16 December 2008, 10:31 | #41 | ||
move.l #$c0ff33,throat
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It is one of Brainwalker's best intros IMHO, then again, I liked all of his stuff. =)
He's coding mobile games these days btw. =) Quote:
Quote:
(See this thread) Check the intro on an AGA Amiga and you can clearly see where the trick is used then. Last edited by StingRay; 16 December 2008 at 11:17. Reason: lots of text added :) #2: small mistake fixed =) |
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16 December 2008, 10:38 | #42 | ||
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Quote:
Quote:
And I believe that Toni also tested it before implementing it in WinUAE. |
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16 December 2008, 11:13 | #43 | |
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Quote:
Btw, the scroller part also must use something peculiar to a500 since it also doesn't work on aga. |
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16 December 2008, 11:20 | #44 | |
move.l #$c0ff33,throat
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Quote:
Probably the usual "no need to wait for the blitter" thing. |
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16 December 2008, 17:23 | #45 | |
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Quote:
Denise ignores all disabled planes. HAM5 = 6th plane is always zero, BPL6DAT is ignored. HAM4 = both BPL5DAT and BPL6DAT are ignored. |
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16 December 2008, 18:24 | #46 |
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17 December 2008, 08:26 | #47 | |
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Quote:
ADDED: I can confirm this weird "feature". COPJMP2 also does the same. (COPLC2 gets copied to BLTDPT) Last edited by Toni Wilen; 17 December 2008 at 18:20. |
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17 December 2008, 19:33 | #48 |
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More about COPJMP+Blitter problem..
It can be triggered very easily without multiple strobes if bitplanes are disabled. Only need to access COPJMP1 or 2 while blitter is running and copper was waiting. Interesting notes: D-channel only: pointer changes C-channel only: pointer also changes A or B channel only: blitter works as expected (A,B, C cases checked with logic analyzer by snooping data bus) Multiple channel combinations not yet tested. |
17 December 2008, 22:47 | #49 |
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