23 November 2010, 21:14 | #61 |
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@Retrofan @Riempie
We have a policy on taking preorders and advertising stock that is actually in production and confirmed as arriving at AmigaKit.com imminently. There is no point advertising Indivision MKII and taking pre-orders when it hasn't yet even got off the drawing board. Advertising speculative future products that haven't even been produced yet would not do our reputation any good. Before going ahead and taking any pre-orders we always get authorisation from Individual Computers. |
23 November 2010, 23:09 | #62 |
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I absolutely agree! It seems no sense to already offer a product which hasn't been made yet.
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08 December 2010, 07:51 | #63 |
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@Jens
Is there some documentation available of the Indivision ECS (in case some people wants to ports games or something else) like Oliver is actually doing for ADOOM ? |
08 December 2010, 09:01 | #64 | |
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Quote:
The idea would be to use a simple runlength-encoding with the spare bits that you transfer with every cycle. This would let you transfer up to 16 pixels of 12 bit colour resolution with a single write access, which would surely benefit many games. I'd expect that the gain from the write performance is higher than the loss from the conversion (which would probably fit into the cache of a 68030). Now that development of the ACA cards is finished, I should push OlĂver to write that documentation and follow up on our thoughts :-) Jens |
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08 December 2010, 10:23 | #65 |
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08 December 2010, 10:49 | #66 |
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Jens already has the documentation for the Indivision ECS GFX mode ( it has been part of Indivision ECS since February), however, at this point I still like to reserve the right to make further changes to the FPGA core.
Is there anything particular you guys want to write for Indivision ECS, or is it something like: "release the docs, and maybe someone else will do something for it" ? Last edited by Oliver_A; 08 December 2010 at 10:56. |
08 December 2010, 11:47 | #67 |
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08 December 2010, 12:57 | #68 |
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I'd be interested in using the Indivision AGA Mrk 2 mode when it comes out.
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08 December 2010, 14:05 | #69 |
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08 December 2010, 16:58 | #70 | |
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Quote:
Besides, another problem is that the CPU can only write to AGA registers using a 16 bit bus, limiting performance to 3.58 MB/s, while 32 Bit CPU Chip-Ram access is 7.14 MB/s. What can, and will be, implemented in Indivision AGA MK2 is Graffitti support. On ECS, Graffitti is of limited use, because you have to set up a hires, 4 bitplane screen, which eats almost all DMA bandwidth. Hence the new Indivision GFX mode, which always allows access to the framebuffer at maximum bus speed, no matter what resolution and colour depth. On AGA however, hires 4 bitplanes is less DMA time consuming than lores 8 bitplanes. Meaning that 256 colour Graffitti mode is faster than 256 colour AGA mode, even if you manage to do C2P in copy time. Well, when the new ADoom is finished, I'm going to release the sourcecode along with the Indivision ECS register description. The most important routines for initializing the new mode can be found in the "indivision.h" file. Last edited by TCD; 08 December 2010 at 16:59. Reason: Back to back posts merged. Use multi-quote. |
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08 December 2010, 20:40 | #71 |
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08 December 2010, 23:52 | #72 |
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Well if you release some sample code with the Indivision Mrk2, I will add Graffitti to ScummVM AGA then
Last edited by NovaCoder; 01 June 2011 at 04:40. |
09 December 2010, 10:09 | #73 |
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I wonder if it would be possible to make a Shapeshifter driver that uses the Indivision ECS' direct framebuffer mode? I imagine if this worked it would open a whole world of new games to play on an A600 with ACA630, A603 and IndivisionECS.
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09 December 2010, 10:17 | #74 | |
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Quote:
this is something I am actually working on. |
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09 December 2010, 10:33 | #75 |
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Thank you Oliver!!! My A600 is going to rule!
What maximum resolution do you think will be usable? Is 800x600 in 256 colours too much to ask? |
09 December 2010, 10:47 | #76 | |
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Quote:
However, it's still in very early stages and it might take some time to get it done properly. Last edited by Oliver_A; 09 December 2010 at 10:52. |
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09 December 2010, 23:15 | #77 |
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If not Hires, even the Lowres modes would be very helpful for ShapeShifter & Indivision ECS w. Graffiti emulation. Not many people know, that ShapeShifter runs even in 320x256 mode and can run for example Dungeon Master II full screen this way, which is super and low-res is always faster than hi-res.
So keep up the good work Oliver, it will be really appreciated, I am sure. |
10 December 2010, 11:33 | #78 |
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17 December 2010, 13:06 | #79 |
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17 December 2010, 13:26 | #80 |
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a backplate would be nice (no hassel to install) , just to use the space where the scsi-card should have been for my blizzard 1230iv...
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