OSBYTE &72

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OSBYTE &72 (114) - Write to Shadow/Main toggle

       X=0 force use of shadow memory on future mode changes
       X=1 only use shadow memory if mode number is > 127
   (Solidisk ROM/RAM Extension)
       X=255 never use shadow memory

See Also

Jgharston 21:51, 26 May 2009 (UTC)