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It is a time for open-source and hardware preservation community to step in with a Free and Open Source Silicon (FOSS) replacement for Zilog Z80.
FOSS Z80 leverages OpenROAD flow and FOSS 130 nm Skywater PDK to synthesize production ready silicon. Tiny Tapeout infrastructure is used to test and pool design with many others to reduce the cost of physical chip fabrication at Skywater Foundries.
The first iteration is developed with Tiny Tapeout 07 using 130 nm process and fits on a 0.064 mm2 die area. The first fabrication is scheduled for June of 2024 as a part of CI 2406 Shuttle.
Below is the image of GDSII integrated circuit layout for FOSS Z80. It is the result of automatic place-and-route flow in OpenROAD using 130 nm "gates" logic elements.
Tiny Tapeout is an educational project that aims to make it easier and cheaper than ever to get your digital designs manufactured on a real chip.
