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The FME-7 is a memory mapping circuit developed by Sunsoft for use in NES and Famicom cartridges. It switches program ROM in 8KB banks and switches the character ROM 1KB banks. It also contains hardware to generate IRQ signals after a specified number of CPU clock cycles, thus achieving split-screen effects with minimal use of processing power.
The NES PPU uses a background palette with up to 13 of these colors at a time, consisting of one common backdrop color and four subpalettes of three colors, chosen from the above set. The PPU's video memory layout allows choosing one subpalette for each 16×16 pixel area of the background.
The NES uses a 72-pin design, as compared with 60 pins on the Famicom. To reduce costs and inventory, some early games released in North America are simply Famicom cartridges attached to an adapter to fit inside the NES hardware. [150] Early NES cartridges are held together with five small slotted screws. Games released after 1987 were ...
The NES uses a 72-pin interface and the Famicom uses a 60-pin design. Some early NES games, most commonly Gyromite, include 60-pin Famicom PCBs and ROMs with a built-in converter. [2] Unlike the predominantly gray colored NES Game Paks, official Famicom cartridges were produced in many colors of plastic.
The list of Super NES enhancement chips demonstrates Nintendo hardware designers' plan to easily expand the Super Nintendo Entertainment System with special coprocessors. This standardized selection of chips was available to licensed developers, to increase system performance and features for each game cartridge.
PAL versions of the NES (sold in Europe, Asia, and Australia) use the Ricoh 2A07 or RP2A07 processor, which is a 2A03 with modifications to better suit the 50 Hz vertical refresh rate used in the PAL television standard. However, most developers lacked the resources to properly adjust their games' music from NTSC to PAL, leading to many PAL ...
Bank select switch on Cromemco memory board was used to map the memory into one or more of eight distinct 64 KB banks. [7] Processors with 16-bit addressing (8080, Z80, 6502, 6809, etc.) commonly used in early video game consoles and home computers can directly address only 64 KB. Systems with more memory had to divide the address space into a ...
There are also a number of famiclones in the shape of a Game Boy or similar, but which can only display NES/Famicom games on a TV, and have a simple LCD game in the screen area. such an example is the NES Clone "GameKids Advance", which resembles an older Game Boy Advance, and has a built-in LCD game, powered by 2 AA batteries, or the included ...