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Old 22 June 2019, 16:07   #4
Toni Wilen
WinUAE developer
 
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 44
Posts: 23,048
MOVE16 is the only new user space instruction which can't explain the difference. Another possibility is FPU and program prefers to use single/double FPU instruction variants that are 68040+ (but that would have caused a crash unless program uses separate code path if 68030+FPU is detected)

Check also FPU mode, usually 64-bit host is the most optimal choice between speed and accuracy. 80-bit host mode is more accurate but mainly needed when running some math applications. Softfloat is 100% accurate (and very slow) and only needed in very specific circumstances, for example if you want to run FPU emulation software like 68040/060 missing FPU instructions.
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