cpu-architecture

A detailed technical overview of the PC Engine (TurboGrafx-16) CPU, the HuC6280, a fast 8-bit processor based on the 65C02, covering its architecture, clock speeds, and differences from the NES and SNES CPUs.

Raymond Chen explores why x86 compilers universally prefer "xor eax,eax" over "sub eax,eax" to zero a register, attributing it to historical momentum and slightly safer flag behavior rather than technical superiority.

An exploration of unusual circuits found in the Intel 386's standard cell logic, including large multiplexers and non-standard inverters, highlighting the chip's design history and place-and-route techniques.