> I suppose it's the computer as well but I was surprised by how relatively
> slow they are, considering that they're 'solid state'.
It's largely the fact that bubble memory is inherently serial. You have to
cycle through all the bits in a line until you get to the right location.
--
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Second that. I've got a PC-5000 as well (wanna buy it?) and have never had
any issues with the bubble paks.
I suppose it's the computer as well but I was surprised by how relatively
slow they are, considering that they're 'solid state'.
An interesting project, replacing them with SD cards or simi
> How "stable" is bubble memory, over decades?
>
> There is a Sharp PC-5000 that may be available, I believe from 1983-1985
> era, which is said to have bubble memory. But the owner can't find a power
> cable, to verify if anything still works.
>
> I have older systems with ICs that are still wo
Check out this link for a detailed description of the "Stirling Cycle" in
particular the YouTube video at the bottom of the article is very well done
and shows a small machine in operation:
https://www.stirlingcryogenics.eu/en/the-stirling-cycle
Tom
On Sun, Oct 2, 2022 at 1:41 AM Paul Koning wr
For anyone that might be interested, I was able to get some 74L85s. After
installing them
(and chasing down a misbehaving 7400) I was rewarded with a fully functional
SSM SB-1.
Bill
-Original Message-
From: Chuck Guzis via cctalk [mailto:cctalk@classiccmp.org]
Sent: Thursday, September
Hi Steve,
the Sharp PC-5000 bubble memory is very reliable. It`s working flawless
on two machines I have.
Bubble memory was used as well in some significant older machines, like
the Texas instruments Silent Terminals (around 77 I guess). And last
time I turned on the terminal, it worked perf
How "stable" is bubble memory, over decades?
There is a Sharp PC-5000 that may be available, I believe from 1983-1985
era, which is said to have bubble memory. But the owner can't find a power
cable, to verify if anything still works.
I have older systems with ICs that are still working OK, but
