Int 4B/AX=8108h

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Virtual DMA Specification - RELEASE DMA BUFFFER

AX = 8108h
DX = flags

bit 0:
Reserved (zero)

bit 1:
Data should be copied out of buffer bits 2-15 reserved (zero). ES:DI -> DMA descriptor structure (see #03221,#03222) with buffer ID set (also region size/region offset/segment if DX bit 1 set)

Return:
CF clear if successful CF set on error AL = error code (see #03218)

BUG: Under Windows 3.0 Enhanced mode, you must specify that data be copied for this function to work correctly

See Also: AX=8107h

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

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