 | |
| General information | |
|---|---|
| Launched | 1982 |
| Discontinued | 1995 |
| Common manufacturer(s) |
|
| Performance | |
| Max. CPU clock rate | 1.79 MHz |
| Architecture and classification | |
| Min. feature size | 6 μm |
| Instruction set | MOS 6502 |
| Physical specifications | |
| Cores |
|
| Socket(s) |
|
RP2A03E
The Ricoh 2A03 or RP2A03 (NTSC version) / Ricoh 2A07 or RP2A07 (PAL version) is an 8-bit microprocessor manufactured by Ricoh for the Nintendo Entertainment System video game console. It contained a second sourced MOS Technology 6502 core, modified to disable the 6502's binary-coded decimal mode, with 22 memory-mapped I/O registers that controlled an APU, rudimentary DMA, and game controller polling.[1] It was also used as a sound chip and secondary CPU by Nintendo's arcade games Punch-Out!! and Donkey Kong 3.
Regional variations[]
PAL versions of the NES (sold in Europe, Asia, and Australia) used the Ricoh 2A07 or RP2A07 processor, which was identical to the 2A03 except for a different clock divider and the 50 Hz vertical refresh rate used in the PAL television standard, with the exception of the 16 hard-coded sampling rates for the Delta modulation-encoded sample playback unit. The changes were made in order for sampled sounds to maintain the original pitch of the RP2A03 with the new clock divider.
See also[]
- Nintendo Entertainment System technical specifications
References[]
- ↑ Taylor, Brad (April 23, 2004). "2A03 technical reference". NesDev.com. Archived from the original on October 17, 2018. Retrieved June 6, 2008. Unknown parameter
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| 65xx-based CPUs | |
|---|---|
| MOS Technology / CSG | 6501 • 6502 (and 6503, 6504, and 6505) • 6507 • 6508 • 6509 • 6510 (and 6510T, 6512, 6513, 6514, 6515) • 8502 (and 7501, 8500, 8501) • 65CE02 (and 4510) |
| Western Design Center | 65C02 • 65C134 • 65C265 • 65C816 (and 65C802) |
| Mitsubishi / Renesas | 740 family |
| Game Machine CPUs | Hudson HuC6280 • Nintendo SA-1 • Ricoh 2A03 • Ricoh 5A22 |
Ricoh 
| ||
|---|---|---|
| Acquisitions | Gestetner • Ikon Office Solutions • Lanier • Monroe • Nashuatec • Pentax Imaging • Rex-Rotary • Savin | |
| Products and services | Digital cameras | Ricoh Caplio 400G Wide • Ricoh Caplio 500SE • Ricoh Caplio G3 • Ricoh Caplio GX100 • Ricoh Caplio R3 • Ricoh Caplio RX • Ricoh GR digital cameras • Ricoh GXR |
| Film cameras | Ricoh 500 • Ricoh GR series • Ricoh Mirai • Ricoh XR-P | |
| Other | Katana • Ricoh 2A03 • Ricoh 5A22 • Ricoh RP2C02/RP2C07 • Ricoh RF5c68 | |
| Places | Ricoh Arena • Ricoh Coliseum • Tanjong Pagar Ricoh Park | |
| Other | Refined Printing Command Stream • Ricoh Black Rams • Ricoh Cup • Ricoh Xinxiu Cup | |
Nintendo Entertainment System  | ||
|---|---|---|
| Accessories | Nintendo manufactured | Family Computer Disk System • Famicom Data Recorder • Famicom Modem • Family BASIC • NES Advantage • NES Four Score • NES Satellite • NES Zapper • Power Pad • R.O.B. |
| Third-party | Aladdin Deck Enhancer • Arkanoid Controller • Double Player • Game Genie • HES Unidaptor • Homework First • Jammer • LaserScope • Miracle Piano • Power Glove • Roll 'n Rocker • Speedboard • Super Controller • Teleplay Modem • Turbo Tech Controller • Turbo Touch 360 • Turbotronic • U-Force • Ultimate Superstick | |
| Hardware | Ricoh 2A03 microprocessor • Picture Processing Unit • Game Pak | |
| Software | List of Family Computer games (List of Family Computer Disk System games) • List of NES games | |
| Variations | NES-101 • NES Classic Edition • Twin Famicom • Sharp Nintendo Television • Famicom Titler • Hardware clones | |
