Comment on Shhh: The Undocumented DOS Commands (1999)Comments−mycall6yAfter 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.
Comments
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.