Atari 2600 8bit game console

Game history

Atari 2600

(img from Wiki)

Popular Game:

Doodle(吃豆人)

Tank:

Kung-Fu Master (I played this game on Gameboy)

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Hardware

CPU

6507, a simple version of 6502

6502

(From Wiki) 6502 have 8 pin Data Bus and 16 pin Address bus

6507

6507 have 8 pin Data Bus and 13 pin Address bus. IRQ(Interrupt request pin) & NMI(Non-maskable interrupt pin) removed

6507 / 6502 register design

(image from Wiki)

Stack Pointer using fake bit start from 8bit.

Cuz 6507 removed IRQ pin, the 'I' in Processor Flags can ignore.

6502 opcodes

Simulator

Online website Atari 2600 simulator.

8bit workshop