Guides
About
Previous
Up
Next
Dos Tables
Interrupts
DOS functions
DOS List formats
DOS Error codes
DOS Data Structures
Ports, EMS
I/O ports
EMS Error codes
Ansi control sequences
ASCII Chart
Line-Drawing Chars
Special Characters
Color Chart
Keyboard Codes
Hardware
8237A-5 DMA Controller
8259A Interrupt Controller
8253-5 Programmable Interval Timer
8255A-5 Programmable Peripheral Interface
Serial Communication (RS-232)
Net Bios
Video
Credits
End logical file locking (INT 21h, C9h - Novell NetWare 4.0)
Entry:
AH = C9h
Return:
AL = error code