Specifications

AMD Geode™ GeodeROM Functional Specification 163

Video BIOS Support 32087C

13.0Video BIOS Support

GeodeROM’s supports the INT 10h video BIOS functions listed in Table 13-1 and VESA BIOS Extension in Section 13.2 on

page 192.

Table 13-1. INT 10h Video BIOS Functions

Function Subfunction Page Number

Function 00h - Set Video Mode 165

Function 01h - Set Cursor Type 166

Function 02h - Set Cursor Position 166

Function 03h - Get Cursor Position 167

Function 04h - Read Light Pen 167

Function 05h - Set Active Display Page 168

Function 06h - Scroll Up 168

Function 07h - Scroll Down 169

Function 08h - Read Character and Attribute 169

Function 09h - Write Character and Attribute 170

Function 0Ah - Write Character 170

Function 0Bh - Set CGA Palette 171

Function 0Ch - Write Dot 171

Function 0Dh - Read Dot 172

Function 0Eh - Write TTY 172

Function 0Fh - Get Mode 173

Function 10h - Palette Handler 173

Subfunction 00h: Set Individual Palette Register 173

Subfunction 01h: Set Overscan Register 173

Subfunction 02h: Set All Palette and Overscan Registers 174

Subfunction 03h: Toggle Intensity/Blinking Bit 174

Subfunction 07h: Read Individual Palette Register 174

Subfunction 08h: Read Overscan Register 175

Subfunction 09h: Read All Palette and Overscan Registers 175

Subfunction 10h: Read Individual RAMDAC Register 175

Subfunction 12h: Set Block of RAMDAC Registers 176

Subfunction 13h: Select Color Page 176

Subfunction 15h: Get Individual RAMDAC Register 176

Subfunction 17h: Get Block of RAMDAC Registers 177