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Has anyone used AppleCAT for SE/30 diagnostics?
Posted by: smrieck511 on 2026-06-03 12:56:50
Just found this and curious if anyone has done any troubleshooting with it?

Posted by: Durosity on 2026-06-03 13:12:21
I’ve never heard of that! I’m gonna have to give it a look. That said, have you seen https://recon-68k.github.io/ which I suspect uses the same connectivity?
Posted by: smrieck511 on 2026-06-03 13:24:58
I’ve never heard of that! I’m gonna have to give it a look. That said, have you seen https://recon-68k.github.io/ which I suspect uses the same connectivity?
Yes! That looks amazing. Gonna check both of these out. My poor reloaded board needs all the help it can get.
Posted by: croissantking on 2026-06-03 15:03:43
Just found this and curious if anyone has done any troubleshooting with it?


Yes, I have. It’s not that useful - it claimed I had a failed ASC when I had a failed VIA.
Posted by: mattsoft on 2026-06-03 15:47:12
I’ve never heard of that! I’m gonna have to give it a look. That said, have you seen https://recon-68k.github.io/ which I suspect uses the same connectivity?

This software is AMAZING assuming your se/30 can get into debug mode. 2 cheap cables from Amazon and away you go!
Posted by: Burgertrench on 2026-06-03 18:07:44
This looks super handy, I wish there was a version that would work with other macs. I've been trying to fix an LCIII using the debug console over serial but would love something with a GUI and all the addresses and commands pre-programmed.
Posted by: smrieck511 on 2026-06-04 08:56:14
This looks super handy, I wish there was a version that would work with other macs. I've been trying to fix an LCIII using the debug console over serial but would love something with a GUI and all the addresses and commands pre-programmed.
Do you mean Recon or AppleCAT? I know there is AppleCAT for various Mac models just not sure how well it works.

Posted by: croissantking on 2026-06-04 08:57:54
I’ve never heard of that! I’m gonna have to give it a look. That said, have you seen https://recon-68k.github.io/ which I suspect uses the same connectivity?

Is this a front end/GUI based on the diagnostics mode that was previously known about and more recently popularized by Adrian Black?

Cause that would be pretty cool if so.

@Burgertrench the readme says that it supports the LCIII?
Posted by: finkmac on 2026-06-04 09:19:41
it's basically a techstep on the cheap. the techstep uses the diag mode to work.
Posted by: Durosity on 2026-06-04 09:38:15
Is this a front end/GUI based on the diagnostics mode that was previously known about and more recently popularized by Adrian Black?
Yep and it works pretty well. I hope support for other devices is added soon.
Posted by: Burgertrench on 2026-06-04 22:11:53
Do you mean Recon or AppleCAT? I know there is AppleCAT for various Mac models just not sure how well it works.

I'm talking AppleCAT. I hadn't heard of Recon, it looks perfect!
Posted by: Burgertrench on 2026-06-04 22:14:04
Is this a front end/GUI based on the diagnostics mode that was previously known about and more recently popularized by Adrian Black?

Cause that would be pretty cool if so.

@Burgertrench the readme says that it supports the LCIII?
This is amazing, I am absolutely going to give this a shot.
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