MEGA65 models - sy2002/zxuno4mega65 GitHub Wiki

There are different MEGA65 models out there in the wild, so make sure you choose the right core variant for your hardware.

TL;DR

If your MEGA65 was manufactured before 2024, then choose zxuno-v1.3-r3.cor otherwise choose zxuno-v1.3-r6.cor.

Details

We are supporting these MEGA65 models: R3/R3A, R4, R5 and R6. Use the following table to ensure that you select and flash the correct .cor from the ZIP file.

MEGA65 model	Years	File name	Comment
R2	2019-2020	r2zxu08.cor	R2 is a very rare pre-series model, only 20 of them were built. We are not supporting the R2 any more, but you can still use Version 0.8 of the ZX-Uno core on R2: https://github.com/sy2002/zxuno4mega65/tree/master/bin/Version%200.8/R2
R3/R3A	2020-2023	zxuno-v1.2-r3.cor	R3 is the "DevKit" (100 were built) and R3A are batches 1 and 2. If your MEGA65 was manufactured before 2024 then you have an R3 or R3A machine.
R4	2023	zxuno-v1.2-r4.cor	Development board on our way to the R6. Only 10 of them were manufactured (board only, no complete machines).
R5	2023	zxuno-v1.2-r5.cor	Upgraded version of R4 that contains new circuits for the expansion port. Only 10 of them were manufactured (board only, no complete machines).
R6	2024+	zxuno-v1.2-r6.cor	Latest and greatest MEGA65. Manufactured from 2024 on.

Only use *.bit files if you know what you are doing.