Apple IIe - Page 207

Cassette
and
Disk Storage with
the
,
Apple
lie
207
MAXFILES
MAXFILES
allows
the
users
to
specify
the
number
of
files
which
can be
open
at any
one
time.
A
maximum
of
16
files
can be
open
at any
one
time
.
Configuration
MAXFILES
x
x
is
an
integer
from
1
to
16.
The
default
value
for
x
is
3.
Each
file
specified by MAXFILES
has
595
bytes
of
memory
reserved
as
a
buffer.
One
256-byte section
of
the
buffer
is
used
for
reading
and a second 256-byte
is
used
for
writing.
The
remaining
83
bytes are used
for
housekeeping
information.
One
file
buffer
is
required
for
the
execution
of
each
of
the
following
DOS
commands:
APPEND
EXEC
OPEN
BLOAD
FP
POSITION
BRUN
INIT
READ
BSA
VE
INT
RENAME
CATALOG
LOAD
RUN
CHAIN
LOCK
SAVE
CLOSE
MON
VERIFY
DELETE
NOMON
WRITE
If
the
number
of
open
disk
files
is
at
the
limit
set by
MAXFILES
and
one
of
the
aforementioned
DOS
commands
is
executed
,
the
following
error
message
will
appear:
NO
BUFFERS
AVAILABLE
MAXFILES
should
be
executed
prior
to
loading
a
program
as
its
execution
in
the
immediate
mode
causes
the
erasure
of
Integer
BASIC programs
as
well
as
difficulties
with
strings
in
Appleso
ft.