Trash80toHP_Mini
NIGHT STALKER
Roots or this craziness to be found in the MagicalBus™ thread for the budding LCIII in SE project. PDS dungeon breakout required fot that one, but it's only a one way street. Inspiration for that was Radius' fabulous Magic Bus implemented as an adapter card for what was built into their SE Accelerators.
LCIII in Classic poses a brand new problem so I've moved on from PCI Connector to the much tighter pitch, 240 pin DDR2 Memory Module as the LCIII Memory/PDS Subsystem interface which will be running 120 connections up one side of a tall format take on the DDR2 DIMM and back down the other 120 teeth on the edgecard connector..
Was figuring that a notch on one side and a bit of an arc on the other and angled insertion and removal would work:
But KISS principle violation forced me to break out of the Symmetry/Parallelism box constraint. Once outside the box, it pretty much fell into place.
Once upon a time, by doing the same thing I came up with the suggestion for fitting something similar on a 10cm Square PCB.
Note the band of Surface Mount Memory on the board as above, the Unit will look much like this 72pin SIMM expander:
Surface mount pad real state available for banks of memory on both sides of the riser available under SIMM, VRAM and ROM connectors, per
@max1zzz suggestion.
At any rate, @k24a1 suggested a Compact III project, and here a bit of it lands with a thump.
LCIII in Classic poses a brand new problem so I've moved on from PCI Connector to the much tighter pitch, 240 pin DDR2 Memory Module as the LCIII Memory/PDS Subsystem interface which will be running 120 connections up one side of a tall format take on the DDR2 DIMM and back down the other 120 teeth on the edgecard connector..
Was figuring that a notch on one side and a bit of an arc on the other and angled insertion and removal would work:
But KISS principle violation forced me to break out of the Symmetry/Parallelism box constraint. Once outside the box, it pretty much fell into place.
Once upon a time, by doing the same thing I came up with the suggestion for fitting something similar on a 10cm Square PCB.
Note the band of Surface Mount Memory on the board as above, the Unit will look much like this 72pin SIMM expander:
Surface mount pad real state available for banks of memory on both sides of the riser available under SIMM, VRAM and ROM connectors, per
@max1zzz suggestion.
At any rate, @k24a1 suggested a Compact III project, and here a bit of it lands with a thump.
Idea: Macintosh Classic III (LC550+M1420)
I have a Macintosh Performa 550 motherboard sitting around, probably hasn't been turned on since 2004 according to the person who gave it to me. I also have a Macintosh Classic (M1420 RevB) which is probably one of my least favorite compact macs because of how it was released at the wrong...
68kmla.org