Installing Ultimate 1MB in Atari 800XL

In this video I'm installing Ultimate 1MB in Atari 800XL
Photo of the board with soldering points: photos.app.goo.gl/R28ZDWJPA2J...
Ultimate 1MB (with FJC firmware): lotharek.pl/productdetail.php...
Jonathan's (flshjazzcat) channel: / @flashjazzcat and his web page: atari8.co.uk
List of products made and sold by Jurgen van Radecke (including SysCheck): www.van-radecke.de/STUFF/tfhh...
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/ retrotechcorner
/ retrotechcorner

[@Mrshoujo]

Nice, clean, minimally invasive. Even I could do it!

[@angrydove4067]

Solid procedure, thanks. It felt weird to drill the holes. LOL

[@RetroTechCorner]

Yes, sometimes we need to fix what Atari engineers broke :)

[@nickolasgaspar9660]

My U1MB XE machine is gathering dust after testing the AVGcart and SUBcart with 512k and 1mb RAM expansion respectively . Their compatibility with ATR, XE, CAR and CAS files is amazing plus the SUBcart offers a stereo sound upgrade.

[@RetroTechCorner]

We (Atari fans) have been spoiled with the choice of excellent upgrade options. I still prefer U1MB with SIDE3 combo. It does absolutely everything I need - and it does it all perfectly. Jonathan's firmware for both devices is just amazing.