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About aperezbios

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  1. Nice. Thanks for this. In doing some further reading, I came across the following additional Apple developer resources, which delves further in to the subject of on-disk HFS structures: Inside Macintosh: Files / Chapter 2 - File Manager / Data Organization on Volumes Some of the same text is available in PDF form at Pages 55-~70 of this Apple PDF (which is also attached to this post) InsideMac-ChapterTwo_File_Manager.pdf
  2. Yes, if you feed 12 volts DC to pin 25 of a SCSI2SD V5.5, you will release the magic smoke. There's probably a place you can pick off 5 volts DC from the Dove board itself.
  3. Description AAUI AUI control in circuit A 5 2 data out circuit A 9 3 data in circuit shield shell 4 data in circuit A 2 5 voltage common 4 6 control out circuit shield shell 8 control in circuit B 6 9 data out circuit B 10 10
  4. Out of curiosity, how mature/fully fully functional is it, compared to the non-baremetal version? Is there usable documentation in English? I haven't used it.
  5. Steven, RaSCSI is great if you know what you're doing, or are comfortable experimenting, but it isn't instant-on (you have to wait for the Pi to boot, if you don't leave it powered on), and it's not a product you can buy "ready to go". I wouldn't characterize it as "for a beginner", but it really depends on your level of comfort. There are a _LOT_ more moving parts than with something like SCSI2SD, which is "instant on" even moreso than a traditional HDD (no mechanics to spin up).
  6. Tom, It's also worth pointing out that you can just slap an ISO on an SD card using DD, BalenaEtcher, or whatever, and install from it, to a separate volume on the same SCSI2SD. The SCSI2SD can be both your CD-ROM and HDD. See attached screenshots on how to configure.
  7. Understood. We've all been there. It's a really easy thing to overlook, especially when you're toggling things on and off on multiple devices, particularly if late at night and/or sleep deprivation is a factor
  8. You can't do this. Double termination on a SCSI bus will cause havoc. ONLY the _end_ of a SCSI chain must be terminated. Nothing else. It might work some of the time, flakily, but it's just not allowed by the SCSI specification.
  9. Out of curiosity, roughly how long did it take to install 7.5.3 this way?
  10. Nope, you do it from scsi2sd-util, with your SCSI2SD connected to a modern PC, via USB. You can download the latest version of SCSI2SD-util here http://scsi2sd.com/v5/files/v4.8.4/
  11. ...but on the same SCSI2SD project landing page, if you bother to scroll down, you'll see links to the code repos for both V5 and V6, which, by your own admission, contain clear licensing terms. Also, a simple web search for "SCSI2SD GPL" shows evident source code. While I don't disagree with you that the codesrc website could certainly be more clear, I also don't find the argument that the licensing of the source is at all "opaque". The links to the SCSI2SD git repositories have been on that page since at least 2014 in the case of V5. Here's a a snapshot of the site from April 4th, of 2018, f
  12. Very informative presentation. It's unfortunate that you state that SCSI2SD is "not open source, but used to be" which is an inaccurate representation of the actual situation, where SCSI2SD V4/V5 _and_ V6 firmware is fully open source, and GPL licensed, as is the GUI code to configure the utility. It has _always_ been this way. The only thing that's not open source with SCSI2SD V5 and V6 is the actual PCB layout. The SCSI2SD V4 gerbers are still open source, and always have been. You are correct in one regard, however, which is that the SCSI2SD V6 PCB has never been open source. SC
  13. I'm looking for a list of capacitors/sizes/values for the Delta SMP-220DB PSU,as used in the PowerMac 8100/80 and Quadra 800/840AV. If anyone has created one, if you'd be so kind as to share it, that would be greatly appreciated. My 26-year-old PowerMac 8100/80 thanks you in advance
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