ST92196A datasheet(138/268 Pages) STMICROELECTRONICS

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- ON SCREEN DISPLAY CONTROLLER (OSD)

OSD CONTROLLER (Cont’d)

8.5.7.1 Mouse Coding Data

Address in Segment 22h: 08h (Bits 15:8), 09h (Bits 7:0)

Bit 15 = MPFE

Mouse Pointer Fringe Enable bit

This bit is used to enable or disable the fringe on

the mouse pointer.

0: No fringe.

1: The fringe is activated.

Bit 14 = MPRE

Mouse Pointer Rounding Enable

bit

This bit is used to enable or disable the rounding

on the mouse pointer.

0: No rounding.

1: The rounding is activated.

Bit 13 = MFC4

Mouse Foreground Palette

This bit determines which palette is used for the

mouse pointer color (independently of the setting

of the PASW bit in the OSDDR register).

0: The basic foreground palette is used (address

range in OSDRAM: 10h - 2Fh)

1: The extended foreground palette is used (ad-

dress range in OSDRAM: 50h - 6Fh)

Bits 12:9 = MFC[3:0]

Mouse Foreground Color

code

These bits determine the foreground color of the

mouse pointer.

The MFC[3:0] value points to one of the 16 prede-

fined entries of the foreground palette.

For example, MFC[3:0] = 0 points to 10h & 11h if

MFC4 = 0 (basic foreground palette), and points to

50h & 51h if MFC4 = 1 (extended foreground pal-

ette).

Bit 8 = MPF8

Mouse Pointer Character code

Extension

This bit selects or deselects the character code ex-

tension.

0: Character code extension disabled. The ad-

dressed character number range is 0 - 255.

1: Character code extension enabled. The ad-

dressed character number range is 256 - 383.

Bits 7:0 = MPF[7:0]

Mouse Pointer Character

code

This bit selects a character in the character font.

The character is displayed in 18x26.

If MPF8 = 0, the MFP[7:0] value range is 0 - 255.

If MPF8 = 1, the MFP[7:0] value range is 0 - 127.

MPFE MPRE

MFC4

MFC3

MFC2

MFC1

MFC0 MPF8 MPF7

MPF6

MPF5

MPF4

MPF3

MPF2

MPF1 MPF0

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