Sharp MZ-5500 - Page 105

Data
in
Data
in
nnta in
VDS 0
VDS J
Color circuit
VDS2
plane
plane
plane
0
Plane
pr-Iority
Se.leeto
r
1 _ __
Back.srou nd
color
OlÄ-t P4t
2
Bonler- c.olor
Normal
Reverse
Select signal (DO of 120B)
Monochrome c
ircuit
Fig.15-10 VDC inte~nal
°Plane priority register (1/0 address 122H)
Only when D2 of the 1/0 address 120H is 1, the display data are converted
as in Table 15-5 by the value given to 122H.
Tabl~ 15-5
~
i22H
Befo
change
After change
j
0
1
2
3
4 'V '7
0:0 0
o ,0
0
O!O
0
0;0
0
0:0
0
0:0
0
0;0 1
o :0
1
0:0
1
0:0
1
0:0
1
0'0
1
0,1
0
o 11
0
Oll
0
0' 1 0
01
1 0
0' 1
0
0,1
1 o : 1 1
Oll
1 011
1
0: 1
1
0
'
1
1
1 : 0
0
0:0
0
110
0
1 1
0
0
1:0
0
11
0 0
l' 0
1
0:0
1 0'0
1
1
'0 0
1,0
0
1; 0
0
1 ; 1
0
0: 1
0
O~ 1
0
0: 1
0
110
0
110
0
1 : 1
1
0: 1
1
0:1
1 0' 1
1
011
1
110
0
Plane
~ 1l t Plane 0
Plane 1
data,
Priori
plane 1, and plane O.
ty order is given for
The
four
data of plane
kinds of data
2 would
composed of
not
the plane 2
be obtained if
o was set when there is a data in the plane 2, as it is lower in its
priority order than the four kinds of data composed of plane 1 and
plane O.
As the value is increased, it makes the plane 2 priority changed hjgher.
Givjng the ' value of 4 - 7 will make it higher in its priority than any of
four kind data composed of the plane 1 and plane 0, so that data of
plane land plane 0 are not obtained.
ID2