Specifications

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5.2 Fixed BIOS Entry Points
The fixed entry points in F000: xxxx must be supported for traditional reasons. The table
below lists the fixed BIOS entry points.
Table 14 Fixed BIOS Entry Points
Location Description
F000: E05B POST Entry Point
F000: E2C3 NMI Entry Point
F000: E401 HDD Parameter Table
F000: E6F2 INT 19 Entry Point
F000: E6F5 Configuration Data Table
F000: E729 Baud Rate Generator Table
F000: E739 INT 14 Entry Point
F000: E82E INT 16 Entry Point
F000: E987 INT 09 Entry Point
F000: EC59 INT 13 Floppy Entry Point
F000: EF57 INT 0E Entry Point
F000: EFC7 Floppy Disk Controller Parameter Table
F000: EFD INT 17
F000: F065 INT Video
F000: F0A4 MDA and CGA Video Parameter Table INT 1D
F000: F841 INT 12 Entry Point
F000: F84D INT 11 Entry Point
F000: F859 INT 15 Entry Point
F000: FA6E Low 128 character of graphic video font
F000: FE6E INT 1A Entry Point
F000: FEA INT 08 Entry Point
F000: FF53 Dummy Interrupt Handler
F000: FF54 INT 05 Print Screen Entry Point
F000: FFF0 Power-On Entry Point
F000: FFF5 ROM Date in ASCII “MM/DD/YY” for 8 characters
F000: FFFE System Model 0xFC