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  1. V

    Centris 610 @ 40Mhz possible?

    My initial inspiration was Phipli's short video, which looks legit.
  2. V

    Centris 610 @ 40Mhz possible?

    Yet another thing to test. I'm currently using 2x32mb EDO RAM sticks. Perhaps I need to re-test with them removed and only onboard RAM available. I've also maxed out the VRAM. I've also done the Ethernet clock decoupling, but my tests have shown that Ethernet availability is not tested during...
  3. V

    Centris 610 @ 40Mhz possible?

    This is the next thing I'm going to attempt. As stated on http://www.applefool.com/clockchipping/610.html, there is resistor R137 apparently responsible for the gestalt ID (52 vs 53), perhaps having the board identify itself as a Quadra might unlock some timings somewhere. ;)
  4. V

    Centris 610 @ 40Mhz possible?

    Thanks for confirming my fears, but I have seen several posts and YouTube videos of people achieving 40Mhz. How is that possible?
  5. V

    Centris 610 @ 40Mhz possible?

    Hi all, In my quest to squeeze the most from my Centris 610, I'm trying to get it to run the upgraded 68040RC40 02E31F at its full 40Mhz speeds. I've upgraded the clock driver from XC88916DW55 to MC8891DW80, but I haven't been able to make the computer chime with a 20Mhz SG-615 clock so far...
  6. V

    Recapped battery bombed SE/30, 3 years later can't boot from HD or floppy.

    Yeah, I got all the schematics and pinged the ribbon connectors to chips, as well as the D0-D7 and A0-A2 lines between the SCSI and SWIM, they checked out, also both have power and ground. Gonna refresh the solder joints on them and the ASC and report back for more hive-mind insights :)
  7. V

    Recapped battery bombed SE/30, 3 years later can't boot from HD or floppy.

    To be honest, I'm more concerned about the floppy/SCSI side of things. Any similar diagrams for that part of this story? The floppy drive is a known good one, that worked before, now when I insert a floppy, I don't hear the head assembly seeking, just a 2-sec delay and eject with an X icon. The...
  8. V

    Recapped battery bombed SE/30, 3 years later can't boot from HD or floppy.

    I took some time and checked some traces and cleaned the sound area a bit more with a Q-tip and iso, after reassembly the sound is now gone completely. The Vdd and gnd pins of the UE10 are slightly more corroded than the rest. I also made some new 7.1, 7.5.5 boot floppies on my PowerBook G3 but...
  9. V

    Recapped battery bombed SE/30, 3 years later can't boot from HD or floppy.

    Hello, everyone! I recapped a battery-bombed SE/30 about 4 years ago, replacing all the electrolytic caps with tantalum ones, and got it fully working. Recently I decided to check the Mac and sadly it wasn't booting from the internal scsi drive AND the floppy. Both the hard drive and floppy...
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