Specifications

174 AMD Geode™ GeodeROM Functional Specification
Video BIOS Support
32087C
13.1.17.3 Subfunction 02h: Set All Palette and Overscan Registers
Description:
Sets the palette to the values pointed to by ES:DX. The first 16 bytes in the buffer are the palette and the last byte is
the overscan value.
Passed:
Returns:
None.
13.1.17.4 Subfunction 03h: Toggle Intensity/Blinking Bit
Description:
Changes the meaning of bit 7 of the attribute for text modes. By default, bit 7 of text attributes signals blinking. How-
ever, this can be changed so that the background color in the attribute byte can be expanded to 16 colors instead of the
default 8 + blinking.
Passed:
Returns:
None.
13.1.17.5 Subfunction 07h: Read Individual Palette Register
Description:
Returns the current value of a given single internal palette register.
Passed:
Returns:
Parameter Description
AH 10h
AL 02h
ES:DX Pointer to 17 byte table:
Byte 16 = Overscan
Bytes[15:0] = Palette
Parameter Description
AH 10h
AL 03h
BL Blinking Flag:
0 = Intensity
1 = Blinking
Parameter Description
AH 10h
AL 07h
BL Register to read
Parameter Description
BH Value read