By: Ben LaHaise (bcrl.delete@this.kvack.org), May 3, 2021 4:51 pm
Room: Moderated Discussions
Ben LaHaise (bcrl.delete@this.kvack.org) on May 3, 2021 5:36 pm wrote:
...
> I recall the first MMU Motorola built for the 68k series had support for several variable
> page sizes, but later CPUs dropped support for all the oddball page sizes and ended up being used predominantly
> with 4KB pages for Unix / Linux.
I looked it up in my old Motorola manuals, and the 68030 still supported 8 page sizes from 256 bytes to 32KB, but the 68040 dropped support for all but 4KB and 8KB pages. Ah, I miss programming the Motorola 68k series.
-ben
...
> I recall the first MMU Motorola built for the 68k series had support for several variable
> page sizes, but later CPUs dropped support for all the oddball page sizes and ended up being used predominantly
> with 4KB pages for Unix / Linux.
I looked it up in my old Motorola manuals, and the 68030 still supported 8 page sizes from 256 bytes to 32KB, but the 68040 dropped support for all but 4KB and 8KB pages. Ah, I miss programming the Motorola 68k series.
-ben