OSBYTE &75

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OSBYTE &75 (117) - Read VDU Status Byte

   X=b0 Print output enabled by VDU2
     b1 Unused
     b2 Paged scrolling selected by VDU14
     b3 Text window in force ie.software scrolling
     b4 In a shadow mode
     b5 In VDU5 mode
     b6 Cursor editing in progress
     b7 Screen disabled with VDU21
   (Acorn MOS 1.20)
     b1 Scrolling disabled

See Also

http://mdfs.net/Docs/Comp/BBC/Osbyte00

Jgharston 21:53, 26 May 2009 (UTC)

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OSBYTE