## Physical Device Driver Reference

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### SCR_ABIOSPASSTHRU (74h) - Remarks

This function is supported by the physical screen device driver. The parameter packet is copied to a 64-byte work area that is used as an ABIOS request block. The LID and UNIT fields are overwritten with the Logical ID of the ABIOS video device opened by SCREEN$ and 0, respectively. This request block is used with the DevHlp_ABIOSCall and the resulting request block is copied back to the caller's Parameter Packet.