[fpc-pascal]Need help identifying purpose of function/procedures

[Trevor Jenkins]

I'm porting an ancient MS-DOS program to Linux. It has two source files.
One is Pascal the other assembler. I can cope with much of the Pascal; I
used to hack the internals of the Nagel Pascal compiler on DECsystem-10s.
And probably much of the assembler code too, which I plan to convert to
calls to the appropriate RTL routines (they mostly provide keyboard and
screen access).

However, I've found some routines/data structures that don't appear to be
in the RTL and aren't in the assembler module. I've grep the RTL
soruces and been through the on-line documentation without success. Here
they are:

FUNCTION ALLHQQ (wants: WORD): WORD; EXTERNAL;
FUNCTION ALLMQQ (wants: WORD): ADSMEM; EXTERNAL;
FUNCTION DOSXQQ (command, parameter: WORD): BYTE; EXTERNAL;
FUNCTION GetDTA: ADSMEM; EXTERNAL;
FUNCTION GETUQQ (VAR f:FCBFQQ; len: WORD; dst: ADSMEM): WORD; EXTERNAL;
FUNCTION PUTUQQ (VAR f:FCBFQQ; len: WORD; dst: ADSMEM): WORD; EXTERNAL;
FUNCTION TICS: WORD; EXTERNAL;

Does anyone recognise these functions and the FCBFQQ structure? (I know 
that the structure is a DOS FCB but I need the exact layout of the
structure.) I'd appreciate any assistance you can render.