Int 4B Fn 8109  - Virtual Dma Specification - Copy Into Dma Buffer         [d]

   AX = 8109h
   DX = 0000h
   ES:DI -> DMA descriptor structure (see AX=8102h) with buffer ID,
       region segment/offset, and region size fields set
   BX:CX = starting offset into DMA buffer

Return: CF clear if successful
   CF set on error
       AL = error code (see AX=8102h)
BUG:   Windows 3.0 Enhanced mode does not correctly interpret the copy count

See Also: AX=810Ah