required. Follow the OSSC guidelines if using an older Super SD System 3.
Morph_4K Specific settings
For RGB mods/adapters, some tweaking of sync settings may be required to get a stable image. Try the following settings and tweak as necessary.
Input Menu->Input Select->(whichever port your console is connected to)->RGB(S) (75 ohm sync levels)->Sync submenu
- SOG LPF: 2.5 MHz
- Threshold: 146.8 mV
- HPLL Pre-Coast: 4
- HPLL Post-Coast: 4
This system is supported in the profile pack, and auto sampling can be enabled by loading an official PC Engine profile. Remember loading a profile will reset any modifications you made to sync settings. Save to a separate profile once you have added any necessary changes.
