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AX = 5F5Ch BL = type of vertical compensation to use 00h no compensation 01h automatic centering 02h set centering register DX = centering value (bits 9-0 only) 03h non-automatic centering 04h set vertical line insertion register DL = vertical line insertion (bits 3-0 only) 05h set alternate maximum scanline register DL = alternate maximum scanline (bits 4-0 only) 06h enable text stretching, type 0 07h enable text stretching, type 1 08h enable text stretching, type 2 09h enable text stretching, type 3 0Ah disable text stretching 0Bh set vertical line replication register DL = vertical line replication (bits 3-0 only) 0Ch enable graphics stretching, type 0 0Dh enable graphics stretching, type 1 0Eh disable vertical graphics stretching 0Fh disable all horizontal and vertical compensation 10h enable optimal compensation 11h disable optimal compensation
Return:
AL = 5Fh if function supported AH = status 00h unsuccessful 01h successful
See Also: AX=5F50h - AX=5F5Eh - AX=5F5Fh
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