Int 4B/AX=8109h/DX=0000h

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

See Also: AX=810Ah

Category: Disk I/O Enhancements - Int 4Bh - V

Interrups Categories Contents