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Int 4B Fn 810A - Virtual Dma Specification - Copy Out Of Dma Buffer [d]
AX = 810Ah
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=8109h
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