AMD Geode LX 600@0.7W Data Book page 125

CPU Core Register Descriptions
5.5.2.16 XC Mode MSR (XC_MODE_MSR)
MSR Address 00001211h
Type R/W
Reset Value 00000000_00000000h
XC_MODE_MSR contains information about the current status of the processor.
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
Bit Name
63:16 RSVD (RO)
15 DM_AC_STALL
(RO)
14 FP_STALL (RO)
13 FP_ERROR
(RO)
12 FP_BUSY (RO)
11 IP_BUSY (RO)
10 DM_BUSY (RO)
9 IF_BUSY (RO)
8 DM_EX_DELAY
(RO)
7 IQ_EMPTY (RO)
6 WAIT_FPINTR
(RO)
5 FLUSHING (RO)
4 HALTED (RO)
3 SUSPENDED
(RO)
2 NMI_ACTIVE
1 DMM_ACTIVE
0 SMM_ACTIVE
AMD Geode™ LX Processors Data Book
XC_MODE_MSR Register Map
RSVD
XC_MODE_MSR Bit Descriptions
Description
Reserved (Read Only).
Data Memory Subsystem Stall Address Calculation Unit (Read Only). DM wants no
more requests from AC.
Floating Point Stall (Read Only). FP is stalling the pipeline.
Floating Point Error (Read Only). FP is reporting an error.
Floating Point Busy (Read Only). FP is reporting that it is not idle.
Instruction Pipeline Busy (Read Only). IP is reporting that it is not idle.
Data Memory Subsystem Busy (Read Only). DM is reporting that it is not idle.
Instruction Fetch Busy (Ready Only). IF is reporting that it is not idle.
Data Memory Subsystem Execution Delay (Read Only). Pipeline is waiting for DM to
provide instruction data.
Instruction Queue Empty (Read Only). Instruction Queue is empty.
Wait for Floating Point Interrupt (Read Only). Processor is waiting for an external
maskable interrupt due to a FP error (CR0 NE bit is set, See Table 5-10 "CR0 Bit
Descriptions" on page 96). (Default = 0)
Flushing (Read Only). Processor is flushing the pipeline while waiting for DM to empty.
Halted (Read Only). Processor is halted. (Default = 0)
Suspended (Read Only). Processor is suspended. (Default = 0)
Non-Maskable Interrupt Active. Processor is in a NMI handler. (Default = 0)
Debug Management Mode. Processor is in debug management mode. (Default = 0)
System Management Mode. Processor is in system management mode. (Default = 0)
RSVD
33234H
9 8 7 6 5 4 3 2 1 0
125