Tandy 600 Programmer's Reference Manual page 51

Bios programmers
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FUNCTION
4Fh
-
Find Next Matching
File
AX
BX
CX
DX
SP;
BP:
SI:
Dl:
IP:
FLG
CS
DS
SS
ES
XXXXXXXX
XXXXXXXX
XXXXXXXX
XXXXXXXX
XXXXXXXX
XXXXXXXX
Entry:
AH
= 4Fh
(function
code)
Exit:
AX
=
Status
code
CX:DX =
File
information
buffer
Function
4Fh
returns
a
file
information block
identifying
the next
matching
file
following
a
call
to
function
4Eh.
It
is
necessary
to
call
function
4Eh
before
calling
function
4Fh.
On
return,
if
the carry
flag
is
reset the operation
succeeded and
CX:DX
contain the
address
of
a
file
information
block
in
the
same
format as
that
returned
by
function
4Eh.
If
the carry
flag
is
set
on
return,
the operation
failed,
and
the status
code
is in
AX.
Error
Returns:
46

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