IBM SurePOS 500 User Manual

SurePOS 500 4846-XX5 Technical Reference
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• 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 - System-Timer Services, PCI BIOS
• 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 11-byte data structure
• 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 16-byte data structure for drive C:
• Int 46h - HDD D: Drive Parameters
Points to a 16-byte data structure for drive D:
3.5 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.
Location Description
F000:E05Bh POST Entry Point
F000:E2C3h NMI Entry Point
F000:E6F2h Int 19h Entry Point
F000:E6F5h Configuration Data Table
F000:E729h Baud Rate Generator Table
F000:E739h Int 14h Entry Point
F000:E82Eh Int 16h Entry Point
F000:E987h Int 09h Entry Point
F000:EC59h Int 13h Floppy Entry Point
F000:EF57h Int 0Eh Entry Point
F000:EFC7h Floppy Disk Controller Parameter Table
F000:EFD2h Compatibility for printer Int 17h

IBM SurePOS 500 Specifications

General

Brand	IBM
Model	SurePOS 500
Category	Touch terminals
Language	English