Difference between revisions of "OSBYTE &49"

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[[Category:OSBYTE]]
 
[[Category:OSBYTE]]
OSBYTE &49 (73) - Integra-B calls
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{{PageTitle|OSBYTE &49 (73) - Integra-B calls}}
 
 
 
     On entry:
 
     On entry:
 
       X=&FF - returns X=&49 indicating Integra-B is present
 
       X=&FF - returns X=&49 indicating Integra-B is present
 
       X<&FF - other calls
 
       X<&FF - other calls
 +
    On exit:
 +
      X=&49 - called with X=&FF and Integra-B is present
 +
      X=&FF - call unsupported
 +
 +
==See Also==
 +
* [[OSBYTE &49]] - Check for Integra-B shadow memory
 +
* [[OSBYTE &6C]] - Select Master/Integra-B shadow memory
 +
* [[OSBYTE &6F]] - Select Aries/Watford shadow memory
 +
* [[OSBYTE &70]] - Select memory for Master VDU access
 +
* [[OSBYTE &71]] - Select memory for Master video display
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* [[OSBYTE &72]] - Select future use of shadow memory
 +
* [[OSBYTE &73]] - Select shadow bank
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* [[OSBYTE &74]] - Check for Solidisk shadow memory
 +
* [[Paging in video memory]]
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* http://mdfs.net/Docs/Comp/BBC/Osbyte00
  
 +
----
 
[[User:Jgharston|Jgharston]] ([[User talk:Jgharston|talk]]) 20:29, 3 April 2015 (UTC)
 
[[User:Jgharston|Jgharston]] ([[User talk:Jgharston|talk]]) 20:29, 3 April 2015 (UTC)

Latest revision as of 20:50, 21 January 2021

OSBYTE &49 (73) - Integra-B calls
   On entry:
     X=&FF - returns X=&49 indicating Integra-B is present
     X<&FF - other calls
   On exit:
     X=&49 - called with X=&FF and Integra-B is present
     X=&FF - call unsupported

See Also


Jgharston (talk) 20:29, 3 April 2015 (UTC)