User`s guide

The HP E2480A Preprocessor Interface —
At a Glance
The HP E2480A Preprocessor Interface provides a generic interface
for state and/or timing analysis between a target system using a
Motorola 68331, 68332, 68F333, 68334, 68335, 68336, 68338, or 68376
microcontroller and the following HP logic analyzers:
• HP 16550A (one- or two-card)
• HP 16554A (one- or two-card)
• HP 16555A/D (one- or two-card)
• HP 16556A/D (one- or two-card)
• HP 1660A/61A/62A, HP 1660C/61C/62C
• HP 1660AS/61AS/62AS, HP 1660CS/61CS/62CS (with oscilloscope)
• HP 1670A/71A/72A, HP 1670D/71D/72D
A probe adapter attaches to the microcontroller and, aided by a
transition board, maps the package pinout to the HP E2480A PGA
socket pinout. A seven-position switch on the HP E2480A is
programmed to identify the target system microcontroller. This is
used to configure the HP E2480A and the development environment.
Programmable, non-volatile circuitry on the HP E2480A reconstructs
multiplexed microcontroller signals configured as chip selects (A19 -
A23 and FC0 - FC2) or general I/O (SIZ0, SIZ1, DSACK0, and
DSACK1). This allows the logic analyzer to maintain complete trigger
capability and provides compatibility to HP debugging tools. The
HP E3458A Processor Probe is required for for programming the
HP E2480A Preprocessor Interface. Information on using the
Processor Probe with the HP E2480A is provided in chapter 3.
The figure on the next page shows the items used with the
HP E2480A.
ii E2480A Motorola CPU32 Preprocessor Interface