Category: DOS kernel
INT 21 - DOS 5+ - SET EXECUTION STATE AX = 4B05h DS:DX -> execution state structure (see #01625) Return: CF clear if successful AX = 0000h CF set on error AX = error code (see #01680 at AH=59h/BX=0000h) Note: used by programs which intercept AX=4B00h to prepare new programs for execution (including setting the DOS version number). No DOS, BIOS or other software interrupt may be called after return from this call before commencement of the child process. If DOS is running in the HMA, A20 is turned off on return from this call. SeeAlso: AH=4Bh