ao486
Added 2024-12-27 08:02:55 +0000 UTCOPL3 fixes (Greg Taylor).
Fixes and tweaks in VGA, BIOS, PIT, RTC, CPU (humply).
Note: there is a fix for TSS task switching, and while it fixes DOS4GW, DJGPP, CWSDPMI, SoftICE and other problems, it introduces issues in Win95 (but not in Win98 it seems), so this fix is optional and can be enabled in OSD "Hardware" page.
