Article View: comp.sys.next.hardware
Article #1330Instructions on modifying CPU board for multi-CPU NeXTcube
From: Brian Willoughby
Date: Thu, 31 Dec 1992 10:41
Date: Thu, 31 Dec 1992 10:41
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I have heard from other UseNet folks that there was a posting (a long time ago) in comp.sys.next about how to modify a NeXTcube CPU board so that it would function in a different slot than the standard one - and also so it would not interfere with a second CPU board in the main position. I believe this involved electrical modifications to the NeXTbus chip so that only power would come from the bus. I don't believe there was any need to modify the monitor outputs, since the NeXTcube can handle a NeXTdimension setup with nothing plugged into the mono output of the main CPU (unlike the NeXTstation which doesn't like an open circuited monitor output). This modified CPU board could then be networked to an unmodified main CPU for additional processing. Does anyone have a copy of this posting that they could e-mail to me? If not, can anyone remember when it was posted? (perhaps I could try grep'ing through the comp.sys.next archives if I could narrow down the search to a specific time frame). P.S. My interest has been renewed in this hack upon pondering the possibility of obtaining a NeXTcube Turbo board and then modifying my original 25 MHz '040 board to operate my Optical Disk from another slot in my NeXTdimension system. -- Brian Willoughby Software Design Engineer, BSEE NCSU BrianW@SoundS.WA.com Sound Consulting: Software Design and Development NeXTmail welcome - NO EMAIL SOLICITATION without prior permission
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Newsgroups: comp.sys.next.hardware Path: arc1-ca.pugleaf.net!sparky!uunet!nwnexus!sounds!brianw From: BrianW@SoundS.WA.com (Brian Willoughby) Subject: Instructions on modifying CPU board for multi-CPU NeXTcube Message-ID: <C04DoL.L6J@sounds.wa.com> Sender: brianw@sounds.wa.com (Brian Willoughby) Reply-To: BrianW@SoundS.WA.com Organization: Sound Consulting, Bellevue, WA, USA Date: Thu, 31 Dec 1992 10:41:08 GMT Lines: 23