Bun's Lab – Telegram
Bun's Lab
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Electronics projects, vintæg computing, programming and repairs. A minimalist blog of sorts.
@BunsGarden @BunsNook
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The specs:
4.77 MHz 8088 CPU
Optional 8087 FPU
640kB of RAM
360k 5.25" floppy drive
20Mb Seagate MFM hard drive
Hercules graphics, 1 bit color depth
SoundGalaxy BX
Ethernet
2x Serial, 1x Parallel
128Mb CF card used by my hotrodded XT-IDE set-up
Ahh gee my network doesn't work.. time to troubleshoot.

Edit: of course it doesn't, this is the wrong net.bat file and the wrong packet driver too
Uhh yes.. I forgot all of those settings. Usually I write everything down and have a ton of backups. I just can't find it.
Bun's Lab
For those interested: here are the insides of my XT.
Thinking about it .. maybe this long cable is to blame for my file system corruption issues. I need to think about it, maybe scope it out.
Bun's Lab
I'll probably have to take off the uppermost SIMM socket. I can see corroded traces underneath. And although I have traced it all out and everything checks out, there could be still sufficient unneutralized base under there that provides enough of a current…
I did that and scratched off the oxidation layer. All traces have continuity and no cross conductivity. There are no traces that I didn't already know of from my earlier deduction. Wasted effort. In the parts bin it goes until I can either source a working replacement MX83C305FC or I can use it to fix something else.
The next repair project: these horrible Chinese desolder guns. The muzzle part breaks off. It's being held on by a tiny bit of plastic that just gives out after a bit of use. I fixed one of them with a pipe clamp and copious amounts of glue. Works great. Next problem however: The release mechanism for the solder collection vial breaks.

Seriously, these things are awful in every regard. And so is the base station as it runs a tiny cooling fan at like twice the voltage.
It's pretty obvious how the release mechanism works.
And where the weak points are.

Yes that hinges on a tiny bit of plastic.
Back in business. That is, once the glue has dried.

I really need to get something better, soon.
Wow, the difference an 8087 makes
Telegram on the XT, using an IRC bridge
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Let me sing you the song of my people:
Burning the midnight oil like it's 1986