If i cannot work it out on my own you are the man i will come to to convert the 2 on the right of this picture
EDIT. De-sock
Do they still have the TX-0 there ? did you get to see that ? Or the PDP-1?XMIT wrote: ↑Heh. If only the controller were written in Lisp too.
This is great, thank you so much for sharing.
Five years at MIT and I never once saw a Space Cadet keyboard. Though, I didn't work with Tom Knight. I did work a little bit with folks like Hal Abelson and have met Richard Stallman. I even took the then-mandatory freshman Scheme programming class, and saw an actual Lisp machine. But no keyboard. It was the stuff of legends, one of the fraternities had a song that featured it and its many modifiers.
I'm just waiting for the obligatory joke about how they converters themselves use a Read-Eval-Print Loop.
jbondeson wrote: ↑Love the boards, and I can't even begin to imagine the amazing stories they could tell if they could talk!
I'd say that's an accurate description of one of the 21 founders of Symbolics...webwit wrote: ↑The only way MMcM could have gotten these keyboards, is by being a true Lisp Beard. His must be long and gray.
The irony is that on the previous page of this thread MMcM showed us not only that he owns the most rare and shought after Symbolics Hall Effect keyboards but also managed to convert them and took the time to show us!Menuhin wrote: ↑With the thread title, I was expecting some photos like this also:
Not sure if we'll find out but MMcM obviously managed to convert his three Hall Effects. He mentioned that:XMIT wrote: ↑My real question for MMcM is whether the Symbolics boards use "hold low" or "pulse low" sensors. I shelved my conversion effort since a "pulse low" board would be unusable.
Do you have that GitHub link? I PM'd him about this let's see if he answers.MMcM wrote: ↑The firmware will all be back on GitHub as soon as possible. It had to be taken down for a bit for reasons that don't actually have anything to do with keyboards.
I would have a look here:seebart wrote: ↑Not sure if we'll find out but MMcM obviously managed to convert his three Hall Effects. He mentioned that:XMIT wrote: ↑My real question for MMcM is whether the Symbolics boards use "hold low" or "pulse low" sensors. I shelved my conversion effort since a "pulse low" board would be unusable.
Do you have that GitHub link? I PM'd him about this let's see if he answers.MMcM wrote: ↑The firmware will all be back on GitHub as soon as possible. It had to be taken down for a bit for reasons that don't actually have anything to do with keyboards.
Honest question: for typing (not gaming) ... why would it be unusable?XMIT wrote: ↑My real question for MMcM is whether the Symbolics boards use "hold low" or "pulse low" sensors. I shelved my conversion effort since a "pulse low" board would be unusable.
So, my typing style often involves having a few keys in flight, or, pressing a new key as I'm releasing another. For example, when typing the triplet "tre", I tend to not release the T until I've pressed the E. (Old Thinkpads had a fun bug under Windows where they would make an annoying beep if these keys were held down - the solution was to go into Device Manager and disable a "Beep" device...)Slom wrote: ↑Honest question: for typing (not gaming) ... why would it be unusable?
Of course it would not be unusable, it would be suboptimal. The question as so often is if it's better to have nothing than to have something less desirable to work with.Slom wrote: ↑Honest question: for typing (not gaming) ... why would it be unusable?XMIT wrote: ↑My real question for MMcM is whether the Symbolics boards use "hold low" or "pulse low" sensors. I shelved my conversion effort since a "pulse low" board would be unusable.
I think it would actually help solve the ghosting problem. And Shift/Ctrl would probably have hold low switches and a direct connection to the edge connector.