Schematics

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Pony80: Clock Circuits

74HCT14 clock circuit schematic

Pony80: Clock Circuits

LM555 clock circuit schematic

Pony80: Z80 Architecture

Z80 and clock

Pony80: Z80 Architecture

Bus Tester

Back to Basics: Logic Gates

Normally you would tie all unused inputs to ground to improve chip performance and stability. I did not show that here.

Pony80: CPU/Clock/Reset Module build.