Atari 2600 Junior
The Atari 2600 Jr. was launched in 1986 to reduce cost of the system. The case resembled that of the Atari 7800 and the system was advertised as a budget gaming system, and retailed under $49.99. Some new games were developed for the system, but the architecture was the same as the Atari 2600 and could not really compete with the systems that were available on the market.
CPU View - MOS 6507
The MOS Technology 6507 CPU is an 8-bit microprocessor based on the 6502 technology. Basically it is a 6502 packaged in a 28-pin DIP instead of a 40-pin. This made the chip cheaper to package and integrate in systems. MOS technology achieved this by reducing the address bus from 16 bits to 13 bits and removing a number of other pins used only for certain applications.
The 6507 is the main chip of the Atari-2600 family of consoles. The Chip was launched in 1975 and could, due to the reduced number of address pins, address 8KByte of memory. This proved to be enough for the Atari consoles and for peripherals such as the 850 Serial & Parallel Interface, the 1050 disk drives and more.
