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Konami 051316 reverse-engineering
🕑 Added 2022-10-07 06:06:43 +0000 UTCI've just finished reverse-engineering the Konami 051316 chip.
This one is a ROZ (rotation/zoom) plane generator, which is visually equivalent to the SNES' famous Mode 7. It was used by:
* Ajax
* Bottom of the Ninth
* Chequered Flag (in pair)
* Dive Bomber Squad (in pair)
* Hot Chase / WEC (in pair)
* Over Drive (in pair)
* Rollergames
* Tail to Nose
* Ultraman (3 of them !)
* '88 Games
It's a rather simple chip for such a remarkable video effect.
MAME had everything right except for two undocumented configuration bits that enable tile flipping. These are apparently used by some games since MAME's source mention their existence.
Some other undocumented configuration bits are present but they're either timing or test related, so they really have no use for emulation.
The first half of the new project's goal is now complete. Next is the k053260 sound chip, on which I'll start working in November.
The svg trace, complete gate-level schematics and a verilog implementation along with a simple testbench can be found here: https://github.com/furrtek/VGChips/tree/master/Konami/051316
Comments
Thank -you- for willing to make other Konami cores !
JOTEGO
I love this update. Thank you so much. We'll give priority to the AJAX core after this!
John Fletcher
Thank you, keeper of the tracks.
