GSA Schedule Contract

System Overview

C-TAC Plus Z8001/Z8002 is an embedded system analyzer. It provides simultaneous Real-Time Non-Intrusive (RTNI) monitoring of all key points in the system.

The monitoring is done on a completely non-intrusive basis without the injection of wait states or cycle stealing, and does not affect bus timing or message sequencing. The C-TAC Plus also provides time correlation of data across multiple processors, backplanes, and networks as well as system level evaluation in the operational environment.

Key Benefits

  • Data and event correlation and tracing across multiple processors and data busses
  • Dramatic cost savings in resolving software and integration problems
  • Ability to significantly shorten project schedules
  • Significant and affordable improvements in software quality
  • Includes both real-time non-intrusive (RTNI) monitoring and emulator debug features
Embedded System Lifecycle Diagram

Embedded System Lifecycle Diagram

Z8001/Z8002 channel

The Z8001/Z8002 Channel is designed to provide continuous RTNI monitoring for the Z8001/Z8002 embedded system. The monitoring is done on a completely non-intrusive basis, without the injection of wait states or cycle stealing.

Software timing and sequencing are not affected by the monitoring function. Multiple channels can be placed in a single C-TAC Plus unit to simultaneously monitor additional processors or buses.

Channel Cross Triggering

The Z8001/Z8002 Channel is able to cross trigger with other channels (processors or buses) or with external equipment.


All C-TAC Plus Channels use a common time stamp. This feature allows time-correlation of data collected from multiple channels and/or multiple bus channels.

Modes of Operation

Image: Real-time display of up to 250 variables.

Log: Continuously recorded trace of user events to disk. Burst recording rate at target speed. Sustained recording rate of more than 40,000 events/second.

Snapshot: Re-circulating trace of user events to memory; delayed triggering for pre-, post- and center-trigger placement.

Code Coverage: Maintains a scoreboard of code locations accessed during a test.

Common User Interface

Test setup, control, and post-run analysis are accomplished with a symbolic user interface (Microsoft Windows based), which significantly increases user productivity.

Graphical Data Analysis

Graphical analysis software allows the user to plot variable data and profile procedures and code execution quickly and easily.

Variable Event Post-run Analysis

Variable Plot: Linear or scatter plot of up to 6 variables as a function of time.

Procedure Event Post-run Analysis

Process Timeline: Flow of program execution at the procedure level. Graphical presentation of procedure duration and sequencing.

Code Coverage: Indication of code and data areas accessed during the test.

C-Tac Plus Base Unit

C-Tac Plus Base Unit

Configuration for the Z8001/Z8002 Channel Monitor

  • Event Detector and Acquisition Card (EDAC) detects and captures all event data specified
  • SCSI hard drive records event data captured by the EDAC
  • Personality Interface Module (PIM) maps the Z8001/Z8002 hardware and instruction set architecture for interface with the EDAC
  • Probe Adapter (PAD) conditions the Z8001/Z8002 signals for transmission to the PIM
  • Target Lead Set (TLS) provides a custom connection between the PAD and the Z8001/Z8002

Events Detected

Access Type: Instruction, operand, I/O, DMA, interrupt.

Address Value: Up to 250 unique addresses or 83 ranges.

Data Value: Signed/unsigned byte, word and long word formats; hex, octal or decimal; =, ≠, <, >, ≤, ≥, inrange and out-of-range, comparisons (true arithmetic ranges in target representation format); multiple values for binary encoded fields.

Actions on Events

Record: Records events in trace memory.

Site Transition: Change current state to next state.
C-TAC Plus can be configured to monitor events in 64 different user definable states.

Trigger: Generates a trigger point to freeze the snapshot trace. Freeze can be delayed for pre-, post- or centertriggering.

External Trigger: Asserts one of four external trigger lines. Signals other channels, other C-TAC Plus units or other equipment that a particular event occurred within the system.

Time Sync: Asserts the external time sync line when the event occurs.

Timer/Counters: Two timer/counters are available for control of additional selected recording.

Interactive Debug

Although completely non-intrusive, the Z8001/Z8002 Channel also provides all of the intrusive interactive debug features commonly found in in-circuit emulators (ICEs) including:

  • Start, stop, single step
  • Hardware Breakpoints
  • Load/dump memory
  • Examine/deposit memory & register

High Volume Data Collection

The Z8001/Z8002 Channel standard configuration provides 120 MBytes of real-time data storage with optional extensions up to 1 Gigabyte.

Auto Symbol Translator

  • Optional feature that automates test specification setup to significantly reduce data entry time and errors.
  • Automates conversion of symbolic cross-reference information provided by the compiler toolset to the C-TAC Plus format.
  • Automates the update of addresses after a software rebuild.