Legacy 32-bit Test Software Migration to 64-bit Architecture for Enhanced Memory Capacity

The client operates complex test software applications developed over many years using diverse technologies including VBA, VB6, C++, and C, running on 32-bit Windows 7 with Excel. This legacy environment restricts memory usage, impeding performance and scalability. Their development team lacks confidence in their existing migration approach, fearing unpredictable results after long-term investments spanning over a decade, which complicates efforts to upgrade to a 64-bit environment and leverage increased memory capacity.

A large-scale manufacturer of automated test equipment and test software for semiconductor production, managing extensive codebases across multiple technologies.

• Develop a robust migration approach that overcomes 32-bit memory limitations of existing software.
• Deliver a proof-of-concept module that supports phased migration from 32-bit to 64-bit systems.
• Minimize risk of unforeseen issues post-migration through testing and validation frameworks.
• Enable the existing test software to access higher memory capacities to improve performance and data handling.
• Establish a repeatable, scalable migration process that can accommodate ongoing software expansion.

• Prototyping a migration module that dynamically transforms legacy VBA, VB6, C++, and C modules for 64-bit compatibility.
• Automated validation and testing routines to verify functional integrity after migration.
• A scalable architecture that supports incremental migration of individual modules with minimal downtime.
• Compatibility layers or wrappers to facilitate transition without significant rewrites of existing code.
• Comprehensive logging, error handling, and rollback mechanisms to manage migration risks.

• Legacy code repositories and version control systems
• Testing and validation frameworks
• Development environment tools compatible with multiple technologies
• Monitoring systems for migration progress and system health

• System scalability to support ongoing codebase growth
• High performance with minimal migration downtime
• Reliability and robustness to prevent unexpected software failures
• Security and data integrity during and after migration
• Compliance with industry standards and internal quality benchmarks

The migration project is expected to significantly enhance software performance by enabling access to larger memory pools, reduce risks associated with long-term legacy code handling, and streamline future development efforts. Anticipated outcomes include improved testing throughput, reduced maintenance costs, and a scalable architecture capable of supporting continued software expansion, ultimately leading to increased operational efficiency and competitive advantage.