* The Z80 has more registers but has to do pretty much everything with them whilst the 6502 can directly use the first 256 bytes of memory for those jobs.
This shows The 6502 and Z80 exemplify the design fundamental differences between the 6502 what would become known as RISC and Z80CISC architectures. The 6502 focused on efficiencywas designed with a streamlined, using its limited transistor budget for the ALU and fast memory accessminimal instruction set to achieve high execution speed. In contrastThe Z80, on the Z80 neglected these and used other hand, incorporated a larger, more transistors for extra registers and complex instructions. However, these Z80's features, like the alternate register instruction set, register pairs aiming to make assembly programming more accessible and 16-bit stack, make it easier to develop complex softwarecreate more compact programs.
The 6502 comes in a 40-pin DIP package. It has been produced by various manufacturers and used in a wide range of applications, from gaming consoles like the [[Atari 2600|Atari VCS]], [[Atari Lynx]], [[Nintendo Entertainment System]] and [[PC-Engine]] to personal computers like the [[Apple II]], [[BBC Micro]], [[Atari XL]], [[Oric]], [[VIC20]] and [[Commodore 64]].
