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- Path: informatik.tu-muenchen.de!fischerj
- From: fischerj@informatik.tu-muenchen.de (Juergen "Rally" Fischer)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: Searching for BLTCON0 value..
- Date: 6 Mar 1996 13:49:34 GMT
- Organization: Technische Universitaet Muenchen, Germany
- Distribution: world
- Message-ID: <4hk55e$pij@sunsystem5.informatik.tu-muenchen.de>
- References: <4hjopo$blp@news.uni-c.dk>
- NNTP-Posting-Host: hphalle0a.informatik.tu-muenchen.de
- To: skytech@inet.uni-c.dk (Michael Juhl)
- Originator: fischerj@hphalle0a.informatik.tu-muenchen.de
-
-
- In article <4hjopo$blp@news.uni-c.dk>, skytech@inet.uni-c.dk (Michael Juhl) writes:
- |> Organization: News Server at UNI-C, Danish Computing Centre for Research and Education.
- |> Lines: 24
- |> Message-ID: <4hjopo$blp@news.uni-c.dk>
- |> NNTP-Posting-Host: inet.uni-c.dk
- |> X-Newsreader: TIN [version 1.2 PL2]
- |>
- |>
- |> A friend of mine and I are currently making a game is assembler
- |> and we are ofcourse using the blitter, but we have this problem.
- |>
- |> We know a couple of BLPCON0 values like $09f0, $0dca ect.
- |> but we are searching for a value which can do this:
- |>
- |> (We want to mix two bitplanes. A bitplane of a plane unto the
- |> background)
- |>
- |>
- |> Bit values:
- |>
- |> PLANE BACKGROUND RESULT
- |> 0 0 0
- |> 0 1 1
- |> 1 0 0
- |> 1 1 0
- |>
- |>
- |> Does such a value exists, if so please E-Mail me at
- |>
- |> skytech@inet.uni-c.dk
- |>
-
-
- "plane" is A, "background" is C. D is result.
-
- miniterm:
- ABC D
- 000 0
- 001 1
- 010 0
- 011 1
- 100 0
- 101 0
- 110 0
- 111 0
-
- ^--- 01010000 = $50 (I hope no bug, all typed from mind)
-
- try $0b50 and don't forget to use APTR, CPTR, AND DPTR.
- ^---A DMA, C DMA, D DMA (I hope no bug)
-
- ------------------------------------------------------------------------
- fischerj@Informatik.TU-Muenchen.DE (Juergen "Rally" Fischer) =:)
-
-