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- Newsgroups: comp.sys.amiga.programmer
- Path: sparky!uunet!panther!mothost!lmpsbbs!supra.comm.mot.com!rittle
- From: rittle@supra.comm.mot.com (Loren James Rittle)
- Subject: Re: New hardware reference guide?
- Organization: Land Mobile Products Sector, Motorola Inc.
- Date: Mon, 16 Nov 1992 19:45:18 GMT
- Message-ID: <1992Nov16.194518.14603@lmpsbbs.comm.mot.com>
- Keywords: n
- References: <36847@cbmvax.commodore.com> <BxM1ED.J61@visix.com> <37025@cbmvax.commodore.com>
- Sender: news@lmpsbbs.comm.mot.com (Net News)
- Nntp-Posting-Host: 145.1.80.40
- Lines: 31
-
- In article <37025@cbmvax.commodore.com> chrisg@cbmvax.commodore.com (Chris Green) writes:
- > An intuition screen under 3.0 (or a view under <3.0) provides exactly
- >the same capabilities (+ more: 8 way 60hz scroll, sprites, etc.). Open
- >a screen or ViewPort and then bang the bits either with the CPU or
- >blitter (via OwnBlitter). If you're careful (like don't assume that you
- >"know" what the BytesPerRow will be for a given screen size), you're
- >a LOT more likely to remain compatible then if you bang on the copper
- >and display stuff directly.
-
- Can anyone explain in what way certain games (see ``The Problem''
- below) are breaking under AGA?
-
- From Chris' comment, I have a sneaking suspicion that it has to do with
- games assuming that they know what the BytesPerRow will be for a given
- screen size.
-
- What changed ECS -> AGA and OS 2.0 -> OS 3.0 to cause this problem?
-
- The problem:
- It looks like each line of graphics are smeared or/and offset by a
- few bytes. Ultima 6, as well as other games, displays this problem.
- Of course, this makes it very hard to play... :-) If one boots in
- ECS mode, the games look fine.
-
- Regards,
- Loren
- --
- Loren J. Rittle (rittle@comm.mot.com)
- Systems Technology Research (IL02/2240)
- Motorola, Inc.
- (708)576-7794
-