Hi ecm,
> [1]: > https://gitlab.com/DOSx86/logger/-/blob/aae3dfddcdacfea18950a96ce9449767c20b2d66/source/logger/common.inc#L267 this got me looking into this 'too slow' detection method. and it is indeed slow. as in molasse. let me explain. a) isn't %%Comparing: inc di lodsb cmp al, [es:di] jne %%Next loop %%Comparing more or less the definition of repe cmpsw ?? b) decompiling the actual code, it's basically for (seg = 10; seg < 0xa000; seg++) { if (fmemcmp(MK_FP(seg, 9), "LOGGER", DriverLength)) { return found_our_driver_at(seg); } } return failure; that's indeed slow as it compares all memory up to 0xa000 to lookup the driver, or up to the drivers address (which is much better most of the time. when I mentioned microseconds, I had the DOS memory chain in mind where you would have to compare 20-50 locations to your drivers name. _______________________________________________ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel
