Int E0  - Conccp/m,dr Multiuser Dos - "q_cread" - Conditionally Read Msg   [O]

   CL = 8Ah
   DS:DX -> queue parameter block (QPB) (see #3699,#3784)

Return: AX = status (0000h success, FFFFh failure)
   CX = error code (see #3692)

Note:  also supported by REAL/32

See Also: INT E0/CL=87h,INT E0/CL=89h,INT E0/CL=8Ch,INT E0/CL=B6h