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标题: SFC超频资料 [打印本页]

作者: nvnv-sunny 时间: 2012-9-28 16:21 标题: SFC超频资料

在网上历史库里面找到的SNES超频资料，好玩了。转自：http://www.99-gtp.com/ucm/snesoc.htm（已经打不开）

Welcome to UCM's Super Nintendo overclocking guide! It has taken me a while, but I have finally managed to overclocked the SNES's CPU. Before we begin, there are a few tools you will need to perform this mod.

Tools you will need:

9.5 mm security bit (to open SNES)
x-acto knife
soldering iron and solder
crystal oscillator
Now that we have what we need, you need to open the SNES to where you are looking at the motherboard. There are 2 parts of the board we will be dealing with: the CPU, and the voltage regulator (located on the left-rear behind the cartridge port). Below is a picture of where the CPU is located.

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This CPU is manufactured by Ricoh, and is a modified version of the WDC 65c816 that runs at a maximum speed of 3.58 MHz (software selectable multiplier). We will be going by the maximum speed for sake of confusion

. The SNES's cpu internally divides whatever clock it recieves by 6, in this case, it recieves a 21.477 MHz clock signal. What we are going to do is disconnect the 21 MHz signal, and connect a 31 MHz crystal oscillator resulting in a maximum speed of 5.1 MHz! Quite a speed boost!

We will need to disconnect the CPU's clock pin from the board; this is pin 48 (see below).

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This can be tricky to do, you will definitely need to have some robust soldering skills, and a roll of desoldering wick (in case you bridge some pins in solder). The easiest way to do this is to press your soldering iron at the base of pin 48, and then use the xacto knife to CAREFULLY raise the pin. These pins are very fragile, and breaking this pin will render the SNES useless!

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Now we need to connect our crystal oscillator to a +5V power source, and suitable ground. You can pull +5V from the voltage regulator's output pin. looking at the front of the regulator, this is the pin on the far right (unit has 3 pins). I usually connect my ground to a screw that hold the RF shielding on. below is a chart of how your oscillator should be wired.

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Once you've checked to make sure your oscillator has a good power source, we will run a wire from the clock output pin on the oscillator, to pin 48 on the CPU.

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Now power on and test! you should have an overclocked Super Nintendo. NOTE:5.1 MHZ IS GLITCHY. I AM IN NEED OF SOME OSCILLATORS BETWEEN THE SPEEDS OF 23 AND 25 MHZ. ANYONE WILLING TO DONATE CAN CONTACT ME, ROBERT IVY. I WILL BE SURE TO ADD YOU TO THIS PAGE, AS YOU WILL BE AN IMPORTANT PART OF SNES OVERCLOCKING DEVELOPMENT. THANKS!

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is scattered all over the screen

作者: hypergiant 时间: 2012-9-28 17:00

超频了，打怪升级快些？

作者: 电音痴汉 时间: 2012-9-28 17:04

帧数足一些吧？

作者: heng20 时间: 2012-9-28 17:49

看不懂（没有文化a~！）

作者: 反索倒史 时间: 2012-9-28 19:09

超到了5.1 MHZ,性能赶上NEOGEO,接近3DO....

作者: 燕山隐士 时间: 2012-9-28 19:20

引用:

原帖由 反索倒史 于 2012-9-28 19:09 发表
超到了5.1 MHZ,性能赶上NEOGEO,接近3DO....

比ps3强弱于n64

作者: werety 时间: 2012-9-28 20:18

DIY作者那台绿透N64主机上，插的卡带好像是“完美黑暗”

作者: 9562 时间: 2012-9-29 18:07

楼主能简单翻印一下吗，我很懒

作者: 昵称无效 时间: 2012-9-29 18:54

posted by wap, platform: iPhone

超sfc主频意义何在，只会造成游戏运行速度过快
超一下superFX倒是很有用，本来3D游戏帧数不足的如星际火狐、毁灭战士，会流畅很多很多

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