Signal System Of Color V-Ram - Sharp MZ-700 Series Owner's Manual

4.4 Signal System of Color V-RAM
Color information of the MZ-700 is controlled in character units; that is, a 1-byte color information
table is assigned to each character displayed on the screen.
A color information table is shown in the figure below.
D ;
De
DE
D <
D :
ds
D -
Dc
Not used.
C H A R A C T E R
R
B
Not used.
BACK
R
B
G : Green
R : Red
B : Blue
Color information tables are accessed as follows.
C H A R A C T E R B A C K
SOOO
S 7 F F
S D O O O
$ D 7 F F
8-bit shift register
C. G
Alphanumerics
V - R A M
S D 8 0 0
S D F F F
Color
matrix
Sync
signal"
Blanking-
signal
D 6 - D 4
D 2 - D O
C O L O R
V - R A M
-o o
o o
- R . G . B .
- V I D E O
- R F
Color subcarrier (3.54MHz)
Display address
Display address
Characters displayed are stored at addresses SDOOO to SD7FF of V-RAM, and color information tables
are stored at addresses SD800 to SDFFF of V-RAM.
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