Patch to use 2SIO as console no matter what sense switches are set to. Useful when sense switch input is not working. Edit the disk image file and change the two bytes starting at the location specified below from "DB FF" to "3E 10." BASIC 4.0 51F0 BASIC 4.1 546E BASIC 5.0 60A6 BASIC 300-5-C 5D6D BASIC 300-5-F 6189 Altair DOS 2274