The Zx Spectrum Ula How To Design A Microcomputer Zx Design Retro Computer Portable Today

In those days, most computers were a mess of dozens of tiny chips. But the Spectrum was different. The

: It takes a 14 MHz master clock, dividing it to provide a 7 MHz pixel clock and a 3.5 MHz clock for the Z80 CPU . In those days, most computers were a mess