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Nintendo Entertainment System/Hardware information: Difference between revisions

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(Organize into CPU and PPU sections; MOS Technology designed the 6502; there are no "16 color" or "24 color" modes; there is nothing 256x224 about the PPU at all)
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The Nintendo Entertainment System (NES for short) consists of:
The Nintendo Entertainment System (NES for short) consists of:


* A 6502 8-bit (using a custom Motorola 6502 class) Processor running at ~1.8Mhz
* 2A03 Central Processing Unit
* 16 Kbit (2kb) of RAM
** A 6502 8-bit (using a custom MOS Technology 6502 class) Processor running at ~1.8Mhz
* 16 Kbit (2kb) Vram
** On-die PSG sound supporting 5 channels:
* Screen Resolution of 256x224 for NTSC or 256x239 for PAL
*** 2 square wave
* 52 Colours Available
*** 1 triangle wave
* A maximum of 16, 24 or 25 colours on screen depending on the Screen mode used
*** 1 noise
* Maximum of 64 sprites
*** 1 PCM
* Maximum of 8 sprites per scanline
** 16 Kbit (2kb) of RAM
* 8x8 or 8x16 sprite size
* 2C02 Picture Processing Unit
* Two picture scrolls, Horizontal and Verical
** 16 Kbit (2kb) of VRAM
* Min/Max cart size: 192 Kbit - 4 Mbit
** Screen Resolution of 256x240
* PSG sound supporting 5 channels:
** 52 Colours Available (four levels of gray, and four levels of each of 12 hues)
** 2 square wave
** Up to 25 colours on screen
** 1 triangle wave
** Maximum of 64 sprites
** 1 noise
** Maximum of 8 sprites per scanline
** 1 PCM
** 8x8 or 8x16 sprite size
** Two picture scrolls, Horizontal and Verical
* Game Pak
** Min/Max attested cart size: 192 Kbit - 4 Mbit
** More than 320 Kbit requires bankswitching hardware
** Some games contain extra RAM for the CPU and/or PPU
 
More NES hardware information can be found at http://nesdev.parodius.com/wiki/

Revision as of 06:15, 24 October 2005

The Nintendo Entertainment System (NES for short) consists of:

  • 2A03 Central Processing Unit
    • A 6502 8-bit (using a custom MOS Technology 6502 class) Processor running at ~1.8Mhz
    • On-die PSG sound supporting 5 channels:
      • 2 square wave
      • 1 triangle wave
      • 1 noise
      • 1 PCM
    • 16 Kbit (2kb) of RAM
  • 2C02 Picture Processing Unit
    • 16 Kbit (2kb) of VRAM
    • Screen Resolution of 256x240
    • 52 Colours Available (four levels of gray, and four levels of each of 12 hues)
    • Up to 25 colours on screen
    • Maximum of 64 sprites
    • Maximum of 8 sprites per scanline
    • 8x8 or 8x16 sprite size
    • Two picture scrolls, Horizontal and Verical
  • Game Pak
    • Min/Max attested cart size: 192 Kbit - 4 Mbit
    • More than 320 Kbit requires bankswitching hardware
    • Some games contain extra RAM for the CPU and/or PPU

More NES hardware information can be found at http://nesdev.parodius.com/wiki/

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