PlayStation technical specifications
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The PlayStation technical specifications describe the various components of the original PlayStation video game console.
Central processing unit (CPU)
- LSI CoreWare CW33300-based core
- MIPS R3000A-compatible 32-Bit RISC CPU MIPS R3051 with 5KB L1 cache, running at 33.8688 MHz.
- The microprocessor was manufactured by LSI Logic Corp. with technology licensed from SGI.
- CPU cache RAM:
- Geometry Transformation Engine (GTE or Cop2)
- Coprocessor that resides inside the main CPU processor, giving it additional vector math instructions used for 3D graphics, lighting, geometry, polygon and coordinate transformations ‒ GTE performs high speed matrix multiplies.
- Operating performance: 66 MIPS
- Polygons per second (rendered in hardware):
- Motion Decoder (MDEC)
- Also residing within the main CPU, enables full screen, high quality FMV playback and is responsible for decompressing images and video into VRAM. <>
- Operating performance: 10 MIPS
- Documented device mode is to read three RLE-encoded 16×16 macroblocks, run IDCT and assemble a single 16×16 RGB macroblock.
- Output data may be transferred directly to GPU via DMA.
- It is possible to overwrite IDCT matrix and some additional parameters, however MDEC internal instruction set was never documented.
- System Control Coprocessor (Cop0)
- This unit is part of the CPU. Has 16 32-bit control registers.
- Modified from the original R3000A cop0 architecture, with the addition of a few registers and functions.
- Controls memory management through virtual memory technique, system interrupts, exception handling, and breakpoints.
- 2 MiB main EDO DRAM
- Additional RAM is integrated with the GPU (including a 1 MiB frame buffer) and SPU (512 KiB), see below for details.
- Cache RAM for CPU core and CD-ROM. See the relevant sections for details.
- Flash RAM support through the use of memory cards, see below.
- BIOS stored on 512 KiB ROM
Graphics processing unit (GPU)
- 32-bit Sony GPU
- Handles display of graphics, control of framebuffer, and drawing of polygons and textures
- Handles 2D graphics processing, in a similar manner to the 3D engine
- RAM:
- Adjustable frame buffer (1024×512)
- Emulation of simultaneous backgrounds (to simulate parallax scrolling)
- Mask bit
- Texture window
- Alpha blending (4 per-texel alpha blending modes)
- Framebuffer effects
- Transparency effects
- Render to texture
- Offscreen rendering
- Multipass rendering
- Flat or Gouraud shading and texture mapping
- No line restriction
- Colored light sourcing
- Texture mapping color mode:
- Mode 4: 4 bit CLUT (16 colors)
- Mode 8: 8 bit CLUT (256 colors)
- Mode 15: 15 bit direct (32768 colors)
- Mode 24: 24 bit (16,777,216 colors)
- Sprite engine
- Special sprite effects:
- Scaling up/down
- Vertical and horizontal line scroll
Sound processing unit (SPU)
- Supports ADPCM sources with up to 24 channels
- Sampling rate of up to 44.1 kHz
- 512 kB RAM
- PCM audio source
- Supports MIDI sequencing
- Digital effects include:
I/O system and connectivity
- (660 MB maximum storage capacity, double speed CD-ROM drive)
- 2×, with a maximum data throughput of 300 kB/s (double speed), 150 KB/s (Normal)
- XA Mode 2 compliant
- Audio CD play
- CD-DA (CD-Digital Audio)
- 128 kB buffer
- Two control pads via connectors
- Expandable with multitap connector
- Backup flash RAM support
- Two removable cards
- Each card has 128 KB flash memory
- OS support for File Save, Retrieve and Remove
- Video and audio connectivity
- AV Multi Out (Composite video, S-Video, RGBS)
- RCA Composite video and Stereo out (SCPH-100x to 3xxx only)
- RFU (SCPH-112X) DC out (SCPH-100x to 3xxx only)
- S-Video out (SCPH-1000 only)
- Serial and parallel ports
- Serial I/O (used for PlayStation Link Cable SCPH-100x to 900x only)
- Parallel I/O (N/A) SCPH-100x to 750x only)
- 7.5V DC
- PlayStation 2 technical specifications
- PlayStation 3 technical specifications
- PlayStation 4 technical specifications
- "Sony's PlayStation Debuts in Japan!". Electronic Gaming Monthly (65). Sendai Publishing. December 1994. p. 70.
- "Inside the PlayStation". Next Generation. Imagine Media (6): 51. June 1995.
- "Tech Specs: Sony PlayStation". Next Generation. Imagine Media (12): 40. December 1995.
- Karl Hodge. "Hall of Fame: Sony PlayStation, the games console that changed everything".
- "Sony PlayStation". GamePro (62). IDG. September 1994. p. 20.