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- Path: sparky!uunet!pipex!unipalm!uknet!mcsun!sunic!seunet!enea!tope
- From: tope@enea.se (Tommy Petersson)
- Newsgroups: comp.sys.amiga.graphics
- Subject: Re: Problem with No New Copper in A4000
- Message-ID: <1992Sep15.160424.25495@enea.se>
- Date: 15 Sep 92 16:04:24 GMT
- References: <1992Sep15.023838.16397@news.iastate.edu>
- Organization: Enea Data AB
- Lines: 21
-
- barrett@iastate.edu (Marc N Barrett) writes:
- - There is one thing about the AGA chipset that I've forgotten to mention.
- - This is the drawbacks to the lack of improvements to the copper. In the
- - ECS, the copper requires 2 scanlines to update the palette registers between
- - pull-down screens. The AGA Lisa chip now has many more palette registers,
- - but the copper has not been updates accordingly. The result is bigger
- - blank space between pull-down screens on the AGA chipset. A total of 11
- - scanlines of space, in fact. Thus, you can write off enhanced equivelents
- - to the Dynamic HiRes or SHAM modes for the AGA chipset.
- -
- - ---
- - | Marc Barrett -MB- | email: barrett@iastate.edu
- - --------------------------------------------------
-
- I'll bet that not many are crying for not having Dynamic HiRes or SHAM on
- their 4000's. The HAM8 mode is NOT restricted to 100x200 resolution :-)
-
- --
- =============================================================================
- Tommy Petersson tope@enea.se Enea Data AB, Sweden
- =============================================================================
-