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{WIP} More about the PS2 components...

Are you sure you know 100% of your PS2? Hmm I'm not really so sure ... Let's see what she has under the hood.

The PS2 User Guide !




First, the PS2, by Sony Computer Entertainment, was released March 4, 2000 in Japan. She will be released later in North America (NTSC) and Europe (PAL) on October 26 and November 24 of the same year.

It was sold about 160 million units. The most played game was Gran Theft Auto: San Andreas (not surprisingly).

There was 2 models of the PS2: the Flat and the Slimline. The slimline is 5 times more slime than the fat. The slimline don't have integrated power supply (slimline have adapter 8,5v), like the PSOne and other things that "deflate" the PS2. Note that there is no calibration of the CD, as there is no case, in contrast to the fat PS2 which is provided with a motor and a calibrator for centering the CD. Okay, I admit, this is not true. But the fact that there is no longer have CD case there is something in deflation.
Already, the PS2 was very powerful for its time, because being a console, its processors and its technology is very advanced for a year like 2002.

Anyway, there was 4 evolutions of the PS2: V14 (SCPH-7500X), V15 (SCPH-7700X), V16 (SCPH-7900X) and V17 (SCPH-9000X).

Well, let's see some hardware !

The Emotion engine

Click to zoom - 2592*1944

Click to zoom - 2592*1944

Click to zoom - 2592*1944

Click to zoom - 2592*1944
Bwaaa! I was forced to remove it from the motherboard with a knife, it has bent ... Not the knife, but the processor when hitting the ground so he was thrown away! Anyway, there is some things that pop-up when I was removing... I don't know what, maybe some glue Glare Also, it's dimensions are 4,2*4,2 cm, like a small key or a tiny webcam


At one time, GS and EE processors of the PS2 were both together in a single processor.
[Image: CXD9833GB.png]

EE, or EmotionEngine, has been created with the cooperation of Sony and Toshiba, in 1999. This is a 64-bits processor. The EE is a Very-Large-Scale Integration (VLSI) processor that allow to place more than 100.000 components on the same chip. There is 8 cores on the same IHS (Integrated Heat Spreader) which each have a specific task. The processor is closely linked to the first VPU, VPU0. They are responsible for the interpretation of the code and the high-level calculation. The second VPU, VPU1 is devoted to the geometric transformation and lighting and works independently in parallel to the processor. The VPU0, when not used, can also be used for geometric transformations (polygons). [Thanks to Wikipedia]

The main processor is a RISC processor double core, superscalar, in-order. It implements the MIPS-III instructions and a large part of the MIPS-IV. The core MIPS is based on two ALU and FPU. The ALU is 64 bits but the FPU is 32 bits.

The communication between the Emotion Engine and RAM occurs through two channels RDRAM and the memory controller that interfaces with the internal data bus. Each channel is 16 bits wide and operates at 400 MHz. Combined, the two channels reach a maximum theoretical bandwidth of 3.2 GB / s, about 33% more than the internal bus. This is why the memory controller transmits the data sent by the DRDRam chains if additional bandwidth can be used by the CPU.

The Emotion Engine has 540 contacts in ball grid array. Also, the first EE CPU was clocked at 294 MHz, and finally 300 MHz for the newer systems.


CPU: 64-bit "Emotion Engine" clocked at 294.912 MHz (299 MHz on newer versions), 10.5 million transistors
  • System memory: 32 MB Direct Rambus or RDRAM
  • Memory bus Bandwidth: 3.2 gigabytes per second
  • Main processor: MIPS R5900 CPU core, 64-bit, little endian (mipsel).
  • Coprocessor: FPU (Floating Point Multiply Accumulator × 1, Floating Point Divider × 1)
  • Vector Units: VU0 and VU1 (Floating Point Multiply Accumulator × 9, Floating Point Divider × 1), 32-bit, at 147.456 MHz.
    • VU0 typically used for polygon transformations optionally (under parallel or serial connection), physics and other gameplay based things
    • VU1 typically used for polygon transformations, lighting and other visual based calculations (Texture matrix able for 2 coordinates (UV/ST))
      • Parallel: Results of VU0/FPU sent as another display list via MFIFO (E.G. complex characters/vehicles/etc.)
      • Serial: Results of VU0/FPU sent to VU1 (via 3 methods) and can act as an optional geometry pre-processor that does all base work to update the scene every frame (E.G. camera, perspective, boning and laws of movement such as animations or physics)
  • Floating Point Performance: 6.2 GFLOPS (single precision 32-bit floating point)
    • FPU 0.64 GFLOPS
    • VU0 2.44 GFLOPS
    • VU1 3.08 GFLOPS (with Internal 0.64 GFLOPS EFU)
  • Tri-Strip Geometric transformation (VU0+VU1): 150 million polygons per second
    • 3D CG Geometric transformation with raw 3D perspective operations (VU0+VU1): 66-80+ million polygons per second
    • 3D CG Geometric transformations at peak bones/movements/effects (textures)/lights (VU0+VU1, parallel or series): 15–20 million polygons per second
    • Actual real-world polygons (per frame):500-650k at 30fps, 250-325k at 60fps
  • Compressed Image Decoder: MPEG-2
  • I/O Processor interconnection: Remote Procedure Call over a serial link, DMA controller for bulk transfer
  • Cache memory: Instruction: 16 KB, Data: 8 KB + 16 KB (ScrP)

The Graphics Synthesizer

GPU of the PS2. What could I say? Lots of things!

First, the frequency of the GPU has never been changed. But there still a difference between the Fat version and the Slim version : in the Fat, the GPU is cooled by one heatsink separated of the one of the CPU. Not in the Slim, where the GPU and CPU use the same heatsink. But instead of be cooled by a air flow (Fat), the heatsink of the Slim is cooled by a direct air flow from a fan.


There is not really information about the GS. It is simply a graphics processor with 4 MB of onboard memory. So, in view of the circumstances, the only information available in the following paragraph.


Graphics processing unit: "Graphics Synthesizer" clocked at 147.456 MHz
  • Pixel pipelines: 16
  • Video output resolution: variable from 256×224 to 1920×1080 pixels
  • 4 MB Embedded DRAM video memory bandwidth at 48 gigabytes per second (main system 32 MB can be dedicated into VRAM for off-screen materials)
    • Texture buffer bandwidth: 9.6 GB/s
    • Frame buffer bandwidth: 38.4 GB/s
  • DRAM Bus width: 2560-bit (composed of three independent buses: 1024-bit write, 1024-bit read, 512-bit read/write)
  • Pixel configuration: RGB: Alpha:Z Buffer (24:8, 15:1 for RGB, 16, 24, or 32-bit Z buffer)
  • Dedicated connection to: Main CPU and VU1
  • Overall pixel fillrate: 16×147 = 2.352 Gpixel/s (rounded to 2.4 Gpixel/s)
    • Pixel fillrate: with no texture, flat shaded 2.4 (75,000,000 32pixel raster triangles)
    • Pixel fillrate: with 1 full texture (Diffuse Map), Gouraud shaded 1.2 (37,750,000 32-bit pixel raster triangles)
    • Pixel fillrate: with 2 full textures (Diffuse map + specular or alpha or other), Gouraud shaded 0.6 (18,750,000 32-bit pixel raster triangles)
  • GS effects: AAx2 (poly sorting required),[53] Bilinear, Trilinear, Multi-pass, Palletizing (4-bit = 6:1 ratio, 8-bit = 3:1)
  • Multi-pass rendering ability
    • Four passes = 300 Mpixel/s (300 Mpixels/s divided by 32 pixels = 9,375,000 triangles/s lost every four passes)


The audio of the PS2 is relatively efficient because it can go up to Dolby Digital 5.1. Here too, there is no lots of things to say.....

...come later !

"I prefer to be with real assholes rather than fake nice."

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Thats very intersting.Thx for posting. Smile
Thanks for the delidded EE. It looks like a .18µ one.
My slim SCPH-90006 does come with an integrated PSU. The power cable is simply a wire.
Intel Core 2 Quad Q9400 | nVidia GeForce GTX 750 | 4 GiB DDR3 @ 533 Mhz | MSI G41M-P28 | Cooler Master RS-390-PMSR-A3 | Xigmatek TYR SD962 | LG Flatron W1943SE | HP KB-0316 | MotoSpeed F60
(08-25-2012, 05:59 AM)Livy Wrote: My slim SCPH-90006 does come with an integrated PSU. The power cable is simply a wire.

Yeah, I just saw that there existed a PS2 model of 700 grams with an integrated power supply Laugh Thank you for reminding me to add this.
"I prefer to be with real assholes rather than fake nice."
Wow I've never seen pins so wrecked to hell lol I also forgot there's a slim with internal PSU. Now you got me daydreaming about a handheld PS2... But not those bulky mods with the DVD drives Wink
Sorry if I don't edit this post, I'm veeeeeeery busy for now.....
"I prefer to be with real assholes rather than fake nice."

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