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42 lines
No EOL
1.3 KiB
Markdown
42 lines
No EOL
1.3 KiB
Markdown
## PC Engine Chip Pinouts
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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.
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### Conventions used
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Throughout these pages you'll find abbreviations and shorthand terms for a lot of connections. Here's a guide:
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| Short | Long | Short | Long |
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| ----- | ------------- | ----- | ---------------- |
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| Dxx | Data (number) | Axx | Address (number) |
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| /WR | Write Enable | /OE | Output Enable |
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| /CE | Chip Enable | NC | Not Connected |
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| I/O | Input/Output | RAxx | RAM pin# |
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- Misc ICs are the two RAM chips (numbered 1, 2, and 12 for both)
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### The NetList
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Netlist for each chip.
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- [Hu6260](Hu6260.md)
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- [Hu6270](Hu6270.md)
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- [Hu6280](Hu6280.md)
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### Other Notes
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With apologies, I've forgotten what a lot of these notes mean. It's been a long time since I made them.
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Oct 2009: This is the textual description of the circuitry supplying the 21MHz clock signal to the Hu6280/Hu6260.
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Something to do with the clock circuit?
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```
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Clock -> R163 -> C138 -> R117 -> +5v
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| +> R118 -> GND
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| +> Hu6280 10
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+> R164 -> C137 -> R115 -> +5v
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+> R116 -> GND
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+> Hu6260 2
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``` |