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Memory aliasing emulation, in number of valid address bits.

Many 386/486 class motherboards and processors prior to 1995

suffered from memory aliasing for various technical reasons. If the software you are
trying to run assumes aliasing, or otherwise plays cheap tricks with paging,

enabling this option can help. Note that enabling this option can cause slight performance degredation. Set to 0 to disable.

Recommended values when enabled:

24: 16MB aliasing. Common on 386SX systems (CPU had 24 external address bits) or 386DX and 486 systems where the CPU communicated directly with the ISA bus (A24-A31 tied off)

26: 64MB aliasing. Some 486s had only 26 external address bits, some motherboards tied off A26-A31