NES Specifications
Everynes - Nocash NES Specs Everynes Hardware Specifications Tech Data Memory Maps I/O Map Picture Processing Unit (PPU) Audio Processing Unit (APU) Controllers Cartridges and Mappers Famicom Disk System (FDS) Hardware Pin-Outs CPU 65XX Microprocessor About Everynes Tech Data Overall Specs CPU 2A03 - customized 6502 CPU - audio - does not contain support for decimal The NTSC NES runs at 1.7897725MHz, and 1.7734474MHz for PAL. NMIs may be generated by PPU each VBlank. IRQs may be generated by APU and by external hardware. Internal Memory: 2K WRAM, 2K VRAM, 256 Bytes SPR-RAM, and Palette/Registers The cartridge connector also passes audio in and out of the cartridge, to allow for external sound chips to be mixed in with the Famicom audio. Original Famicom (Family Computer) (1983) (Japan) 60-pin cartridge slot, with external sound-input, without lockout chip. Two joypads directly attached to console, Joypad 1 with Start/Select buttons, Joypad 2 with microphone, but without Start/Select. 15pin Expansion port for further controllers. Video RF-Output only. "During its first year, people found the Famicom to be unreliable, with programming errors and freezing rampant. Yamauchi recalled all sold Famicom systems, and put the Famicom out of production until the errors were fixed. The Famicom was re-released with a new motherboard." Original NES (Nintendo Entertainment System) (1985) (US, Europe, Australia) Same as Famicom, but with slightly different pin-outs on cartridge slot, and controllers/expansion ports: Front-loading 72-pin cartridge slot, without external sound-input on cartridge slot, without microphone on joypads, with lockout chip. Newer Famicom, AV Famicom (1993-1995) 60-pin cartridge slot, with external sound-input, without lockout chip.
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