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Trash80toHP_Mini

Cable Driver/Line Driver/Buffer IC Suggestions please. ;-)

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TIA gang. First, I'd like advice on whether I need one or not for this little project. And what might be recommended.

 

I decided it would be fun to hot glue a 2x9 strip of headers in between a pair of NuBus Slots. That way I could play switcharoo with the constant value high and low signals by making connections over a pair of eight inch M-F or F-F strippable rainbow jumper wires/IDC cables I conveniently have on hand.

 

Figured this NuBus Slot ID signal playground might be a bit much without a cable driver IC to keep things on the level. I've got a half inch of clearance so DIP fits the first pass at feasibility checking for a .48" wide PCB. Perf board will probably work fine, but it's not very pretty in Illustrator. SMT isn't out of the question either, a single chip project sounds good!

 

OK, here's the visual aid that deciphering my .TXT usually requires: ::)

 

post-902-0-48945100-1482114563_thumb.jpg

 

p.s. is epoxy or hot glue a better choice in terms of insulation when I stabilize mangled legs on wire wrap EuroDin connectors?

 

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I'm wondering if I'm overthinking this or falling back on my standby ID10T state?

 

Here's the simplest diagram of the simplest form of what I'm trying to do.

 

post-902-0-97025700-1482192407_thumb.jpg

 

The low state appears to be a simple connection to groundIf so, no problem, but I'd really appreciate some help on the advisability of running four High State signals from a single High State signal tap.

 

 

To chip or not to chip, that is the question  .  .  .  along with what KIND of chip might suit this application best?

 

 

 

 

Addendum: might I be better off just using ground for low and a pullup resistor for high without ever even tapping the IIsi's signals at all?

 

 

 

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Yes. You don't really need a buffer for this because the signals will be a static state, if you will. I would suggest using ground for low and a pull-up for high.

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THX, figured that one out  .  .  .  finally! ::)

 

I'm pulling high and low off two pins located very conveniently that plug directly into the IIsi's NuBus Slot and hooking them up to the rails on a jumper block PCB. That way I can play games with the Slot IDs of the adapter in my IIcx.

 

See this post in TWO SLOT IIsi Nubus Card hack . . . Take 2

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