Difference between revisions of "OSBYTE &72"

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m (Added Integra-B info.)
m (Added return value.)
 
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     Solidisk ROM/RAM Extension:
 
     Solidisk ROM/RAM Extension:
 
         X=255 never use shadow memory even if MODE > 127
 
         X=255 never use shadow memory even if MODE > 127
 +
    On exit:
 +
        X=previous setting
  
 
This OSBYTE is called by the '''*SHADOW''' command.
 
This OSBYTE is called by the '''*SHADOW''' command.
  
==See Also==
+
==See also==
 
* [[OSBYTE &49]] - Check for Integra-B shadow memory
 
* [[OSBYTE &49]] - Check for Integra-B shadow memory
 
* [[OSBYTE &6C]] - Select Master/Integra-B shadow memory
 
* [[OSBYTE &6C]] - Select Master/Integra-B shadow memory
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* http://mdfs.net/Docs/Comp/BBC/Osbyte00
 
* http://mdfs.net/Docs/Comp/BBC/Osbyte00
  
[[User:Jgharston|Jgharston]] ([[User talk:Jgharston|talk]]) 20:31, 3 April 2015 (UTC)
+
[[User:Jgharston|Jgharston]] ([[User talk:Jgharston|talk]]) 01:13, 4 April 2015 (UTC)

Latest revision as of 03:13, 4 April 2015

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

   On entry:
       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 even if MODE > 127
   On exit:
       X=previous setting

This OSBYTE is called by the *SHADOW command.

See also

Jgharston (talk) 01:13, 4 April 2015 (UTC)