I know what's wrong - why it doesn't work.Īs is the case with many embedded CPUs, a small operating system is required to get the chip to do anything useful. So much so that I just had to register to post this comment. I think that this project is spectacular. If successful, the CPU would be clocked at around 187 MHz, two times the normal speed.Īny thoughts? Maybe I have too much idle time. My goal is to finally achieve the currently unattainable 3X multiplier setting. How would swapping one VR4300 CPU with another be considered an "upgrade"? I've managed to source a 133 MHz-rated NEC VR4300 CPU in the same 120-pin QFP as the N64's CPU. Here is a comparison of the Nintendo 64's CPU and the NEC VR4300. This makes me think it's just an off-the-shelf CPU with the Nintendo logo etched in. We know it's an NEC VR4300, but the question is, is it a custom chip or just a stock VR4300 with the Nintendo logo branded onto it.Įarly N64 SDKs running in the SGI Indy workstation used a stock NEC VR4300. The specific details on the CPU in the N64 have always been conflicting. Now, I want to take this a step further by upgrading the CPU. Years ago, I enjoyed experimenting with overclocking the N64. I've recently taken a renewed interest in the N64, specifically it's hardware. Oh boy, I'm bored again and my soldering iron has been cold for far too long.
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