Jump to content

Crutch

6502
  • Content Count

    351
  • Joined

  • Last visited

Everything posted by Crutch

  1. Crutch

    Macintosh 512K and cables

    Not normal .. first guess is there used to be an accelerator in there, or maybe a hard drive, and that cable powered it. Someone removed the accelerator and taped up the end of the cable?
  2. Crutch

    Mac SE and a Novy 68030

    In the particular case of the Mobius drivers, there is an extension called Mobius Sound which should help with the sound issue specifically once you’re ready to try it out.
  3. Yes, but I thought you might be interested in the earlier version also. I certainly was. I had the same thought about System 7.0!
  4. I thought MacTools included a floppy diagnostic that works on 400k disks though, too? I’m certain I used it on my unenhanced 512k circa 1985 ....
  5. Crutch

    Mac SE and a Novy 68030

    Congrats on picking up this accelerator, these are really cool. I have the Novy Quick30 for one of my Mac Pluses. The large square socket there is for an FPU, 68881 or 68882. They’re readily available on eBay and elsewhere for maybe $20. If you get one, be sure to plug it in with the right orientation, with the gold diagonal aligned with the “notch” in the center of the socket (I know that’s obvious but I’ve made the mistake myself). I don’t know what U30 is for, my Mac Plus version doesn’t have that socket. Once you have your SCSI2SD you’ll want to run this with the right drivers. I use the Mobius drivers for mine and they work great. Your machine may not see the performance benefit without the driver for reasons that aren’t clear to me (I would love to understand this actually...). https://macintoshgarden.org/apps/accelerator-card-drivers I don’t have an SE but believe they’re limited to 4 MB RAM, right? If so the CPU will only see 4 MB on the board without the drivers running. If you install the proper drivers you can then run Connectix’ Compact Virtual and access the rest (I think up to 16MB) as virtual memory. (On my Plus, I could only access 8 MB total this way, so this is hearsay.) Do you get the crackling sound all the time, or only when you try to play a sound? If the latter, that’s unfortunately a normal consequence of running a fast accelerator in these old machines. Running with the proper drivers will help, but probably not fix it entirely.
  6. It’s here. http://macintoshgarden.org/author/andy-hertzfeld
  7. Crutch

    SCSI2SD as an External HDD for Multiple Macs?

    Yes! Just ensure there are no scsi ID conflicts and proper termination as usual.
  8. Thank you again for putting me in the right direction. I have now fixed the issue. Here’s what I did to consistently boot my 030 accelerated Mac Plus from SCSI2SD: * Used the SCSI2SD Util on a modern Mac to configure the SCSI2SD as described at this link, which includes turning off “Enable Unit Attention” which I believe prevents the problem noted in your last post. http://www.codesrc.com/mediawiki/index.php/Mac_Plus * My SCSI2SD is partitioned into three volumes (1 GB, 500 MB, and another 500 MB). I reformatted each with Lido. * I then used SilverLining as @lisa2 helpfully suggested to install drivers (SilverLining lets you install its drivers without reformatting). When installing SilverLining drivers, I made sure “Blind” handshakes were not selected. THIS ONLY WORKED WITH SILVERLINING 5.4. This was the crucial realization here and figuring it out took me many days of trying various things. Using a new SilverLining 5.6.3 gave weird errors like “Driver size is zero bytes” or similar, and left me in a state where trying to start up with my SCSI2SD attached gave me a sad Mac or - scarier - a black screen on startup with weird flickering and clicking sounds. * This got me to a state where one of my SCSI2SD volumes would boot the Mac Plus cleanly - nice!! But ... it was the wrong one (SCSI ID 2), and the Startup Disk cdev isn’t supported on the Plus. So, I used System Picker to choose a different boot drive (SCSI ID 0). BAD IDEA ... this told the SCSI ID 2 drive that it didn’t have a blessed System Folder, so at boot time the Plus needed to move onto a different drive. But at boot time my Mac Plus kept re-trying ID 2, the highest ID with a drive attached, probably for this reason: https://macgui.com/usenet/?group=14&id=44109 (thanks @Dog Cow for posting this excellent info). Result: an endless loop of smiling Macs turning back into flashing question marks! (One can get out of the endless loop by inserting a good boot floppy.) I solved the problem by just moving the System Folder I wanted to boot from to my SCSI ID 2 volume. I’m leaving this here in case helpful to the next person having similar issues. The biggest sticking point was (1) not knowing to enable Blind handshakes, and then (2) knowing that, not realizing I needed to use the older SilverLining 5.4. Thanks again for the valuable help.
  9. Having a problem booting my Pluses from a SCSI2SD that’s driving me nuts. I am assuming I’m looking at bad Boot Blocks or similar, but I can’t for the life of me figure it out. I have a SCSI2SD 5.1 that is (I think!) properly set up, partitioned into three drives (500MB + 500MB + 1GB). The SCSI2SD is terminated, formatted and 2 of the 3 volumes have blessed System Folders. Here are my symptoms: - If I start with an additional (external, spinning disk) SCSI HD in the chain, set to boot from that drive using System Picker, everything works fine — it boots from the second HD and the SCSI2SD volumes appear on the desktop and work great - If I remove the second HD (leaving the SCSI2SD connected), and turn on my Plus, it POSTs and runs memory check then shows me a black screen that never goes away. It gets stuck like this forever. - If I leave the SCSI2SD connected but EJECT the SD card before startup (again without the external HD), the Plus starts normally and I can boot from floppy. If I re-insert the SD card before “Welcome to Macintosh”, the Plus will hang at “Welcome to Macintosh” (I think when the SCSI Manager initializes?). If I wait until the Finder loads then re-insert the SD card, I can run Lido from floppy, it sees my 3 volumes on the SCSI2SD just fine, and can “Mount” them, switch-launch to the Finder on my SCSI2SD, and run everything normally until the next restart .. at which point I’ll get stuck at a black screen again unless I eject the SD card. Since this started happening, I have tried re-initializing my SCSI2SD volumes with both Lido and Special/Erase Disk..., then copied all my files back over. Nothing seems to help though. (By the way and very strangely, formatting the drive from Lido didn’t actually erase any files even though Lido said the format completed successfully!! Special/Erase Disk did, however.) This problem happens with BOTH of my Pluses so it’s definitely something with how the drive is configured (by the way, both of these Pluses have 030 accelerators ... I wonder if any chance related? Maybe I’ll try removing one...). Any ideas much appreciated!
  10. Crutch

    Rear I/O panel for "Mystic" CC?

    By the way, on the off chance anyone wants an original CC IO panel dremeled reasonably neatly to fit a 575 board, I’m happy to send my extra.
  11. Crutch

    Rear I/O panel for "Mystic" CC?

    A guy in Australia sells them on eBay. I have one. They are gorgeous. Pricey though, as I recall $20 + shipping from Australia. https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F222665321688
  12. Right. FWIW I haven’t seen one of these Daystar boards in person but I do have a couple Diimo030s, and those run at 50MHz by overclocking an 030 marked as 40MHz just like yours. (And they run flawlessly.)
  13. Wow, nice score. One of those socketed Daystar boards sold on eBay for $1200 recently. I suspect that will actually run at 50MHz by the way. Couldn’t read what’s on your clock can in the picture, though. Anyway that SE30 will feel blazing fast.
  14. Thanks Rick, that is spot-on because I know for a fact that the external 80 was formatted (by its prior owner) with Silverlining. I had no idea about this “blind” transfers issue so will try formatting my SD card with Silverlining and see if that works!
  15. Crutch

    Macintosh Performa 200

    The motherboard is probably close to the same, but I am pretty sure the Classic II had different ROMs than the Classic. I’ve never had a Classic though so I’m not certain.
  16. Crutch

    Macintosh Performa 200

    The Performa 200 is the same as the Classic II so you could definitely try a Classic II motherboard or ROMs, they would be identical. It seems pretty surprising to me though that one could fry the ROMs by putting them in the wrong way, since all they’d be getting is 5V in the wrong spot? (I’ve never done that but I’ve definitely put a 68882 in the wrong way and although it got really hot, it worked fine once I realized and corrected my mistake!)
  17. Crutch

    SE/30 can't recognize SCSI HDD

    That is awesome! Well done. It is really satisfying (and always a little surprising!) to get that first successful boot.
  18. Crutch

    Color Classic VGA Mod. the CORRECT way

    Forgive a naive question, I have never tried modding a CC but am thinking about it - why is this method preferable to cutting the analog board trace, which seems much easier? Is it because we don’t like dremeling the analog board, or does the older method have problems? I’m referring to this of course, “option 1”: https://powercc.org/640x480/
  19. On @Trash80toHP_Mini‘s point about exposing the SD card thru a security slot, I just wanted to point out you don’t need any case mods to do this. Long ribbon adapters are available for the purpose, for example this “LANMU Micro SD TO SD Card” https://www.amazon.com/dp/B01D9JIUU0?ref=ppx_pop_mob_ap_share I have one in my SE/30. Just snake the male end thru the security slot from the outside and plug into an internally mounted SCSI2SD, then leave the female end stuck to the outside of the case (I used a Velcro dot). I can pull out the SD card any time without opening the Mac. It’s great.
  20. Crutch

    68K (no Mac) Designs OK?

    What do you want the code to do? If you just want it to access memory and do calculations and leave a result in memory somewhere, any ordinary Mac 68k code complier should work fine for that purpose - either retro68k or even THINK C on a legacy platform. With THINK C you could even embed asm{...} blocks and leave your result in a register. Just compile your code into a Mac application and use ResEdit to extract the hex dump of CODE resource 0. That’s your compiled 68k code that should run on any 68k platform. You could compile a function this way also, since the argument passing mechanics should be the same. Obviously if you call any Mac traps they won’t work, and you want to make any system calls onto your target platform you’d have to do from an asm block and wouldn’t be able to test on the Mac emulator. (Basically this is probably only a helpful answer if you’re trying to do something quite simple, which I’m guessing you’re not...)
  21. Crutch

    I need some help repairing my SE/30 Board

    Sounds like (1) you have bad ROM or it can’t see the ROM (try swapping the ROM as a couple of us have suggested), or (2) another component has failed. One thing to try is see if your symptoms are described in The Dead Mac Scrolls - the PDF is available online if you google it.
  22. Crutch

    I need some help repairing my SE/30 Board

    Oh sorry, what does it do now exactly then when you flip the switch?
  23. Crutch

    I need some help repairing my SE/30 Board

    Did MacCaps actually recap the board for you? If so great, but you may still have leaked electrolyte on the board. I don’t think 5% white vinegar would do much (smells nice though in my opinion, and kills germs!), I would bathe it in 90% isopropyl alcohol and scrub it down with a toothbrush. Let it dry for a day, try again. Try swapping out both the RAM and ROM SIMMs if possible (RAM SIMMs are available cheap on eBay and elsewhere ... ROM might take a bit more patience to find one.). If none of that works your leaked caps probably damaged a trace or via and you might have to identify and repair it, or one of the ICs on the board might be bad, which I lack the skills to diagnose but someone else here can probably help with!
  24. Crutch

    Extended Keyboard II troubleshooting

    EDIT: I meant “Pina”!
  25. Crutch

    Extended Keyboard II troubleshooting

    Did you try a little WD40 into the troublesome switches? Pena recommends that as I recall, anyway it’s worked for me.
×