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AMD Geode™ LX Processors Data Book 257
Graphics Processor Register Definitions
33234H
6.4.1.3 GLD SMI MSR (GLD_MSR_SMI)
This MSR contains the SMI and Mask bits for the GP. An SMI is asserted whenever an illegal address or an illegal type is
detected on the GLIU and the mask bit is not set. This also causes the mb_p_asmi output to be asserted. This signal
remains asserted until the SMI is cleared or the mask bit is set. An illegal address is defined as a memory mapped access
to an address offset greater than 07Fh or an MSR access to an address greater than 20000007h. An illegal type is flagged
if the GP receives a transaction whose type is not one of the following: NCOH_READ, NCOH_WRITE, NCOH_READ_BEX,
MSR_READ, MSR_WRITE, BEX, NULL.
6.4.1.4 GLD Error MSR (GLD_MSR_ERROR)
This MSR contains the Errors and Mask bits for the GP. An error is asserted whenever an illegal address or an illegal type
is detected on the GLIU and the mask bit is not set. This also causes the internal mb_p_asmi output to be asserted if the
Mask bit (MSR A0002002h[0]) is not set. The error bits remain asserted until they are cleared. An illegal address is defined
as a memory mapped access to an address offset greater than 07Fh or an MSR access to an address greater than
20000007h. An illegal type is flagged if the GP receives a transaction whose type is not one of the following: NCOH_READ,
NCOH_WRITE, NCOH_READ_BEX, MSR_READ, MSR_WRITE, BEX, NULL.
MSR Address A0002002h
Typ e R /W
Reset Value 00000000_00000000h
GLD_MSR_SMI Register Map
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
RSVD
S
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RSVD M
GLD_MSR_SMI Bit Descriptions
Bit Name Description
63:33 RSVD Reserved. Read returns 0.
32 S SMI. Indicates address or type violation. Write = 1 clears bit, write = 0 has no effect.
31:1 RSVD Reserved. Read returns 0.
0M Mask. Ignore address and type violations when set; also disable ASMI output.
MSR Address A0002003h
Typ e R /W
Reset Value 00000000_00000000h
GLD_MSR_ERROR Register Map
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
RSVD
3130292827262524232221201918171615141312111098765432 1 0
RSVD AE TE RSVD AM TM