DS:DX address of an ASCIIZ filespec of the program to load
Info: This allocates memory and loads a program. It builds a PSP and
performs all needed segment fixups in preparation for executing
the code, but does not actually begin execution.
DS:DX points to an ASCIIZ string in the form...
If the drive or path is omitted, defaults are assumed.
ES:BX points to a block of memory prepared as an ExecLoadRec that has
been filled with the information needed, similar to the needs of
On return the ExecLoadRec contains the required entry point
(lCsIp) and stack address (lSsSp) to use when starting the
Notes: There must be enough free memory for DOS to load the program.
See Also: Fn 4b00H (execute program)
Fn 4b05H (set execution state)