Hardware Overview; The Instrumentation Chassis; The Host Interface Board - Intel l2ICE User Manual

terminator set is used for glitch detection and multi-threshold triggering. Each terminator
set can be ordered separately.
• A microhook set that consists of 40 grabber clips (microhooks) that connect to wires
belonging to the emulation clips terminator or to the iLTA terminators. The microhooks
connect to individual leads of a dual in-line package (DIP). This set supplements the
microhooks supplied with the emulation clips pod and the iLTA.

Hardware Overview

The hardware components of the PICE system are listed in Table 1-1 and discussed in the
following sections.
The Instrum entation Chassis
The instrumentation chassis encloses a card cage and a backplane with four vacant slots, a
switching power supply, and a communications board. As many as four chassis may be daisy-
chained together in a fully-configured PICE system to allow multiprocessor emulation under
the control of a single host development system.
Both the top and front covers of the instrumentation chassis are easily removed to allow access
to system components. The four-slot card cage holds 12 in. by 12 in. (.30 m by .30 m) boards.
Three fans on the side of the card cage provide cooling.
The internal switching power supply uses line power (110 or 220 VAC) to develop the regulated
DC voltages used by the PICE system. (The host interface board obtains power from the host
development system.) The power supply has five voltages:
-5.2V D C , + 15VDC, and - 15VDC.
The communications board is part of the rear panel of the instrumentation chassis. The board
contains termination switches, rear panel connectors, and interface circuitry. The communica­
tions board handles communications with the host development system (using the host inter­
face board). The communications board also provides the link between the PICE chassis in
which it resides and other PICE chassis in the system. In multiple-chassis PICE systems, the
communications board assigns sequential unit numbers (0 through 3) to each chassis.

The Host Interface Board

Each PICE system requires one host interface board. It resides in the host development system
and controls up to four instrumentation chassis. For Intel hosts, the host interface board is a
MULTIBUS® master board that makes possible direct memory access (DMA) to MULTIBUS
board memory by the PICE system; for multiple-probe systems, the probes can share common
MULTIBUS memory. IBM PC/AT and PC/XT hosts are provided with a PC-specific interface
board that does not support MULTIBUS mapping.
1-8
+ 5VDC (two voltages),
PICE™ System Overview