… or another machine goes to Norway
Master-level! I’ve gotta work more and level up quickly 😀
I’ve decided that I’ll finally start working on Atari ST machines that I’ve ordered some time ago. Most of the machines had broken cases or were severely yellowed but that is a story for another blog post.
Today, I have a short story about preparing an Atari for Alexander from Norway. He made me start working on STs 😉
Since Alexander ordered quite a few machines in the past I decided that I’ll pick the best-looking ST and arm it with a few upgrades.
That was the only unit with a NOT cracked case
It was a bit dirty but cleaning was a simple task … if you know how to do it 😉
It had a few scratches on the top cover but that was smoothened with sandpaper later on.
Alexander asked me if I could install UK TOS in it. That was not a problem. However, I didn’t have a UK keyboard. All 23 STs that I had, came with German TOS and keys so I’ve ended up buying a whole unit only to get a UK keyboard 😀
To clean it properly, disassembly was needed.
… and here is the result.
I wasn’t pleased with slightly yellowed keycaps so I did another round of whitening and that sorted out the problem.
In the meantime, I’ve started working on a GOTEK drive. I’ve flashed an awesome FlashFloppy firmware to it.
There was a small problem though …
… unfortunately, a ribbon cable was a bit too short … grrrr…
I’ve decided that I’ll remove the original connector and solder in a standard pin header instead.
Shortly after that, I realized that the power supply cable was also too short … grrrr
I’ve ended up extending that one as well.
That finished Gotek mod. Below is a short video with Gotek running.
Video sync fix
In the STFM series, there is a slight problem with video sync on modern TVs.
Atari simply loses sync after a reset which results in unstable video output. There is a simple fix (Yay ! Internet FTW !). A resistor has to be soldered between chip pins near the modulator.
I’ve soldered it on the bottom side of a PCB.
The final job was to put UK TOS 1.04 inside.
That was achieved by flashing and fitting two flashroms – Winbond W27C010.
These flash chips are not exactly pin-compatible – each of ’em has four more pins.
That is not a problem but requires running a few external wires.
Below are a few pics of the finished work.
That’s it. Job is done and the new owner is very happy (AFAIK ;P)
ps. Atari also received a 4MB RAM upgrade but I forgot to take pics of that mod 😉
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