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| Sad Mac when connecting external SCSI2SD to SE |
Posted by: elemenoh on 2020-09-26 11:02:40
Getting chime then Sad Mac 0000000F / 00000002 whenever connecting an external SCSI2SD to a Mac SE.
I've tried the following:
- Changed out the ROMs to newer FDHD versions
- Connected to external CD-ROM which worked okay
- Made sure internal HDD was set to ID0 (since the volumes of the SCSI2SD are on 1,4,5,6.
- Disconnected the internal HDD
- Checked voltage rails OK
This SCSI2SD works fine on many other Macs.
Any ideas for what to check next? I'm kind of at a loss since SCSI seems to be working fine with the CD drive.
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Posted by: aperezbios on 2020-09-27 00:25:28
It could be the 53C80 SCSI controller itself. Is it known to actually work? It's soldered down (not socketed) on the SE, I believe, but you might want to consider trying to replace it, if you don't know that it's functional.
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Posted by: elemenoh on 2020-09-27 01:32:53
It could be the 53C80 SCSI controller itself. Is it known to actually work? It works fine with an external CD-ROM, but maybe it has some other fault.
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Posted by: Trash80toHP_Mini on 2020-09-27 01:37:07
Is the external version Termination Powered? Have you tried an external power source?
edit: which version of SCSI2SD are you using? Can the USB port be used to supply power?
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Posted by: elemenoh on 2020-09-27 10:07:26
Is the external version Termination Powered? Have you tried an external power source? It's termination powered. I haven't tried external power yet, but haven't needed to on any other Mac. I'll give that a try though.
which version of SCSI2SD are you using? Can the USB port be used to supply power? I'm using the external 5.5. Yes, it has a port I can connect to try it out.
https://store.inertialcomputing.com/product-p/scsi2sd-v5.5-usps-int-1st.htm
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Posted by: Trash80toHP_Mini on 2020-09-27 10:13:34
Good! My WAG was that your SE has weak termination power for whatever reason. Has it been recapped? Have you got a meter you can use to determine the power output level if the USB power test proves successful?
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Posted by: elemenoh on 2020-10-01 04:04:40
So I tried with an external USB power source and it made no difference. I also tried with a couple other SE MLBs and hit the same issue. So it sounds like it might be some kind of config issue with the SCSI2SD. I might try disabling all but one ID and see what happens. Any other suggestions?
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Posted by: dochilli on 2020-10-01 17:56:44
Perhaps you can use this tutorial:
http://www.savagetaylor.com/2018/01/05/setting-up-your-vintage-classic-68k-macintosh-using-a-scsi2sd-adapter/
Point 3 shows some configurations for the SCSI2SD. There are also some images with 6.0.8. and 7.5.5.
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Posted by: cy384 on 2020-10-01 23:54:03
weirdly, scsi2sd can cause a sad mac if there's garbage data on the SD card, so try zeroing it out.
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