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6100 with G3 *and* Nubus
- Thread starter Bunsen
- Start date
It's aesthetically ugly and the lid helps out with that, but technically it's FUGLY/inelegant!
Give my sub-terranean IIsi PDS hack a look see . . .
. . . take four inexpensive flex cable PCI Risers from eBay, one HPV Card and ANY G3 Card . . .
. . . two aspirins for the resulting headache . . .
. . . and call me in the morning! :approve:
Give my sub-terranean IIsi PDS hack a look see . . .
. . . take four inexpensive flex cable PCI Risers from eBay, one HPV Card and ANY G3 Card . . .
. . . two aspirins for the resulting headache . . .
. . . and call me in the morning! :approve:
Seems to me that heat would be a problem in something that cramped, though I salute their ingenuity.
Heat and cooling is why a well ventilated sub-basement is the way to go for PDS/NuBus hacking. I've got all the parts necessary but three more of those PCI cables . . .
. . . I'm thinking that my 6100 is going to have a Sub-Basement PDS hack before my IIsi! }
. . . I'm thinking that my 6100 is going to have a Sub-Basement PDS hack before my IIsi! }
I'm ordering four more of the Sintech PCI cables and tackling this hack alongside my SuperIIsi™ Sub-Basement PDS hack, so it's time to be a bit less cryptic.
The puzzle was meant for Bunsen, who needs to get a Sound Card into the NuBus adapter of his 6100.
By moving the Accelerator, extending the PDS to the underside of the 6100 MoBo, all the PDS pins are available to the NuBus Adapter and the G3 card.
The reason for the 6100's NuBus adapter's finicky performance when it comes to G3 Cards is more than likely the same as the problem I identified with the SE/30 vs. IIsi PDS pinouts. I tested the IIsi NuBus Adapter stacked on top of of Straight up Hacked bare SuperMac Video Card RA PDS adapter out of curiosity when I'd already proved that the adapted adapter worked by running the Radius color Pivot II/IIsi card atop the poor critter.
When that didn't work, further research turned up a "NuBus" signal on the IIsi PDS that's missing on the SE/30 PDS and is unimplemented on the bare SuperMac Riser Card. So the IIsi NuBus adapter won't work in the SE/30's PDS without synthesizing the NuBus signal, as was obviously implemented the Expanse NuBus Chassis interface.
It seems highly probable that Sonnet didn't bother to implement this same/similar signal on the PDS Passthru of their Accelerator, as it was intended for a the AV/HPV Cards "normally" installed in the X100 PDS. It turns out that the NuBus Signal is likely present on the MAXpowr G3 PDS Passthru, but not the Sonnet Crescendo/NuBus G3.
The only curiosity is that the Crescendo/NuBus worked at all in this scenario, which leads me to believe the problem may be a more problematic combination of implementations. Address space stomping and the NuBus Card's PseudoSlot ID might be rearing their ugly heads in some strange combination.
So I'm checking it out, more later, or should I start a new thread about my proposed implementation of this interesting hack? :?:
The puzzle was meant for Bunsen, who needs to get a Sound Card into the NuBus adapter of his 6100.
By moving the Accelerator, extending the PDS to the underside of the 6100 MoBo, all the PDS pins are available to the NuBus Adapter and the G3 card.
The reason for the 6100's NuBus adapter's finicky performance when it comes to G3 Cards is more than likely the same as the problem I identified with the SE/30 vs. IIsi PDS pinouts. I tested the IIsi NuBus Adapter stacked on top of of Straight up Hacked bare SuperMac Video Card RA PDS adapter out of curiosity when I'd already proved that the adapted adapter worked by running the Radius color Pivot II/IIsi card atop the poor critter.
When that didn't work, further research turned up a "NuBus" signal on the IIsi PDS that's missing on the SE/30 PDS and is unimplemented on the bare SuperMac Riser Card. So the IIsi NuBus adapter won't work in the SE/30's PDS without synthesizing the NuBus signal, as was obviously implemented the Expanse NuBus Chassis interface.
It seems highly probable that Sonnet didn't bother to implement this same/similar signal on the PDS Passthru of their Accelerator, as it was intended for a the AV/HPV Cards "normally" installed in the X100 PDS. It turns out that the NuBus Signal is likely present on the MAXpowr G3 PDS Passthru, but not the Sonnet Crescendo/NuBus G3.
The only curiosity is that the Crescendo/NuBus worked at all in this scenario, which leads me to believe the problem may be a more problematic combination of implementations. Address space stomping and the NuBus Card's PseudoSlot ID might be rearing their ugly heads in some strange combination.
So I'm checking it out, more later, or should I start a new thread about my proposed implementation of this interesting hack? :?:
The 32 bit section of the flexible PCI Riser is the same form factor/pin count as the larger half or the 6100 PDS Slot/Edge Card Connectors.
The blue electrical tape shields the PCB/Ribbon Cable soldered to a stubby edge card connector on Male & Female ends of the cable.
Lop the EdgeCard end off the cables for another project, leaving approximately 75mm/3" from the blue tape on the Slot/Female end connector
The shorter section of the Riser Slots will be cut off at any random point and then mated to the appropriately trimmed end of the second PCI Riser's longer sections.
The ribbon cables will be split off after the X-ACTO Razor Saw's ( it's a Micro Dozuki Noko [
] ]'> ) work is done.
The two sections of the cut off cables will be installed on the POS HPV Card and epoxied together along with splints.
After you have two good 6100 Flexible Cable PDS Slot "Lowsers" in hand, hopefully NOT epoxied to the HPV:
Cut the wires on the Female end of one pair of cables to approx 15mm from the Blue Tape.
Slit, strip, twist, solder & nip each matched pair of 75mm & 15mm connections according to sketch to be provided AFTER I noodle-n-doodle.
Solder all nipped cable pair connections to the appropriate Thru Hole "Cones" of the matching PDS Pins on the bottom side of 6100 MoBo.
I'm considering using some kind of 7mm/20 mil metal tubing as an intermediary. I've got some RA M-F DB-XX Thru-Hole Connector parts I could cut to length, but I'm not sure it's worth the effort . . .
. . . doing it that way should make keeping all the leads for each of the two connectors exactly equal in length . . .
. . . without adding an appreciable length to the connections . . .
. . . add shrink wrap . . . NAH! Neat and pretty ain't my style!
Insert G3 Accelerator Card into connector closest to PDS & the HPV Card into the Connector farthest from the PDS.
< . . . makes note to check tolerances for the second cable's optimal route . . . running under or over the Accelerator . . . >
Cross fingers and hope the 245s on the HPV card can drive a 70mm Ribbon Cable!
Insert head in oven and bake at 425 degrees F . . . until brain is fried. :lol:
The blue electrical tape shields the PCB/Ribbon Cable soldered to a stubby edge card connector on Male & Female ends of the cable.
Lop the EdgeCard end off the cables for another project, leaving approximately 75mm/3" from the blue tape on the Slot/Female end connector
The shorter section of the Riser Slots will be cut off at any random point and then mated to the appropriately trimmed end of the second PCI Riser's longer sections.
The ribbon cables will be split off after the X-ACTO Razor Saw's ( it's a Micro Dozuki Noko [
] ]'> ) work is done.The two sections of the cut off cables will be installed on the POS HPV Card and epoxied together along with splints.
After you have two good 6100 Flexible Cable PDS Slot "Lowsers" in hand, hopefully NOT epoxied to the HPV:
Cut the wires on the Female end of one pair of cables to approx 15mm from the Blue Tape.
Slit, strip, twist, solder & nip each matched pair of 75mm & 15mm connections according to sketch to be provided AFTER I noodle-n-doodle.
Solder all nipped cable pair connections to the appropriate Thru Hole "Cones" of the matching PDS Pins on the bottom side of 6100 MoBo.
I'm considering using some kind of 7mm/20 mil metal tubing as an intermediary. I've got some RA M-F DB-XX Thru-Hole Connector parts I could cut to length, but I'm not sure it's worth the effort . . .
. . . doing it that way should make keeping all the leads for each of the two connectors exactly equal in length . . .
. . . without adding an appreciable length to the connections . . .
. . . add shrink wrap . . . NAH! Neat and pretty ain't my style!
Insert G3 Accelerator Card into connector closest to PDS & the HPV Card into the Connector farthest from the PDS.
< . . . makes note to check tolerances for the second cable's optimal route . . . running under or over the Accelerator . . . >
Cross fingers and hope the 245s on the HPV card can drive a 70mm Ribbon Cable!
Insert head in oven and bake at 425 degrees F . . . until brain is fried. :lol:
Just re-read your question, belay the garbled .TXT above . . .
Yes.
Not tears yet, gotta do the research before jumping off burned bridges. It may be something as simple as a clean ground line. That could explain the erratic/non performance issues documented on that hack page.
If you, or anyone else interested in this kind of nonsense, should run across the NuBus Open Standard Docs in your searches, post 'em, I'm TIRED!!!!!!!!!! |)
I ALSO need a 6100 NuBus Adapter Card, anybody got an extra one? :?: }
)
iCrap!!!!!!!!!!!!!
This project may be a non starter . . . 
I put the 6100 back together after playing with it a bit to make sure everything works before ordering the cables for the hack and it's dead as a doornail. :'(
I put the 6100 back together after playing with it a bit to make sure everything works before ordering the cables for the hack and it's dead as a doornail. :'(
I have had a 6100 that was totally dead, no startup chime, and so has at least one person on this board. And in both cases, they sprang back to life after a period of time, with no real explanation. Try washing and drying the board, reseating any cache, remove all off-board RAM, several dance rituals, and you should be good to go. It seems to be the time spent fiddling that eventually gets it to go.
Yeah, my 6100 went wonk-co on me a while back. Putting in the original cache back in did the trick for me.
Thanks guys, I'll give it a good workover. ISTR that it came with a spare PSU that I can try too.
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