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Bitfields for Intel 82371MX Local Trap Mask for Device 3 register

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Bit Description

7 - 4

Local Trap COM Port Select
1000 = COM4 02E8h-02EFh
0100 = COM3 03E8h-83EFh
0010 = COM2 02F8h-02FFh
0001 = COM1 03F8h-03FFh

3 - 0

Local Trap Mask

Note:

Bit 7-4: These bits when set cause an SMI# when access to the corresponding I/O port range is made.
Bit 3-0: This field selects the range of trappable addresses (in bytes).

See Also:

#01168