home *** CD-ROM | disk | FTP | other *** search
- Path: news.mel.aone.net.au!usenet
- From: mpa@iig.com.au (Mark P Allen)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: VLAB Motion/MovieShop "Data Transfer Phase Error"?
- Date: 26 Mar 1996 09:56:07 GMT
- Message-ID: <2707.6659T660T1597@iig.com.au>
- References: <4479.6653T1012T1736@iig.com.au> <2932.6653T1409T829@crash.cts.com>
- <4838.6655T634T58@iig.com.au> <2092.6658T679T2756@crash.cts.com>
- NNTP-Posting-Host: cnsta08.iig.com.au
- X-Newsreader: THOR 2.22 (Amiga;TCP/IP) *UNREGISTERED*
-
-
- On 26-Mar-96 05:55:41, Phil Wright wrote:
-
- >>I tried to correct the A3000T SCSI termination by placing the Quantum
- >>LPS525S system drive (terminated) on it's internal bus (ie.,
- >>ext/CDROM/term -> motherboard/noterm -> int/LPS525/term). Immediate and
- >>frequent lockups resulted. Frustrating to say the least. Needless to say I
- >>immediately returned the LPS525 to the WARP Engine.
-
- PW> Is it possible that you have Synchronous transfers enabled in the A3000T
- PW> BattMem bits and the Quantum LPS525S can't really handle it?
-
- It wasn't at the time, but is now, since I tried it to see if it would
- help things since the WARP is syncronous by default.
-
- PW> I've got a Quantum Maverick 540S on my A3000 internal buss and it really
- PW> was unhappy when I enabled the Synchronous transfers of the A3000 SCSI.
-
- Noted
-
- >>And why I tend to suspect problems may get worse rather than better if I try
- >>to mix the devices and increase the general transaction levels between the
- >>two SCSI busses. Will experiment further though.
-
- PW> This shouldn't happen if you move your DAT, CDROM and system drives to
- PW> the A3000T SCSI bus as VLAB won't (shouldn't) be accessing any of them
- PW> during playback.
-
- That's true, but general system usage would necessitate trans-controller
- transactions all the time (including backing up the MovieShop partitions).
- This is what I want to avoid if there is any chance of a conflict.
-
- >>Thanks very much for your input.
-
- PW> No problem. Good luck!
-
- I am now sure that some of the problems are MovieShop related. I hear that
- some of this bahaviour has changed with various revisions of the software.
- MovieShop 3.4 offers no new features over v3.0, but is supposed to be just
- internal improvements. Will see what it does...
-
- >>BTW, while it doesn't affect the SCSI READ error on the Exabyte as far as I
- >>know, changing the video and audio partitions to separate drives seems to
- >>have markedly improved MovieShop's "data tansfer phase error".
-
- PW> Putting video and audio on seperate _drives_, not partitions, is pretty
- PW> much mandatory for NLE systems. Otherwise the drive is constantly
- PW> seeking as it bounces from file to file for the different types of data.
-
- Logical :^)
-
- With MovieShop 2.6, I had no problems whatsoever running both from the
- one drive. Both the drives I am using outperform the VLAB/Z2 bus by huge
- margins. MS v3.0 certainly seemed to introduce new problems to this
- arrangement, though I certainly concede that using different drives has to
- be the best arrangement in any case.
-
- Regards,
-
- Mark
-
- ---
- mpa@iig.com.au - Ph:+61-70-332930 - Cairns
- Wishful Vision - Fx:+61-70-332931 - Australia
- ---
-
-
-