Tandy 600 Programmer's Reference Manual page 115

Function
1Fh
-
Put
Field to
Specified
Record
Parameter Block:
00
FILE_HANDLE_1
File Identifier
01
RECORDED
Record
Identifier
02
FIELDJD
Field Identifier
03
TRANSFERJ.ENGTH Number
of
bytes
to
write
04
BUFFER
Pointer
to
buffer to write
Returr
i
Value:
AX:
STATUS
Number
of
bytes transfer
The
FILEHANDLE
parameter
specifies the
file
handle
of
a previously
opened database
file.
The
RECORDID
parameter
specifies
the record
to
which the data
is
to
be
written.
The
FIELDID parameter
specifies
the
field
ID of the
field
to
access.
The
TRANSFERLENGTH
parameter specifies the
number
of
bytes
to
be
written to the
field.
The
BUFFER
parameter
specifies the offset
from
the
segment
in
DS
of
the buffer
containing the
data
to
be
written,
On
return,
AX
will
contain the actual
number
of
bytes written to
the
field.
The
bytes transferred
will
always be taken
starting at
the beginning of
the
buffer.
It
is
not
possible
to
write
a
field in
a
series of partial writes.
Error Returns:
110