OSBYTE &72

OSBYTE &72 (114) - Specify video memory to use on next MODE change

       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

This OSBYTE is called by the *SHADOW command on the BBC B+ and Master.

See Also

• OSBYTE &6C - Select Master shadow memory
• OSBYTE &6F - Select BBC B shadow memory
• OSBYTE &70 - Select memory for Master VDU access
• OSBYTE &71 - Select memory for Master video display
• OSBYTE &72 - Select future use of shadow memory
• OSBYTE &73 - Select shadow bank
• OSBYTE &74 - Check for Solidisk shadow memory
• Paging in video memory
• http://mdfs.net/Docs/Comp/BBC/Osbyte00

WikiSysop (talk) 13:34, 8 March 2015 (UTC)