18 October 2008, 23:47 | #1 |
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Amiga CD32 Native Resolution?
This may be a noob question, I guess, but I've looked everywhere, and only gotten very unclear answers varying from 1280x512 (which seems unreasonably high for the console generation and I'm pretty sure is too high for the AGA to support) to 312x200.
So I was hoping for a definitive answer, from people who know what they're talking about: What's the Amiga CD32's native resolution? (just to be clear, by native resolution i mean the best resolution it can be used in that's not simply enlarging the picture) Last edited by xazarus; 18 October 2008 at 23:53. |
19 October 2008, 00:52 | #2 |
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The Amiga range (including CD32) has a programmable video chip capable of a wide range of video resolutions.
The most common resolution of CD32 games would be 320x256 but it can and does change mid-game, even mid screen on some titles. Keep in mind that 720x576 is the maximum resolution of an interlaced PAL TV (without overscan). Last edited by alexh; 19 October 2008 at 00:58. |
19 October 2008, 00:53 | #3 | |
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320x256 640x256 1280x256 Pal interlaced: 320x512 640x512 1280x512 Those are the most wide spread resolutions. Each of these supports 1 to 8 bits per pixel. Note that the 1280 is not a wrong number. Yep, you better believe it In fact, with overscan it goes as high as 1440x566 Last edited by Thorham; 19 October 2008 at 07:15. |
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19 October 2008, 01:00 | #4 |
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1280 modes compatible with TV's?
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19 October 2008, 01:03 | #5 |
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19 October 2008, 03:27 | #6 |
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Does the CD32 have any native resolutions, like a lookup table stored in the rom?
I thought it all just was programmed screen modes and that it did whatever resolution you told it? As long as the hardware could keep up drawing.. |
19 October 2008, 07:14 | #7 | |
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Yes. All the screenmodes are programmed. |
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19 October 2008, 10:54 | #8 |
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Note that "programmable" means programmable display start and end position, PC-style fully programmable pixel clock is not possible. (only choices are 140ns,70ns or 35ns pixel clocks = lores/hires/superhires)
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19 October 2008, 13:21 | #9 |
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If by 'native' you mean 'most common' then the answer is 640x256 (or 640x200, seeing as you're in US and have NTSC TVs)
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19 October 2008, 15:19 | #10 |
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20 October 2008, 09:59 | #11 | |
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.. black screen .. frozzen system .. 1024x768 1280x720 1280x1024 ?! |
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20 October 2008, 11:07 | #12 | |
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EDIT: 256 pixel wide = 256 pixel wide mode that fills same area as regular 320 pixel lores mode. Last edited by Toni Wilen; 20 October 2008 at 11:37. |
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20 October 2008, 12:44 | #13 | |
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(HighGFX LowRes DblScan => 256 x 192 , but not TV compatible) EDIT: With collaps I mean, broken ChipMem refresh. This could happen if you programm very long scanlines (wide screens). The Hardware need some minimum "blanks" for DMA-refresh (paula = audio and disk dma). Last edited by Ratte; 20 October 2008 at 12:49. |
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20 October 2008, 23:54 | #14 |
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1472 x 566 in PAL Super Hi-Res Laced Maximum Overscan would be the highest resolution without additional hardware (SX32 VGA adapter).
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