00001970h, Bus controller debug register 0 msr (bdr0_msr), 00000000_00000000h – AMD Geode LX [email protected] User Manual
Page 197: 00001971h, Bus controller debug register 1 msr (bdr1_msr), 00001972h, Bus controller debug register 2 msr (bdr2_msr), 00001973h, Bus controller debug register 3 msr (bdr3_msr)
AMD Geode™ LX Processors Data Book
197
CPU Core Register Descriptions
33234H
5.5.2.107 Bus Controller Debug Registers 0 through 3 MSRs
Each of these registers specifies an address that must match the physical address currently in the bus controller in order to
trigger the breakpoint. BDR7 is used to enable and specify the type of BDR0-BDR3. If a breakpoint is configured as a mem-
ory breakpoint, the address is matched on a QWORD granularity. If a breakpoint is configured as an I/O or MSR breakpoint,
the address is matched based on all 32 bits.
Bus Controller Debug Register 0 MSR (BDR0_MSR)
Bus Controller Debug Register 1 MSR (BDR1_MSR)
Bus Controller Debug Register 2 MSR (BDR2_MSR)
Bus Controller Debug Register 3 MSR (BDR3_MSR)
MSR Address
00001970h
Type
R/W
Reset Value
00000000_00000000h
MSR Address
00001971h
Type
R/W
Reset Value
00000000_00000000h
MSR Address
00001972h
Type
R/W
Reset Value
00000000_00000000h
MSR Address
00001973h
Type
R/W
Reset Value
00000000_00000000h
BDRx_MSR 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
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
PHYS_ADDR
BDRx_MSR Bit Descriptions
Bit
Name
Description
63:32
RSVD
Reserved. (Default = 0)
31:0
PHYS_ADDR
Address Match Value for BDRx. (Default = 0)