Hitachi H8S/2199 Hardware Manual page 855

Bit 10    Reserved: Cannot be modified and is always read as 0. When 1 is written to this bit,
correct operation is not guaranteed.
Bit 9    Border Specification Bit (EDGE): Sets the border for characters for the entire screen.
Bit 9
EDGE
Description
0 No character border
1 Character border
Bit 8    Border Color Specification Bit (EDGC): Selects the border color. Border color
specifications for C.Video output are invalid in superimposed mode.
Border brightness levels are 0 IRE for black and 90 IRE for white.
Note: Brightness levels are with reference to the pedestal level (5IRE). Brightness levels are
reference values.
• Border Color in Text Display Mode
Bit 8 Border Color
EDGC C.Video Output
0 Black
1 White
• Border Color in Superimposed Mode
Bit 8 Border Color
EDGC C.Video Output
0 Specification invalid (black)
1
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R, G, B Outputs
Black
White
R, G, B Outputs
Black
White
(Initial value)
(Initial value)
(Initial value)