Contra nes on unisystem
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Sprite RAM is directly built-in in the PPU chip. SPR-RAM Memory Map (8bit buswidth, 0-FFh) 00-FF Sprite Attributes (256 bytes, for 64 sprites / 4 bytes each) Any additional VRAM (or, more regulary, VROM) is located in the cartridge, which may also contain mapping hardware to access more than 12K of video memory.
Contra nes on unisystem plus#
Note: The NES contains only 2K built-in VRAM, which can be used for whatever purpose (for example, as two Name Tables, or as one Name Table plus 64 Tiles). PPU Memory Map (14bit buswidth, 0-3FFFh) 0000h-0FFFh Pattern Table 0 (4K) (256 Tiles)ġ000h-1FFFh Pattern Table 1 (4K) (256 Tiles)Ģ000h-23FFh Name Table 0 and Attribute Table 0 (1K) (32x30 BG Map)Ģ400h-27FFh Name Table 1 and Attribute Table 1 (1K) (32x30 BG Map)Ģ800h-2BFFh Name Table 2 and Attribute Table 2 (1K) (32x30 BG Map)ĢC00h-2FFFh Name Table 3 and Attribute Table 3 (1K) (32x30 BG Map)ģF00h-3F1Fh Background and Sprite Palettes (25 entries used) Larger carts may use whatever external mappers to access more than the usual 32K. Uses Z80 as second CPU.ĬPU Memory Map (16bit buswidth, 0-FFFFh) 0000h-07FFh Internal 2K Work RAM (mirrored to 800h-1FFFh)Ģ000h-2007h Internal PPU Registers (mirrored to 2008h-3FFFh)Ĥ018h-5FFFh Cartridge Expansion Area almost 8KĬPU Reset vector located at, even smaller carts must have memory at that location. Coin-detect inputs, eight Dip-switches, different palette.Īrcade Machine with 10 cartridge slots. Top-loading 72-pin cartridge slot, without external sound-input, without lockout chip. Includes NES-style joystick connectors, plus the original 15pin Famicom Expansion port. 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. Original NES (Nintendo Entertainment System) (1985) (US, Europe, Australia) The Famicom was re-released with a new motherboard." Yamauchi recalled all sold Famicom systems, and put the Famicom out of production until the errors were fixed. "During its first year, people found the Famicom to be unreliable, with programming errors and freezing rampant. 15pin Expansion port for further controllers. Two joypads directly attached to console, Joypad 1 with Start/Select buttons, Joypad 2 with microphone, but without Start/Select. Original Famicom (Family Computer) (1983) (Japan)Ħ0-pin cartridge slot, with external sound-input, without lockout chip. 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. Internal Memory: 2K WRAM, 2K VRAM, 256 Bytes SPR-RAM, and Palette/Registers IRQs may be generated by APU and by external hardware. NMIs may be generated by PPU each VBlank. NES Specifications Everynes - Nocash NES SpecsĬPU 2A03 - customized 6502 CPU - audio - does not contain support for decimal