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Description:
Developer:	SpeedGeek
Homepage:	http://eab.abime.net/showpost.php?p=1189690&postcount=1
Readme:	CacheDMAbench 1.1 ©SpeedGeek 2018 INTRODUCTION: CacheDMAbench is a benchmark tool for FastCache040+. It can also be used for benchmarking old Function Calls of most 68040/060 libraries. It runs a tight loop of 10000 CacheDMA Function Calls. These FCs are made in paired Cache PreDMA/PostDMA calls. A smaller number (500 or 5%) of these FCs are directed to Chip memory. The parameters of this benchmark may have no relationship to actual use but the goal here is to show the cumulative effect on CPU performance of using these FCs frequently. However, a great amount of effort was made to time these FCs as accurately as possible. Results of the benchmark are reported in Microseconds. FEATURES: - Benchmarks Cache PreDMA/PostDMA Function Calls - Uses ECLOCK timing of timer.device - Uses 64 Bit integer math FCs of utility.library (v39+) (Uses 32 Bit integer math for older versions) - 100% Assembler code REQUIREMENTS: - Amiga with 68040 or 68060 CPU and MMU - 68040.library or 68060.library - FastCache040+ DISCLAIMER: Use at your own risk. No warranty expressed or implied, etc DISTRIBUTION: This program is freely distributable but must include this text file. USAGE: - Copy this tool into your C: directory - Open a shell and execute <CacheDMAbench> - Execute FastCache040 - Execute <CacheDMAbench> again OR - Use the example script included with this archive WARNINGS: - This tool disables multitasking for a short time (but not interrupts). This seems to be a somewhat fair balance between accuracy and system friendly operation. - This tool may occasionly exit with a "Sorry, benchmark took too long." message. This happens either to avoid reporting bogus results or something even worse... the infamous Divide by Zero exception! NOTES: - FastCache040+ should be renamed to "FastCache040" because the "+" character causes problems with script execution (due to an undocumented feature of the Amiga Shell). - Do NOT expect the results to be exactly the same each time the benchmark is executed. 68040s are moderately dynamic in performance and 68060s are extremely dynamic! - Benchmark result comparisons against other users systems have no practical use. Benchmark result comparisons on your system are exactly what this tool was developed for! HISTORY: v1.0 - First release v1.1 - Fixed address and size bugs in FC loop code which could have affected the results.
Upload Date:	Dec 22 2019
Category:	System/Patchs/040-060
Download:	CacheDMABench_1.1.lha
Size:	2 KB
Downloads:	632
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