Registers D-13
Table D–5 IER_CM Register Fields
Name Extent Type Description
Reserved [63:39]
EIEN[5:0] [38:33] RW External Interrupt Enable
SLEN [32] RW Serial Line Interrupt Enable
CREN [31] RW Corrected Read Error Interrupt
Enable
PCEN[1:0] [30:29] RW Performance Counter Interrupt
Enables
SIEN[15:1] [28:14] RW Software Interrupt Enables
ASTEN [13] RW AST Interrupt Enable
When set, enables those AST
interrupt requests that are also
enabled by the value in ASTER.
Reserved [12:5]
CM[1:0] [4:3] RW Current Mode
00 Kernel
01 Executive
10 Supervisor
11 User
Reserved [2:0]