Interrupt 21H, Record Functions, FCB
◄INT 21H Summary► ◄Contents► ◄Index► ◄INT Instruction►
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You can perform all the functions below more easily with DOS2 functions.
The services below are documented so you can analyze code written for DOS1.
Hex # Dec # Name
14H 20 Sequential Read
15H 21 Sequential Write
21H 33 Random Read
22H 34 Random Write
24H 36 Set Relative Record Number
27H 39 Random Block Read
28H 40 Random Block Write
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