Schematics for consoles are notoriously hard to come by. You may occasionally find a badly scanned copy of a badly photocopied copy of a badly drawn third party SNES schem, or you might know a guy who knows a guy… But that's more or less it.

I had to take matters into my own hands when it came to the PCEngine, and the results of this crazy note-taking and painstaking trial and error are below for your enjoyment.

And maybe other consoles as well. Add 'em if you got 'em.

• Cartridge pinout
• 2600 Console Schematics (NTSC)
• 2600 Console Schematics (PAL)
• TIA Schematic

• Cartridge pinout
• 5200 Schematics

• Cartridge pinout
• Expansion port pinout

• Memory expansion pinout

• Cartridge pinout
• User port pinout

• Expansion port
• User port (+4 only)

• Expansion bus

• Diagnostic slot
• Expansion slot

Remember that the PCE and CoreGrafx (and, in fact, all PCE hardware) use the same three chips. Even the SuperGrafx uses them, albeit with an extra new trick or two thrown in…

• PC Engine Chip Pinouts
• PC Engine schematic
• PCE Supergrafx schematic
• PC Engine cartridge pinout
• TurboGrafx-16 cartridge pinout

• Cartridge pinout

• Micro to GBA link adaptor

• Cartridge pinout
• SNES APU on PC

• Cartridge pinout

• Cartridge pinout

Aided by a bunch of resources like the GameSX pages, there's a few bits and pieces here.

• Cartridge pinout
• V1 Custom chips
• Expansion port pinout

• Cartridge pinout

• Service Manual SCPH-7500

• Expansion pinout

• Expansion bus
• Cartridge pinout