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- Path: soap.news.pipex.net!pipex!usenet
- From: m.hendry@dial.pipex.com (Mathew Hendry)
- Newsgroups: comp.sys.amiga.misc
- Subject: Re: MMU and increased graphics speed!
- Date: Sat, 24 Feb 96 22:24:04
- Organization: Private node.
- Distribution: world
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- References: <505.6625T1286T256@lustudat.student.lu.se> <19960222.5BB088.106B5@ao062.du.pipex.com> <1236.6627T1399T2833@lustudat.student.lu.se>
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-
- Niklas Brunlid (nma95nbr@lustudat.student.lu.se) wrote:
- : In article "Re: MMU and increased graphics speed!" Mathew Hendry said:
- :
- : >Niklas Brunlid (nma95nbr@lustudat.student.lu.se) wrote:
- : >: Would it be possible to write a patch with utilises the MMU to increase the
- : >: (WB) graphics speed on non-GFXcard-machines?
- :
- : >I assume you mean, by using the MMU to "move" Chip RAM into Fast RAM.
- :
- : >No, that would not be possible. The graphics chips access Chip RAM directly,
- : >without interference from the CPU. The MMU is useless in such circumstances.
- :
- : And you couldn't wedge in the routines between the WB and the graphics
- : routines? There are several patches that affect the look of the WB, take
- : Workbench95 for example.
-
- Of course it's possible to optimise / replace AmigaOS' graphics routines
- using patches - e.g. CPUBlit, which gives noticable graphics speedups on
- machines with fast CPUs.
-
- Are you suggesting that the MMU could be used in such patches? If so you'll
- have to clarify a bit - how exactly would you intend it to be used?
-
- -- Mat.
-