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- Article 148 of comp.sources.amiga:
- Path: fishpond!mcdphx!asuvax!cs.utexas.edu!sdd.hp.com!elroy.jpl.nasa.gov!news.larc.nasa.gov!amiga-request
- From: amiga-request@ab20.larc.nasa.gov (Amiga Sources/Binaries Moderator)
- Newsgroups: comp.sources.amiga
- Subject: v91i095: CpuBlit 1.0 - speeds up blitter on a 68020/30 Amiga, Part01/02
- Message-ID: <comp.sources.amiga:v91i095@ab20.larc.nasa.gov>
- Date: 7 May 91 23:45:27 GMT
- Reply-To: ecarroll%maths.tcd.ie@pucc.PRINCETON.EDU
- Lines: 1731
- Approved: tadguy@uunet.UU.NET (Tad Guy)
- X-Mail-Submissions-To: amiga@uunet.uu.net
- X-Post-Discussions-To: comp.sys.amiga.misc
-
- Submitted-by: ecarroll%maths.tcd.ie@pucc.PRINCETON.EDU
- Posting-number: Volume 91, Issue 095
- Archive-name: utilities/cpublit-1.0/part01
-
- [ includes uuencoded executable and icons ...tad ]
-
- CpuBlit replaces the system BltBitMap routine with a version that uses your
- 68020/68030 when it is worthwhile to do so. This results in text scrolling
- twice as fast as usual, and in addition, the "colour flicker" effect normally
- present when scrolling multi-coloured text is removed.
-
- One advantage of the blitter is that while it is busy manipulating bitmaps,
- the CPU can be getting on with some other work. To facilitate this, you can
- tell CpuBlit to only use the CPU for blitting when it would otherwise be idle
- (i.e. no tasks are ready to run). This way, you get increased speed without
- affecting your Amiga's overall computing performance.
-
- If your Amiga only has a 68000, CpuBlit probably won't be of much use other
- than as a curiosity since the 68000 is slower than the blitter.
-
- This is V1.0, which fixes all known bugs in earlier versions available from
- ab20.larc.nasa.gov and bix.
-
- --
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