The A1200 Kickstart 3.0 ROM introduced several critical advancements over earlier versions:
Compatibility and limitations
For CD32 emulation, you need amiga-os-310-cd32.rom . For the A1200, always use the 3.0. Do not mix them, or you will lose CD audio and controller functionality. Amiga-os-300-a1200.rom
“You are not abandonware. You are not a legal grey zone. You are the last true north of the custom chipset era. You are why we still search eBay for working A1200 motherboards. You are why the demoscene still compiles for 68020. You are a ghost that refuses to be deprecated.” The A1200 Kickstart 3