VflatD_Create_Physical_Frame_Buffer

include vflatd.inc

mov   dl, VflatD_Create_Physical_Frame_Buffer  ; Function number
mov   dh, Flags                         ; Must be zero
mov   eax, FrameBufBase                 ; Physical base of frame buffer
mov   ecx, FrameBufSize                 ; Size of frame buffer, in bytes
call  VFlatDApiProcAdr
jc    errorhandler
mov   VideoSelector, ax
mov    VideoAddress, edx
 

Retrieves a GDT selector to a flat video buffer. Uses Flags.

• Returns a selector for the logical frame buffer in AX, returns a linear address for that frame buffer in EDX, and clears the carry flag if successful; otherwise, sets the carry flag.

Flags

Options flags. Currently, no flags are defined; this parameter must be zero.

FrameBufBase

Physical base of frame buffer. The physical base is the address of the frame buffer in physical memory.

FrameBufSize

Size of frame buffer, in bytes.