Difference between revisions of "OSBYTE &17"
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OSBYTE &17 (23) - Decrement Polling Semaphore | OSBYTE &17 (23) - Decrement Polling Semaphore | ||
| − | This call decrements a counter, which when zero will stop the | + | This call decrements a counter, which when zero will stop the (type &15) |
| − | + | polling calls from being sent to ROMs at 100Hz. | |
| − | + | On exit: | |
| + | X=preserved - Polling semaphore exists | ||
| + | X=&FF - Polling semaphore not implemented | ||
| − | * [[ | + | ==See Also== |
| − | + | * [[OSBYTE &16]] - Increment Polling Semaphore | |
| − | * | + | * http://mdfs.net/Docs/Comp/BBC/Osbyte00 |
| − | |||
| − | [[User:Jgharston|Jgharston]] 21: | + | [[User:Jgharston|Jgharston]] 21:32, 26 May 2009 (UTC) |
| + | [[User:Jgharston|Jgharston]] ([[User talk:Jgharston|talk]]) 02:04, 6 November 2020 (CET) | ||
Latest revision as of 02:04, 6 November 2020
OSBYTE &17 (23) - Decrement Polling Semaphore
This call decrements a counter, which when zero will stop the (type &15)
polling calls from being sent to ROMs at 100Hz.
On exit:
X=preserved - Polling semaphore exists
X=&FF - Polling semaphore not implemented
See Also
- OSBYTE &16 - Increment Polling Semaphore
- http://mdfs.net/Docs/Comp/BBC/Osbyte00
Jgharston 21:32, 26 May 2009 (UTC) Jgharston (talk) 02:04, 6 November 2020 (CET)
