Comments by "justgivemethetruth" (@justgivemethetruth) on "ColdFusion" channel.

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  8. That chip seems to have been the game OS, what used to be called the ROM, read-only memory. Apparently it also have the video on it as well .... The AY-3-8500 "Ball & Paddle" integrated circuit was the first in a series of ICs from General Instrumentdesigned for the consumer video game market. These chips were designed to output video to an RF modulator, which would then display the game on a domestic television set. The AY-3-8500 contained six selectable games — tennis (a.k.a. Pong), soccer, squash, practice, and two rifle shooting games. The AY-3-8500 was the 625-line PAL version and the AY-3-8500-1 was the 525-line NTSC version. It was introduced in 1976, Coleco becoming the first customer having been introduced to the IC development by Ralph H. Baer.[1]A minimum number of external components were needed to build a complete system. The old chips actually were RISC, in that they did not have a lot of complex instructions. It was the Intel processors that started adding in a lot of extra stuff that the industry later rejected because it made the instruction decode slower, the chips bigger and yeild less, and was harder to program. It is a complex subject. There is instruction set compatibility, pin compatibility, clock-speed ... kinds of things to take into account, but the point was that the architecture of the Intel chips was different than the Motorola and Zilog, MOS Technologies, etc chips. If I recall the main thing was that Intel multi-plexed the address pins so that it could address a larger space in segments, I think it was called. But it took longer too, two clocks. The pin-out, instruction set and architecture was different in all of them.
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