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  1. JDW

    Software-only OVERCLOCK for LC475, LC575, Quadra 605

    Welcome to the club! 😅 Whether it be in this hobby or at my day job, I find that once I ask more than one very specific and pointed question, the other person often gets overwhelmed. Then I need to play the follow-up game, which is a rather precarious game because if you follow-up too much...
  2. JDW

    WarpSE: 25 MHz 68HC000-based accelerator for Mac SE

    OK. I bought a brand new SD card (16GB Gigastone), formatted it ExFAT and created the 200MB image (formatted with the HD SC Setup 7.3.5 driver, which I know is SE compatible). I did a clean install of System 7.1 followed by the System Update 3.0 install. I copied over various files including...
  3. JDW

    WarpSE: 25 MHz 68HC000-based accelerator for Mac SE

    I don't have the opportunity to do that right now, but I can try it, of course. Thank you for the suggestion and details. But of course, this raises the question of why that SD card works fine when I test in my stock SE Motherboard. Again, this issue seems to be affecting my SE Reloaded board...
  4. JDW

    WarpSE: 25 MHz 68HC000-based accelerator for Mac SE

    Lunch Break Test of WarpSE Firmware 0.7e continues. If you re-read my post from yesterday where I did the 6 Tests, you will see that in Text #6 I held down SHIFT while booting. That allowed SCSI Director Pro 4.0 to complete all its tests without error. Today, I reduced the number of startup...
  5. JDW

    WarpSE: 25 MHz 68HC000-based accelerator for Mac SE

    Does that mean you clicked this button? In my previous post where I show my 6 tests in SCSI Director Pro 4.0, it was that "Test" button which takes you to the actual suite of tests. It does the SEEK tests at the beginning. After that, I get the out of memory error in some situations (again...
  6. JDW

    WarpSE: 25 MHz 68HC000-based accelerator for Mac SE

    @Zane Kaminski I am still testing WarpSE Firmware 0.7e. TEST #1 Using WarpSE in my stock Apple SE motherboard with IWM, I booted into System 7.1 using MacSD and tested with SCSI Director Pro 4.0. No problem! TEST #2 Powered off, removed MacSD, attached my BlueSCSI v2 to the same ribbon...
  7. JDW

    Apple IIc 342-0033-B "MON" ROM same as 342-0033-A

    My Apple IIc has a 342-0033-B "MON" ROM (aka "ROM 0"). I asked several people how it differs from the 342-0033-A, but nobody knew. I was advised to READ out the content with my T48 universal programmer, so I did. I then downloaded the 342-0033-A ROM from an online archive and compared both in...
  8. JDW

    WarpSE: 25 MHz 68HC000-based accelerator for Mac SE

    System 7.1
  9. JDW

    Brainstorm Clone?

    Interesting how this older thread popped into my view today. I missed it back when it was originally posted, so thank you, @trag ! I had a Brainstorm accelerator in my compact Mac back in the day. I ended up selling the machine to a co-worker when I was in college, I believe around 1990. I...
  10. JDW

    WarpSE: 25 MHz 68HC000-based accelerator for Mac SE

    WarpSE Firmware 0.7e TESTING CONTINUES... I confirmed the SCSI Director Pro 4.0 problem affects BlueSCSI v1 & v2 only, and not a spinning platter drive: After that video, I put WarpSE on my stock Apple motherboard with IWM chip and it had the same problem with my BlueSCSI v1. So no one can...
  11. JDW

    WarpSE: 25 MHz 68HC000-based accelerator for Mac SE

    @Zane Kaminski Lunch Break Test Completed, with GOOD & BAD news. (All testing was done with my SE Reloaded motherboard fitted inside the SE's metal chassis. SWIM chip installed.) GOOD NEWS Prince of Persia audio sounds great and the Demo was able to run all the way through with no freezing...
  12. JDW

    WarpSE: 25 MHz 68HC000-based accelerator for Mac SE

    @Zane Kaminski I will try to make time to test firmware 0.7e and the Prince of Persia Demo on my lunch break today. LocalTalk should be still working fine, I assume? My last tests of LocalTalk involved opening Photoshop 4 on my networked SE/30, with the app being stored on the WarpSE...
  13. JDW

    MANUAL for MacEffects RAM Card for Mac Portable M5120 & M5126

    MacEffects once sold an 8MB RAM Card for the Macintosh Portable. TechKnight did the original design and licensed it to MacEffects for mass distribution. That card went out of stock around 2021, and due to chip sourcing issues, it probably won't be in stock in the future. Some people who...
  14. JDW

    Reproduction RAM cards for Mac Portable

    I have that card but didn't purchase it from MacEffects because it came inside a 5126 Portable I purchased. @techknight is the engineering wizard who created the original design and licensed it to MacEffects...
  15. JDW

    BlueSCSI and System Switcher basic question

    It's a great suggestion that works well! 👏 There's also another technique put forth by Thomas Lee, EE Professor at Stanford and author of the Classic Mac Repair Notes. Many years ago he shared his technique: Power on, crank up the brightness all the way, then yank out the power cord. Yep...
  16. JDW

    BlueSCSI and System Switcher basic question

    @SasquatcherGeneral I think @Paolo B makes an excellent point about the CRT neck, so you definitely want to give due consideration to that. I've made several videos about CRT discharge, and the one below (which leads you to the correct time stamp) shows the latest info, including the exact...
  17. JDW

    IIc Clear Case from MacEffects [VIDEO Overview]

    @MacEffects always comes out with some of the most incredible case recreation and this new one is no exception. This was originally a Kick Starter, and now that Mark has stock, the IIc clear cases being sent out supporters. I received one last night and made a video sharing my thoughts...
  18. JDW

    Formatting 800K MFS Disks with 64K ROMs

    In 2007, 68kMLA member "Mac128" and myself (JDW) discussed the creation of 800K "MFS" disks and floppy drives that would work with the Macintosh 128K and 512K, regardless of ROM version. Extensive testing was done to confirm what would and would not work. A month later, Mac128 compiled the...
  19. JDW

    Original Micron XCEED 30HR GrayScale Kit for sale soon

    Two thousand smackers US! Wow. I say that because I have that very card and the original grayscale kit and wire harness, including the external monitor connector. I wasn't aware prices have risen to that level now. Probably would be hard to reverse engineer a video card that complex, but...
  20. JDW

    BlueSCSI and System Switcher basic question

    Seems you used System Picker and now you can only boot into Dark Castle and quitting restarts the Mac. Meaning, you seem unable to get to the Desktop in order to use System Picker and fix the problem. My advise is to not use BlueSCSI as a substitute for a FloppyEMU. I use my FloppyEMU for...