Setting Up The Preprocessor Interface Hardware; To Select The Operating Mode - HP E2466C User Manual

Setting Up the Preprocessor Interface
Hardware
Setting up for the preprocessor interface hardware consists of the following
major steps:
Turn off the logic analyzer and the target system.
1
To protect your equipment, remove the power from both the logic analyzer
C A U T I O N
and the target system before you make or break connections. Because the
logic analyzer supplies power to the preprocessor interface, the logic
analyzer should always be powered up before the target system; when
powering down, power down the target system first and then power down
the logic analyzer.
Set the State/Timing Mode (Mode) switch and the
2
Compacted/Expanded Clock Qualifier switch according to the type of
analysis you wish to perform.
Disassemble the S.E.C. cartridge containing the microprocessor.
3
Install the preprocessor interface in the target system.
4
Connect the logic analyzer pods to the cable connectors of the
5
preprocessor interface board.

To select the operating mode

Two switches on the preprocessor select the operating mode. The LEDs
indicate the selected mode (see table 1). The HP 16505A Prototype Analyzer
must also be updated to match the Mode (state or timing) selected by the
switches.
The MODE switch selects either State or Timing mode. In State mode, the
QUAL switch selects the clock qualifier to be either Compacted or Expanded.
The QUAL switch has no effect in timing mode.
The Expanded clock qualifier acquires a state for every bus clock when there
are transactions outstanding on the bus; no states are acquired when there
are zero outstanding transactions.
The Compacted clock qualifier maximizes the number of transactions
captured and is generally preferred.
Preprocessor Interface for the Pentium II Processor 1-5