Later Mac ROMs were 512KB, same with the later Amiga Kickstarts (3.x) That was a lot of space for the late 80's and early 90's. Interrupts were supported (8, if

Later Mac ROMs were 512KB, same with the later Amiga Kickstarts (3.x) That was a lot of space for the late 80's and early 90's. Interrupts were supported (8, if I recall.) And 68000 machines didn't support virtual memory until the 68010 and later, so no issues with page faults. I still remember the day teenage me got an Amiga 500 with a whopping 512K of RAM, and witnessed the power of multitasking, way back in 1988.