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Status Lights
The HP processor probe communicates various modes and error
conditions via the status lights. The meanings of the status lights are
shown on the previous page.
The following table gives more information about the meaning of the
power and target status lights.
❍
= LED is off
●
= LED is on
✳
= Not applicable (LED is off or on)
Power/Target Status Lights
Pwr/Target
LEDs
Meaning
❍❍❍❍
HP processor probe is not connected to power supply
●❍❍❍
No target system power, or HP processor probe is not connected to the
target system
●❍●●
Only boot firmware is good (other firmware has been corrupted)
●●❍❍
PowerPC CPU is in a checkstopped state. The CPU must be reset before it
can be run or stepped from this state but register and memory access is
available.
●❍●❍
PowerPC CPU is stopped in the debug mode
●❍❍●
PowerPC CPU is executing user code.
●●●●
PowerPC CPU is in an unknown state. A reset from the HP processor
probe is required to clear this state.
Solving Problems
78
Summary of Contents for E3494A
Page 3: ...iii ...
Page 4: ...iv ...
Page 8: ...Contents viii ...
Page 9: ...Part 1 Installation Installation 1 ...
Page 10: ...Installation 2 ...
Page 11: ...1 Connecting to the Host Computer Connecting to the Host Computer 3 ...
Page 34: ...Connecting to the Host Computer To verify serial communications 26 ...
Page 35: ...2 Connecting to the Target System Connecting to the Target System 27 ...
Page 39: ...Part 2 Using the HP processor probe Using the HP processor probe 31 ...
Page 40: ...Using the HP processor probe 32 ...
Page 63: ...Part 3 Reference Reference 55 ...
Page 64: ...Reference 56 ...
Page 65: ...4 Designing a Target System Designing a Target System 57 ...
Page 72: ...Designing a Target System PowerPC 603 JTAG Interface Connections and Resistors 64 ...
Page 73: ...5 Specifications and Characteristics Specifications and Characteristics 65 ...
Page 77: ...6 Updating Firmware Updating Firmware 69 ...
Page 83: ...7 Solving Problems Solving Problems 75 ...
Page 102: ...Solving Problems To obtain replacement cables 94 ...