TTL computing

From: John Honniball <coredump_at_gifford.co.uk>
Date: Sun Apr 14 17:42:57 2002

Tony Duell wrote:
> > > I've had semicondcutor RAM fail, albeit not DRAM in a PC. 2114s are
> > > particularly bad for this.
...
> Hmm.. I've had so many 2114s fail, in equipment from different
> manufacturers (examples : a Commodore 8050 disk drive, a TRS80 Model 3
> (video RAM) and an HP82163 video interface) that I really suspect the
> chips...

I had a 2114 go bad in my UK101. I swapped it into the video RAM,
which made the stuck "1" bit visible as a dud character in the
middle of the screen. Scrolling made it "smear" all the way up
to the top.

More recently, I've managed to obtain a supply of 2114s to
(hopefully) keep the UK101 going.

--
John Honniball
coredump_at_gifford.co.uk
Received on Sun Apr 14 2002 - 17:42:57 BST

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