Epson Research and Development
Page 5
Vancouver Design Center
13706BMP Demonstration Program S1D13706
Issue Date: 01/02/23 X31B-B-004-02
Display Surfaces
A display surface is a block of memory assigned to the main window and/or sub-window
of the S1D13706. The sub-window is a feature of the S1D13706 “Picture-In-Picture Plus”
feature. For further information on “Picture-In-Picture Plus”, see the S1D13706 Hardware
Functional Specification, document number X31B-A-001-xx.
13706BMP includes three predefined display surfaces (0-2) which cover the possible
combinations of these windows. Table 1: “Display Surfaces” lists the display surfaces that
may be selected.
When ds=0, bmpfile1.bmp is displayed in the main window. If ds=n is not specified on the
command line, this setting is automatically used when bmpfile2.bmp is not provided. This
should be chosen when a sub-window is not required.
When ds=1, bmpfile1.bmp is displayed in the main window and also in the sub-window.
Note that only a portion of bmpfile1.bmp is displayed if the sub-window is smaller than the
resolution of the bmpfile.
When ds=2, bmpfile1.bmp is displayed in the main window and bmpfile2.bmp is displayed
in the sub-window. This is the most useful combination to demonstrate the “Picture-In-
Picture Plus” feature.
Table 1: Display Surfaces
Display Surface
(ds=)
Window(s) using
Memory Block 0
Window(s) using
Memory Block 1
0 Main Window —
1 Main & Sub-window —
2 Main Window Sub-window
To Next Page
Loading...
