Intel 2920 Design Handbook page 10

INTRODUCTION AND TERMINOLOGY
The AS2920 Assembler tests the logical sequence, syn-
tax, and editing of the program, and issues error or
warning messages. When assembly is successful, the
code used to program the EPROM is created. This code
is also used as the program input to the SM2920
Simulator.
The Simulator can be used to test the actual operation
of the 2920 prograrp. For example, the first step of such
a test might be to specify an input waveform; such as a
sweeping sinusoid for a filter application, which will test
the performance of the filter over different frequencies.
• Establish Objectives
• DeSign Block Diagram
• Translate Functional
Blocks Into Program
Blocks
• 2920 Assembler
(Intellec®Senes II)
• Signal Processor
Appllcallons
Soltware/Compller
If a problem occurs, i.e., unexpected or erroneous out-
put, the debugging tools of the Simulator can be called
into action to test variables at different points of the
2920 program.
If a program change is needed, it can be implemented
immediately within the Simulator, by directly changing
the contents of the program through the Intellec system
keyboard. The revised program is then tested anew.
Every parameter of the 2920's operations can be tested,
changed, traced, or stored on diskette files for later
analysis or documentation .
• SimUlator
• Test Program
• System Debug
• Evaluate
System
Performance
• Program EPROM
(Intellec®)
• UPP 103
• 2920
Personality
Card
• DeSign
Venllcallon
Figure 1-1. 2920 Design Sequence
Table 1-3. Development System Provides Computer Aided DeSign Contrast
Between Discrete Component and 2920 DeSign Methodologies
Task Discrete Component 2920 Approach 2920 Benefits
1. Specify Product Develop Block Diagram Develop Block Diagram
Same starting point
2. Develop Prototype A. Design Circuits A. Translate block Reduce 2-3 weeks to 2-3
B. Design Breadboard
diagram into program days
C. Build Breadboard
B. Use Signal Processing
-Locate parts
Applications
Software/Compiler
-Put together
C. Assemble program
3. Troubleshoot prototype A. Input signal Via Simulator
Use classic troubleshooting
B. Observe output with scope A. Specify input signal techniques on interactive
and DVM or Spectrum B. Observe output and terminal
Analyzer RAM contents
4. Correct Errors A. Replace Component A. Edit and assemble Reduce 3 degrees of error to
B. Redesign layout program 1; save time
C. Redesign circuit B. Go back to 3
D. Go back to 3
5. Documentation Write down observation data, Data recorded on develop- Accuracy increases;
and write report ment system in an easy to Time savings
follow report
1-3