Tandy TRS-80 4D - Page 41

KSM/FLT.
Lets you save
TRSDOS
and BASIC
instructions
that
you most often
use and
quickly recall
them from the
keyboard.
For ex-
ample,
you can reprogram
the
"C"
key
to rep-
resent the
CAT :1 (catalog)
command.
SET/FILTER.
If you are an
assembly
language
programmer,
lets
you change the
programs
that control
each part of
the hardware.
For More
Information, All
Tandy
computer
languages
come with
reference manuals.
Also,
your Radio
Shack store
sells
tutorials that
teach
you how to program.
Operating
Systems
If
you purchase
an application program
for the
Model III,
you'll find
it comes
with a different
version
of
TRSDOS than
the one we've
de-
scribed
in this
manual. Model III
programs
run
under
TRSDOS
Version
1,
rather
than
TRSDOS Version
6.
You need
not be concerned
about
this
during
normal
operation of
the program,
since your
computer
is 100%
compatible with
TRSDOS
Version
1. Simply follow
the
instructions in
your application
program manual.
The few dif-
ferences
you
will
notice are:
•An application
program
running
under
TRSDOS Version
1 can display
64 charac-
ters
on
16 lines. A program
running
under
TRSDOS
Version
6 can display
80 charac-
ters
on 24
lines.
•
TRSDOS
Version
1 commands
work slightly
differently
from
TRSDOS Version
6 com-
mands.
Follow
the instructions
in your appli-
cation
manual,
and you'll have
no problems.
One other
difference
could concern
you, but
only in
a
rare
situation.
The two versions
of
TRSDOS
format
diskettes differently.
They
cannot read
each other's diskettes.
31