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flemingt

Restoring a PAL 600xl - advice needed

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There is a bit of torque on it all right, it could do with a hook around the board on the left hand side near the cart slot. But it works fine, nothing a bit of cardboard over the top won't fix.

IMG_20200822_144917.jpg

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Ok, many steps forward and one step back. The good:

Picture over svideo looks great.

U1MB is running

 

The bad:

That damned keyboard, still not working. Back out with the multimeter.

IMG_20200822_150742.jpg

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8 minutes ago, mdivancic said:

Nice design. Are you not worried about flex because one side is not supported? Please post the STL here for others. Also if you want I can add it to my Thingiverse post so these are all in one place. Now we need designs for the XE’s.

No problem, I'll post them once I'm back in front of a more modern computer.

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So I've performed a continuity check across all pin combinations with the kB in socket. These pairs have low resistance
2,16 = 1
2,17 = Esc
4,10 = y
6,11 = h
16,17 = unknown

 

I've checked the socket with the kB removed and they're open.

 

I think it might be time to pull the keyboard apart...again!

 

 

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Figured it out! Now it's working! I realised that most of the stuck keys were near screw holes. They were over torqued. So I put everything together slowly and rechecked for shorts at various intervals. 

Thanks everyone for the help!

 

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thanks!

 

Now to figure that part out.

I've a CF card and reader ready to go.

I'll format as FAT32 and stick on the firmware files.

I understand I can flash it using the side2 cart.

 

For anyone who's interested, here are the files for my upside-down U1MB 600xl bracket.

I printed it in under an hour. 50% infill and with no supports.

Orientation images are earlier in this thread.

Hopefully someone else finds it useful.

 

U1MB holder Flemingt.FCStd U1MB holder Flemingt.stl

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Ok, I'm baffled. I've put the firmware atr and Tim files on the CF card. I can get into side2 and launch the flashing program, see the U1MB but no firmware files are listed.

 

Alternatively selecting the atr from side2 and complains about not loading it.

 

Any tips?

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Now when I select firmware.atr it loads missile command?!

 

Definitely something odd happening.

It entered the self test menu on reset.

 

I tried something else, mounting the atr in side2. Loading it. It complains about no DOS. Then pressing help & reset to get back into the U1MB menu. Then Q. At which point the flash tool detects the firmware files and it flashed correctly...

 

I now have the new U1MB menu

Edited by flemingt
Update and success

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Now it's USB powered! As well as a reproduction joystick to top things off.

IMG_20200918_164039__01.jpg

IMG_20200918_163411__01.jpg

IMG_20200918_164512__01.jpg

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I built up an SIO2USB cable today. It seems to be working fine with executables and floppy images but I haven't had much success with cassette images. I plan on tweaking the Case design once I get some RAL appropriate coloured filament

IMG_20200926_161945__01.jpg

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