Sensoray 614 Caption Overlay User Manual
Page 10
RAM Bitmap-Block #16~23, Data:
080 h – 0bf h
RAM Bitmap-Block #24~31, Data:
0c0 h – 0ff h
RAM Bitmap-Block #32~39, Data:
100 h – 13f h
RAM Bitmap-Block #40~47, Data:
140 h – 17f h
RAM Bitmap-Block #48~55, Data:
180 h – 1bf h
RAM Bitmap-Block #56~63, Data:
1c0 h – 1ff h
Then, two windows of caption/overlay attributes will be followed, to determine which bitmap block(s) or character font(s),
with what color and transparent attribute, will be chosen to fill the caption/overlay windows (fields).
RAM Window-1, Attributes:
200 h – 23f h
RAM Window-2, Attributes:
240 h – 27f h
Attribute Formation:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R/W
Transp
Y2
Y1
Y0
U2
U1
U0
V2
V1
V0
BbCh5
BbCh4
BbCh3
BbCh2
BbCh1
BbCh0
DEFAULT
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Transp is for indicating if the caption/overlay is transparent:
0 – transparent,
1 – non transparent, with black background
Y[2:0] is the color index for the Y component of the caption/overlay bitmap-block or character font’s color:
0 – black, 1 – white, 2 – red, 3 – blue, 4 – green, 5 – yellow, 6 – Magenta, 7 – Cyan
U[2:0] is the color index for the U component of the caption/overlay bitmap-block or character font’s color:
0 – black, 1 – white, 2 – red, 3 – blue, 4 – green, 5 – yellow, 6 – Magenta, 7 – Cyan
V[2:0] is the color index for the V component of the caption/overlay bitmap-block or character font’s color:
0 – black, 1 – white, 2 – red, 3 – blue, 4 – green, 5 – yellow, 6 – Magenta, 7 – Cyan
BbCh[5:0] is for choosing which bitmap-block or character font stored in the bitmap-block RAM:
i.e.
BbCh[5:0] = 0:
choose Bitmap-block or Char #0, stored/started at 000 h
BbCh[5:0] = 1:
choose Bitmap-block or Char #1, stored/started at 008 h
:
:
BbCh[5:0] = 62:
choose Bitmap-block or Char #62, stored/started at 1f0 h
BbCh[5:0] = 63:
choose Bitmap-block or Char #63, stored/started at 1f8 h