Operating instructions
-
-
~
[j~
~
I
inc.
BOX 120
ALLAMUCHY,
N,J, 07820
201-362-6574
HUDSON
DIGITAL
ELECTRONICS
INC.
THE
HDE DISK SYSTEM.
HERE'S
WHAT
ONE
USER HAS
TO
SAY.
REPRINTED BY PERMISSION FROM
THE
6502
USER
NOTES·
ISSUE NO.
14
• •
ERIC
PRODUCT
REVIEW
of
the HOE DISC SYS-
TEM by
the
editor
A
number
of
you
have
asked
for
details
about
the
HOE
lull
size
disc
system.
The
system
is
based
around
the
SYKES
8"
drive WIth
the
6502
based
Intelligent
control-
ler.
ThiS
drive
is
soft
sectored,
IBM
compatible,
and
single
density
which
lets
you
store
about
a
quarter
megabyte
of
data
on
a
disc.
The
system
software,
called
FaDS
(File Ori-
ented
Disc
System),
manages
sequential
files
on
the
disc
much
the
same
way
files
are
writ-
ten
on
magnetic
tape
-
one
after
another
When
a file
IS
deleted,
from
a
sequentially
managed
file system,
the
space
that
the
IiIe
occupied
is
not
immediately
reallocated,
as
In
some
disc
operating
systems.
As
it
turns
out,
this
can
be
an
advantage
as
well
as
a
disad-
vantage
since
deleted
files
on
the
FaDS
sys-
tem
can
be
recovered
after
the
file
has'been
deieted.
(ThiS
has
saved
my
sanity
more
than
once!)
Of
course
when
you
want
to
recover
some
ot
the
disc
space
taken
up
by
a
number
of
these
deleted
files,
you
can
simply
re-pack
or
compress
the
disc
and
all
the
active
files
will
be
shifted
down
untillhere
are
nodeleted
files
hanging
around
using
up
space.
FOOS
has
this
ability
to
repack
a disc.
Wren
saving
and
loading
In
FaDS
you
work
with
named
Ides,
not
track
and
sector
data
or
1.0. bytes. ThiS
makes
Ille
a
lot
easier. I've
se8n
some
diSC
systems
where
you
have
to
specIfy
track
and
sector
Inlo
and/or
I.
D.
bytes.
Whal a pain that can
be'
If
you
Just
want
to
save
a
source
file
tempor-
anly.
you
can
do
that
on
what's
known
as
"scratch-pads"
There
are
two
of
these
on
a
dISC.
"scratch'
pad A"
and
"scratch·
pad B".
each
01
these
temporary
disc
lilescan
hold
up
to 16 K or
II
"B"
IS
not
used.
"A"
can
hold
one
file
UD
to
32K
In
length.
The
only
files
that
can
be
temporarily
saved
on
scratch
pad
are
files
that
have
been
built
uSing
the
system
text
editor
Being
a
dyed
In
the
wool
assembly
lan-
guage
programmer.
I
really
appreciate
the
FODS
text
editor!
ThiS
line
oriented
editor
IS
upwards
compatible
with
the
MOS/ARESCO
editor
but
includes
about
everything
you
could
ask
for
In a
line
edItor.
There
IS
a fUll
and
semi-automatic
line
numbering
feature.
lines
can
be
edited
while
they
are
being
entered
or
recalled
and
edited
later.
strrngs
can
be
~o
cated
and
substituted.
the
line
numbers
can
be
resequenced.
the
file
size
can
be
found.
the
hex
address
of a
line
can
be
known
and
comments
can
be
appended
to
an
assembly
Itle
after
It
has
been
found
correct.
Oops!
I
forgot
to
say
lines
can
also
be
moved
around
and
deleted.
This isn't
the
complete
list
cf
FaDS
editor
commands,
just
the
ones
that
immediately
come
to
mind.
Another
very
powerful
feature
of
the sys-
tem
is
the
ability
to
actually
execute
a
tile
con-
taining
a
string
of
commands.
For example,
the
newsletter
mailing
list
is
now
being
stored
on
disc.
When
I
want
to
make
labels. I
would
normally
have
to
load
each
letter
file
and
run
the
labels
printing
program.
But
wilh
FaDS.
I
can
bUild
up
a
"JOB"
file
of
commands
and
execute
it.
The
job
file in
turn
calls
each
lettered
label
file
in
and
runs
the
label
printer
automatical-
ly.
The
way
computers
are
supposed
to
oper-
ate
right?
Here's
a
listing
01
the
job
IiIe I
use
to
print
mailing
labels:
'L1S
PRTLBL
0005
LaD
ARUN
""LABELLOD
B:JMP.EOOO:
LaD
CJMP.EOOO:
0010
LaD
D:JMP.EOOO:LOD E:JMP.EOOO:
LaD
FJMP
EOOO:
0015
LaD
GJMP.EOOO:LOD H:JMP.EOOO:
LaD
I:JMPEOOO:
0020
LaD
J:JMPEOOO:LOD
K:JMP
.EOOO·
LaD
L:JMP
EOOO
0025
LaD
M:JMP
EOOO:LOD
MC: JMPEOOO:
LaD
N:JMP.EOOO·
0030
LaD
O:JMP
EOOO:LOD
PJMP
.EOOO:
LaD
R:JMPEOOO
0035
LaD
S:JMPEOOO'LOD
TJMP
EQOO'
LaD
VJMPEOOO
0035
LaD
SJMPEOOOLOD
T
JMP
EGOO
LaD
VJMP.EOOO
0040
LaD
WJMP
EGOO
LaD
XYZ JMPEOOO
0045
LaD
EXCHJMPEOOOLOO
COMP
JMP.EOOO:
Remember
the
MOS/ARESCO
assembler
I
reviewed
several
Issues
ago?
Well
HOE
went
and
fixed
up
all
the
problem
areas
thai
I
mentioned
in
the
review
and
then
look
it
several
sleps
further. The HOE
assembler
IS
an
honest
to
goodness
two-pass
assembler
whIch
can
assemble
anywhere
in
memory
us'
Ing
multiple
source
files
from
the
disc.
The
as-
sembler
is
an
optIonal
part
of
the
system.
If
you're
the
kind
01
person
(as I am)
who
enjoys
having
the
ability
to
Customize.
modi-
fy.
and
expand
everything
you
L,,,n - you'll
enJOY
the
system
expansion
abilities
FOOS
has
to
offer.
Adding
a
new
command
;~
as
simple
as
writing
the
program.
giving
It a
unique
three
letter
name
and
saving
it
to
disc
Whenever
you
type
those
three
letters
the
system
will
first
go
through
its
own
command
table.
see
that
its
not
there
and
then
go
out
and
read the
diSC
directory
to
see;f
It
can
lind
it.
If
it's
on
the
disc
it
will
read
it
In
and
execute
it.
Simple
right? I've
added
sevE~ral
commands
to my system
and
REALLY
apprecIate
haVing
thiS ability.
Some
01
the
things
I've
added
include
a
disassembler,
an
expanded
ver-
sion
of
XIM (the
extended
machine
language
monitorfrom
Pyramid Data),
Hypertape,
and
a
number
of
system
utilities
which
make
life
easIer By
the
way, to
get
back
to the system.
all
you
need
to
do
is
execute
a
BRK
instruc-
tion.
HOE
also
provides
a
piece
of
sol!ware
that
lets
you
Interface
Microsoft
gOlgl1 BASIC to
their
disc
system.
The
software
allows
you
to
load the BASIC
Inlerpreter
itsell
from
disc
as
well as
saving
and
loading
BASIC
Programs
to
and
from
the
disc.
This
particLJlar
version
of
the
software
doesn't
allow
lor
saving
BASIC
data
but
HOE
mentioned
that
tMis
ability
may
be
possible
with
a
future
version
The
first
thing
I
do
With a
new
piece
of
soft-
ware
after
I
get
used
to uSing it
IS
try
to
blow
It
up. I
did
manage
to
find
a
weak
spot
or
two
In
the
very first verSion of
FaDS
[a
pre-release
version)
but
the
later,
release
verSion
has
beAn very
tight
The
standard
soltware
that
IS
Included
with
the
system
conSists
of
the
diSC
driver
soft-
ware,
the
system
text
editor
and
the
BASIC
soflware
interface.
Several
command
exten-
SIons
may
also
be
Included.
All the
necessary
stulf
like
a
power
supply.
the
KIM·4
Interface
card,
and
all
cables
and
connectors
are
In-
cluded.
It
took
me
about
45
minutes
10
get
things
up
and
running
the
first
time
I
put
the
system
together
Admittedly.
a
dual
lull
size
diSC
system
from
HOE
IS
probably
beyond
the
means
01
most
hobbyists
but
if
you
or
your
company
IS
look-
ing
lor
a
dynamlle
6502
development
sys'
rem. I
would
recommend
thiS
one.
I've
used
the
Rockwell
System
65
while
I
was
at
MaS
and
feel
that
dollar
for dollar.
feature
for
feature.
the
HOE
system
comes
out
on
top
The
onJy
place
the
HOE
system
falls
short
when
stacked
up
next
to
the
System
65
IS
In
the
area
of
packaging.
At thiS POint.
there
IS
no
cabmet
for
the
disc
drives
available
from
HOE
So
far.
I've
got
nothing
but
900d
things
to
say
about
HDE
and
their
products
Everything
I've
received
rrom
them
has
been
industrial
quality.
That
Includes
their
documentation
and
oroduct
support.
I·m
very
Irnpressed
wilh
what
I've
seen
Irom
lhls
company
so
far
and
qUite
enthUSiastiC
over
what
my
KIM
has
become
since
acquIring
the
dl:;c
system
and
ItS
assocIated
software
THANK
YOU MR.
REHNKE!
HDE
PRODUCTS -
BUILT
TO
BE
USED
WITH
CONFIDENCE
AVAILABLE
DIRECT
OR FROM
THESE
FINE
DEALERS:
JOHNSON
COMPUTER
Box
523
Medina.
OhiO
44256
216-
725-4560
ARESCO
PO
Box
43
Audubon.
Pa
19407
215·631-9052
PLAINSMAN
MICROSYSTEMS
Box
1712
Auburn.
Ala
36830
80C·633·8724
LONE
STAR
ELECTRONICS
Box
488
Manchaca.
Texas
78652
612-282'3570
PERRY
PERIPHERALS
PO
Box
92"1
Miller
Place.
NY
',76
..
1
516-
7
.1
..
1·6"6.2