ZX Spectrum 16K/48K edge connector

4 bytes added, 22:44, 20 February 2012
CPU Clock
====CPU Clock====
The !CK signal, sometimes referred to as PHICPU is available on Lower Pin 8. This clock signal is generated by the ULA and is interrupted during [[contended memory ]] access. This clock signal is inverted by a transistor switch to provide a clean clock edge for the Z80.
====Key Slot====