Thanks Cory5412. I contacted rabbitholecomputing.com directly. Thanks for pointing me in the right direction.Hey @dvincent - welcome in! I've hidden a couple of posts that just contained a large image. I think if you upload multiple images to a single post they'll come through as a slightly easier managed gallery view. Although, this is really an announcement thread, not necessarily a support thread, so you may want to send support queries to the Rabbit Hole Computing email, listed on https://www.rabbitholecomputing.com/contact-us/
The Plus' SCSI implementation is a little wonky. Your issue is probably because the plus doesn't provide termination power. There is apparently a modification to add termunation power, but I've not needed to look into it. A search for old posts on the topic or on a search engine might dig something up.Did anyone get the Zuluscsi Mini to work on the Mac Plus? Mine can't find the disk. It works great with LC2, LC3, 475 and Iici, but not the plus
Well I know it does not provide power, so I have run the Zuluscsi with a usb power adapter, but that still didn’t help.The Plus' SCSI implementation is a little wonky. Your issue is probably because the plus doesn't provide termination power. There is apparently a modification to add termunation power, but I've not needed to look into it. A search for old posts on the topic or on a search engine might dig something up.
@Jockelill Please try the attached development firmware, and let us know if it results in any change of behavior for you with your Mac Plus.Well I know it does not provide power, so I have run the Zuluscsi with a usb power adapter, but that still didn’t help.
Anyway, I did find this:
so I will try and do this mod and see what happens.
Thanks!! First test didn't work , this is the log:The diode mod won't fix your issue, but it's always preferable, for the sake of convenience, if nothing else, to be able to power it from termination power.
It worked, kinda! Thanks for the help! It boots but then bombs finder with "address error". I just did a quick test this morning, but I will do another with some other systems tonight. This was with the above .dsk from Macintosh Garden.Yes, on the Mac Plus, you must have the following two settings present in a zuluscsi.ini file:
To quote Michael McMaster (Creator of SCSI2SD), "The Mac Plus is troublesome as it's bootrom code doesn't follow the SCSI standards. The SCSI standards recommend a SCSI selection abort timeout of 250ms, but the Mac Plus bootroms quit before even 1ms has expired."
If that doesn't change anything, please add Debug=1 to your log file, and re-attempt to boot. Then, upload your zululog file in a new GitHub Discussion, at https://github.com/ZuluSCSI/ZuluSCSI-firmware/discussions/new
I enabled debugging via SW2 on the the ZuluSCSI and have attached the log files for both v1.0.6 and 1.0.7 firmware versions from my Macintosh IIci. I hope this helps you find the source of the problem.Thanks. Since this is the first report we've had of any firmware issues with 1.0.7, unless we can get a debug log from you, it's going to be exceedingly difficult to understand the root cause of this problem. We don't have a IIci to test with.