Service manual
MZ-800
4-2-8. Pallet
•
As
there are
four
4-bit
pallet registers
provided
inside
the unit,
it
permits
choice
of
R,
G,
B,
and I
combina-
tions, and
it
enables
to
make
choice
of
any
desired
two
or
four
colors
out
of
sixteen available colors.
However, in the
320 x 200, 16-color
mode,
choice
of
colors
permitted
to
four
kinds
of
colors
output
of
sixteen.
•
Only
the
conventional
mode
is applicable
MZ-700
mode
without
using pallet.
for
the
• Pallet is
not
applicable
for
the
border
color.
<Configuration>
Pallet
enable
SWitch
PLTO
PLTl
PLT2
PLT3
DB;
SW;
Bo
B,
B,
B,
~I~~:;PUI
--0
:
B
output
DB,
0
Ro
R,
R, R,
~
SW,
~
~
~~~~;~ut
---0
~
R
output
f
~
DB,
G;
G,
G,
G,
3
01
0
Plane III
~
G
output
SA
output
--0
I
DB,
I
Plane
1\-
"-l.o-
I
output
SA
output
--0
:
So
S,
Inpu!
select
Signal
A
B
Output
select
Signal
320
)(
200,
SWQ, 1
Plane
III
1\
SR
output
<Pallet
output
and
display
mode>
•
Shown
next
is the relation
of
the
display
mode,
color
plane data vs
R,
G,
G,
I
outputs.
Display
mode
4
color
320
x
200
16 colors
Pallet output select
Display
color
A B
Frame A 4
colors
out of Plane I Plane n
16
colors
data data
Frame B
4
colors
out
of Plane
ID
Plane
IV
16
colors
data data
(Ex.)
16
colors out
of
16
colors
Plane I
data
Plane
IT
data
<Pallet
register
write>
(FO
H
)
(FO
H
)
MSB
OUT
FO
H
I x
S2
1)
So
-
S2:
Register section
S2
S,
So
0 0
0
0 0
1
-~-
---
-.
0
,
0
0
,
1
1
0 0
2) Bi,
Ri,
Gi,
li:
Pallet
write
data
3)
SW
o
,
SW,:
LSB
Register No.
.-
PLT
0
--
PLT'
--
PLT 2
PLT 3
SW
o
• SW,
With
these switches,
it
is possible
to
make combina-
tion
of
Planes
ill
and N data in
the
320 x 200,
16-color
mode.
Switches
are used to assign pallets
to
four
groups
of
colors.
(Plane
ill
data) =
SW
o
,
(Plane N data) = SW,
Only
for
the
color
information,
the
color
information
set
by
the
pallet register are available
as
B,
R,
G,
and
I outputs. For
color
information
other
than that, data
in
Plane I
through
Plane N are sent
out
as
the
B,
R,
G,
and I
outputs.
(See
example
next.)
Pallet enable
SW
o
•
SW,
x
x
Output select
A B
Output Output Output Output
o
o
Bo
10
o
B,
R,
G,
I,
o
1
B3
o
o
Bo
I
Go
10
o 1
B2
R2
G
2
12
f----+-----+---4-----
-----+-----1
1 1
B3
R3
G
3
13
(PI
ill
)
0 0
Bo
Ro
Go
10
SW
=
ane
_+
__
----1
o
data
( )
~
I
~_~-~-ti-:-:-+--:-:-~-~-'~--::~
I
SW
= Plane
IV
2
! '
data
I ! 1 I 1
B3
R3
G
3
I
13
~---------+--x-4-X-~-I--~-IT-+--ID---+-IV~
I x I
0_
x
Bo
Ro
Go
10
Frame A 2
colors
out of Plane I x I
r---
~---~-1-6-co-l-or-s~-+_-d-a-t-a-+_---+I'~--------~~-_+-B-,_~-R-,_4-G-,-+--I-,~
I x I
O~i-x~--B-o_+-R-o-+_-G-o~~-lo~
2
colors
2
colors
out of Plane
ID
16
colors
data
Frame B
x
I
1I
I,
x
B,
R,
G,
I,
640
x
200
~-----4------+--------+--~-~-------+i------------+----~---+--~-~-------~----~
I 0 0 I
Bo
Ro
Go
4
colors
out
of Plane I
-
16
colors
data
4 colors
Plane
ID
data
25
10
1 0 I
B,
R,
G-,-+--I-,---I
x
! 1