INT 21 - DOS 3.1+ - SET EXTENDED ERROR INFORMATION
AX = 5D0Ah
DS:DX -> 11-word DOS parameter list (see AX=5D00h)
Return: nothing.  next call to AH=59h will return values from fields AX,BX,CX,
DX,DI, and ES in corresponding registers
Note:   documented for DOS 5+, but undocumented in earlier versions

See also: 2159

215D0A - DOS 3.1+ - SET EXTENDED ERROR INFORMATION