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- Path: dispatch.news.demon.net!demon!redrobe.demon.co.uk
- From: Mike@Redrobe.demon.co.uk (Mike)
- Newsgroups: comp.sys.amiga.programmer,comp.sys.amiga.hardware
- Subject: Re: Blizzard 1230IV how good ?
- Date: 06 Mar 96 22:58:08 +0000
- Message-ID: <1859.6639T1378T402@Redrobe.demon.co.uk>
- References: <4h437c$hlh@sunsystem5.informatik.tu-muenchen.de>
- NNTP-Posting-Host: redrobe.demon.co.uk
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-
-
- Hi, Juergen "Rally" Fischer , on 29-Feb-96 11:38:20 you scribbled....
- >In article <1996Feb26.071134.3049@scala.scala.com>, scott@scala.scala.com
- >("Scott Drysdale") writes:
- >|> References: <42116493@phoenix.owl.de>
- >|> <1219.6615T886T2318@Redrobe.demon.co.uk> <38232436@kone.fipnet.fi>
- >|> Organization: US Research and Development - Scala Inc. Lines: 30 Xref:
- >|> informatik.tu-muenchen.de comp.sys.amiga.programmer:88010
- >|> comp.sys.amiga.hardware:124080
- >|>
- >|> In article <38232436@kone.fipnet.fi> "Jyrki Saarinen"
- >|> <jsaarinen@kone.fipnet.fi> writes:
- >|> >
- >|> >> ╗ Memory Speed Test ½
- >|> >> Copyright 1996 by Frank Wille.
- >|> >>
- >|> >> Type read write
- >|> >> Chip Ram 3742 kB/s 5747 kB/s
- >|> >> Fast Ram 11908 kB/s 15843 kB/s
- >|> >> -------
- >|> >>
- >|> >> This is in a 32col dblpal 720x520 screen (wb)
- >|> >>
- >|> >> I can get chip r/w 4349/6890 kB/s on a 2 colour screen :9
- >|> >> ^^^^
- >|> >> so thats approaching 7Mb/sec
- >|> >>
- >|> >> anybody care to explain why writes are faster than reads?
- >|> >
- >|> >Hmm. At least a programmer can insert free instruction
- >|> >after a CHIP-write but not after a CHIP-read. Dont know..
- >|> >Maybe some HW expert has an explanation?
- >|>
- >|> writes are probably faster than reads on certain hard drives because the
- >|> drive can accept the data for the write but do the actual writing later.
- >|> ie, the write doesn't have to wait for the heads to move and the disk to
- >|> spin to the proper sector.
-
- >I hope the Blizzard won't redirect chipmem writes to Harddisk :D
-
- No, but the A3640 does ;))
-
- Mike
-
- --
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- Mike Redrobe - Mike@Redrobe.demon.co.uk MikeRR on #Amiga
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