N64 CPU

The R4300 CPU is part of the MIPS R4000 family of processors. The R4300 consists of an execution unit with a 64-bit register file for integer and floating-point operations, a 16 KB instruction cache, an 8 KB writeback data cache, and a 32-entry TLB for virtual-to-physical address calculation. The Nintendo 64 game runs in kernel mode with 32-bit addressing. 64-bit integer operations are available in this mode. However, the 32-bit C calling convention is used to maximize performance.

For more information on the R4300 and the operating system control of the CPU see the MIPS Microprocessor R4000 User’s Manual, and Section 6, “Operating System Overview”.

Copyright © 1999 Nintendo of America Inc. All Rights Reserved Nintendo and N64 are registered trademarks of Nintendo Last Updated January, 1999