API Reference

Complete programming interface documentation for bootOS.

Service Summary

| Interrupt | Service | Purpose | |-----------|---------|---------| | INT 0x20 | Exit | Return to bootOS | | INT 0x21 | Input Key | Read keyboard | | INT 0x22 | Output Char | Display character | | INT 0x23 | Load File | Read file | | INT 0x24 | Save File | Write file | | INT 0x25 | Delete File | Remove file |

Documentation

• System Interrupts - Complete interrupt reference
• Service Calls - Usage examples

Quick Example

    org 0x7c00
    mov al,'A'
    int 0x22        ; Output 'A'
    int 0x20        ; Exit

Related Documents

• Programming Guide
• Memory Layout