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  1. JDW

    BlueSCSI on Macintosh Portable

    If by "chunky" you means something like this... ...well, those will work too! They are normal silicon diodes like a 1N4004, but they are chunky boys because they handle 6 Amps! For long term use, their size may be a bother, but such diodes will work for testing purposes just fine, if you...
  2. JDW

    Classic Marathon on Steam

    And don't forget the precursor game to Marathon: Pathways into Darkness https://simplici7y.com/items/aleph-one-pathways-into-darkness/
  3. JDW

    Logic Board - Macintosh SE Reloaded

    I could have sworn I posted info about "Apple" logic board revisions and the associated ROM / IWM / SWIM chips somewhere in this forum, but none of my searches today found it. So I decided to post that info below in order to share it with @JdM74 and others. Apple Macintosh SE LOGIC BOARD...
  4. JDW

    BlueSCSI on Macintosh Portable

    Not sure what a "PSU grade" diode is, so if you know the part number (often printed on the diode body), that would help identify what you have. I believe that any diode other than a Zener and other than a 1N4148 (which don't come in 1A varieties) should suffice for a basic test. Silicon diodes...
  5. JDW

    BlueSCSI on Macintosh Portable

    I confirmed that the "always powered" solution proposed by @Androda works. No more freezes upon wake from sleep if WIFI was active when the machine went to Sleep, but I am not using it at the moment because it requires a male jumper pin to be inserted into one of the holes in the PDS connector...
  6. JDW

    [SOLVED] HyperDrive Mac512 is a Sad Mac 0F0100

    One last thing. When you are finished using your HyperDrive Mac, it's highly likely you will move the machine. Before moving it, PARK THE HEADS. Sounds odd in 2024, but remember this hard drive is from the mid-1980's when heads were left having precariously over the disk platters UNLESS you...
  7. JDW

    [SOLVED] HyperDrive Mac512 is a Sad Mac 0F0100

    After spending a whopping 8 hours in total on this mess, I finally found a solution. I finally found a FloppyEMU I use with my Apple IIc, flashed Mac firmware to it, then added many blank MFS 400K disk images for the purpose of making a backup. Using the HyperDrive Backup app, everything went...
  8. JDW

    [SOLVED] HyperDrive Mac512 is a Sad Mac 0F0100

    Folks, if any of you happen to be owners of a GCC HyperDrive, I would appreciate hearing your thoughts. Mine is a 10MB drive mechanism installed in a Macintosh 512K with 64K Rev.B ROMs, and has an internal 400K floppy drive. I made 3 videos about my setup in the past so by watching those you...
  9. JDW

    How to de-yellow the SPACEBAR

    Here's a photo of the metal hooks I mentioned in my opening post. The paint started to come off after having been dipped in the RetroBright liquid all day, showing the power of the deyellowing soup! Anyway, I simply taped those to the bottom of my Tupperware bin with masking tape, and then...
  10. JDW

    BlueSCSI on Macintosh Portable

    Indeed, I have no lead acid battery at all to use, which is why I purchased the Battery Eliminator from @Androda . But as I have said in other threads, the Battery Eliminator has one important consideration. It acts as a never draining battery that has no charger (ac adapter) attached. That...
  11. JDW

    Logic Board - Macintosh SE Reloaded

    Kai, is the MacEffects board a revision older than the matte black boards you kindly sent to me a long time ago? The reason I ask is because I never had a problem with RAM configurations on my matte black boards. As mentioned in the section of my video below, my matte black boards are...
  12. JDW

    tinkering with compacts all winter?

    Wow! Those boards look fabulous! Did you have PCBWay or JLCPCB (whoever made them) solder all those tiny components on the bottom side of the boards so you won't need to deal with that?
  13. JDW

    BlueSCSI v2: Sluggish Performance on SE/30

    I'm so sorry, Drake, I'm just too busy converting this thread into Braille right now. After that, sign language. Then, Swahili. We've gotta get the word out! ✌️ Oh yes, Klingon too is coming soon! https://www.translate.com/english-klingon
  14. JDW

    BlueSCSI on Macintosh Portable

    Not being a BSv2 designer, I am ill equipped to comment about why that happens, but perhaps @Androda can share some thoughts when he has some time. The only thing I can share is my experience with my 2023.03a "forked" BSv2 (with PICO W). The resistor mod seems to have worked for me. Even so, I...
  15. JDW

    BlueSCSI on Macintosh Portable

    "Fully functional" in terms of "data transfer" is key, and I know that is what you mean here. Even so, if you every decide to buy another "data" cable as a backup, it's a good idea. There are charging-only cables that screw up everything. I hate those and try to trash them when I find them...
  16. JDW

    non-aluminum axial caps polarity

    @reallyrandy I describe polarity of those in 35:31 in my video here:
  17. JDW

    BlueSCSI v2: Sluggish Performance on SE/30

    Had I silently followed the guide and mentioned nothing in a post, it would not have gotten me benchmark scores from other people, nor would my investigations have assisted others. Indeed, my previous post makes this thread all worthwhile. It is an investigatory thread. That information we...
  18. JDW

    BlueSCSI v2: Sluggish Performance on SE/30

    @eric , @This Does Not Compute , @speakers Thank you for your kind replies, and for the very helpful results. For the record, I am using the HD SC Setup (patched) 7.3.5 driver on all my virtual drives, which is the officially sanctioned driver in the vast majority of cases, as per this...
  19. JDW

    BlueSCSI v2: Sluggish Performance on SE/30

    After several hours of failed attempts, I finally have zero fragmentation. Even on my Intel Mac, it was tough, but in the end, I found there is NO WAY IN HELL that an Apple Silicon Mac will achieve this. So people who don't have an Intel Mac are out of luck. Here's my log file content now...
  20. JDW

    BlueSCSI v2: Sluggish Performance on SE/30

    Despite having disabled Spotlight in the Terminal, even after I freshly format the SD card as ExFAT, I still see it writes these hidden files: I don't know what's happening that causes my files to get fragmented. I write and write and write and write, check and check and check and check, and...