Pallet - Sharp mz-800 Technical Reference And User's Manual

4-8 Pallet
• As there are four 4-bit pallet registers provided inside
the unit, it permits choice of R, G, 8, 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 for the
MZ-700 mode without using pallet.
• Pallet is not applicable for the border color.
<Configuration>
DB,
DB,
DB,
DB,
So
-s,
Pallet
enable
Input select s<gnal
r---
Pallet reg<ster ~
PLT 0 PLT 1 PLT 2 PLT 3
..
..
a,
a,
R, R, R,
R,
Go
G,
G, G,
~~~~:put
--o ]
B output
0
ll
I
~
~~~~:~ut
--o \
R output
Q
I
0
Plane Ul
~
G output
SR
output
---o
1
I
Plane 1\
~
I output
SR output
-..o :
A
B
Output select s1gnal J2Q
X
2QQ,
SWO.l Plane 111.1\
SR output
<Pallet output and display mode>
• Shown next is the relation of the display mode, col or
plane data vs R, G, G, I outputs.
Pallet output select
Display mode
Display color
A
8
4 colors out of Plane I
Plane II
Frame A
16
colors data data
4 color
4 colors out of Plane
m
Plane IV
Frame 8
16
colors data data
320
X
200
(Ex.)
16
colors
-
16
colors out of
Plane I
Plane II
16
colors
data data
2 colors- out of Plane I
Frame A
16
colars data
X
2 colors
2 colors out of Plane
m
Frame 8
16 colors
data
X
640
X
200
4 colors out of Plane I Plane
m
4 colors
-
16 colors data data
<Pallet register write> (FOH)
(FOH)
MSB
LSB
OUT FOH [
X G,
I~ l~li=0-3
. sw,_ sw._ ·
1) So - S
2 :
Register section
52
s,
So
Register No.
0
0 0
PLTO
0 0
1
PLT
1
0 t
0
PLT
2
0 1
1
PLT
3
1 0 0
sw •. sw,
2) 8i, Ri, Gi, li: Pallet write data
3) SW
0 ,
SW,:
22
With these switches, it is possible to make combina-
tion of Planes
m
and N data in the 320
X
200,
16-color mode. Switches are used to assign pallets to
four groups of colors.
(Plane
m
data)
=
SW
0 ,
(Plane N data)
=
SW,
Only for the color information, the color information
set by the pallet register are available as 8, R, G, and
I outputs. For color information other than that, data
in Plane I through Plane N are sent out as the 8, R,
G, and I outputs.
(See example next.)
Pallet enable
Output select
SWo. SW,
Output Output Output Output
A 8
0 0
8o Ro Go lo
1 0 8, R,
G,
I,
X
0
1 82 R2 G2 12
1 1
83 R3 G3
_13
0 0
8o Ro Go lo
1 0 8, R,
G,
I,
X
0 1
82 R2 G2 12
1
1
83 R3 G3 13
SW
=
(Plane m
l
0 0
8o Ro Go lo
0
data
1 0
8, R, G, I,
0
1 82 R2 G2 12
SW
=
(Plane
IV
l
1
data
1 1
83
R3 G3
h
X X
I II
m
IV
0
X
8o
Ro Go lo
X
1
X
8, R, G, I,
0
X
8o Ro
Go lo
X
1
X
8,
R, G, I,
0 0
8o Ro Go
lo
1 0 8,
R, G, I,
X
0 1
82 R2
G2 12
I
1 1
83 R3
G3 13