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10-20 Vol. 3
ADVANCED PROGRAMMABLE INTERRUPT CONTROLLER (APIC)
01F0H 01FH TMR bits 224:255 Read Only.
0200H 020H Interrupt Request
Register (IRR); bits 0:31
Read Only.
0210H 021H IRR bits32:63 Read Only.
0220H 022H IRR bits 64:95 Read Only.
0230H 023H IRR bits 96:127 Read Only.
0240H 024H IRR bits 128:159 Read Only.
0250H 025H IRR bits 160:191 Read Only.
0260H 026H IRR bits 192:223 Read Only.
0270H 027H IRR bits 224:255 Read Only.
0280H 028H Error Status Register Read/Write. GP fault on non-zero
writes
0290H-
02E0H
029H-02EH Reserved
02F0H 02FH LVT CMCI Register Read/Write.
0300H-
0310H
2
030H
3
Interrupt Command
Register (ICR); bits 0-63
Read/Write.
0320H 032H LVT Timer Register Read/Write.
0330H 033H LVT Thermal Sensor
Register
Read/Write.
0340H 034H LVT Performance
Monitoring Register
Read/Write.
0350H 035H LVT LINT0 Register Read/Write.
0360H 036H LVT LINT1 Register Read/Write.
0370H 037H LVT Error Register Read/Write.
0380H 038H Initial Count Register
(for Timer)
Read/Write.
0390H 039H Current Count Register
(for Timer)
Read Only.
03A0H-
03D0H
03AH-03DH Reserved
Table 10-3. Local APIC Register Address Map Supported by x2APIC (Contd.)
MMIO Offset
(xAPIC mode)
MSR Offset
(x2APIC
mode) Register Name
R/W
Semantics Comments