The NES was Nintendo’s smash hit console of the 1980s, the international version of their Japanese Famicom system. It wasn’t a particularly complex device, so it was the subject of many clones back in the day. More recently, it has enjoyed a new life thanks to “NES on a chip” systems. It’s one of these that [Poking Technology] has, real rock bottom for the console built into a cheap phone case.
Reverse engineering the thing starts with disassembly, upon which the brain of the unit is revealed as a mystery resin blob chip. There’s a ROM which, with a little effort, [Poking Technology] dumps. ROM analyses in situ requires quite a bit more effort. He identifies the black blob as a VT369 NES-on-a-chip and thus deduces that part of the device’s code is hidden in the chip’s 4K ROM. Some investigation and code injection allows him to control the backlight, from which he can dump the internal ROM by flashing it on and off.
The video is a very long one, but along the way you can learn a lot about the operation of these devices. What strikes us is that these ICs may be a NES, but just like the original, they have potential as a versatile computer beyond Mario. We won’t be ordering a NES phone case, but we can see they have potential.
Thanks [Anebix] for the tip!
This articles is written by : Fady Askharoun Samy Askharoun
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