![]() I don't know if it's a better choice over Mayumi v4 for a PU-18. Apparently PSNee is the only modchip code that is 100% stealth on PU-8 boards. I used the version with the arduino nano but pyroesp made a new version with a custom board. Hard reset mod by pyroesp (feasable on a PU-18). scph-7502 bios (I didn't like the dull-looking spch-1002 bios, also the spch-7502 bios has sound scope) There's definitely a significant improvement in sound quality when using an added SPDIF output. ![]() SPDIF output mod (designed by citrus3000psi, feasable on a PU-18, FBX's article about it). Dual oscillator mod (feasable on a PU-18 but there's no available traces like on a PU-8, you need an additional board). KSM-440BAM (psone laser unit, quieter and more reliable, however it doesn't fit on a 5552). scph-7502 power supply board mod (not needed on a PU-18) with blue led I have an scph-1002, here is the list of mods I did for it : I don't see how a cable can fix the resulting sync problem which stems from the GPU.ĭo you know if you have any mods (NTSC / PAL) for the 5552 - PU-18? More info on the the double oscillator mod :Īfaik an RGB cable will only give you colors. Plus there's the RCA jacks and the ability to add the laser assembly of a slim psone without any hacking job (besides swapping the top cover). This is the only way of running PAL and NTSC games on the same console at the exact right speed. ![]() You can fit an NTSC oscillator next to the PAL oscillator. That's why the scph-1002 is my favorite revision. Wanderer wrote: ↑ December 12th, 2019, 8:12 am A more subtle effect is that it also introduces a timing skew between timescales based on the CPU clock and ones based on counting vblanks - the Konami rhythm games smf mentioned are a good example they have an audio track that's locked to the CPU clock (the SPU is clocked from the same source as the CPU) but the visuals are synchronized to the display refresh so the timing gets more and more out of sync with the audio as you play the game. As a result, it runs slightly slow.įor most games, this simply doesn't matter and although there is slowdown it's imperceptible to the person playing the game. ![]() When you put a PAL console into NTSC mode, the chip switches over into its 60Hz operating mode, but it's still being clocked using the same 53.203425MHz crystal it was using in PAL mode. So the actual difference is quite small - about 0.1%. GPU: 53.203425MHz (selected because it's 12x the 4.43361875MHz PAL color subcarrier) For example, the PS1 has two different clocks - for a PAL unit they are:ĬPU: 67.7376MHz (the actual CPU core is clocked at half this rate) TriMesh wrote:The short answer is that the NTSC and PAL versions have the same chips in them, but slightly different clock frequencies. ![]()
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