HP E2454A Intel 80386EX Preprocessor Interface

Product Summary

The Hewlett-Packard E2454A preprocessor interface for the Intel386EX provides an electrical and mechanical connection between your target system and an HP logic analyzer.

Preprocessor hardware captures processor signals and passes them to the logic analyzer at the appropriate time, depending on the type of measurement you are making. With the preprocessor plugged in, both state and timing analysis is available. Preprocessor software configures the logic analyzer, labeling address, data and status lines. Additionally, when a state trace is displayed the data is deassembled and listed in 80386 mnemonics. The disassembler also decodes FPU instructions for target systems that use the Intel387.

Product Features

• All processor and floating point instructions are supported
• All bus cycles are supported
• The following CPU operations are supported
  • Memory, I/O Read/Write
  • Opcode Fetch
  • Interrupt Acknowledge Type 0-255
  • Halt/Shutdown
  • 80287/80387 Coprocessor operations
  • Register Sizes 16 and 32
• Disassembly is synchronized at branch addresses
• The following types of instructions and operations can be selected to be displayed or suppressed:
  • unexecuted prefetches
  • jumps
  • calls/returns
  • memory read/writes
  • I/O read/writes
  • special cycles
  • interrupt acknowledge cycles
• FPU instructions are decoded in the display
• Queue flush instructions are identified and marked for all bus sizes
  

  
  
  

  Product Specifications

  Microprocessor Compatibility
  16 MHz 132-pin PQFP Intel 80386EX
  20 MHz 132-pin PQFP Intel 80386EX
  25 MHz 132-pin PQFP Intel 80386EX
  
  Logic Analyzers Supported
  HP 16550A
  HP 1660A/C, 1661A/C and 1662A/C
  
  Pods Required
  Three, 34-channel high-density cables are supplied with the product.
  Two of these are required for inverse assembly;  the third is used 
  for monitoring additional signals.
  
  Adapters
  No additional termination adapters are needed.
  
  Signal Line Loading
  8pF on all lines, except ADS and READY
  15pF on ADS and READY
  

  
  

  
  
  

  Product Ordering Information

  HP E2454A	Intel 80386EX Preprocessor Interface
  
  
  

  
  

  
  
  

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