home *** CD-ROM | disk | FTP | other *** search
- Path: comma.rhein.de!serpens!not-for-mail
- From: mlelstv@serpens.rhein.de (Michael van Elst)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: Wolfenstein Texture mapping problem
- Date: 23 Mar 1996 16:45:57 +0100
- Organization: dis-
- Message-ID: <4j16bl$d35@serpens.rhein.de>
- References: <4glh4j$rgg@maureen.teleport.com> <4guqo5$4l9@news01.uni-trier.de> <38232736@kone.fipnet.fi> <4hh592$8j6@serpens.rhein.de> <4i4geq$9b3@sunsystem5.informatik.tu-muenchen.de> <4i4qds$346@serpens.rhein.de> <4j017m$s3p@sunsystem5.informatik.tu-muenchen.de>
- NNTP-Posting-Host: serpens.rhein.de
-
- fischerj@Informatik.TU-Muenchen.DE (Juergen "Rally" Fischer) writes:
-
- >My friend also reports word writes to his VLB beeing faster than
- >longword writes. I don't understand how this can happen,
- >because a 32bit write IMHO is split to 2 word writes by cpu
- >(or any other logic ?) anyway. what's the secret ?
-
- VLB is a 32bit bus. However, some VLB graphics cards are just
- poor adaptions of old ISA technology and use a slow 16bit bus
- internally. The card therefore delays the 32bit cycle so that
- it can do two 16bit cycles internally. But if you do two 16bit
- transfers yourself you can interleave them with other cycles.
-
- Regards,
- --
- Michael van Elst
-
- Internet: mlelstv@serpens.rhein.de
- "A potential Snark may lurk in every tree."
-