If you place one of those tan ZIF connector bases over the TOP of one of the ROMs, will the contacts mate up with the top of the of the legs on the surface mounted ROMs of the PEx DIMM?
Back in the day, we sometimes used to "clip" a wire wrap socket to the Target ROM with a ribbon cable PCB Mount inserted into it leading to another Cable connector inserted into the ROM Reader.
If you can file the edges of the ZIF socket down to the level where its contacts are in solid contact with the top of the surface mounted Target ROM's legs while it's clamped to one of them in an inverted position, you should be able to power up and select just that one ROM to get a good read of its contents. It worked great for 32 & 64 bit soldered thru-hole EPROM arrays back in the Neolithic Age! [
] ]'>
You may need to etch an adapter to solder down the ZIF plate if it doesn't have enough physical integrity on its own to just solder patch wires to its contacts. That might actually work at both ends, have you got a pic or spec of ROM ROM Reader's connector interface & cables/adapters? [}
] ]'>
A picture is worth a milllion words to a visual thinker. :approve:
edit: if you've got a couple of ZIF Sockets to spare, I could rip the sides off one, put them on edge so they'll definitely make contact, etch an adapter PCB so it'll make good contact to one of the 8100 ROM DIMMs I bought as blanks for the project. I can splay the contacts out to match any ribbon cable you spec and provide interleaved ground lines to prevent crosstalk on the cables.
Is epoxy conductive? I could use that to shore up the outside edges of the adapter halves. :approve:
edit: while beginning to doze off, I came up with a KISS based approach, I'll just lay out a single PCB that splays out the pad pattern to the cable thru-holes and leave long handles protruding from the top with hole patterns for a hinge . . .
. . . mount a pair together with the hinges attached to a, properly sized, drilled & tapped block of 1/2" plexi . . .
. . . add rubber bands and, voila, a custom SMT IC Chip Clip is born! :approve:
Back in the day, we sometimes used to "clip" a wire wrap socket to the Target ROM with a ribbon cable PCB Mount inserted into it leading to another Cable connector inserted into the ROM Reader.
If you can file the edges of the ZIF socket down to the level where its contacts are in solid contact with the top of the surface mounted Target ROM's legs while it's clamped to one of them in an inverted position, you should be able to power up and select just that one ROM to get a good read of its contents. It worked great for 32 & 64 bit soldered thru-hole EPROM arrays back in the Neolithic Age! [
] ]'>You may need to etch an adapter to solder down the ZIF plate if it doesn't have enough physical integrity on its own to just solder patch wires to its contacts. That might actually work at both ends, have you got a pic or spec of ROM ROM Reader's connector interface & cables/adapters? [}
] ]'>A picture is worth a milllion words to a visual thinker. :approve:
edit: if you've got a couple of ZIF Sockets to spare, I could rip the sides off one, put them on edge so they'll definitely make contact, etch an adapter PCB so it'll make good contact to one of the 8100 ROM DIMMs I bought as blanks for the project. I can splay the contacts out to match any ribbon cable you spec and provide interleaved ground lines to prevent crosstalk on the cables.
Is epoxy conductive? I could use that to shore up the outside edges of the adapter halves. :approve:
edit: while beginning to doze off, I came up with a KISS based approach, I'll just lay out a single PCB that splays out the pad pattern to the cable thru-holes and leave long handles protruding from the top with hole patterns for a hinge . . .
. . . mount a pair together with the hinges attached to a, properly sized, drilled & tapped block of 1/2" plexi . . .
. . . add rubber bands and, voila, a custom SMT IC Chip Clip is born! :approve: