SurePOS 500
•Memory Location 40:96h
This word contains the extended keyboard status.
•Memory Location 40:72h
This word contains the soft reset flag.
•Int 10h – Video
This interrupt is supported by the video ROM. Int 11h - Equipment Determination
Returns the data at memory location 40:10h.
•Memory Location 40:10h
This word contains the equipment list.
•Int 12h - Base Memory Size
Returns the value at memory location 40:13h.
•Memory Location 40:13h
This word contains the amount of memory up to 640 KB. This count will often be less than 640 KB due to NIC ROM bootloaders.
•Int 13h - HDD and Floppy Diskette Services
•Int 14h - Serial Communication Services
•Int 15h - System Services
Sub functions are those defined by the IBM Personal System/2 and Personal Computer BIOS Interface Technical Reference manual. Additional sub function support is OEM dependent.
•Int 16h - Keyboard Services
•Int 1Ah -
•Int 1Bh – CTRL+Break Handler
•Int 1Ch - Periodic Timer Interrupt
•Int 1Dh - Video Parameter Table Set by the video BIOS
•Int 1Eh - Floppy Diskette Drive Parameters Points to an
•Int 1Fh - Video Graphics Characters Set by the video BIOS
•Int 23h - CTRL+C, CTRL+Break Handler
•Int 41h - HDD C: Drive Parameters
Points to a
•Int 46h - HDD D: Drive Parameters
Points to a
3.5Fixed 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.
Location
F000:E05Bh
F000:E2C3h
F000:E6F2h
F000:E6F5h
F000:E729h
F000:E739h
F000:E82Eh
F000:E987h
F000:EC59h
F000:EF57h
F000:EFC7h
F000:EFD2h
Description
POST Entry Point
NMI Entry Point Int 19h Entry Point Configuration Data Table Baud Rate Generator Table Int 14h Entry Point
Int 16h Entry Point
Int 09h Entry Point
Int 13h Floppy Entry Point Int 0Eh Entry Point
Floppy Disk Controller Parameter Table Compatibility for printer Int 17h
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