Screen Display Position Control - Fujitsu MB91319 Series Hardware Manual

18.2.4

Screen Display Position Control

The OSDC can control the display positions on the main screen, CC screen, screen
background characters, screen background colors, and sprite characters independently.
■ Display Position Control on the Main/CC Screen
The MB91319 controls the display start positions of a character (or a line of characters),
character trimming, character background, and line background simultaneously.
❍ Vertical display position: Vertical display position control (command 5-2), Bits Y8 to Y0
Set the vertical display start position relative to the VSYNC position.
The position can be set between 0 and 2046 dots in 2-dot units.
❍ Horizontal display position: Horizontal display position control (command 5-3), Bits X8 to
X0
Set the vertical display start position relative to the HSYNC position.
The position can be set between 0 and 1532 dots in 4-dot units.
❍ Line spacing: Line control data set 1 (command 3), Bits LW2 to LW0
Set the number of dots to specify the width of the areas to be kept above and below the
characters on each line.
The spacing specified by the set value will be kept both above and below the characters.
The line spacing can be set between 0 and 14 dots in 2-dot units for each line.
(Note: When line double-height display is on, the line spacing is doubled as well.)
Figure 18.2-4 shows the display positions on the main/CC screen.
CHAPTER 18 OSDC
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