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Forum Index : Microcontroller and PC projects : Filename length on CMM2 SD filesystem....

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Grogster

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Joined: 31/12/2012
Location: New Zealand
Posts: 10109
Posted: 05:19am 11 Nov 2026
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Hi all.

What is the maximum filename length on the CMM2G2 with the latest FW from Peter?
How long can the filenames be on the SD card?
Smoke makes things work. When the smoke gets out, it stops!
 
panky

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Joined: 02/10/2012
Location: Australia
Posts: 1145
Posted: 06:02am 11 Nov 2026
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RC4 page 94, 127 for files and directories.

For FAT32 file names 255 so the CMM2 limit of 127 applies.
... almost all of the Maximites, the MicromMites, the MM Extremes, the ArmMites, the PicoMite and loving it!
 
Grogster

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Posted: 06:41am 11 Nov 2026
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Ta.  
Smoke makes things work. When the smoke gets out, it stops!
 
Mixtel90

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Joined: 05/10/2019
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Posted: 07:47am 11 Nov 2026
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For anything sensible, 8.3 in caps only. :)
Mick

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Grogster

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Joined: 31/12/2012
Location: New Zealand
Posts: 10109
Posted: 02:16am 12 Nov 2026
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It's my old Atari .ATR disk images.
The filenames contain all the games in the image, so the filenames can be pretty long!
MOST of them load fine on the CMM2 and the atari800.app, but some images don't.
I just get an error: "Cannot load disk image file."
There is no reason WHY, but I suspect it is filename length, pretty much all the other ones DO load and run just fine.  

Might just need to rename some files I think.  
Smoke makes things work. When the smoke gets out, it stops!
 
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