User`s guide
vector
ZCB
Single
Board Computer
selecting
the
£X'rt
addresses
desired.
For
standard
use
in
vector
Graphic
Microcomputer
Systems,
the
default
addresses
are
adequate.
For
more
involved
systems,
it
may
be
necessary
to
change
port
addresses.
This
is
accomplished
by
merely
changing
SCIre
jumper
connections
on
the
ZCB
ix>ard.
The
first
thing
to
do
is
to
decide
what
port
addresses
you
wish
to
use.
There
are
eight
groups
of
thirty-two
port
addresses
you
can
choose
frame
All
the
p:>rt
addresses
mus t
be
chosen
from
the
same
group.
They
are
as
follows:
.
Group
I
II
III
IV
V
VI
VII
VIII
I/O
:EUrt
Address Groups
Port
Address(Hex)
Oo-IF
2o-3F
4o-5F
6o-7F
80-9F
Ao-BF
CO-OF
Eo-FF
JUMPER
ARPA
G
9-6,
8-4,
7-2
9-5,
8-4,
7-2
9-6,
8-3,
7-2
9-5,
8-3,
7-2
9-6,
8-4,
7-1
9-5,
8-4,
7-1
9-6,
8-3,
7-1
9-5,
8-3,
7-1
Within
these
groups,
£X'rt
addresses
are
assigned
in
increments
of
four:
Port
Mdress
Increments
wi
thin
Groups
ARPA
GROUP
EPAD
I
II
III
IV
V
VI
VII
VIII
NO.
(all
addresses
expressed
in
hex)
3
00
20
40
60
80
AO
CO
EO
4
04
24
44
64
84
A4
C4
E4
5 08
28
48
68
88
A8
C8
E8
6
OC
2C
4C
6C
8C
AC
CC
EC
7
10
30
50
70
90
BO
00
FO
a 14
34
54 74 94
B4
D4
F4
9 18
38
58
78
98
sa
DB
Fa
10 lC
3C
5C
7C
9C
BC
IX:
FC
1)
To
dlange
£X'rt
addresses,
first
decide
which
group
you
wish
to
use
and
jumper
area
G
as
per
the
I/O
Port
Address
Groups
Chart.
If
you wish
to
chose
an
address
within
Group
I,
jumper
area
G
will
not
have
to
be
changed
unless
the
jumpers
have
been
cut.
If
you
wish
to
choose
an
address
from
Groups
II-VIII,
first
cut
the
standard
jumpers
in
area
G
and
rejumper
as
per
chart
G.
2)
()1ce
the
group
a:ldress
has
been
jumpered,
the
actual
serial
and
parallel
port
addresses
can
be
dlOsen.
If
you want
the
serial
base
address
to
be
X4
and
the
parallel
base
address
to
be
X8
then
you
do
not
need
to
change jumper
area
E
unless
the
jumpers have
been
previously
changed.
To
set
the
address
at
other
than
the
standard,
first
cut
any
pre-existing
jumpers
and
jumper
as
per
the
Port
Address Increm=nts
within
Groups
chart.
To
set
the
serial
£X'rt
addresses
jumper fram Pad 1
to
the
desired
a:ldress
pad.
To
set
the
parallel
£X'rt
base
address
jumper fram pad 2
to
desired
address
pad.
2-8
Rev. I-B
6/11/80