Ricoh 5A22

From Infogalactic: the planetary knowledge core
Jump to: navigation, search

The Ricoh 5A22 is a microprocessor produced by Ricoh for the Super Nintendo Entertainment System (SNES) video game console. The 5A22 is based on the 16-bit CMD/GTE 65c816, itself a version of the WDC 65C816 (used in the Apple IIGS personal computer).

All of the above-mentioned processors are based on the MOS Technology 6502 family of processors.

Major features

Ricoh 5A22

In addition to the 65C816 CPU core, the 5A22 contains support hardware, including:

Performance

The CPU as a whole employs a variable-speed system bus, with bus access times determined by the memory location accessed. The bus runs at 3.58 MHz for non-access cycles and when accessing Bus B and most internal registers, and either 2.68 or 3.58 MHz when accessing Bus A. It runs at 1.79 MHz only when accessing the controller port serial-access registers.[1] It works at approximately 1.5 MIPS and has a theoretical peak of 1.79 million 16-bit adds per second.

See also

References

  1. Lua error in package.lua at line 80: module 'strict' not found.


<templatestyles src="Asbox/styles.css"></templatestyles>

<templatestyles src="Asbox/styles.css"></templatestyles>