Toshiba H1 Series Data Book page 556

3.19.5 Special Functions
3.19.5.1 PIP (Picture in Picture) Function
The TMP92CZ26A includes a PIP (Picture in Picture) function that allows a different
screen to be displayed over the screen currently being displayed on the LCD.
The PIP function manages the address space of display memory by dividing it into
"main screen" and "sub screen". For the main screen, the display size and start address
are specified as in the case of the normal screen display. For the sub screen, the display
size and start address are also specified for determining the position and size of the sub
screen.
When the HOT point (upper-left corner) and segment/common size are set for the sub
screen and the PIP function is enabled by setting LCDCTL0 <PIPE> to "1", the sub
screen is displayed over the main screen.
LCD Panel (PIP OFF)
Main Area
Start Address
Sub Area
Start Address
HOT Point
VRAM Memory Map
92CZ26A-553
TMP92CZ26A
LCD Panel (PIP ON)
Note: This is just an image of
memory map and doesn't describe
the image of bit map.