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NES/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 | * 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) | ** On-die PSG sound supporting 5 channels: | ||
* Screen Resolution of | *** 2 square wave | ||
* 52 Colours Available | *** 1 triangle wave | ||
* | *** 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 | ||
* | ** 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/ | |||
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/