3 ms·

After DOS 3.31, many undocumented commands and BIOS IRQs were removed. This broke some software but it is interesting to see these undocumented commands beyond

by mycall 6y ago

After DOS 3.31, many undocumented commands and BIOS IRQs were removed. This broke some software but it is interesting to see these undocumented commands beyond DOS 4 still existing.