Int 33/AX=0008h

AX = 0008h
CX = minimum row
DX = maximum row

Note: In text modes, the minimum and maximum rows are truncated to the next lower multiple of the cell size, typically 8x8 pixels

See Also: AX=0007h - AX=0010h - AX=0031h - INT 62/AX=0080

See Also: INT 6F/AH=0Eh"F_SET_LIMITS_Y"