The new Crucible v2.0 beta app for newer MacOS has been released and is available to download for free from the Infinity Products store page.
Additional features include:
-ROM file creation can be done in 4 splits, 2 splits and single files.
-In split mode, you can choose between 4 splits and 2 splits. This is for dividing into Lo and Hi, or LL ML MH HH. This is not a ROM SIMM specific configuration, but a general Mac ROM chip configuration.In addition, the reason for providing the x2 mode is that, specifically, when flashing data optimized for 27C256 to 27C512, there are rare cases where you simply want to double it. That’s the reason.
-In Join mode, simply joins ROMs in series, which is useful for joining a BootROM to a BaseROM etc
https://en.infinityproducts.co.jp/product-page/smc-rom-simm-card
