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09 April 2024, 18:47
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#1 |
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Zone Friend
Join Date: May 2006
Location: France
Posts: 1,801
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Error in HowToCode?
The part about interrupt said :
moveq.l #INTB_VERTB,d0 ; INTB_COPER for copper interrupt But still is vertical blank like above right? https://jvaltane.kapsi.fi/amiga/howt...nterrupts.html |
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09 April 2024, 18:53
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#2 | |
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Registered User
Join Date: Feb 2017
Location: Denmark
Posts: 1,105
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Quote:
It's just saying "If you want to install a copper interrupt routine instead, change INTB_VERTB to INTB_COPER here". So yes, it is installing a vblank handler. |
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09 April 2024, 20:03
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#3 |
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Registered User
Join Date: Jun 2016
Location: europe
Posts: 1,039
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If you use INTB_COPER you will have to manually set the corresponding bit in INTREQ in your copper list (e.g. $009c,$8010), because it's not set/triggered by any actual event, it's strictly manually triggered. The reason for that is to have a unique source for the copper itself and not have to use/share any of the other bits (so you can easily identify the interrupt source).
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