INT 61 u - PC/TCP kernel v2.05 - "nm_htable" - ???
        AH = 51h
        CX = size of destination buffer
        DS:DX -> 127-byte buffer containing ???
        ES:DI -> destination buffer or 0000h:0000h
Return: CF clear if successful
            DX:AX -> ???
        CF set on error
            AX = error code (see INT 61"PC/TCP")
SeeAlso: INT 61/AH=00h"PC/TCP"