
MYSON
TECHNOLOGY
MTV016
MTV016 Revision 2.0 01/01/1999
7/11
(ii) Row Control Registers
b7
R1
b6
G1
b5
B1
b4
R2
b3
G2
b2
B2
b1
CHS
b0
COLN 28
CWS
b7 - 2 Color 1 is defined by R1, G1, B1 and color 2 by R2, G2, B2.
b1 CHS - Defines double height character to the respective row.
b0 CWS - Defines double width character to the respective row.
b7
R3
b6
G3
b5
B3
b4
R4
b3
G4
b2
B4
b1
-
b0
-
COLN 29
b7 - 2 Color 3 is defined by R3, G3, B3 and color 4 by R4, G4, B4.
b7
b6
COLN 30
R5
G5
b7 - 2 Color 5 and color 6 are defined by R5, G5, B5 and R6, G6, B6, respectively. When a window is
overlapping with the character and the corresponding CCS2 is set to "1", color 5, color 6, color 7 and
color 8 should be chosen.
b5
B5
b4
R6
b3
G6
b2
B6
b1
-
b0
-
b7
R7
b6
G7
b5
B7
b4
R8
b3
G8
b2
B8
b1
-
b0
-
COLN 31
b7 - 2 Color 7 is defined by R7, G7, B7 and color 8 by R8, G8, B8.
3.7 Character ROM
The character ROM contains 128 built-in characters and symbols from address 0 to 127. Each character
and symbol consists of a 12x18-dot matrix. The detailed pattern structures for each character and
symbol are shown in
Section 10.0
.
3.8 Luminance & Border Generator
There are 2 shift registers included in the design that can shift out of luminance and border dots to the
color encoder. The bordering and shadowing feature is configured in this block. For a bordering effect,
the character will be enveloped with blackedge on 4 sides. For a shadowing effect, the character is
enveloped with blackedge on the right and bottom sides only.
3.9 Window and Frame Control
The display frame position is completely controlled by the contents of VERTD and HORD. The window
size and position control are specified in columns 0 to 11 on row 10 of the memory map, as shown in
Figure 5. Window 1 has the highest priority and window 4 the least, when 2 windows are overlapping.
More detailed information is described as follows:
(i) Window Control Registers
ROW 10
b7
b6
b5
b4
b3
b2
b1
b0
Column
0,3,6OR 9
MSB
ROW START ADDR
LSB
MSB
ROW END ADDR
LSB