Consoles

Consoles/NEC - PC Engine-TurboGrafx 16/PC Engine Chip Pinouts.md

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+## PC Engine Chip Pinouts
+
+This data was taken from numerous places. Special thanks to the usual PCE crew: Chris Covell, bt garner, Joann, and also to Backup Technik/GameLab magazine, from which I occasionally learned something new.
+
+### Conventions used
+
+Throughout these pages you'll find abbreviations and shorthand terms for a lot of connections. Here's a guide:
+
+| Short | Long          | Short | Long             |
+| ----- | ------------- | ----- | ---------------- |
+| Dxx   | Data (number) | Axx   | Address (number) |
+| /WR   | Write Enable  | /OE   | Output Enable    |
+| /CE   | Chip Enable   | NC    | Not Connected    |
+| I/O   | Input/Output  | RAxx  | RAM pin#         |
+
+- Misc ICs are the two RAM chips (numbered 1, 2, and 12 for both)
+
+### The NetList
+
+Netlist for each chip.
+
+- [Hu6260](Hu6260.md)
+- [Hu6270](Hu6270.md)
+- [Hu6280](Hu6280.md)
+
+### Other Notes
+
+With apologies, I've forgotten what a lot of these notes mean. It's been a long time since I made them.
+
+Oct 2009: This is the textual description of the circuitry supplying the 21MHz clock signal to the Hu6280/Hu6260.
+
+Something to do with the clock circuit?
+
+```
+Clock -> R163 -> C138 -> R117 -> +5v
+      |               +> R118 -> GND
+      |               +> Hu6280 10
+      |
+      +> R164 -> C137 -> R115 -> +5v
+		      +> R116 -> GND
+		      +> Hu6260 2
+```