Read that error as "Out of memory". You need to free memory, add swap, or reduce DOSBox memory consumption (give the virtual machine less memory).


For the next version I'm considering undefining USE_FULL_TLB (will help with memory usage but may introduce other bugs according to docs/PORTING) and profiling. But it won't happen this week.

I don't know what to do about the mouse issues. Other than suggesting to play with the mouse acceleration settings in Windows, since mouse works for me in QBASIC.