ZX Spectrum 16K/48K edge connector: Difference between revisions

ZX Spectrum 16K/48K edge connector (view source)

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 ====CPU Clock====
-The {{overline|CK signal}}, sometimes referred to as PHICPU or &Phi;CPU is available on Lower Pin 8. This clock signal is generated by the [[The Spectrum ULA|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.
+The {{overline|CK}} signal, sometimes referred to as PHICPU or &Phi;CPU is available on Lower Pin 8. This clock signal is generated by the [[The Spectrum ULA|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.
 ====IO Request Signals====