Tandy 600 Programmer's Reference Manual page 120

2. Bit
80h
-
If
this
bit is
set,
the
system workspace
file
&.KSYS006.SYS
will
be used as
the
workspace
file.
If
another
workspace
file
name
is
specified,
it
will
be ignored
and
Ktt
SYS006.SYS
will
be
used.
There
are certain restrictions
on programs which
use
the
system workspace
file.
They
are allowed
to
use the
expand and reduce
file
system
calls
to
perform
dynamic
memory management,
but
must never reduce the size of
the
file
below
its
size
on
entry
to
the
program.
Programs which use the
system workspace
file
must
also not
quit
with
a negative
termination
code
in
AL
(delete
workspace
file
on
termination).
Although
the
workspace
file is
not deleted
on
exit,
each invocation
of
the
program
will
enter
through the
initial
invocation entry
point.
Thus, the terminate
process
system
call will
never
return.
In
order
to
use
the
system workspace
file,
the
initial
AMI
size
used by
the
program must
not
be
larger
than
4096
bytes.
4.
AMIVIS
-
AMI
Visability
Type.
Used
by the
system
manager
to
determine
when
the application
is
to
be
displayed
in
the
left
margin, possible values
are.
ASCII
code Display Style
V Always
visible
S Only
visible
when owned
files
are present
|
Always
invisible
(together with
owned
files)
5.
AMITYP
-
Owned
File
Type
Used by system
manager program
to fell
if
owned
files
are
AMI'S
or
data
files,
possible
values are:
ASCII code
Owned
file
type
Owned
files
are
AMIs
Owned
files
are data
6.
AMI
EXT
-
Owned
Extension.
Used by system
manager
program
to
associate
owned
file
with application, the
3 bytes
contain the
ASCII characters
that
make
up
the extension. This
field
should only contain
upper case ASCII characters that
are
legal in
a
file
name, and should
be blank
padded on
the
right
if
less
than
3 characters
long.
7.
APLIP
-
Application
Initial
Pc.
The
address
to
jump
to within
the load
file
on application
start
up.
8.
APLSP
- Application
Initial
Sp.
Place
to
set
SP
within application's
AMI
before
starting to
execute
the load
file.
115