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- Newsgroups: comp.sys.ibm.pc.hardware,comp.benchmarks,comp.sys.intel
- Path: sparky!uunet!spool.mu.edu!agate!boulder!ladymacb!drew
- From: drew@ladymacb.cs.colorado.edu (Drew Eckhardt)
- Subject: Re: ATI Ultra PRO 24-bit?
- Message-ID: <1992Nov9.080150.18564@colorado.edu>
- Sender: news@colorado.edu (The Daily Planet)
- Nntp-Posting-Host: ladymacb.cs.colorado.edu
- Organization: University of Colorado at Boulder
- References: <smithbm.721061471@craft.camp.clarkson.edu> <8eyl1Bi00YdeI0qocA@andrew.cmu.edu> <smithbm.721264472@craft.camp.clarkson.edu>
- Date: Mon, 9 Nov 1992 08:01:50 GMT
- Lines: 44
-
- In article <smithbm.721264472@craft.camp.clarkson.edu> smithbm@craft.camp.clarkson.edu (Azrak) writes:
- >David Eugene Dwiggins <dd2x@ANDREW.CMU.EDU> writes:
- >
- >>Nope, you won't be able to write a nifty program to get the card into
- >>unusual modes, because ATI is not going to tell you how.
- >
- >>I was going to get an Ultra+, and I called ATI, and they said that if
- >>I wrote them a note on company letterhead stating the reason I wanted to
- >>know how to program their card they would consider selling me the
- >>programming information.
- >
- >>I thought about telling them if they should send me a letter on company
- >>letterhead why I should buy a product that they won't tell me how to use.
- >>But I refrained, and cancelled my order.
- >
- >>DON'T BUY ATI PRODUCTS IF YOU WANT TO KNOW PROGRAMMING INFORMATION.
- >
- >>Gene
- >
- >Huh????
- >
- >You mean the manual you get with the ATI Graphics Ultra Pro doesn't
- >tell you how to switch into 640x480x16.7M mode???
- >
- >My manual from the ATI VGAWonder 256k (yes, old) told me what HEX
- >value to use to switch into any mode the card supported, and even
- >told me how the bit planes were organized.
-
- You feed that hex value to the BIOS. When you need to program the board's
- registers from inside protected mode, such as in a Xserver running under unix,
- you can't call BIOS, and that information is worthless.
-
- You need to know how to program the clock synthesizer among other things,
- which most manufacturers will happily provide. However, a few manufacturers
- are using propriety clock synthesizer chips, and not providing programming
- information without an NDA, etc.
-
- Thus, without reverse engineering the BIOS you can't write a free Xserver
- for the card.
- --
- Microsoft is responsible for propogating the evils it calls DOS and Windows,
- IBM for AIX (appropriately called Aches by those having to administer it), but
- marketing's sins don't come close to those of legal departments.
- Boycott AT&T for their absurd anti-BSDI lawsuit.
-