I'm not so good with words when it comes to describing my hackin' plans . . . but graphics? :?:
'
I've added just a single row of pins for the NuBus Connector's to the graphic for clarity's sake. There are a couple of ways to go about this for the final version. For starters, I'll solder "Machine Pin Header Strips" onto the soldertails of Slot C (Pseudoslot Address: $C) so I can just plug the full height Gemini Card straight into the IIsi NuBus Adapter's Connector. At this point, the top slot should be connected to the $F Address Space and Interrupt of the IIsi Adapter Card's Slot $F.
Hijacking another Interrupt/Address line to implement the second NuBus Slot will be the fun part of the hack! :approve:
Dunno, we'll see, that's why I've got a spare NuBus adapter and several spare Gemini Cards. [}
] ]'>
If things work out well in the proof of concept stage, I'll do my best to muck it up by removing the upper section of the Gemini Card as shown on the right. For starters, the gender changed DuoDock connector and the top 2/5 of the card will remain intact. This will stick up about an inch higher than the top of the IIsi Case would be if it were in place.
If all goes to plan . . . : . . . I'll probably order a NuBus EuroDin Wire Wrap Socket. I'll remove the top slot's connector from the Gemini Card. Soldering the wire wrap connector to the Gemini Card first will allow the slots to be tested again in the NuBus connector on the IIsi Adapter. If all works at that stage, the Connector on the IIsi Adapter will be removed and the Wire Wrap pins will be inserted as deeply as possible (the crystal Can is the highest part to clear) into the vacated NuBus Slot's ThruHoles and soldered into place and the extra wire wrap pin length will be clipped. At this point, the pair of Gemini Card Slots will only be offset about a quarter of an inch farther from the NuBus Adapter PCB than the original, single NuBus Slot.
I'll do an edge on view of the Hack as soon as I can get around to it. The figures in the IIsi DevNote for the edge-on/cross sectional view of the NuBus Adapter, MoBo and NuBus Card are pretty rough and not done to scale at all.
I hope this clears things up just a bit.
'
I've added just a single row of pins for the NuBus Connector's to the graphic for clarity's sake. There are a couple of ways to go about this for the final version. For starters, I'll solder "Machine Pin Header Strips" onto the soldertails of Slot C (Pseudoslot Address: $C) so I can just plug the full height Gemini Card straight into the IIsi NuBus Adapter's Connector. At this point, the top slot should be connected to the $F Address Space and Interrupt of the IIsi Adapter Card's Slot $F.
Hijacking another Interrupt/Address line to implement the second NuBus Slot will be the fun part of the hack! :approve:
Dunno, we'll see, that's why I've got a spare NuBus adapter and several spare Gemini Cards. [}
] ]'>If things work out well in the proof of concept stage, I'll do my best to muck it up by removing the upper section of the Gemini Card as shown on the right. For starters, the gender changed DuoDock connector and the top 2/5 of the card will remain intact. This will stick up about an inch higher than the top of the IIsi Case would be if it were in place.
If all goes to plan . . . :
. . . I'll probably order a NuBus EuroDin Wire Wrap Socket. I'll remove the top slot's connector from the Gemini Card. Soldering the wire wrap connector to the Gemini Card first will allow the slots to be tested again in the NuBus connector on the IIsi Adapter. If all works at that stage, the Connector on the IIsi Adapter will be removed and the Wire Wrap pins will be inserted as deeply as possible (the crystal Can is the highest part to clear) into the vacated NuBus Slot's ThruHoles and soldered into place and the extra wire wrap pin length will be clipped. At this point, the pair of Gemini Card Slots will only be offset about a quarter of an inch farther from the NuBus Adapter PCB than the original, single NuBus Slot.I'll do an edge on view of the Hack as soon as I can get around to it. The figures in the IIsi DevNote for the edge-on/cross sectional view of the NuBus Adapter, MoBo and NuBus Card are pretty rough and not done to scale at all.
I hope this clears things up just a bit.