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CT60 and related things BBS
| Re: now everything clear |
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Posted by: hencox
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Oct,19.2009-20:35
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Yes, now you've confused it a bit I think. ;)
The SuperVidel has 32 physical datalines to its 2 DDR memories (16 lines to each memory chip). We run these memories at 210MHz and together with the DDR functionality (two transactions per clock cycle) this gives us 32*210M*2 = 13.44Gbit/s = 1.68Gbyte/s. This is the total datarate budget for all transactions, including screen updates and blitting to/from memory and DMA transfers to/from the ct60. So if a high resolution like 1600x1200x24bit takes 500MByte/s to update, then there's just 1.2GBytes/s left for blitting stuff. And if running dual screen output at this resolution there's just 700MBytes/s left.
The same scenario applies for the Radeon, except that it has 128 datalines to its DDR memories, and therefore 6.8 - 8 GByte/s.
/Henrik
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[All messages in this thread] [Start new thread]
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Topic
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Posted by
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Date
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I'm so confused!
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JoeAtari
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Oct,17.2009-05:06
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Re: I'm so confused!
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Beetle
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Oct,17.2009-13:13
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Re: I'm so confused!
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quackmore
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Oct,17.2009-20:25
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Not confused
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Nature
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Oct,18.2009-12:23
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now everything clear
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Beetle
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Oct,18.2009-13:11
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Re: now everything clear
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Beetle
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Oct,18.2009-13:13
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Re: now everything clear
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PeP
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Oct,18.2009-15:21
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Re: now everything clear
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PeP
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Oct,18.2009-15:23
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Re: now everything clear
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Beetle
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Oct,18.2009-16:16
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Re: now everything clear
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Instream
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Oct,18.2009-16:20
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Re: now everything clear
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Instream
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Oct,18.2009-16:34
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Re: now everything clear
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Beetle
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Oct,18.2009-21:10
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Re: now everything clear
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quackmore
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Oct,19.2009-04:43
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Re: now everything clear
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hencox
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Oct,19.2009-20:35
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Re: now everything clear
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FDR1980
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Oct,20.2009-01:28
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Re: now everything clear
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quackmore
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Oct,20.2009-13:38
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Re: I'm so confused!
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ggn
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Oct,20.2009-07:50
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Re: I'm so confused!
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Beetle
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Oct,20.2009-11:38
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Re: I'm so confused!
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quackmore
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Oct,20.2009-13:51
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Re: I'm so confused!
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ggn
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Oct,21.2009-09:13
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Re: I'm so confused!
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Beetle
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Oct,21.2009-11:41
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Re: I'm so confused!
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Didier Méquignon
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Oct,21.2009-12:44
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Re: I'm so confused!
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Rodolphe
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Oct,20.2009-18:19
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Re: I'm so confused!
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calimero
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Nov,01.2009-12:34
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Re: I'm so confused!
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PeP
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Oct,20.2009-20:32
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What's the anti-troll code?
That's your personal code to be able to add comments and messages on the dhs.nu site.
Don't have a code or forgot it? Fix it here.
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