Sensoray 614 Caption Overlay - Manual (Page 11)

For Window-3 and Window-4:
Each Bitmap-Block is composed of 16-bit/word x 8 words, which holds 8 pixels x 16 lines of one bitmap-block data
or one character font (8 pixels x 16 lines, if in text mode).
RAM Bitmap-Block #0~7, Data: 400 h – 43f h
RAM Bitmap-Block #8~15, Data: 440 h – 47f h
RAM Bitmap-Block #16~23, Data: 480 h – 4bf h
RAM Bitmap-Block #24~31, Data: 4c0 h – 4ff h
RAM Bitmap-Block #32~39, Data: 500 h – 53f h
RAM Bitmap-Block #40~47, Data: 540 h – 57f h
RAM Bitmap-Block #48~55, Data: 580 h – 5bf h
RAM Bitmap-Block #56~63, Data: 5c0 h – 5ff 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-3, Attributes: 600 h – 63f h
RAM Window-4, Attributes: 640 h – 67f 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