IBM Professional Series User Manual page 172

O(Rl)
=
CL8'f lename'
8(Rl) CL8'f letype'
16(Rl)
=
CL2'f lemode'
HSTFSR will pass the following to HST ACC in the
Registers.
Rl
=
The data is in the above format.
R13
=
Systems save area.
R14
=
Return pointer to VMPCSERV at Exit time.
R15
=
Entry Pointer for addressability.
HSTACC must clear register 15 or the return code
will be passed back to the local VM/PC
indicating that there was an error if R15 is non-zero.
Chapter 6. Remote Services
6-23