Sensoray 614 Caption Overlay - Manual (Page 13)

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 800 h
BbCh[5:0] = 1: choose Bitmap-block or Char #1, stored/started at 808 h
: :
BbCh[5:0] = 62: choose Bitmap-block or Char #62, stored/started at 9f0 h
BbCh[5:0] = 63: choose Bitmap-block or Char #63, stored/started at 9f8 h
For Window-7 and Window-8:
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: c00 h – c3f h
RAM Bitmap-Block #8~15, Data: c40 h – c7f h
RAM Bitmap-Block #16~23, Data: c80 h – cbf h
RAM Bitmap-Block #24~31, Data: cc0 h – cff h
RAM Bitmap-Block #32~39, Data: d00 h – d3f h
RAM Bitmap-Block #40~47, Data: d40 h – d7f h
RAM Bitmap-Block #48~55, Data: d80 h – dbf h
RAM Bitmap-Block #56~63, Data: dc0 h – dff 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).