Uploaded December 2021 | Updated September 2026, 2 weeks ago
The ACSI2STM project by Jean-Matthieu Coulon is interesting. Using only inexpensive modules and a hacked DB25 plug you can add a "hard drive" to your ST.
twitter.com/thetechnoshed
ACSI2STM: github.com/retro16/acsi2stm
Disc image with ICD driver: atari-forum.com/viewtopic.php?t=34967
8 MHZ SPI firmware change: atari-forum.com/viewtopic.php?p=424898#p424898
00:00 Intro
03:00 Modifying the DB25 (attempt 1)
09:00 Soldering
14:41 Pivot to protoboard & better DB25 explanation
21:50 Programming
25:57 Installation & testing
31:26 Power supply considerations
The ACSI2STM project by Jean-Matthieu Coulon is interesting. Using only inexpensive modules and a hacked DB25 plug you can add a "hard drive" to your ST.
twitter.com/thetechnoshed
ACSI2STM: github.com/retro16/acsi2stm
Disc image with ICD driver: atari-forum.com/viewtopic.php?t=34967
8 MHZ SPI firmware change: atari-forum.com/viewtopic.php?p=424898#p424898
00:00 Intro
03:00 Modifying the DB25 (attempt 1)
09:00 Soldering
14:41 Pivot to protoboard & better DB25 explanation
21:50 Programming
25:57 Installation & testing
31:26 Power supply considerations









![[B-Roll] External PSU: cable resistance tests
The first cable I built in my External PSU video wouldnt power my ST.
Did I get my calculations wrong? Is it a bad cable? Was someting else the problem? Was it all three?
@thetechnoshed
https://twitter.com/thetechnoshed
https://github.com/dh219 [B-Roll] External PSU: cable resistance tests](https://i.ytimg.com/vi/fdCPEAc5cwk/mqdefault.jpg)
