My computer is Amiga 1200 from ESCOM with 3.1 ROMs.
I installed AmigaOS 3.1.4, MMU libraries and latest version of ACA1233nLib in system.
After that, I add a call to ACAMapRom in the first line of mi Startup-sequence (kick.a1200.46.143 is the name of the ROM provided by Hyperion):
SYS:C/ACAMapROM Q SYS:DEVS/Kickstarts/kick.a1200.46.143
When my computer starts, I see lines in my screen for a second, ¿ACAMapROM activity?.
After than nothing happens and y must power off my computer and boot with the 2 mouse buttons pressed to edit de startup-sequence and comment the call to ACAMapROM.