I decided to do some refactoring. Instead of duplicating all fpu macros for x86_64, I modified existing ones to work on both 32bit and 64bit (as maintaining duplicates would mean more work). Patch does following: 1. Rename all %%eax => to AX macro, which is defined as: #ifdef __x86_64__ #define AX " …

Is it ok to leave MSVC asm out? I don't how to do 64bit asm on with it, and would not have means to test it. Also is patch over 0.74 ok, or should it be over latest svn version?

Linux distributions don't provide 32bit dosbox on x86_64. And building working dosbox required building required 32bit libraries... adding i387 FPU to x86_64 build of dosbox is less work than that.

Hello, I tried Carmageddon 1 with dosbox-0.74, got those horrible vertical bars. So I searched for solution and found out about 80bit vs 64bit floating point issue. Then I checked code and saw that on 32bit x86 dosbox uses i387 fpu using assembler macros and started wondering why it is not used for …