Connect an oscilloscope to the output of the single-sided sensor and see if it works. If so, trace the signal through the logic and see if it gets to the I/O connector that goes to the greaseweazel.
On Wed, Jan 31, 2024 at 2:38 PM Mike Katz via cctalk <cctalk@classiccmp.org> wrote: > I have recently acquired a Qume Model 842 double sided 8" disk drive. > > I have reset all of the settings to factory default and hooked it up to > my greastweazle. > > The drive works perfectly for double sided disks (using the appropriate > index hole). > > However, the greaseweasel reports no index pulse when I put a single > sided diskette in the drive. I have attempted to clean out the sensor > for single sided diskettes to on avail. > > Does any one have any ideas? > > The grease weasel works perfectly when I connect SA-800 drives. > > I have not yet tried installing terminating resistors in the Qume. > > Thank you in advance for your help, > > Mike > > On 1/31/2024 12:56 PM, Martin Bishop via cctalk wrote: > > Ah, PPC VME cards, add VXworks, funky coprocessors, COTS IO and you have > definitely got something best avoided : details would involve libations. > > > > The conduction cooled chassis are OK and worth repurposing. > Contrariwise the VME bus is best avoided, whether classic 32b VME or the 64 > bit revision. However, the connectors for VME 64x backplanes and the form > factor have merit, but that is to depart from the past. > > > > Martin > > > > -----Original Message----- > > From: Wouter de Waal via cctalk [mailto:cctalk@classiccmp.org] > > Sent: 31 January 2024 18:34 > > To: cctalk@classiccmp.org > > Cc: Wouter de Waal <w...@dw.co.za> > > Subject: [cctalk] Re: Vmebus > > > > > >> Anyone have a VMEbus system they use at least occasionally? If so, what > >> make/model/config? > > I still use a couple of PPC VME boards (DY4 / Curtiss Wright > 182/183/184, both Conduction-Cooled and Air-Cooled) to test the tail end of > hardware that we are still shipping (by now EOL and basically NOS). > > > > But it's work, I don't find them interesting. > > > > If someone here has the warm fuzzies for PPC VME, we can talk :-) > > > > W > > > > -- Michael Thompson
