Help collecting pictures of CPU and PPU packages
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Re: Help collecting pictures of CPU and PPU packages
> Does anyone know what this is?
Pirate Quality?
I have another batch of chips on the depackage on the way.
Pirate Quality?
I have another batch of chips on the depackage on the way.
- Individualised
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Re: Help collecting pictures of CPU and PPU packages
UM6558 is a PPU that outputs a digital video signal (not RGB, but a 6-bit palette value; this means PPU features like colour tints are not supported at all). UM6559 is a custom chip that converts a such format into an analogue SECAM signal.
Their functionality are documented on the wiki but I don't think anyone has tried to do much with them. I can definitely see the UM6558 being used in a cheap RGB or HDMI mod if they're not rare.
Re: Help collecting pictures of CPU and PPU packages
They are tragically quite rare. Close to a decade ago, I'd seen a random link of someone who'd found a small handful of 6558s and was selling RGB famiclones using them.
- Individualised
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Re: Help collecting pictures of CPU and PPU packages
Oh, the functionality is well-known! Other than whether they support 50/60 Hz switchable, or if the 4 EXT pins are still EXT
The lower 6 bits of the "color data" bus contain the 6 bits of the palette index from the palette RAM (D0-D3 inverted, D4-D5 verbatim), before it goes to the composite modulator region of the die. viewtopic.php?p=194423#p194423
The lower 6 bits of the "color data" bus contain the 6 bits of the palette index from the palette RAM (D0-D3 inverted, D4-D5 verbatim), before it goes to the composite modulator region of the die. viewtopic.php?p=194423#p194423
Re: Help collecting pictures of CPU and PPU packages
https://drive.google.com/drive/u/0/fold ... dwbgEAuS1P
GM, HA, P03, SENITON, 6572, 6528, 6557, 6558 folders. From the DSLR.
GM, HA, P03, SENITON, 6572, 6528, 6557, 6558 folders. From the DSLR.
Re: Help collecting pictures of CPU and PPU packages
I posted these to the CPU revisions page already. But I haven't gotten to the PPUs just yet. So here's full board pictures.
Weird clone with a CPU marked XYZ-6783. From my notes on the CPU revisions page:
--
This other one's a really weird console. I don't usually expect much from clones in terms of expansion audio. But this one... wow! It perfectly matches how mixing sounds in NSFPlay. Shame that the 7805 just overheats after less than 5 minutes, though. Additionally, it doesn't even mix the audio right. Composite output gets only the APU for some reason? RF works fine, it seems, though. CPU: Standard fare UMC-based CPU clone. Duties swapped, DPCM is fine, blah blah blah. It's a bit weird though. Why is the CPU marked "6538N" as if it were a UMC PPU?
PPU: This thing. Oh my god. It's just stupidly bizarre. You'd expect, from well, any average UMC-based (probably) PPU that the video signal is somewhat "oversaturated. This PPU is the exact opposite, but weirdly deliberately. The PPU is overall, desaturated. But it's not all. This PPU also has the "lightest" $3x palette rows on the palette so bright compared to the rest it's near-white. It's effectively white unless you put the colors next to each other and notice they have an extremely slight tint hinting at the original color. This is easily observed in KiraKira Star Night DX, as the main character's hair in the CG scenes are light pink, using one of the $3x colors. Below is a comparison of how absolutely busted it is compared to a "proper" render of the same CG, since it renders her hair and other bits more or less perfectly white.
And yes, I really do need to get a proper capture card soon. I'll see what I can do about that in the future.
Weird clone with a CPU marked XYZ-6783. From my notes on the CPU revisions page:
PPU is a bit weird; It's marked as "6528". But it's really one huge lie. It contains proper EXP output and palette readback on Micro Machines works. And the video isn't horribly oversaturated on top of that. Considering an old forum post from Argentina shows PAL WDL PPUs having the same region switch as the TA chipsets, they may be very closely related to the TAs.Lacks tonal noise mode like original RP2A03, but resets APU Frame Counter on console reset like 2A03E/2A03G. Otherwise behaves like letterless RP2A03.
--
This other one's a really weird console. I don't usually expect much from clones in terms of expansion audio. But this one... wow! It perfectly matches how mixing sounds in NSFPlay. Shame that the 7805 just overheats after less than 5 minutes, though. Additionally, it doesn't even mix the audio right. Composite output gets only the APU for some reason? RF works fine, it seems, though. CPU: Standard fare UMC-based CPU clone. Duties swapped, DPCM is fine, blah blah blah. It's a bit weird though. Why is the CPU marked "6538N" as if it were a UMC PPU?
PPU: This thing. Oh my god. It's just stupidly bizarre. You'd expect, from well, any average UMC-based (probably) PPU that the video signal is somewhat "oversaturated. This PPU is the exact opposite, but weirdly deliberately. The PPU is overall, desaturated. But it's not all. This PPU also has the "lightest" $3x palette rows on the palette so bright compared to the rest it's near-white. It's effectively white unless you put the colors next to each other and notice they have an extremely slight tint hinting at the original color. This is easily observed in KiraKira Star Night DX, as the main character's hair in the CG scenes are light pink, using one of the $3x colors. Below is a comparison of how absolutely busted it is compared to a "proper" render of the same CG, since it renders her hair and other bits more or less perfectly white.
And yes, I really do need to get a proper capture card soon. I'll see what I can do about that in the future.
Re: Help collecting pictures of CPU and PPU packages
I have a Famicom with PPU revision E that has a heat spreader. It’s legit. Do PPU’s prior to E-0 get really get hot enough to warrant these heat spreaders? I find this interesting,loglow wrote: ↑Mon Sep 26, 2022 11:02 pmI believe it originally came out of a genuine Famicom, but I'm not certain. Other than it functioning as an NTSC PPU with a non-clone palette, I'm not sure what else to add. I suspect that it's a RP2C02E-0, for lack of a better explanation. I'm not sure if a RP2C02E (non -0) even exists?Individualised wrote: ↑Sun Sep 25, 2022 3:41 pmIs there any more context to the origins of this chip/what it exactly is?
Re: Help collecting pictures of CPU and PPU packages
My Famicom that has the PPU E with heat spreader has a serial number H500xxxx
Re: Help collecting pictures of CPU and PPU packages
Some of the PPUs get hot enough that they're painful to touch for more than a moment. We haven't collected any concrete data on this, but there are temperature differences between chips, likely between revisions of chips.
Thanks for the revision E info. I've managed to get a couple of these now, but without any serial number information. That number is a bit higher than I would have guessed, but not unreasonably so.
Thanks for the revision E info. I've managed to get a couple of these now, but without any serial number information. That number is a bit higher than I would have guessed, but not unreasonably so.
Re: Help collecting pictures of CPU and PPU packages
Fiskbit wrote: ↑Sun Sep 24, 2023 12:42 am Some of the PPUs get hot enough that they're painful to touch for more than a moment. We haven't collected any concrete data on this, but there are temperature differences between chips, likely between revisions of chips.
Thanks for the revision E info. I've managed to get a couple of these now, but without any serial number information. That number is a bit higher than I would have guessed, but not unreasonably so.
I thought so too. I figured it would be an E-0 PPU. I bought this famicom brand new and all the chips are from mid to late 84. It was one of the first round button Famicom’s and last ones to come without the red plug on the front port and an all black power brick. One prior has a big black sticker with white text and ones after has that shiny stick on the bottom front.
Re: Help collecting pictures of CPU and PPU packages
I got myself a pair of those TA-03NP1 CPUs and tried to combine it with a 21.47~ MHz XTal and a UA6528 PPU.
The result isn't that bad actually and it works well with some NTSC games I tried so far. I'm still in search for a pure NTSC variant of the TA series though.
The result isn't that bad actually and it works well with some NTSC games I tried so far. I'm still in search for a pure NTSC variant of the TA series though.
- Battletoads fails to enter stage 1, but intro works fine
Code: Select all
Cycles/line: 114.3
Lines/frame: 262
NMI Scanline: 241
TV System: NTSC (60Hz)
Frame rate: 60.10
CPU Speed: 1.800
Re: Help collecting pictures of CPU and PPU packages
The last one is P03 i think, I also have TA-02N which is pure NTSC chip, doesn't work in PAL mode at all and no NTSC/PAL pin.
I am going to do a video of these chips, will upload it on my youtube channel soon.
P03 is a pure NTSC CPU with near perfect sound like the original while P02 is a PAL PPU which needs extra PAL crystal to work
I am going to do a video of these chips, will upload it on my youtube channel soon.
P03 is a pure NTSC CPU with near perfect sound like the original while P02 is a PAL PPU which needs extra PAL crystal to work