FNX6809 Manuals: Difference between revisions

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There are 4 MLUTs (MMU Lookup Tables).
'''ACT_LUT''' these two bits specify which MLUT (0–3) is used to translate CPU bus address to system bus addresses.
'''EDIT_LUT''' these two bits will specify which MLUT (0 - 3) is being edited and will appear in memory addresses 0x0008–0x0010.


== Memory Map ==
== Memory Map ==

Revision as of 21:12, 31 May 2024

MMU Registers

Address R/W Name 7 6 5 4 3 2 1 0
$FFA0 RW MMU_MEM_CTRL - - EDIT_LUT - - ACT_LUT
$FFA1 RW MMU_IO_CTRL - - - - - $FFF0-$FFFF

Enable

$FD00-$FDFF

Enable

There are 4 MLUTs (MMU Lookup Tables).

ACT_LUT these two bits specify which MLUT (0–3) is used to translate CPU bus address to system bus addresses.

EDIT_LUT these two bits will specify which MLUT (0 - 3) is being edited and will appear in memory addresses 0x0008–0x0010.

Memory Map

Memory Model