mamedev/mame
Mar 2026 – Mar 2026
1 Month active
Languages Used
C++
Technical Skills
C++ programmingCPU EmulationCPU architectureMemory ManagementPerformance Optimizationcache management
Jesus Ramos
PROFILE
Jesus Ramos
Jesus Ramos enhanced the SH7709S memory timing and cache subsystems in the mamedev/mame repository, focusing on improving emulation performance and accuracy for memory-intensive CPU paths. He refined timing calculations, optimized cache writeback and replacement logic, and addressed DRC memory access correctness to better model hardware behavior. Using C++ and leveraging expertise in CPU architecture and memory management, Jesus converted CPU cycles to bus cycles for more accurate timing semantics and adjusted bank conflict penalties to reduce unnecessary stalls. His work delivered tangible speedups, improved timing fidelity, and resulted in a cleaner, more maintainable codebase for SH7709S memory emulation.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
5Total
Bugs
0
Commits
5
Features
1
Lines of code
862
Activity Months1
Your Network
106 peopleWork History
March 2026
5 Commits • 1 Features
Mar 1, 2026March 2026 monthly work summary for mamedev/mame. Focused on SH7709S memory timing and cache subsystem improvements to enhance emulation performance and accuracy for memory-intensive SH7709S paths, including cv1k titles. Also addressed critical DRC memory access correctness and refined cache/bank-conflict handling to reduce stalls and improve overall stability. The work delivers tangible speedups, improved timing fidelity, and a cleaner, more maintainable codebase for SH7709S memory subsystems.
5 Commits • 1 Features
Mar 1, 2026March 2026 monthly work summary for mamedev/mame. Focused on SH7709S memory timing and cache subsystem improvements to enhance emulation performance and accuracy for memory-intensive SH7709S paths, including cv1k titles. Also addressed critical DRC memory access correctness and refined cache/bank-conflict handling to reduce stalls and improve overall stability. The work delivers tangible speedups, improved timing fidelity, and a cleaner, more maintainable codebase for SH7709S memory subsystems.
March 2026
Activity
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Quality Metrics
Correctness84.0%
Maintainability80.0%
Architecture80.0%
Performance84.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++
Technical Skills
C++ programmingCPU EmulationCPU architectureMemory ManagementPerformance Optimizationcache managementembedded systemslow-level programmingperformance optimizationsystem programming
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