Sharp MZ-5500 - Page 107

°Monochrome mode
Under the monochrome mode, - different significance is given to 12CH and
12Al1, which requires ~o select normal or reverse for the window .
°12CH
D2 D1 DO
I
I
I
LO:
Wind mol
0
is displayed
normal .
1 : Window
0
is displayed reverse.
0:
Window
1
is displayed
normal.
1 :
Window
1 is
displayed
reverse.
0:
Window
2
is
dis . played
normal.
1 :
Windm<1
2
is displayed reverse.
° 12AH
D2 D1 DO
I I I I
~ 0 : Window 3 is displayed normal.
1: Window 3 is displayed reverse.
~ ____ ---JL Don I t care
oPallet register
l
(LS670)
Colors displayed on the video screen and tones on the green video display
depend on the presets set in the pallet register. As data written in the
video RAM are read to be displayed at the same time from planes 0, 1,
and 2, it may constitute a number 0 to 7, if they are assumed to be three
digits binary number having the plan~ 0 for LSB and plane 2 for MSB, which
is used to be the pallet number. What color be displayed by a pallet
number depends on the color number set in the pallet register which is
discussed next.
\
1/ 0 address
14lH:
Color number for the pallet number
0
l43H:
Color number for the
pallet number
1
145H :
Color
number
for the pallet
number 2
147H:
Color number
for
the pallet number
·3
15lH:
Color
number for
the pallet number
4
153H:
Color number
for the
pallet
number
5
155H:
Color number
for the
pallet number
6
157H:
Color number for
the
pallet number
7
DlO D9 D8
141H - 157H
I
I
I
::.
Color number