Recent content by David Cook

  1. David Cook

    Assembly Patching 68K software - SimpleText

    Someone asked to have SimpleText open a smaller text window at startup. Initially, I assumed this would be a fairly easy fix by just overwriting a few constant values in SimpleText code. It turned out to be a pain -- but I learned a lot along the way. You need to have the code editor (from one...
  2. David Cook

    SE/30 -> Default state of NEC VRAM

    If it were my board, I would remove both of those. Then, clean the area well to spot any broken traces. Then replace them with new parts. If you are going to go to the trouble of removing the old ones, you might as well replace them with fresh parts.
  3. David Cook

    SE/30 -> Default state of NEC VRAM

    Yes! Absolutely. What worries me about your photo is that I'm not seeing any on-screen images from ROM. No cursor, disk, or desktop pattern. So, although I believe the video output circuit needs work, I suspect there is another problem as well. That should not dissuade you -- as your board...
  4. David Cook

    SE/30 -> Default state of NEC VRAM

    Hello! Is that a 'before' picture? The capacitors don't look replaced. For example, C3, C4, C5, and C6 look original. If you haven't already, replace all the capacitors, then clean all corroded areas with isopropyl alcohol and a toothbrush. (And then an ultrasonic cleaner if you have one.)...
  5. David Cook

    Faster Baud and More Serial Ports (CSI Hurdler, SerialDMA, QuadraLink)

    That surprises me, because BinHex's text encoding inflates a file by 1/3. Ahh, MacBinary does not have compression, but BinHex has run-length encoding. So, depending on the file, BinHex could larger or smaller than MacBinary.
  6. David Cook

    Faster Baud and More Serial Ports (CSI Hurdler, SerialDMA, QuadraLink)

    Almost. You just need to put a null modem adapter between the two cables. Because you are a 128K fan:
  7. David Cook

    PicoMicroMac v2

    Because there is not a serial port on our tiny little friend, I thought I would try a hack. From Adafruit, I ordered three parts ($20 total) that emulate a keyboard from text typed on another computer: CH9328 keyboard emulator: https://www.adafruit.com/product/5973 Logic-level USB-to-serial...
  8. David Cook

    Faster Baud and More Serial Ports (CSI Hurdler, SerialDMA, QuadraLink)

    I agree. For bulk transfers, your approach and ZuluSCSI sneakernet are faster and more convenient. I just saw the enormous write-up you did for networking old Macs. Bravo!
  9. David Cook

    Faster Baud and More Serial Ports (CSI Hurdler, SerialDMA, QuadraLink)

    Yes, you can do that. But, better still, run Tiny Transfer on the vintage Mac and run Tiny Transfer in Basilisk II on the modern Mac.
  10. David Cook

    Faster Baud and More Serial Ports (CSI Hurdler, SerialDMA, QuadraLink)

    I agree. Despite the increase in size, BinHex 4 has stood the test of time! I was not aware of this. I'll download it and take a look. - David
  11. David Cook

    Restoring a Retrospect DAT/DDS backup: Attempting to crack my own password

    It's funny how the mind works. I think I was just too lazy to test my password cracking code, and my brain said "That's too much work -- here's the password."
  12. David Cook

    Restoring a Retrospect DAT/DDS backup: Attempting to crack my own password

    Back in 1992, I borrowed a DDS tape drive from my day job to back up all of my Macintosh hard drives at home. I stored the tape in a safe deposit box, until years later when it was relegated to the bottom of a storage box in the basement. Upon reviving my interest in Macs about five years ago, I...
  13. David Cook

    Apple Developer Price Lists Oct 1991, Feb 1992, April 1992

    Attached are PDF copies of the Apple suggested retail and developer discount prices for Apple II, Macintosh, AUX, Monitor, and Printer products circa 1991-1992. I was a developer at the time and I just recovered these documents from a tape backup. Example: M5510LL/B Macintosh IIfx 4MB 1FD CPU...
  14. David Cook

    Color LCD Retrofit Kit for SE/30 by ZigZagJoe

    What about ADB instead? Solder to the internal pads. Include a temperature monitor, fan controller, and brightness control. Edit: Additionally, this would work on any ADB Mac. And, other kits can be added to the ADB chain.