Int 21 Fn 4403  U - Ai Architects - Os/x86??? - Api                        [E]

   AX = 4403h
   BX = handle for device "AIA_OS"
   CX = number of bytes to write (ignored)
   DS:DX -> 12-byte buffer (see #1213), first byte is command:
         81h installation check
         82h get API entry point
         84h uninstall

Return: CF clear if successful
       AX = number of bytes actually written
       DS:DX buffer filled
   CF set on error
       AX = error code (01h,05h,06h,0Ch,0Dh) (see #1366 at AH=59h)

Notes: these functions are only available if the DOS extender was loaded as a
     device driver in CONFIG.SYS
   called by TKERNEL (a licensed version of AI Architects/Ergo OS/x86)

See Also: INT 2F/AX=FBA1h/BX=0081h,INT 2F/AX=FBA1h/BX=0082h
Index: installation check;OS/x86|entry point;OS/x86|uninstall;OS/x86

Format of buffer on return:
Offset Size    Description (Table 1213)
 00h  4 BYTEs  signature "IABH"
---if function 81h---
 (no additional fields)
---if function 82h---
 04h   DWORD   pointer to API entry point (see INT 2F/AX=FBA1h/BX=0082h)
---if function 84h---
 04h   WORD    success indicator
 06h   WORD    segment of ???
 08h   WORD    segment of ??? memory block to free if nonzero
 0Ah   WORD    segment of ??? memory block to free if nonzero