Difference between revisions of "OSBYTE &16"

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OSBYTE &16 (22) - Increment Polling Semaphore
 
OSBYTE &16 (22) - Increment Polling Semaphore
  
     This call increments a counter, which if non-zero will cause a 100Hz
+
     This call increments a counter, which if non zero will cause 100 service
     service call (type &15) to be sent the paged ROMs. This allows a way
+
     calls (type &15) per second to be sent the paged ROMs. This allows a way  
 
     for ROMs to poll hardware which doesn't offer interrupts.
 
     for ROMs to poll hardware which doesn't offer interrupts.
   
 
    Implemented on Electron and MOS 3 onwards
 
  
 
==See Also==
 
==See Also==
* [[OSBYTE &17|OSBYTE &17]] - Decrement ROM polling semaphore
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* http://mdfs.net/Docs/Comp/BBC/Osbyte00
* [[OSBYTE &B3|OSBYTE &B3]] - Master ROM polling semaphore location
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* [[OSBYTE &B3|OSBYTE &B9]] - Electron ROM polling semaphore location
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* [[Paged ROM service calls]]
+
  
 
[[User:Jgharston|Jgharston]] 21:31, 26 May 2009 (UTC)
 
[[User:Jgharston|Jgharston]] 21:31, 26 May 2009 (UTC)

Latest revision as of 20:12, 8 March 2015

OSBYTE &16 (22) - Increment Polling Semaphore

   This call increments a counter, which if non zero will cause 100 service
   calls (type &15) per second to be sent the paged ROMs. This allows a way 
   for ROMs to poll hardware which doesn't offer interrupts.

See Also

Jgharston 21:31, 26 May 2009 (UTC)