INT 4B - Virtual DMA Specification - COPY INTO DMA BUFFER AX = 8109h DX = 0000h ES:DI -> DMA descriptor structure (see #03221,#03222) 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 #03218) BUG: Windows 3.0 Enhanced mode does not correctly interpret the copy count SeeAlso: AX=810Ah