From BeebWiki
Jump to: navigation, search

OSBYTE &01 (1) - Write and Read User Flag/Exit status (exits with X=old value)

   On entry X=value to write
   On exit X=old value
   This flag is unused by the OS, and is simply there to provide an
   OSByte location without the user needing to write OSByte
   decoding code

See Also

Jgharston 21:05, 26 May 2009 (UTC)