Preprocessor Interface Description - HP E2444A User Manual

Logic Analyzer Required:
Number of Probes Used:
Environmental
Temperature:
Altitude:
Humidity:
Preprocessor
Interface
Description
General Information
3-2
HP 1650A, HP 1650B, HP 1652B, HP 1660A/61A, HP 16510A,
HP 16510B, HP 16511B, HP 16540/16541A,D (Master Card and two
expansion cards), HP 16542A (Master Card and four expansion cards),
or HP 16550A
Five 16-channel probes
Operating: 0 to + 55 degrees C
(+ 32 to + 131 degrees F)
Nonoperating: -40 to + 75 degrees C
(-40 to + 167 degrees F)
Operating: 4600 m (15,000 ft)
Nonoperating: 15,300 m (50,000 ft)
Up to 90% noncondensing. Avoid sudden, extreme temperature
changes which could cause condensation within the instrument.
The primary function of the HP E2444A Preprocessor Interface is to
connect the target microprocessor to the logic analyzer, and to perform
the interface logic required to identify address pipelining and 16-bit or
32-bit cycles. The HP E2444A Preprocessor Interface performs this
primary function by:
•
Latching and buffering the address, status, and data bus of the
80386DX/DXL microprocessor so that address, status, and data
can be sent to the logic analyzer at the same time.
•
Generating the logic analyzer clock from the appropriate
80386DX/DXL microprocessor signals and bus conditions.
•
Synthesizing address lines A0 and A1 from the BE0# through
BE3# lines so that the inverse assembler can identify the address
for A0 and A1.
80386DX/DXL Preprocessor Interface
HP E2444A