1421 INT 14 - X00 FOSSIL - STUFF RECEIVE BUFFER
1421 INT 14 - Alloy MW386 v1.x only - RELEASE PHYSICAL COMMUNICATIONS PORT
1421 INT 14 - MultiDOS Plus - TRANSMIT CHARACTER
1421 INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - OUTPUT CHARACTER, WITH TIMEOUT
1421 INT 14 - HUNTER 16 - EXTENDED CONTROL