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Apple IIgs core for MiSTer FPGA

Year2026
PublisherMiSTer-devel
DevelopersMiSTer-devel contributors
Other RequirementsA MiSTer FPGA (DE10-Nano) with SDRAM. ROM images.
Release StatusOpen source, initial public release July 2026

About

A Verilog recreation of the IIGS for the MiSTer platform, released in July 2026. It runs a cycle-exact 65C816 at the stock 2.86 MHz (RAM refresh delays included), has an integrated ZipGS-style accelerator with the software register unlocks, and was tuned against Clemens, KEGS, MAME and real hardware. Not emulation in the software sense: the logic runs on the FPGA, with real-time behaviour that software emulators approximate.

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