I searched on this forum for an answer, but nothing was clear.I overclocked my DC to 240 Mhz by the way it's telling us on dcdev, though I had to find out myself some stuff. Here what I did.
I got a 40 Mhz surface mount oscillator, which is normally opened. In it's datasheet, it was saying that it was working from 4,5V to 6V. I checked all voltage from the IC305, and the only Vin I found was 3,3V, so I assumed the normal CPU clock OUT was 3,3V as well. I decided to try the oscillator separatly from the DC, and I was getting a good 40 Mhz signal with 3,3V even if the theorical minimum was 4,5V. So I soldered the output of the oscillator on in the hole next to the 33 Mhz pin (14) after having cut and raised it, soldered the Vin of the oscillator at pin 6, which was the 3,3V entrance to the IC305, and the ground to pin 1, which is the ground of the IC305 as well. Isolating all wires I used, I taped the oscillator ontop of the IC305, properly isolated from everything around it.
I thought first it wouldn't work, with my luck... But when I tried it, everythint could boot normally, therefore the frequency could pass. I could play my games, with some problems. First, I was never able to access my VMUs, on any slots, any VMUs, even in the Startup screen. I couldn't copy any files from it, neither erase anything, and obviously not write on them. More, some save data were erased :/. Second, I tried to play Quake III Arena with my mouse, and it was completly bugged. My mouse was only working sometimes, and even then, I couldn't really control my clicks or my movements.
So I am asking you, great community of DCEmu
, anybody knows if it's just an effect of overclocking our DC (bad communication with VMU, controllers problems, etc.) or if I did something incorrectly? Thanks already.
