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16 May 2013, 15:02
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#1 |
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Registered User
Join Date: Aug 2008
Location: Salisbury
Posts: 767
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Please help me!! Blitter pain!
Please tell me I'm doing something wrong here..
I have two single bit plane areas 320*8*64 pixels (or 40 bytes wide) I want to copy one area to the other with the blitter so code should be,., Code:
lea $dff000,a6 WAITBLIT move.l #_basepattern,bltapt(a6) move.l #_pattern1,bltdpt(a6) move.l #-1,bltafwm(a6) move.w #$09f0,bltcon0 move.w #$0000,bltcon1 move.w #0,bltamod(a6) move.w #0,bltdmod(a6) move.w #(64*8)<<6+20,bltsize(a6) Just a straight copy, no mask no nothing... |
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16 May 2013, 15:37
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#2 |
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Join Date: Jul 2008
Location: Sweden
Posts: 2,269
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You're not setting bltcon0 and bltcon1, you forgot the (a6) as base address.
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16 May 2013, 16:16
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#3 |
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Registered User
Join Date: Aug 2008
Location: Salisbury
Posts: 767
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FFS!
MEga facepalm! |
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16 May 2013, 16:29
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#4 |
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Join Date: Jul 2008
Location: Sweden
Posts: 2,269
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I do this all the time, and I never get any better at spotting it. It always takes someone else to see it.
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16 May 2013, 22:13
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#5 | |
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AMOS Extensions Developer
Join Date: Jun 2007
Location: near Cambridge, UK
Age: 44
Posts: 1,924
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Quote:
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15 June 2013, 18:59
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#6 |
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Moderator
Join Date: Nov 2004
Location: Eksjö / Sweden
Posts: 5,657
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