On 26/03/2019 17:15, John Robertson wrote:
> On 2019/03/26 10:12 a.m., David Farber wrote:
>> Now that I have the schematic, it should be fairly simple (famous last
>> words, right?) to track down the fault.
>>
> Nothing better than fixing stuff IMHO.
>
> We generate enough garbage that keeping something going that is still
> useful is worth the effort, puls the brain cells need exercise!
Quite :)
The reason why I pipped in, was that I was researching a real time clock
/ NVRAM fix to a 27-year old Sun X terminal [1], and came across a
description of a 'kick start' procedure to initialise the installation a
new clock module (a 28pin DIL chip like the popular DALLAS type).
However, I just needed a new battery fitted to my old one, and set about
mine with a hacksaw like this ...
http://www.glitchwrks.com/2017/08/01/gw-48t02-1
[1] For the hell of it, and a break from coding with much faster RPi
things, I've been wandering down retro memory lane putting life back
into an old discarded Sun Sparc Classic X. (removing the X terminal
nature of the beast and installing a 1GB SCSI HDD, 72-pin parity SIMM,
NetBSD 8.0 etc).
It doesn't really have a purpose (unit lacks USB, CPU runs at 50MHz) but
the retro experience has reignited some brain cells - so it's kind of
therapeutic. In twenty-thirty years time, I'll probably have the same
fun with old Core2Duo driven things like what I am using here.
For a healthy mind, I heartily recommend this time travelling retro
hobby. Sure beats sudoku and eating lots of fish ...
--
Adrian C