If You See Memory-Related Problems - Agilent Technologies E5900B User Manual

E5902B and their related PVR values.

If you see memory-related problems

The following examples are specific to PowerPC 6XX and 7XX processors. You
will need to modify these examples if you are using a PowerPC 4XX target
system.
1 Set caches and translation off:
M>reg HID0=0
M>reg MSR=0
M>
If these commands fail, just try again.
2 Now enter:
M>m -d4 -a4 0=11111111,22222222,33333333,44444444
M>m -d4 -a4 0..
00000000
00000010
00000020
00000030
00000040
00000050
00000060
00000070
M>
• If you do not see correct values written in memory, try increasing memory
delay (see pages 91, 92, 93, 94).
• If the read value is not equal to the written value, the memory controller
may not be set up correctly.
• If the read value is equal to the written value, but you still suspect memory
problems, the emulation probe firmware might not be working with cache.
3 Enter:
M>cf reset=rom
M>rst
M>m -d4 -a4 0..
• Read value not equal to the written value implies that reset is tied to
memory controller. Check HRESET and SRESET for correct connections.
Agilent Technologies Emulation for the PowerPC 400/600/700
Chapter 12: Troubleshooting the Emulation Probe
11111111 02222222 33333333 44444444
00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000
Problems with the Target System
169