Ricoh 5A22
From Wiki-Scene
The Ricoh 5A22 was a CPU designed for Nintendo's Super Nintendo/Super Famicom entertainment and game consoles. The 5A22 is based on WDC's 65C816 CPU core with additional features implemented.
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Added Features
In addition to the 65C816 CPU core, the 5A22 contains additional support hardware, including:
- Controller port interface circuits.
- Circuitry for generating NMI interrupts on Vblank.
- Circuitry for generating PSG sound with included 2A03 core.
- Circuitry for generating IRQ interrupts on screen positions.
- A DMA unit, supporting two primary modes.
- Multiplication and division registers
